THE AEM UPDATE Department of Aerospace1998-99 THE AEM UPDATE Engineering and Mechanics

Chairman’s Corner many glitches. Every six years our program is evaluated by ABET (the Accreditation Board for Engineering and Overall this has been a Technology). Our next accreditation is coming up in good, but busy year for 2001. The new accreditation procedure, ABET 2000, is the Department. The De- much more outcomes based than in the past. We will partment and ­­Aerospace be surveying constituents - current and former stu- Engineering in general had dents, employers, advisory board members, and other a large presence at the IT Universities regarding our program and its outcomes. If Graduation Ceremonies you are a recent graduate of the Department, you will on June 4. In addition to be receiving a survey soon. Please fill it out and return graduating 27 students with the BAEM Degree, the it. I will share the results of this survey and how we will Commencement Speaker was Col. Robert Cabana, As- use these results to improve our program in the next tronaut and Chief of the Astronaut Office. Col. Cabana is AEM Update. a native of Minneapolis. Professor Gordon Beavers was We have had some changes in the Department since named IT Distinguished Professor. The IT Professorships the last newsletter. Professor Tayfun Tezduyar, Distin- recognize distinguished faculty members within the guished McKnight Professor and Director of the Army Institute of Technology who are judged exceptional through unusual efforts in, and contributions to teach- ing, a reputation in scholarly research, and a genuine commitment to the Institute of Technology and its Inside activities. It would be difficult to find another faculty Chairman’s Corner...... 1 member in IT who satisfies these criteria as well as Gor- Academics: Where are We Now?...... 3 don Beavers. In addition two of our graduating seniors Control Science and Dynamical Systems (CSDy)...... 5 were honored at Commencement, Dorothea Czernik News About Our Faculty...... 5 received the Paul A. Cartwright IT Alumni Award for Honors, Awards, and Presentations...... 7 Outstanding Service and Joe Mueller gave the student Parachute Systems Technology Short Course...... 8 commencement address (the text of Joe’s speech is Per Capita Expenditures from External Sources ...... 8 given later in this news letter). Both Dorothea and Joe New Instrumentation Lab Course ...... 9 will remain in the Department for graduate studies. Looking Back...... 10 Exchange Visitor Program...... 11 External support for research and other activities per fac- Department Notes...... 12 ulty member continued to rise for the seventh straight Alumni Highlights...... 13 year. This year we were highest of any Department in AIAA Hosted Region V Stdent Conference ...... 14 IT with $277,754 per faculty (the average for the en- Solar Vehicle Project ...... 16 gineering departments was $171,873). In 1991-92 we Kids Program ‘99 ...... 16 were lowest of all of the engineering departments with NASA Astronaut IT Commencement Speaker ...... 17 external expenditures of only $63,029 per faculty mem- 1999 IT Commencement Speech...... 18 Minnesota Space Grant Consortium ...... 20 ber. This annualized increase of 48.7% is phenomenal Degrees Awarded-1998-99...... 21 and indicates the quality and dedication of our faculty. Senior Capstone Design Class Our undergraduate enrollments have increased slightly Oasis Mission: Spacecraft Team...... 22 and the job market still appears to be good for our Thunder Mission: Aircraft Design Team...... 24 graduates. We are continuing our recruitment efforts Special Department Speaker ...... 27 Recipients of Undergraduate Student Awards ...... 27 for both graduate and undergraduate students. This Donations: You Can Make a Difference: ...... 28 summer will mark the end of the quarter system at the Recent Research Projects of AEM Professors ...... 28 University of Minnesota. After a considerable amount 1998-99 Faculty & Staff ...... 31 of work, we have our new curriculum in place and are confident that we will make the transition without too Department of Aerospace Engineering & Mechanics1998-99 1 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

High Performance Computing Research Center, left the retire, we will undoubtedly see some changes in the taking more classes which are assigned fewer credits University of Minnesota to assume the James F. Barbour focus of the Department. There will be opportunities to Academics: than under the quarter system, however, the amount Professorship in Engineering and Chairmanship of the maintain and enhance the quality of our Department of time a student spends per credit earned remains here are e ow Mechanical Engineering and Materials Science Depart- and expand into new areas. We are currently working W W N ? about the same (see related article on following pages). ment at Rice University in Houston. We will be searching on a plan for future hiring. Your suggestions on the for a faculty member in computational fluid mechanics future of the Department are welcome. The best way AEM Undergraduate Program AEM Graduate Program this year. Dr. Ivan Marusic, previously of the University of to contact me is via e-mail, [email protected]. During the 1998-99 school year, 27 students received Melbourne in Australia, joined our faculty in October of Last year, the Department enrolled 20 new students into One project that is consuming a great deal of time and the BAEM degree through the undergraduate program 1998 as a tenure-track Assistant Professor. Dr. Marusic is a the Aerospace Engineering and Mechanics graduate resources is a major rehabilitation of our lab facilities. in Aerospace Eng­ineer­ing and Mechanics. In the fall fluid mechanist who specializes in turbulence modeling. program. Six of these students were from the United We are the only engineering department that has not of 1998, 19 new juniors were admitted to the upper Dr. Mehran Mesbahi will join the Department this fall as States, four of whom were graduates of our own BAEM had a new building or a major renovation of an existing division program. a tenure track Assistant Professor. Dr. Mesbahi comes program. Two were from China, two from Spain and building, so we are having to do the best with what we to us from the Jet Propulsion Lab where he has been The job market continues to be very strong and our two from Venezuela. The others were one each from have. With the construction of the new Mechanical En- working on formation flying of satellites. He received graduates have had good success in locating jobs, locally Germany, Greece, India, Ireland, Malaysia, Russia, Sri gineering Building, the electrical service to our building his BS in Engineering from California State University and across the nation. There were also graduates who Lanka and Turkey. will be increased substantially. We currently have some in Northridge, an MS in Electrical Engineering and in will continue their studies at top graduate schools in experimental facilities such as wind tunnels and the arc During the past year the Department awarded 9 Mas- Math from USC, and a Ph.D. in Electrical Engineering also the country, including 4 who remained in Minnesota furnace which cannot be operated simultaneously due ters (six in Aerospace Engineering and 3 in Mechanics) from USC. Dr. Mesbahi will enhance Aerospace Systems to enroll in the graduate programs in Aerospace Engi- to lack of power. We are now looking toward some major and 5 Ph.D. degrees (one in Aerospace Engineering in the Department. This is an area where student de- neering and Mechanics. renovations in the basement of Akerman including a and 4 in Mechanics). Our graduates continue to secure mand is high and our faculty is small. Graham Candler new computer lab and wind tunnel facility. Early registration this spring brought about a new era lucrative and satisfying employment, some in industry was promoted to Full Professor. Professor Candler is a for students at the University of Minnesota. They were and others teaching in higher education institutions. leader in computational hypersonics and is one of the State support for these infrastructure improvements is registering to take classes in fall of 1999, the beginning Several of our M.S. graduates last year continued on in youngest Full Professors at the University. still not adequate and we depend on gifts as an import- of the new semester system. AEM students had to first the PhD. program here in Minnesota and one went on ant method for supplementing state funds. The support Next year will see some administrative changes. Profes- meet with their assigned advisors to plan a program of for a PhD. elsewhere. of our alumni and friends is critical to us in maintaining sor Ted Wilson has decided to step down as Associate study covering at least their first year under semesters. excellence in our programs. The past year also saw a number of our graduate stu- Department Head and Professor Perry Leo will become Some students planned out a four-year program. Stu- dents participating in service activities with elementary our new Associate Head. Professor Ellen Longmire will As I have stated before, one of our goals is to keep in dents were able to register on-line with the (also new), schools along with conducting tours of our facilities resume her job as Director of Graduate Studies after better contact with our graduates. Please keep in touch university-wide computer system using the PeopleSoft and other activities with elementary school children returning from sabbatical leave and Professor Tom by providing us with items for our Alumni news. You software. Under the semester system, students will be during their visits to the Department. ­­­­Shield will be our Director of Undergraduate Studies. can do that by contacting Donna Rosenthal by e-mail. As many of you know the age distribution of our faculty Her address is [email protected]. Alternatively, Donna’s fax number is (612) 626-1558. Also visit the members is bimodal and all of the above individuals BAEM Converts to Semesters are from the younger mode. As older faculty members Departmental web site at http//www.aem.umn.edu.

The University was mandated by the State to change tures and Aerospace Systems, which are brought togeth- over to the semester system starting with the Fall term er in the laboratory and design sequences. The Fluids se- of 1999. Thus the BAEM degree had to be converted to quence, which includes propulsion, repackages the five Visit the AEM semesters. This process took a couple of years and this quarter courses into three semester courses. The ther- year we will start to find out how well the new program modynamics and heat transfer courses given by the ME homepage at: works. The new program is shown in the accompanying department have been combined into a single course. http: //www.aem.umn.edu/ table and it is different from the quarter BAEM program The Structures courses are essentially unchanged, the in several respects. The first two years are fairly stan- required solids technical elective is still a choice of For Info on: dard for a four year engineering program. The biology several courses. Our Composites course, which is now course with a lab is a University wide requirement and • Faculty a required course for Material Science majors, will most we have changed to requiring C/C++ as a programming likely remain the most popular selection. The Aerospace • Faculty Research language instead of FORTRAN. Systems topics have been combined into three courses • AEM Programs The junior and senior years had to be significantly re- starting in the second semester of the sophomore year. worked to convert to the semester system. However, Additional emphasis has been placed on Space by there are still the three main topic areas of Fluids, Struc- converting the Astrodynamics elective course into the

