DOCSLIB.ORG

The Largest Event for Aerospace Research, Development, and Technology

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

5–9 JANUARY 2015 KISSIMMEE, FL The Largest Event for Aerospace Research, Development, and Technology FINAL PROGRAM www.aiaa-SciTech.org #aiaaSciTech 14-339 WHAT’S IMPOSSIBLE TODAY WON’T BE TOMORROW. AT LOCKHEED MARTIN, WE’RE ENGINEERING A BETTER TOMORROW. We are partnering with our customers to accelerate manufacturing innovation from the laboratory to production. We push the limits in additive manufacturing, advanced materials, digital manufacturing and next generation electronics. Whether it is solving a global crisis like the need for clean drinking water or travelling even deeper into space, advanced manufacturing is opening the doors to the next great human revolution. Learn more at lockheedmartin.com © 2014 LOCKHEED MARTIN CORPORATION VC377_164 Executive Steering Committee AIAA SciTech 2015 Welcome We are excited to welcome you to the AIAA Science and Technology Forum and Exposition 2015 — the largest event for aerospace research, development, and technology in the world. We are confident that you will be informed, inspired, and motivated, as you take part in shaping the future of aerospace! Robert Braun Rich Christiansen Georgia Institute of Sierra Lobo, Inc. Over the coming days you will have the opportunity to hear from thought leaders in Technology our community, learn about the latest technical breakthroughs, collaborate with an unparalleled group of peers, and gain knowledge and insight with each session and event that you attend. Our organizing committee has worked hard to ensure that our plenary sessions will examine the most critical issues in aerospace today: investment trends and strategies for science and technology policy and R&D; how globalization will impact the aerospace economy; the future of aerospace design; climate change and the use of big data to gain a better understanding of Earth’s climate cycles; and how best to John Evans George Lesieutre construct the future workforce. Lockheed Martin The Pennsylvania Corporation State University As always, our panel discussions will build on the themes and discussions of each day’s opening plenary session, adding a layer of content and context that will enhance the value of your forum experience. These discussions will also give you time to interact with industry leaders in more intimate settings, enabling meaningful communication, and stimulating greater insight into the critical issues of the day. We also have built a premier technical program that is second to none in terms of the scope, breadth, and depth of the cutting-edge aerospace research being presented— material that you will be unable to find anywhere else. We thank the Technical Tom Shih James Shields Program Committee for working so hard to assemble this program. Purdue University Draper Laboratory AIAA SciTech 2015 will energize, enlighten, and illuminate your continuing efforts to advance the state of the art in aerospace engineering, science, and technology development. The forum will launch what we know will be an amazing year of discovery and innovation, and we are happy that you made the choice to be here with us this week to take part in this most important gathering. John Tracy The Boeing Company AIAA SciTech 2015 is proud to feature the following conferences: 23rd AIAA/AHS Adaptive 17th AIAA Non-Deterministic Structures Conference Approaches Conference 53rd AIAA Aerospace Sciences Meeting 8th Symposium on Space Resource Utilization AIAA Atmospheric Flight Mechanics Conference 2nd AIAA Spacecraft Structures Conference AIAA Infotech @ Aerospace 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference AIAA Guidance, Navigation, and Control Conference 33rd Wind Energy Symposium AIAA Modeling and Simulation Technologies Conference www.aiaa-SciTech.org 3 #aiaaSciTech IntroOrganizing Committee SciTech 2015 Forum General Chair Applied Aerodynamics Non-Deterministic Approaches George Lesieutre, The Pennsylvania State Doug Lacy, The Boeing Company Markus P. Rumpfkeil, University of Dayton University Atmospheric Flight Mechanics Plasmadynamics and Lasers Forum 360 Chair Francis Priolo, Millenium Engineering Joseph Wang, University of Southern Edward Kraft, Air Force Test Center, Arnold California Air Force Base Communications Systems Jim Dragonas Dimarogonas, The MITRE Propellants and Combustion International Chair Corporation Chris Cadou, University of Maryland Jürgen Quest, European Transonic Windtunnel Computer Systems Sensor Systems Joe Collins, Naval Research Laboratory Dan Clancy, Lockheed Martin Aeronautics Membership Chair Company Luisella Giulicchi, European Space Agency Design Engineering E. Russ Althof, Raytheon Missile Systems Small Satellites Public Policy Chair Jeremy Straub, University of North Dakota John Rose, The Boeing Company Digital Avionics Jim Rankin, University of Arkansas Society and Aerospace Technology Young Professional Chair Steve Justice, Georgia Center of Innovation Fluid Dynamics for Aerospace Benjamin Marchionna, Lockheed Martin Jesse Little, University of Arizona Software Recognition Chair Gas Turbine Engines Stephen Blanchette, Software Engineering Dave Throckmorton, Northrop Grumman Jason Smith, General Electric Aviation Institute Education Chair Green Engineering Space Resources Utilization Symposium K. Ravindra (Ravi), Saint Louis University Franz-Josef Kahlen, University of Cape Town Julie Kleinhenz, NASA Glenn Research Forum Technical Chairs Center Ground Test D. Brett Ridgely, Raytheon Missile Systems Roman Paryz, NASA Langley Research Space Operations and Support John Kosmatka, University of California, San Center Shirley Tseng Diego Guidance, Navigation, and Control Spacecraft Structures Chris Tschan, The Aerospace Corporation John Reed, United Launch Alliance Jon Hinkle, ILC Dover Forum Deputy Technical Chairs High Speed Air Breathing Propulsion Structural Dynamics Brad Burchett, Rose-Hulman Institute of Ronald R. Springer, Johns Hopkins Anubhav Datta, NASA Ames Research Technology University Applied Physics Laboratory Center Richard Ruff, MathWorks History Structures William P. Barry, NASA Alex Selvarathinam, Lockheed Martin Jeanette L. Domber, Ball Aerospace & Technologies Corporation Information and Command & Control Systems Survivability Mike Sotak, Kratos Defense & Security Julian Rimoli, Georgia Institute of Technical Discipline Chairs Solutions Technology Adaptive Structures Intelligent Systems Systems Engineering David McGowan, NASA Langley Research Kevin Kochersberger, Virginia Polytechnic John Hsu, California State University, Long Center Institute and State University Beach Aeroacoustics Materials Terrestrial Energy Lysbeth S. Lieber, Honeywell Aerospace John Matlik, Rolls-Royce Ryo Amano, University of Wisconsin– Milwaukee Aerodynamic Measurement Technology Meshing, Visualization, and Computational Philippe (Phil) Lavoie, University of Toronto Environments Thermophysics Alina