Department of Aerospace Engineering & Mechanics 2 University of Minnesota Department of Aerospace Engineering & Mechanics 3 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99 required Spaceflight Dynamics course. The laboratory semester of the design sequence. The AEM courses Control Science and Dynamical Systems (CSDy) courses have been completely redesigned (see the already involved significant writing, thus making them article on the Instrumentation Laboratory Course writing intensive did not require major changes, but Interdepartmental Ph.D. Program elsewhere in this issue). The required senior design an additional credit was added to the laboratory and sequence, which was two quarters, is now a full year. design courses to indicate the increased workload. The CSDy Indepartmental Ph.D. Program provides an Technology Center lectured on the ongoing work at This should give the students much needed additional Finally, there are two technical electives (in addition opportunity for interdisciplinary research in control sci- Honeywell related to “Designing an Airborne Alerting time to complete their projects , RC models and other to the solids elective) that the students may choose ence and dynamical system theory. The CSDy program System for Closely Spaced Parallel Approaches.” hands-on aspects of their designs in the spring. from the advanced courses given by the AEM and other coordinates scholarly and scientific activity of these Three students, Dr. Ali Jhemi, Dr. John Pliam and Dr. engineering departments. areas within IT and the University and coordinates its There is no longer a separate technical writing course. Wayne Lu graduated with the Ph.D. degree in CSDy The University wide requirements have changed and, activities with industrial firms in the Minnesota region. Additional information on the BAEM program under during the 1998-1999 academic year. Dr. Jhemi’s thesis now require that advanced writing be integrated into semesters, including a listing of all AEM courses, is CSDy faculty are drawn from the Departments of was entitled “Optimal Flight of a Helicopter in Engine technical courses. Four ­­writing intensive courses are available over the Internet at: Aerospace Engineering and Mechanics, Chemical Failure.” Dr. Jhemi’s advisor was Professor Yiyuan Zhao required, which will be met by the two freshman physics Engineering, Electrical Engineering and Mechanical (AEM). He is currently employed at the Aerospace Cor- courses, our senior laboratory course and the second http://www.aem.umn.edu/teaching/semesters/ Engineering, as well as from the Departments of poration in Los Angeles as a member of their technical Computer Science, Mathematics and Statistics, all in staff. Dr. Pliam’s thesis was entitled “The Algebraic AEM Semester Curriculum, Semester by Semester IT, and from the Departments of Economics and Polit- Properties of Cryptographic Protocols in their Formal ical Science. The Co-Directors of the CSDy Center are Analysis.” His advisor was Professor E.B. Lee (EE). Dr. Lu’s Professor Gary J. Balas (AEM) and Professor Tryphon thesis was entitled “Norms and Optimal Control with Georgiou (EE). Professor Balas serves as CSDy Director Worst Case Disturbance Rejection.” He was co-advised of Graduate Studies.­ by Professor Gary Balas (AEM) and Professor E.B. Lee (EE). The CSDy Program has 7 students pursuing the This has been an exciting year for the CSDy Program. Ph.D and all are Research Assistants working on various The CSDy seminar series focussed on Air Traffic Man- research projects related to the control and dynamics agement. In the Fall, Professor James K. Kuchar of the of systems. Massachusetts Institute of Technology lectured on “Managing Uncertainty in Aerospace Decision Aiding For more information regarding the Control Science and Alerting Systems.” Professor Claire Tomlin from and Dynamical Systems Program contact Kristal Belisle gave a seminar in Winter on “Hybrid at (612) 625-3364 (email:[email protected]). Dynamical Systems with Application to Air Traffic Man- agement” and Dr. Christine Haissig of the Honeywell

News About Our Faculty

Professor Gary Balas gave invited Diego, CA, in June. ference, Norfolk, VA, June 1999; talks at NASA Lewis Research Cen- 33rd AIAA Thermophysics Confer- During the past year, Professor ter, Boeing in Houston, TX, NASA ence, Norfolk, VA, June 1999; 30th Graham Candler and his post-docs Johnson Space Center, University AIAA Fluid Dynamics Conference, and graduate students presented of Budapest, Hungary, and the Norfolk, VA, June 1999; and the 3rd papers at: the 51st APS Division University of Stuttgart, Germany. He ASME/JSME Joint Fluids Engineer- of Fluid Dynamics Meeting, Phila- taught a three-day short course at ing Conference, San Francisco, CA, delphia, PA, November 1998; 37th 3M this past spring on, “Frequency July 1999. He was also promoted AIAA Aerospace Sciences Meeting, Domain Process Analysis and Con- to full professor in the Department. Reno, NV, January 1999;­­ 2nd AFOSR trol, for engineers and researchers. International Conference on DNS Professor Roger Fosdick was elected In addition, he co-organized and and LES, New Brunswick, NJ, June Chairman of the Society for Natural taught a short course on, “LFT-Based 1999; 35th AIAA/ASME/SAE/ASEE Philosophy in March, 1999 for the Methods for Integrated Modeling Joint Propulsion Conference, Los second time in the history of the of Nonlinear Systems,” at the 1999 Angeles, CA, June 1999; 30th AIAA society, which began in 1962. He American Control Conference in San Plasmadynamics and Lasers Con-

Department of Aerospace Engineering & Mechanics 4 University of Minnesota Department of Aerospace Engineering & Mechanics 5 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

gave invited lectures at the lst Ca- was launched by Clifford Truesdell of Bonn in Germany, December at the end of this year as Associate experimental and theoretical study nadian Conference on Nonlinear in 1952. 1998; Max-Planck-Institute for Head of the Department. of turbulent boundary layers and Solid Mechanics, Victoria, British Mathematics in the Sciences, high Reynolds number turbulence. Professor James and Manfred Wut- Professor Yiyuan Zhao gave invited Columbia, Canada, June 1999 and October 1998; and the FMS Fall This work involves laboratory mea- tig (University of Maryland) received lectures at the University of Wash- at the symposium on Finite Thermo­ Meeting at the Symposium in surements as well as measurements the best paper award for their paper ington and NASA Ames Research elasticity: ASME Winter Annual Honor of J.W. Cahn on his 70th in atmospheric boundary layers “Magnetostriction of Martensite” at Center 1999. Meeting, Nashville, TN, November Birthday, October 1998. on the Great Salt Lake Desert flats the ASME/SPIE Smart Structures and 1999. In addition, he was honored of Utah. Professor Marusic is also Materials conference, March, 1999. Professor Ellen Longmire held the New AEM Faculty Member for his past research contributions collaborating on new visualization In 1999, James gave invited lectures TEPCO Chair at Keio University, Yo- Professor Ivan Marusic is a new at the 1999 ASME Mechanics and and data mining tools applied to at Brown University (PDE Seminar), kohama, Japan during October and Assistant Professor in the Depart- Materials Conference in Blacksburg, multi-gigabyte turbulence data The National High Magnetic Field November 1998. During her stay ment of Aerospace Engineering and VA, June 1999 with a symposium in sets generated from simulation and Laboratory and State Uni- in Japan, she gave invited lectures Mechanics this year. He received his his behalf titled “Advances in the experiment. versity, Harvard University (Applied at Tokyo Electric Power Company, Ph.D. in Mechanical Engineering Continuum Mechanics and Ther- Mechanics and Condensed Matter Keio University, Tokyo University, from the University of Melbourne, modynamics of Material Behavior”. Professor Ivan Marusic Physics Seminar), Oxford University Science University of Tokyo, Osaka Australia, 1992. He was very instru- There were 37 talks presented by (Mathematics Colloquium). He also University, Kyoto Institute of Tech- mental in revitalizing aspects of our friends and colleagues over a 3-day tunnel facility. Professor Marusic’s gave a “Riverside Chat” (Mississippi nology, and the Japanese Agency of senior lab course and is presently period capped by an enjoyable main research interest is on the River) to McKnight University Pro- Industry, Science, and Technology. setting up a new research wind celebration dinner. fessors on Smart Materials. With S. For the rest of the academic year, Professor William Garrard served Müller (MPI Leipzig), G. Friesecke she worked at the University of Honors, Awards, and Presentations as a Technical Co-chair for the (Oxford) and E. Salje (Cambridge), California/Berkeley on microscale AIAA/CEAS 15th Aerodynamic De- James organized a conference at fluid flows. She also gave invited Professor Beavers was appointed as an Institute of Ceremony on June 4th. celerator Seminar and Technology Castle Ringberg (Tegernsee, Bavar- lectures at Stanford University and Technology Distinguished Professor. This Professor- Professor Daniel Joseph was selected to receive the Conference in Toulouse France in ia) on the Passage from Atomic to the ASME/JSME Fluids Engineering ship recognizes distinguished faculty members in the 1999 Professional Achievement­ Citation from the June 1999 and presented a paper at Continuum Scales; incidentally, he Conference in San Francisco. Institute who are recognized as exceptional through the conference. He also organized also enjoyed the mountain climb- Alumni Associate Board of Governors at the University In 1999, Professor Thomas Lundgren outstanding efforts in, and contributions to teaching, a the 8th Decelerator Systems Short ing there. James participated in a of Chicago. gave two invited lectures while reputation in the scholarly field, and a genuine commit- Course which was held in Minne- DARPA conference on Biologically visiting the Issac Newton Institute, ment to the Institute of Technology and its activities. It Professor Joseph also received the 1999 Fluid Dynamics apolis in October 1998. There were Inspired Flight, and enjoyed the Cambridge, U.K., during the winter, carries a one-time unrestricted fund of $15,000 for use Prize from the Am­­erican Physical Society. This Award 46 practicing engineers including ASME Applied Mechanics confer- and one at the Department of Aero- in the professional development of the faculty mem- recognizes and encourages outstanding achievement an astronaut participating in the ence in Blacksburg, in honor nautics, at the California Institute ber’s research. He was honored at the IT Graduation in fluid dynamic research. Professor Joseph is being five-day course. of Roger Fosdick. of Technology in April. During the acknowledged for his contributions to the stability and Professor Richard James ­was named Professor Daniel Joseph gave summer, he was a visiting Professor bifurcation of fluid flows, rheological fluid mechanics, (together with John Ball from Ox- the 1999 L.S.G. Kovasznay Distin- at Stanford. and fluid mechanics of problems involving solid-liquid ford University) Chief Editor of the guished Lecture on “Lubricated boundaries. He will be presented with the Award at the Professor Ivan Marusic gave an Archive for Rational Mechanics and Transport of Viscous Materials,” at fall 1999 meeting of APA. invited lecture at IIT, Chicago, IL, Analysis. The Archive is a premier the University of Houston, April March 1999. He also gave a talk at Professor Yiyuan Zhao received the Boeing–A.D. Welli- journal in the field of mechanics 1999. the APS meeting in Philadelphia, ver Faculty Summer Fellowship as one of 10 that were and analysis, that counted as early Professor Yohannes Ketema re- November 1998 and attended the selected for the 1999 program. He is participating in members of the editorial board, ceived the 1999 IT Student Board AIAA meeting in Norfolk, VA, June the 1999 summer program that runs from June to among others, Chandrasekhar, Best Instructor Award. 1999 where he coauthored two August at the Boeing Commercial Airplane Group. The Einstein, Green, Hadamard, Hamel, papers that were presented by his objective of the Boeing–A. D. Welliver Faculty Summer E. Hopf, Kac, Leray, Rellich, Rivlin, Professor Perry Leo gave invited colleagues. Fellowship Program is to influence the content of en- Schlichting, Signorini, Sternberg, lectures at the Department of gineering education in ways that will better prepare and von Neumann. The predeces- Engineering Mechanics at the Uni- Professor Thomas Shield was ap- tomorrow’s graduates for the practice of engineering in sor for the Archive, the Journal for versity of Darmstadt in Germany, pointed the new Director of Under- a world-class industrial environment. It exposes a small Rational Mechanics and Analysis January 1999; the Department graduate Studies. Pictured above from left to right: Professor Beavers number of competitively selected Faculty Fellows to presented with his award by Mrs. George Taylor and Dean of Mathematics at the University the key elements of industrial competitiveness and to Professor Ted Wilson stepped down Davis

Department of Aerospace Engineering & Mechanics 6 University of Minnesota Department of Aerospace Engineering & Mechanics 7 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

the practice of engineering by enabling them to “look Welliver, Corporate Senior Vice President of Engineering New Instrumentation Lab Course Part of over the shoulder” of working engineers at several & Technology. Mr. Welliver was recognized throughout BAEM Semester Requirements levels of the technical and management career paths. the aerospace industry for his vision and leadership When they have completed the program, they will have in promoting a close working relationship between As part of the conversion of the BAEM program a network of contacts within Boeing and among their industry and academia and between engineering and to semesters, a significant change was made Faculty Fellow peers that can form the basis of long- manufacturing. He was also dedicated to exploiting to the laboratory courses. Under quarters there term relationships. advances from the world of science and technology for were three laboratory courses, one each with the benefit of aviation and space endeavors. experiments in the areas of Fluids, Solid Me- The program is named in honor of the late A.D. “Bert” chanics, and Dynamics and Controls. Students were required to take two of these three cours- es. To solve the problem of how to convert these Parachute Systems Technology Short Course three quarter courses into two semester courses and to address the need for more instruction The AIAA Aerodynamic Decelerator Systems Technical course. There were 12 NASA participants (including on the instrumentation and computers used Committee, NASA/Minnesota Space Grant Consortium, one astronaut), 4 from the Navy, 2 from the Army and in the laboratories, it was decided to devote and the Department of Aerospace Engineering and one from the Air Force. There was one student from the the first laboratory course to instrumentation Mechanics at the University of Minnesota sponsored University of Alaska and 10 of the students were from th and computer data acquisition and the second the 7 Parachute Systems Technology Short Course at foreign industries and governments. The remainder of laboratory course to the areas of fluids, solids the Radisson Metrodome in Minneapolis Minnesota, the students came from the U. S. Aerospace Industry and dynamics. Advanced control experiments One of the six new laboratory stations for the BAEM required Oct. 26-30, 1998. Lecturers were Drs. Vance Behr and including Lockheed Martin, AlliantTech Systems, Pio- are now part of an elective course. Instrumentation Laboratory Course. Dean Wolf of Sandia Labs, Dr. Karl-Frederick Doherr neer Recovery Systems, and Irvin Industries. Student of the German DLR, Dr. William L. Garrard of the AEM evaluations of the course were very positive. The goal of the Instrumentation Laboratory Course, as station consists of an instrument rack which contains a Department, and Dr. Stephen Lingard of Martin-Baker the first required laboratory course for the BAEM de- dual trace digital storage oscilloscope, digital voltmeter, in Great Britian. Forty-six students participated in the gree under semesters is called, is to give the students function generator, power supply, single board computer a fundamental understanding of the measurement of and bread board area. The various input and output con- a physical quantity using a sensor, instrumentation nections to the single board computer are brought out to amplifier and analog to digital converter and finally a Per Capita Expenditures from External Sources by IT Department—FY98 solderless connector strips around the edge of the bread computer to record the measured value. In addition, board area to allow the students to connect the circuits this course introduces the students to statistical and they construct on their bread boards to the computer. uncertainty analysis of experimental data. In order to The oscilloscope, meter and function generator allow the expose the details of the operation of the hardware to students to test and exercise the circuits they construct. the students, a very low level approach was used. The These circuits include digital to analog and analog to computer the students use for this lab is a single board digital converters and instrumentation amplifiers. By computer based on an 8-bit microprocessor. Computers the end of the term, the students have the knowledge of this type, usually called embedded controllers, are to construct a circuit that connects a sensor, such as a very common in industrial applications, for example strain gage, to a digital input port on the computer. The the Boeing 777 uses over 1200 microprocessors dis- lab station also includes a Windows NT Workstation. This tributed throughout the aircraft and most modern computer runs the Integrated Development Environment automobiles contain several microprocessors. Thus the that is used to program the single board computer. So instrumentation lab course has the added advantage while the students only have to figure out how to access of introducing the students to embedded controllers, the hardware of the small single board computer from which account for the largest number of microproces- their program, they get to operate in a familiar comput- sors used in the world. ing environment. Many of the course materials for the A new facility was required for the Instrumentation Instrumentation Lab are available over the Internet. The Laboratory Course. This lab is situated in room 301 of URL for the course’s home page is Akerman Hall. The Institute of Technology provided the http://www.aem.umn.edu/courses/aem4601/ funds to equip this room with 6 identical lab stations as well as a TA station with a printer. A typical lab sta- The students are encouraged as part of this course to use tion is shown in the accompanying photograph. A lab the Internet as a resource, for example, data sheets for most electronic parts are now available over the Internet.

Department of Aerospace Engineering & Mechanics 8 University of Minnesota Department of Aerospace Engineering & Mechanics 9 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

research. “My husband needed a pilot, so I went Piccard were posthumously inducted into the Inter- out and learned how to pilot a balloon. I didn’t have to national Space Hall of Fame in Alamagordo, New Looking Back... be convinced. I don’t know if it was his idea or my idea Mexico, in recognition of their lifetime achievements Paul Sorenson or just spontaneous combustion. It was something that in aeronautics. Earlier this year, their son, Donald, was Director of Communications was obvious, that’s all.” recognized by the National Aeronautic Association for his work in establishing hot-air ballooning as a serious With that, she became the first licensed female balloon- Institute of Technology sport in the 1960s. ist in the world and the first woman to ascend into the stratosphere. She Donald Piccard rode alongside his On a cool, clear Michigan morning in October 1934, Jean Piccard joined the University of Minnesota fac- continued to collaborate with her mother during several flights in the Jean and Jeanette Piccard stepped inside the pressur- ulty in 1936. He taught courses in stratospheric flight husband until his death in 1963, after 1930s. In 1966 she described those ized, air tight gondola of a balloon named Century of problems while doing research and conducting many which she became a consultant to flights and the wonder and awe with Progress and launched themselves into history, soaring pioneering balloon flights. One of his first projects at NASA’s manned spacecraft division. which she and Jean approached their to a record atitude of 57,979 feet. the University was the construction of an unmanned hy- A decade later, in 1974, she gained work: “When you fly a balloon you drogen-filled transparent cellophane balloon designed notoriety as one of the first women don’t file a flight plan; you go where The flight, piloted by , proved that hu- for ascents 10 to 14 miles into the stratosphere. (The ordained as an Episcopalian priest. the wind goes. You feel like part of the mans could tolerate ascents into the frigid stratosphere balloon’s panels were held together by a revolutionary She died in 1981. air. You almost feel like part of eternity, with gondolas and balloons designed to withstand the product — adhesive-coated cellophane strips called and you just float along.” low pressures of the atmosphere’s isothermal layer. The This summer, Jean and Jeannette J.F. Piccard preparing for a balloon Scotch transparent tape.) The balloon was launched technology, developed by Jean and his twin brother, launch — Paul Sorenson from Memorial Stadium in 1936. It rose more than 50,000 Auguste, laid the groundwork for manned space flights feet and traveled nearly 600 miles, landing in a field in decades later. Arkansas. He later devised the multiple-balloon con- Special Note: , who is the great nephew of Dr. Jean F. Piccard, successfully circled the cept and in 1937 made the world in a balloon this past March, along with his co-pilot Brian Jones. He had tried this in 1997 and first manned ascent utilizing 1998, but his balloons fell short of their destination. He is a third-generation adventurer. Bertrand Pic- multiple balloons. card’s grandfather was , who was the twin brother to Jean Piccard. Bertrand’s father Although Auguste remained Jacques was a noted undersea explorer. in , he and Jean continued to collaborate throughout their careers. Their work led to the devel- Exchange Visitor Program opment of a frost-resistant window for high-altitude This program is sponsored by the University of Minne- Dr. Antonio Francisco Fortes, is from the University of balloon gondolas and an sota to provide courses of study, learning, and research Brasilia in Brazil. He was appointed by Professor Dan electronic system for emp- opportunities, in the various fields of instruction and Joseph as a Senior Research Associate in the Depart- tying ballast bags. Jean also research conducted by the University of Minnesota for ment while on leave from his University. He has been experimented with qualified foreign students, professors, research scholars engaged in collaborative research with Professor Joseph balloons and helped design and short-term scholars to promote the general interest on topics related to solid-liquid flows and cavitation. the high-altitude polyeth- of international educational and cultural exchange. Professor Toshio Funada was a visiting researcher from ylene balloons that the Visitors in ‘98–99 were: March-June, 1999. He was sponsored by the Ministry of United States Air Force used Education, Science and Culture in Japan who provided for manned flights of up to Miguel Charlotte, a Ph.D. student from France, returned travel grants and maintenance for his research travels. 100,000 feet. to the Department for the second phase of his research During his visit here he was hosted by Professor Dan in the Mechanics of Solids under the direction of Pro- Jeannette Piccard was at her Joseph and engaged in joint research with Joseph’s fessor Lev Truskinovsky. He expects to be in this phase, husband’s side through it research group in projects related to solid-liquid flows which began on March 1, 1999 thru September 30, 1999. One of Dr. Jean Piccard’s first projects at the University was constructing an unmanned all. In a 1966 interview, she and other multiphase flow projects. hydrogen-filled transparent cellophane balloon for ascents 10 to 14 miles into the described how she became stratosphere. The balloon was successfully flown on June 24, 1936. involved in the pioneering

Department of Aerospace Engineering & Mechanics 10 University of Minnesota Department of Aerospace Engineering & Mechanics 11 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

DEPARTMENT NOTES design project, “Mission to Comet Temple–1.” They also Alumni Highlights had a display featuring the Design Class RC model. Professor Thomas Shield and John Tucker, AEM Scientist, NASA Academy ­in Aeronautics at NASA Dyrden Flight Christopher J. Armstrong (BAEM 1986), is President gave departmental tours and demonstra­­­ted the wind Research Center. Jake Hageman and Jim McDonald, design class TAs of Topher AeroCAD, a 2D and 3D CAD service based tunnel for 45 eighth graders from the Benjamin Ban- participated in the Exploratory Scouts in Engineering in Osceola, WI. Current clients include Powersport neker School in Minneapolis. This event was sponsored Dorothea Czernik worked with fourth through eighth Day in the Department that was held October 15, 1998. Aviation, manufacturers of the Powersport 200 and by the APEXES Program in IT. grade girls as part of “Looking Towards the Future (for- They did a wind tunnel demonstration that featured a Superlight Rotary Aircraft Engines; Ratech Machine, mally Opportunities Day for Girls)” on April 24, 1999, BD-5 model, fabricated by students in our senior design Inc, a CNC machine shop with clients ranging from organized by the IT Program for Women. She did a class that was installed in our 54 x 38 inch recirculating accoustic ceiling tile manufacturers to Wipaire Inc., a New Departmental Postdocs water channel and wind tunnel demonstration as part wind tunnel and showed how lift and drag are measured St. Paul based manufacturer of amphibious floats for and Other Academicians of their activities in the Department. at different angles of attack and speed. They also gave a broad range of aircraft. a brief description of the department and explained ­­­Dr. Leonard Imas began work as a Research Associate Jenny Cordina and Dorothea Czernik did wind tunnel how and why wind tunnels are used. Jimmy Jingtao Feng (Ph.D.Mechanics 1995) is an under the direction of Professor Graham Candler in demonstrations for 56 sixth grade girls from Rosemount, Associate Professor at Levich Institute, City College of March of 1999. Dr. Imas earned his Ph.D. in Hydrody- Scott Highlands, and Dakota Hills Middle Schools for Jeff Barker and Kostantinos Hennighausen, both AEM CUNY, New York, NY. namics from the Department of Ocean Engineering Science Exploration Day on May 15, 1999. John Tucker, graduate students, served as resource persons and at the Massachusetts Institute of Technology and his our AEM scientist, assisted them. participated in other activities for systemic science Thomas Konicke (M.S. Aero.Eng. 1981) is a Lt. Col. in M.Eng. in Aeronautical Engineering from the Depart- reform effort: ScienceWorks, the Science Education the U.S. Air Force ment of Mechanical and Aeronautical Engineering at During the summer of 1998, two of our undergraduate Program in the Minneapolis Public Schools (MPS), Rensselaer Polytechnic Institute. He has been working students did internships at Boeing in Seattle. Dorothea which is sponsored by a NSF grant through Science on a research project that involves the modification of Czernik worked with the Weight Engineering Depart- CentrUM and College of the Schools, University College, a large computational fluid dynamics code to include ment of the Boeing Commerical Airplane Group and under the direction of Susan Henderson. The goals of a new implicit algorithm. participated in product development for large airplac- the NSF project are first, to prepare all K-8 teachers to es including derivatives of the 747 airplanes. Jenny teach state-of-the arts science curriculum and second, Dr. Xiao-Yen Wang was an Adjunct Assistant Professor Cordina worked in the Aerodynamics Engineering develop the support and structures that will sustain an in the Department this year. She taught our AEM 5250 Department of the Boeing Commercial Airplane Group excellent K-8 science program in the MPS beyond the in the fall and conducted research with Dr. Candler the and participated in product development and airplane life of the grant. rest of the year on a project using a new computational performance for the 777 airplane. fluid dynamics code that has very low dissipation prop- erties, making it ideal for aero-acoustics applications. Professor Andy Vano and the following AEM students: Dorothea Czernik, Matt Gast, Erick Hokenson, Brad Dr. Gary Chapman was a Visiting Professor in the De- Kelley, Mariann Jansen, Todd Colten, Michael Olson, partment for Spring­ Quarter. He taught AEM 5244, Carlos Mostek, Carl Roos, Brad Herzberg, Alfred Leano, Hypersonic Aerodynamics, and conducted research Erick Edgar, Reagan Woolf, Jenny Cordina, Doug Muerle, with Dr. Candler on transition to turbulence in hyper- Sukjoo Choi and Masato Ishii,and the two design TAs, sonic reacting flows. He came to us from University of Jake Hageman and Jim McDonald, all assisted with California, Berkeley, where he is an Adjunct Professor. giving tours of the AEM Department for IT Week’s Open Dr. Chapman received his bachelors degree from our House. Sixty high school students participated in this department in 1957. Previously, Dr. Chapman had a long event. The tours included a wind tunnel demonstration and distinguished career with NASA Ames Research using the Design Class “Thunder” airplane design, a BD-5 Center from which he retired. wing structural test demonstration, and a computer demonstration featuring the Design Class Spacecraft Student Notes

Abbey Eichman is spending her summer at the 1999

Department of Aerospace Engineering & Mechanics 12 University of Minnesota Department of Aerospace Engineering & Mechanics 13 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

AIAA HOSTED REGION V STUDENT CONFERENCE Force Academy with their paper entitled, “Periodic Blowing and Suction for Delta Wing Vortex Control in a Water Tunnel.” 3rd Place: Keith Gray—-Rolla with his paper entitled, “Computational Study of Unsteady The AIAA Student Separated Flowfields Surrounding a Flapping Airfoil at Very Low Reynolds Numbers.” Branch and the Twin Cities Section of AIAA hosted the Region V Graduate Student Conference Division April 28-30, 1999, at 1st Place: Michael Mur- the University of Min- din and Scott ­Foster — nesota. Participating Wichita State University schools from the Mid- with their paper entitled, west Region V were “Inexpensive Quantita­ , tive Flow Visualization.” Colorado State Uni- versity, University of 2nd Place: Vacant due to Colorado, U.S. Air Force a disqualification. Academy from Col- 3rd Place: Manohari Ra- orado, University of mish—Iowa State Uni- Missouri–Columbia, Pictured above some of the awardees from the Conference along with Dave Myren on the left versity with her paper University of Missouri– and Kasey Roskopf and Sara Brandenburg on far right. entitled, “Correlations Rolla, Parks College of to Predict Stream­wise St. Louis, Washington Influence Regions of University of St. Louis, University of Kansas, Kansas universities in Region V. There were 24 undergraduate Pictured 2‑Dimensional Turbu- above and State University, Wichita State University and the and 10 graduate papers presented. Officials from AIAA lent Shock Separted at right are University of Minnesota. A total of ­74 students and 8 Headquarters also attended the conference. Flows.” students at faculty attended the paper conference from 7 of the The conference began with registration and a recep- Kasey Roskopf and Sara the AIAA th Conference tion on Wednesday, April 28 . Paper presentations Brandenburg of the Banquet were given at both the undergraduate and graduate University of Minnesota levels on Thursday and Friday. Thursday afternoon also AIAA Student Chapter included a tour of the Northwest Airlines and dinner were the Conference Co-Chairpersons. at Planet Hollywood and other special activities at the With the assistance of David Myren Mall of America. The conference concluded on Friday from the AIAA Twin Cities Professional night with an awards banquet at the Campus Club at Section and other AIAA students, they the University of Minnesota. The guest speaker was Mr. planned and coordinated the events of R. Gale Schluter, Vice President and General Manager of the conferen­­­­­ce. Special thanks to the Expendable Launch Systems for Boeing in Huntington Aerospace Engineering and Mechanics Beach, CA. faculty, staff, graduate and undergraduate students The winners of the Student Paper Conference were: and the many industry contributors and volunteers 1998-99 AIAA Officers who assisted with a number of conference events. Co-President Sara J. Brandenburg Undergraduate Division The conference was sponsored by the AIAA Student Branch, the Twin Cities Professional Section, and the Co-President Kasey S. Roskopf 1st Place: Jonathan Dowty­—U.S. Air Force Academy Department of Aerospace Engineering and Mechanics Secretary Lisa Parkin with his paper entitled, “A Wind Tunnel Investigation at the University of Minnesota. Treasurer Brad Herzberg to Reduce the Drag Associated with External Protuber- Pictured above: Mr. R. Gale Schluter speaking at awards banquet. ances on the AC-130H Gunship.” 2nd Place: Charles Cain and Daniel Kaercher—U.S. Air

Department of Aerospace Engineering & Mechanics 14 University of Minnesota Department of Aerospace Engineering & Mechanics 15 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

Solar Vehicle Project NASA Astronaut IT Commencement Speaker Colonel Robert Cabana was the featured speaker at the has served as a spacecraft communicator (CAPCOM) in Institute of Technology graduation ceremony on June Mission Control during Space Shuttle missions, and as 4th. His most recent spaceflight, the STS-88 Endeavour Chief of Astronaut Appearances. Prior to his assignment (December 4-15, 1998), was the first International Space to command STS-88, Cabana served three years as Station assembly mission. During the 12-day mission, Chief of the Astronaut Office. A veteran of four space Unity, the U.S. built node, was mated with Zarya, the flights, Cabana has logged over 1,010 hours in space. He served as pilot on STS-41 (October 6-10, 1990) and STS-53 (December 2-9, 1992), and was mission com- mander on STS-65 (July 8-23, 1994). Colonel Cabana is originally from Minneapolis, Minnesota and graduated from Washburn High School in Minneapolis. During his visit here, he had lunch and met with several AEM faculty, students and industry representatives. Dorothea Czernik, AEM Undergraduate, was selected

Pictured above from left to right are Jan Beavers, Gordon Pictured above is the Solar Car Team for this year. Beavers and Col. Robert Cabana. University of Minnesota Institute of Technology stu- miles of Australia’s outback. This program maximizes’s dents designed and constructed their fourth generation students learning by participating in a challenging Russian built Functional Cargo Block (FGB). Two crew solar vehicle, the Aurora 4. The 38 team members spent environmental project, developing professional-level members performed three space walks to connect two years improving the key aspects of the design and work skills enhancing their leadership and teamwork umbilicals and attach tools/hardware in the assembly manufacturing of the car. The Solar Car Team’s two skills, educating the public and having fun. Aurora 4 and outfitting of the station. Additionally, the crew premier solar car races include: Sunrayce 99, a 10-day has over 1999 solar cells, a top speed of 80 mph, and performed the initial activation and first ingress of the Pictured above from lef to right Dorothea Czernik being race in June 1999 spanning over 1300 miles starting in at 55 mph, it only uses the power of a 1600 watt hair International Space Station preparing it for future as- presented with the Cartwright award by Dick Hedger and Washington, D.C. and ending at Epcot Center in Orlan- drier. More information can be found at: sembly missions and full time occupation. The crew also Dean Davis do, Florida where they came in fourth out of 29 college http://www1.umn.edu/umnsvp/aurora4/index.html performed IMAX Cargo Bay Camera (ICBC) operations, teams; the World Solar Challenge in October 1999 where and deployed two satellites, Mighty Sat 1 built by the The AEM Department is one of many sponsors that to receive the 1999 Paul A. Cartwright and IT Alumni they will compete against teams from multinational USAF Phillips Laboratory and SAC-A the first successful provides financial support for this project. Society Award for Outstanding Service in student ac- corporations, high schools and colleges across 1,880 launch of an Argentine satellite. Selected by NASA in tivities and/or community projects and was honored June 1985, Cabana completed initial astronaut training at the June 4th IT Commencement Ceremony. in July 1986, qualifying for assignment as a pilot on future Space Shuttle flight crews. His initial assignment Joseph B. Mueller, AEM Undergraduate, was honored to Kids Program ‘99 was the Astronaut Office Space Shuttle flight software be the Student Speaker at the Institute of Technology’s th Nina Tortosa and Dorothea Czernik worked with our and were here on various dates from June to August. coordinator until November 1986. At that time he was graduation ceremony on June 4 . Joe’s speech follows Kids Program ’99 this summer. Both Nina and Dorothea They made bottle rockets, Estes rockets and whitewing assigned as the Deputy Chief of Aircraft Operations for on the next page. received their undergraduate (BAEM) degrees here airplanes. They learned basic concepts of gravity, thrust, the Johnson Space Center where he served for 2-1/2 at Minnesota, and are now graduate students in the lift, and drag of space and aircraft. Everyone had a blast! years. He then served as the lead astronaut in the Shut- Department. The students ages were 9-15 years old tle Avionics Integration Laboratory (SAIL) where the Orbiter’s flight software is tested prior to flight. Cabana

Department of Aerospace Engineering & Mechanics 16 University of Minnesota Department of Aerospace Engineering & Mechanics 17 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

1999 IT Commencement Speech comes to mind. A recent graduate Now is the time for reflection. Now from the U, and currently a history is the perfect time to contem- teacher at Hopkins Junior High, plate what you’ve done with the by Joseph B. Mueller he always seems to have some opportunities you’ve been given. Good evening everyone. A few I’m sure most of you would agree Three hours later, we’re in Min- remarkable fact to inform me of. Have you done enough? Are you weeks ago, when I excitedly told with me when I say that one of the nesota, where the wind chill has You see, an IT grad living with a happy with the decisions you’ve a few of my close friends that I best facets about attending the brought it down to 75 degrees CLA grad makes for an interesting made and the path you’ve taken? would get to speak at graduation, University of Minnesota is its great below zero, and the doors of arrangement: He provides me Tonight, and tomorrow, and the they all had the same reaction: diversity of people. In my time our rental car are conveniently with free history lessons, while I day after, I encourage you to be “Wow… Why on earth would here, I’ve studied with and made frozen shut. The moving trucks program the VCR for him. Well, he proud of your accomplishments, you want to do that?!” I will be friends with people from Sri Lan- containing everything we owned mentioned something in one of and to be moved by your disap- honest—their response made me ka, the Netherlands, India, Germa- are stuck in a snowstorm in Iowa, Joe Mueller these lessons one day that I felt pointments. So, everyone wearing think. Let me assure you, though, ny, Brazil, and yes, Wisconsin. What forcing us to live out of our suit- needed to be shared with all of caps and gowns, all of you who that I feel very privileged and am a rich pool of resources we have cases for two weeks. Even after we be living there with you. I think at you. In a recent study, over 1,000 have pulled so many all-nighters extremely thankful to be here to draw from in each other. Myself, got settled in, it was strange being this point, we all asked ourselves terminally ill people from all over and made so many little sacrifices tonight. I want to extend a sincere I don’t come from anywhere too the only family on the block that “why? But here we all are. Finally this country were interviewed. for that diploma, I encourage you thank you to the faculty members terribly exotic—just the small didn’t own a snowplow. That was a graduating. They were asked one simple to take advantage of this time, to on the selection committee for yet unique little town of Ironton, transition I will never forget! For most of us, the move to col- question: If they had the chance to reflect, and to ask yourself “why?” giving me this opportunity to say Missouri. It was your typical small go back and to improve on some Most of my friends from Hibbing lege was accompanied by a move- Why did I want to speak tonight? a few words. But the question town. We had more people on our aspect of their lives, what would still give me a hard time, claiming ment of our identity. How could it After taking some time to reflect remains: Why on earth do I want high school football team than we it be? Nearly everyone replied that I never learned how to be a not be? In a sudden surge of inde- a little myself, I finally figured out to do this? And that is a very good had enrolled in the high school. with the same three answers, now true Minnesotan. Since my move pendence, we are surrounded by what to tell my astonished friends. question. In fact, I think it is safe to Children growing up in Ironton known as the three R’s of hap- north, I haven’t learned how to a thousand new minds who share I have learned the hard way a few say that “Why?” is a pretty import- would pass their time by trying piness: Relationships, Risk, and ice-skate, I’ve failed to learn how the common desire to learn. Over different times in my life what it ant question for all of us to consid- to find it on the map. After going Reflection. to ski (three or four times), and I the period of a few short years, we feels like to work hard chasing a er right now. back to visit recently, I found there definitely have not learned how to trade innocence for experience, What a powerful discovery! Think dream, and then once realizing was only one place that hadn’t Why are we all here tonight? Why play or even understand the game immaturity is lost to responsibility, about it: To know, while there is it, also realizing that I’ve been gone out of business—the unem- have we decided to have this of hockey. However, the experi- and we start to realize what our still life to be lived, what the most chasing in the wrong direction. I ployment office. Despite all of its ceremony? Well, this certainly isn’t ence of the transition did teach priorities are. A poet by the name important parts are! To put it in wanted to share this message with excitement, though, I did not stay the first time that hundreds of IT me quite a bit about some other of Robert Frost once said that: academic terms: It’s like having you, because of the opportunities in Ironton for very long… at the students gathered together in a important things. I discovered “The world is full of willing peo- all of the answers in the back and the decisions that you have young age of 14, I experienced the dark room, wearing dark robes that a little bit of hardship is the ple; some willing to work, others of the book—you have to take ahead of you. I hope that I haven’t first of a few significant transitions. and funny hats—Star Wars Epi- best way to better yourself; that willing to let them.” Well, let me advantage of it! Tonight, as we thrown too much advice at you I found myself moving to Hibbing, sode I opened just a few weeks change should not be resisted, but say that, having earned this cap think back on our college careers, tonight. But more importantly, I MN. You may have heard of it… ago. But I think the reason we are rather embraced; and that we can and gown no differently than any we can be reminded of our own sincerely hope that we all have Hometown to Bob Dylan and holding this ceremony is because never know what blessings await of you did, I am fairly certain that individual journeys. We can recall the wisdom and the patience to Kevin McHale, and just two short this is a time to reflect, a chance us in life, or in what mysterious we must be the ones willing to the risks taken, the relationships spend some time reflecting on our hours from the Canadian border. to look back on the past four, five, form they may come. work! The challenge of making formed. Think about this: it has lives, understanding our priorities. yes some of us six, years of our it through the rigors of the Insti- So what is it like moving from Can you remember what it was been those times when we have So… Congratulations IT grads! college experience, and to let it all tute of Technology has not been Missouri to Minnesota, you may like when you first arrived here? decided to take a risk, to walk the You did it! You made it out be- sink in. This is a time of transition, the only source of our education, ask? Couldn’t be that difficult, First, you get dropped off in the long way home, to say hello, to fore semesters! You have earned an opportunity for each of us to though. So much of what college right? Well, there certainly are a lot middle of the city, with some stay up late talking, to lend a kind the right and the ability to start evaluate both what we have done, offers is the, unknown, limitless, bigger challenges that one may clothes, a few crates full of toilet- word—it has been those times chasing your dreams. Now is the and what we are about to do. We exuberant element of the people experience in life—but allow me ries, a microwave, a backpack, and when we have grown more than time to decide what your dreams all draw from our own unique we encounter everyday. to paint a picture for you. Imagine a lava lamp. When you find your ever. truly are. experiences, but for me, it has Christmas-time in St. Louis. It’s a dorm room, it reminds you of your Now, when I hear the words un- Hopefully, the relationships and been these times of transition and mild 35 degrees (above zero). My closet back home, and then you known, limitless, and exuberant, the risks have been taken care of change that have allowed me to family and I board an airplane. meet the other person that will my college roommate and best over the past four or five years. learn the most about myself. friend, Patrick Duffy, immediately

Department of Aerospace Engineering & Mechanics 18 University of Minnesota Department of Aerospace Engineering & Mechanics 19 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99 Minnesota Space Grant Consortium DEGREES AWARDED 1998-99 Astronaut Heide Marie Stefa- Northrup Grumman’s B-2 plant, west State University in Marshall, nyshyn-Piper, NASA astronaut, was the Jet Propulsion Laboratory, the Minnesota represents SWSU in the Bachelor of Aerospace Engineering and Mechanics the keynote speaker at the second National Test Pilot School, Aerovi- consortium. Dr. Murphy was a vis- annual “Space Science Across the ronment, and Burt Rutan’s Scaled iting professor at the US Air Force Curriculum” conference sponsored Composites. We also had the chance Academy in Colorado Springs, CO December, 1998 June, 1999 to travel to Washington, DC to meet by the MnSGC and held at the the Goddard Academy and visit where he collaborated in the Aster- Andres Mediavilla, magna cum laude Todd Colton Science Museum of Minnesota, NASA Headquarters. Later in the oid photometry research program Jenny Cordina, with high distinction March 13, 1999. Heide is a Lieu- summer, we drove to NASA Ames using the USAF’s 24” telescope. March, 1999 Amy Cornielle tenant Commander in the US Navy to meet the Ames Academy. Boeing and Honeywell have also Cory Allen Boese, with distinction Dorothea Czernik and is assigned to the team that been added as industrial affiliates. The summer’s experience was Steven Lee Boysen Mark Dmytryszyn supports Space Shuttle launches extremely valuable. Not only did The key to Honeywell’s participation and landings. The conference spon- is its membership in the Minneap- Thomas John Jones, with distinction Eric Edgar I gain research experience, but I Mark Jerome Ledermann Emily Eelkema, with high distinction sored several master teachers who also learned about the aerospace olis Operations Technical Council contributed their expertise in how industry as a whole. It also helped (MOTEC) that was established in Mishawn Rebecca Mielke Matthew Gast to integrate space science content me to decide what I wanted to do 1978 to serve Honeywell’s techni- Joseph Bernard Mueller, with high distinction Joseph Gresser into existing K-12 curriculum. Walt after graduation - in August I will cal community. MOTEC sponsors David Michael Skalicky, with distinction Masato Ishii Tremer of Muhlenberg College, PA, start work as an associate engineer several K-12 outreach programs John Ryan Steffen Douglas Muerle gave the closing remarks for the in the Flight Systems Section of the that involve women and minorities Troy Clinton Welker Jesse O’Niell-Oine Jet Propulsion Laboratory. conference about his experience as in engineering. Boeing has been Kevin Park astronaut in training with Christa a long-time supporter of the AEM The MnSGC has added three new Spencer Rasmussen McAuliffe for the ill fated Challenger Department’s outreach efforts and Carl Roos, with distinction Shuttle flight of 1986. affiliate members. Dr. Ken Murphy of the MnSGC. of the Physics Department and Di- Ryan Spice The MnSGC sponsored three NASA rector of the Planetarium at South- The MnSGC continues to sponsor Craig Wightman summer academy candidates in undergraduate scholarships and 1998. Emily Eelkema (Dryden), Jim fellowships in addition to K-12 and Chase (Goddard), and Wendy Davis general public outreach programs. (Ames). All three candidates are U This year, the annual Sverdrup Doctor of Philosophy of M students that graduated this lecture series hosted at Augsburg spring. Emily comments about her College featured Dr. John Freeman, experience at Dryden follow: Professor of Space Physics and Eric B. Carlson, Mech., 7/99 Clara Mata, Mech., 11/98 ­The NASA Academy in Aeronautics Astronomy at Rice University in Houston, TX. Dr. Freeman’s lecture Wendy Crone, Mech., 11/98 Harry Vinagre, Aero.E., 10/98 was a very unique experience. It Timothy J. Hall, Mech., 7/99 Gregory Weirs, Aero.E., 12/98 is held at NASA’s Dryden Flight was titled “Storms in Space” focusing Research Center in Edwards, CA. As on the need to understand, model, Vincent Kuo, Aero.E., 4/99 a research associate, I worked with and even forecast the severity and John Bosworth in the Controls and occurrence of storms that rage high Dynamics Branch, studying the sta- above the earth’s atmosphere. Dr. Master of Science bility of the X-38’s landing trajectory. Freeman is part of the scientific The X-38 will be used as a ‘lifeboat’ on community examining the new field the International Space Station, and of space weather. is designed to make a completely Gerald Brenden, Aero.E., 3/99 George Platanitis, Aero.E., 6/99 autonomous landing. For questions and comments on Ling Jiang, Mech., 11/98 Travis Smieja, Aero.E., 8/99 1998 Dryden Academy in a 747 The location of the academy is ideal MnSGC programs please see the Hoilum Helen Lee, Aero.E., 6/99 Nina Tortosa-Boonaker, Mech., 8/99 Engine. Standing: Kyle Snyder for learning about the aerospace website at http://www.aem.umn. James McDonald, Aero.E., 7/99 (director), Emily Eelkema (UofM), industy. Companies toured includ- edu/other/msgc. Faezeh Mojtahed, Mech., 12/98 Nathan Palumbo. Sitting: Christie ed Lockheed Martin Skunkworks, Bertels, Aaron Jacobovits, Heather the Boeing Space Shuttle Facility, Hillebrandt, Justin Garr.

Department of Aerospace Engineering & Mechanics 20 University of Minnesota Department of Aerospace Engineering & Mechanics 21 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

as the 1998-99 spacecraft design project (see mission statement). Senior Capstone DesignP Classroject “Oasis”: The Spacecraft Design Team was organized into six disciplines (see tabulation) at the beginning of Sample Return Mission To Comet Temple-1 Fall Quarter; two student Project Managers were chosen to lead the OASIS MISSION: Spacecraft Team team and complete a conceptual design by the end of the quarter. The MISSION STATEMENT: The Oasis Mission is to rendevous with the comet Tempel 1, land on the Transportation Systems discipline comet’s surface to scientifically test the comet’s physical properties, map the comet, and return was responsible for the integration to Earth with two representative samples in the most economic and efficient manner possible. of the entire vehicle; Pro/ENGINEER was used as a tool to assemble the Project Managers Systems and Equipment Structural Systems vehicle. The Lander/Return Systems  Kasey Roskopf  Scott Valminck  Brad Kelley discipline used comet models de-  Ryan Steffen  Mike Olson  Ryan Swanson veloped by JPL to design a method “Oasis” Model Construction. Left to right: Ryan Swanson, Erik Hokenson, Carlos  Mark J. Effertz  Phil Peterson of anchoring the lander to the Mostek, Jamison Roman comet so that a core sample could Transportation Systems be taken. The Structural Systems would require for control, navigation the team resolve conflicting issues.  Shea Peterson-Burch Aeroshell (Earth Return) Propulsion Systems discipline was responsible for the and communication, and then de- The team successfully presented  Jamison Roman  Klayton Ives  Mishawn Mielke primary structure of all vehicles. termined the power requirements their design at a formal Conceptual  Amy Cornielle  Nathan Brusius  Erik Hokenson The Propulsion System discipline for all the systems on-board the Design Review at the end of Fall  Emily Eelkema  Carl Roos determined the most efficient tra- spacecraft. The Aeroshell discipline Quarter. investigated aerobraking to recover jectory between Earth launch and The design team was reorganized at the samples to low earth orbit. Each Lander/Return System comet rendezvous; they selected the beginning of Winter Quarter to discipline presented their primary  Joe Gresser an ion propulsion system follow- include special project groups which design issues to the entire team at  Scott Schuh ing JPL’s successful Deep Space 4 addressed the following open is- regularly scheduled team meetings.  Todd Colten demonstration. The Systems and sues: solar-array deployment, lander The Project Managers organized and  Carlos Mostek Equipment discipline determined attachment, core sampling, primary conducted the meetings and helped what kind of avionics the mission structure design and mission tra- jectory. Each group designed and Jet Propulsion Laboratories (JPL) has fabricated a working model of their overseen exploration of the Solar design and used it to test their de- System with robotic spacecraft during sign concepts. An additional group the past three and one half decades. prepared a video to document We have all watched in amazement as the teams efforts. The result of the Sojourner explored Ares Vallis or Gal- Spacecraft Design Teams year-long ileo discovered intricate ice patterns effort is summarized in the Pro/ on Jupiters moon Europa. Dr. Garrard ENGINEER graphics presented thought it might be beneficial to our herein. The vehicle is called “Oasis”. students if the design class would do The assembled vehicle is approxi- a project which paralleled one of the mately 6 meters long (with landers, many active JPL initiatives; he arranged not including the 2 X 7 meter solar an on-site visit for Prof Vano to explore arrays), 2 meters in diameter and the possibility. JPLs interest in our stu- has a mass of 1335 kg (including dents and their willingness to share landers and solar arrays). their experiences and perspective was outstanding. Prof Vano selected a sam- Comet Temple-1 Surface Models. First row, left to right Emily Eelkema, Amy ple/return mission to Comet Temple-1 Cornielle, Kasey Roskopf. Back row, left to right: Phil Peterson, Scott Schuh

Department of Aerospace Engineering & Mechanics 22 University of Minnesota Department of Aerospace Engineering & Mechanics 23 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

Senior Capstone Design Class “Thunder” Aircraft Design

THUNDER MISSION: Aircraft DesignTeam MISSION STATEMENT: Design a four-place airplane which will cruise at 225 knots TAS with 800 NM range plus IFR reserves. The airplane will meet FAR Part 23 requirements and will be designed to operate in the future ATC environment with cockpit systems which simplify pilot interface while enhancing safety and utility.

Project Managers Structures Cockpit Systems  John Callan  Koichi Fujimoto  Jesse O’Neill-Oine  Patrick Bergen  Mulugeta Gerbremeskel  Bill Klein  Masato Ishii  Spencer Rasmussen  Jeff Johnson Systems Layout/Weights  Eric Edgar Mission Profile/Operating  Reagan Woolf Powerplant Students holding wing section of Thunder Aircraft. Left to right: Masato Ishii, Koichi Infrastructure Fujimoto, Sukjoo Choi, Eric Edgar, Doug Muerle, Pat Bergin, Alfred Leano.  Mariann Jansen  Doug Muerle  Ryan Spice  Alfred Leano  Troy Welker Aerodynamics power requirement for 260 HP. The GAP engine is a next test group built a scale model and tested it in the AEM  Jenny Cordina generation diesel engine (Jet A fuel is readily available 38 X 54 inch recirculating wind tunnel. Pro/ENGINEER  Dorothea Czernik and less expensive than gasoline) that is designed to was used to NC machine the airplanes wings, horizontal  Matthew Gast be 50% less expensive than currently available engines; stabilizer and a left/right side male molds of the fuse-  Brad Herzberg it also has a very favorable specific fuel consumption lage (vacuum formed with hot plastic). The students (0.36 lbs per HP hour). determined that the airplane was longitudinally stable and controllable and directionally stable. Five students The Cockpit Systems discipline was responsible for built a full scale mock-up of the airplanes cockpit and selecting and arranging the airplanes avionics, con- instrument panel (firewall to baggage compartment) to The Aircraft Team designed a four-place trols and other systems which require pilot interface. evaluate the human ergonomics. Professor Vano’s van airplane (see Mission Statement) and was The Mission Profile/Operating Infrastructure discipline seats were used once again. The students conducted organized into six disciplines (see tabulation) looked at future aircraft weather and traffic information a survey and determined that several comfort-driven led by two project managers. The Systems systems. Together they conceptualized a glass-cockpit design changes were needed and the door frames Layout/Weights discipline used Pro/ENGINEER with two 15 inch displays which presented the pilot with required redesign to improve pilot visibility. to physically integrate all the airplanes compo- properly prioritized and efficiently displayed airplane, nents; several design changes were required traffic, and weather information. These information Perhaps the most ambitious project for the academic to fit the cabin into the fuselage. They also systems were interfaced to a fly-by-wire control system year was building a 1/5th scale radio controlled (RC) used a weight-and-balance spreadsheet to to make it possible for a nonprofessional pilot to safely model. Nine students participated in this activity over locate components such that the final airplane operate the airplane in almost all weather conditions. weight-and-balance were within the Aerody- winter and spring quarters. The students used Pro/ namics allowable weight-and-balance limits Each student was required to study selected design ENGINEER and NC machining to fabricate parts for an (3200 lbs maximum takeoff weight). issues and make a presentation to the team for discus- otherwise conventional RC model construction (balsa sion and resolution. The Project Managers organized wood with monocote covering). A data logger data The Aerodynamics discipline determined and conducted these meetings. The aircraft team suc- acquisition system (DAS) was installed in the RC mod allowable weight-and-balance limits by examining generated a V-N diagram for the airplane per FAR Part cessfully presented their design at a formal Conceptual longitudinal static stability and control characteristics. 23 requirements and used it to size selected parts of the Design Review at the end of fall quarter. Airplane configuration was also chosen to meet per- composite primary structure. The Powerplant discipline formance criteria. The airplane ended up with a 30.2 ft selected a scaled-up TCM General Aviation Propulsion The Aircraft Design Team was also reorganized during wingspan and 26 ft length. The Structures discipline (GAP) engine to meet the Aerodynamics discipline winter quarter to address certain issues. A wind tunnel

Department of Aerospace Engineering & Mechanics 24 University of Minnesota Department of Aerospace Engineering & Mechanics 25 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

SPECIAL DEPARTMENT SPEAKER Lieutenant Commander Heidemaria M. Stefa- nyshyn-Piper gave the lecture on, “So You Want To Be An Astronaut,” as part of the regular departmental seminar series for faculty and students on March 12, 1999. She was selected as an astronaut candidate by NASA in April of 1996 and is currently a member of the Astronaut Support team at the Kennedy Space Center, supporting Space Shuttle launches and landings. While she was here, she participated in the Science Across the Curriculum conference at the Science Museum in St. Paul that is offered through the MN Space Grant Consortium. Lieutenant Commander Heidemarie M. Stefanyshyn-Piper graduated from Derham Hall High School, St. Paul, Minnesota, in 1980; received a bache- lor of science degree in mechanical engineering from Massachusetts Institute of Technology in 1984, and a master of science degree in mechanical engineering Thunder RC Model Flight Test Team. Left to right: Reagan Woolf, Alfred Leano, Masato Ishii, from Massachusetts Institute of Technology in 1985. Doug Muerle, Eric Edgar, Pat Bergen, Brad Herzberg, Sukjoo Choi and Jeff Johnson

el along with sensors to measure dynamic pressure, was recovered without significant damage. A complete angle of attack, normal acceleration, elevator position range check was conducted prior to the third flight to and throttle position. Pat Bergen (an experienced RC determine the extent to which the RFI problem would Recipients of Undergraduate Student Awards 1998-99 airplane pilot) was selected to be the test pilot. A flight effect the control system. The test showed that although test program was prepared which included ground tests the DAS caused very slight control system oscillations, Rose Minkin Scholarship Awardees Brandon Crook (joint scholarship —see also Chester to evaluate DAS / airplane control system interface. The this should not effect airplane control. The pilot lost Gaskell Scholarship) John W. Heidt ground tests indicated that some RFI from the DAS was control of the airplane shortly after takeoff during the Joe Mueller getting into the airplane control system. The problem third and last flight. It appeared that the aileron and Travis J. Schauer was investigated and several modifications were incor- horizontal stabilizer servos were getting full-control Richard G. Pennertz ­­­­­­­­(joint scholarship—see also Richard G. Pennertz porated into the airplane to separate the two systems. spikes. The pilot was able to cut throttle and land the AEM Program Support Scholarship) A decision was made to fly the first flight without the airplane with minimal damage. Is there a more exciting Chester Gaskell Aeronautical Engineering Carl Roos DAS because time was running-out (spring quarter way to end ones academic experience? Scholarship Awardees week eight). The first flight lasted several minutes and April Rogoyski was considered a great success. The pilot flew several Brandon Crook (joint scholarship — see also MN maneuvers to evaluate performance and airplane han- Space Grant Consortium) Control Science and Dynamical Systems Fellowships dling qualities; the flight concluded with an impressive Dorothea Czernik (joint scholarship — see also AEM three-point landing. An engine failure (fouled glow Program Support Scholarship) Jiecai Luo plug) occurred during the second flight; the airplane Saroj Saimek Boeing Scholarship Awardees Abbey Eichman AEM Program Support Paul Hannah Richard G. Pennertz (joint scholarship—see also MN Space Grant Consortium) MN Space Grant Consortium Dorothea Czernik (joint scholarship — see also Ches- Jenny Cordina ter Gaskell Aeronautical Engineering Scholarship)­

Department of Aerospace Engineering & Mechanics 26 University of Minnesota Department of Aerospace Engineering & Mechanics 27 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

Donations: The AEM Laboratory Equipment Fund: Used to purchase Army Research Office Two-Phase Flows of Rheologically Analysis of the X-38 V132 Flight instructional and research equipment. Fund No. 2500 Complex Fluids Control System (Dryden) Advanced Methods for Interceptor ou an ake a ifference Daniel Joseph Gary Balas Y C M D : The AEM Excellence Fund: Used to sponsor lectureships Flow Simulations Donations can be made anytime during the year and by distinguished individuals in aerospace engineering Graham Candler Virtual Fluid-Object Interaction Application of Gain-Scheduled sent to the University of Minnesota Foundation, 1300 S. and mechanics. Please note that this fund also supports Laboratory (Army/DURIP) Multivariable Control Techniques Aerodynamic Breakup, Cavitation, 2nd St., Ste. 200, University of Minnesota, Minneapolis, the Sethna Lecture. Fund No. 2281 Tayfun Tezduyar and Andrew to the FIA-18 System Research & Rupture Fluids MN 55455. Just designate the fund you wish to support. Johnson (Dryden) The B.J. Lazan Fund: Supports activities that promote Daniel Joseph Checks should be made payable to the University of Gary Balas faculty/student interactions and educational activities. Minnesota. The funds to which you can contribute are Aerodynamic Breakup of Liquids Department of Energy Finite Element Computation as follows: If you would like information about establishing a (with Battelle Memorial Institute) Lubricated Transport of Viscous of Compressible Flows with Unitrust with the University of Minnesota Foundation, Daniel Joseph & Gordon Beavers AEM Program Support: Used as the main source of Materials Particular Emphasis on Blunt contact RichardALUM Hatfield,NI D DirectorONATIONS of Development and discretionary funds to support all funds. Fund No. 3739 Break-up of Viscoelastic Liquids in Daniel Joseph Geometrics, Wake Flows, and The department has just purchased a new motor to High-Speed Air Flow Unsteady Behavior (Johnson) Aeronautical Class of 1943 Wind Tunnel Fund: Created Topological Transitions in Liquid/ replace the 50-year old 100-horsepower­ electric motor Daniel Joseph Tayfun Tezduyar by the Class of 1943 to defray costs of a new wind tunnel Liquid Flows in our wind tunnel. The new motor will incorporate a and instrumentation. Fund No. 3585 Design, Modeling and John Lowengrub & Ellen Longmire Large Scale Turbulent Structure in frequency inverter which will enable us to control the Computation of Active Thin Supersonic Jets (Ames) The Chester Gaskell Aeronautical Engineering Schol- motor speed for more efficient wind tunnel operation. Films DiaSorin, Inc. Thomas Lundgren arship Fund: Used for undergraduate scholarships for Using funds provided by the Class of ’43, we continue Richard James & Mitchell Luskin outstanding first-year aerospace students. Fund No. to plan additional improvements to our wind tunnel ­Flowcell Investigation The Minnesota Space Grant 2898 facilities and are grateful to the Class of ‘43 and other Finite Element Computation of Daniel Joseph College Consortium (NASA donors who help to make this possible. the Dynamics of Large Ram Air Headquarters) The John D. Akerman Memorial Fund: Supports the Parachutes The Hoechst-Celanese William Garrard Akerman Professor of Design of our year-long capstone We would like to thank all of our donors for their gen- William Garrard & Tayfun Tezduyar senior design course. Fund No. 3191 erous contributions throughout the year. Company Nonlinear Feedback Control of New HPC Techniques for Finite Study of Spinning Rod Interfacial Aircraft Propulsion Systems Element Simulation of Large Tensionometer used to Measure (Lewis) Ram Air Parachutes Polymer Bands William Garrard & Gary Balas Tayfun Tezduyar & William Garrard Daniel Joseph Recent Research Projects of AEM Professors Numerical Simulation of Numerical Simulation of Atmosphere Entry Flows Atmospheric Pressure Air Minnesota Department of Graham Candler American Chemical Society Computational Tools for the Army Research Laboratory Plasmas (with Stanford Transportation Atomic/Continuum Interface: Optimal Takeoff Procedures for Control of Particle-Laden Flows Army High Performance University) System Simulation and Nanometer to Millimeter Scale Category A. Helicopters (Ames) with Ceramic Actuators Computing Research Center Graham Candler Optimization Aircraft Yiyuan Zhao Ellen Longmire Tayfun Tezduyar ­­Shock Tube Simulations of High- Yiyuan Zhao Richard James, Graham Candler, Parallel 3D Computation of Fluid Altitude Breakup of Thickened Mitchell Luskin, & Chris Light Weight Guideways Used for Dynamics and Fluid-Structure Air Force Office of Army High Performance Simulants (with Battelle) Palmstrøm Personal Rapid Transit Systems Interactions of Ram-Air Scientific Research Computing Research Center Memorial Inst. William Garrard & Gary Balas Parachutes (Johnson) Robust Nonlinear Control Theory Daniel Joseph and Gordon Analysis, Design, and as the Applications to Aerospace Advanced Flow Simulation and Tayfun Tezduyar Computation of Active Materials Modeling Beavers National Aeronautics and Space Vehicles (with CalTech) Robust System Identification and Richard James & Mitchell Luskin Tayfun Tezduyar Simulation of Nonequilibrium Administration (NASA) Gary Balas Validation for Control (Langley) Rocket Motor Plums Application of Linear Parameter High Performance Computation of Aircraft Scheduling and Conflict Gary Balas Simulation of Turbulent Graham Candler Varying Control Methods Hypersonic Flows Compressible Flows, Turbulent Resolution in Air Traffic to Aerospace Systems (with Graham Candler Flows Simulation of TMD Flowfields Management (Ames) CalTech) Graham Candler Graham Candler Yiyuan Zhao Gary Balas

Department of Aerospace Engineering & Mechanics 28 University of Minnesota Department of Aerospace Engineering & Mechanics 29 University of Minnesota THE AEM UPDATE 1998-99 THE AEM UPDATE 1998-99

Studies of Trajectory Synthesis Fundamental Fracture Transitions and Defects in Ordered 1998-99 FACULTY & STAFF Methods and Trajectory Mechanisms in Ductile Single Materials Regular Faculty Sensitivity in Air Traffic Crystals Richard James & Mitchell Luskin University Professor Management (Ames) Thomas Shield Professors Theodore A. Wilson Akerman Professor of Design Undergraduate Internship in High Yiyuan Zhao Gordon S. Beavers Associate Professors Andrew Vano KDI: Direct Numerical Simulation Performance Computing in Fluid Roger L. Fosdick Amy E. Alving and Modeling of Solid-Liquid Dynamics National Heart, Lung, and William L. Garrard Gary J. Balas Adjunct Associate Professor Flows Tayfun Tezduyar & D. Truhlar Blood Institute (NIH) Richard D. James Graham V. Candler Dale F. Enns Daniel Joseph Distinguished McKnight Perry H. Leo Office of Naval Research Regional Mechanics of Injured Loss of Coherence and Formation University Professor Ellen K. Longmire Professor Emeritus Lungs (with Mayo Foundation) of Incoherent Structures at Basic Research on the Daniel D. Joseph, Lev Truskinovsky J. L. Ericksen Theodore Wilson Crystalline Interfaces Improvement of @ &Ú&Ú&Ú&Ú&Ú&Ú& Russell J. Thomas W. Shield Philip G. Hodge, Jr. Respiratory Action of the Perry Leo Magnetostrictive and Shape Penrose Professor, Yiyuan Zhao C.C. Hsiao Memory Alloys Regents’ Professor Robert Plunkett Intercostal Muscles Measurements of Crack Tip and Richard James & Thomas Shield Thomas S. Lundgren Asistant Professor William H. Warner Theodore Wilson Microstructural Strains in Single Tayfun E. Tezduyar Ivan Marusic Crystals Boeing Defense and Space Respiratory System Mechanics @ &Ú&Ú&Ú&Ú&Ú&Ú& Associate Professor Emeritus Thomas Shield Group Shape Memory Alloys (with Baylor College of Medicine) Distinguished McKnight Eugene Stolarik Consortium Theodore Wilson Mechanics of Systems with Bi- Richard James & Thomas Shield Stable Elements National Science Foundation Lev Truskinovsky DURIP-Magneto-Mechanical Ruth Robinson, Testing Machine Temporary Faculty Direct Simulation of the Motion of Nonlinear Control of Systems with Research Specialists Senior Office Supervisor Richard James & Thomas Shield Particles in Flowing Liquid Relative Equilibria Assistant Professor Miguel Charlotte Donna Rosenthal, Daniel Joseph Thomas Posbergh Marek Behr Giuseppe Puglisi Senior Administrative Director Packard Fellowship Gary Chapman Raffaella Rizzoni Lisa Schouviller, Experimental, Analytical and Nonlocal Models in the Mechanics Packard Fellowship in Science and Yohannes Ketema Cornelia Van Etten Accounts Specialist Computational Study of Nematic of Materials Engineering Xiaoyen Wang Greg Swieringa and Optical Elastomers Roger Fosdick Richard James Amy Alving David Vogel, Numerical Methods for Very Large, Technical Staff Application Programmers Experiments in Particle-Laden and Sparse Dynamical Systems Syncrude LTD of Canada Research Staff ­ Buoyancy Driven Flows Jim Frame, Scientist Daniel Boley (CSCI) & Gary Balas Part-time Administrative Staff Ellen Longmire Pipeline Transportation of Postdoctoral Associates Dave Hultman, Managing Research & Studies of Reservoir Stimulations, Bitumen-Froth in Core-Annular Runyuan Bai @ &Ú&Ú&Ú&Ú&Ú&Ú& Engineer Heide Burns, Drilling, Transportation, Flow Mode Hyung Gwon Choi Ray Muno, Scientist Executive Assistant Emulsion Stability and Foaming Daniel Joseph Kevin Hane John Tucker, Scientist Head Bubble Reactor Yi Jian Huang Steve Nunnally, Principal Lab William L. Garrard Daniel Joseph & Gordon Beavers Qi Pan Machinist Neelesh Patankar Associate Head Research Associates Administrative Staff Theodore A. Wilson Antonio Fortes Kristal Belisle, Director of Undergraduate Studies Yadong Huang Senior Secretary Thomas W. Shield Leonard Imas Dan Hegland, Thomas Posbergh Principal Accountant Director of Graduate Studies Ram Rao Randi Quanbeck, Theodore A. Wilson Steven Ray Associate Program Director, Michael Wright MN Space Grant Consortium

Department of Aerospace Engineering & Mechanics 30 University of Minnesota Department of Aerospace Engineering & Mechanics 31 University of Minnesota THE AEM UPDATE 1998-99 1998-99 The AEM Update

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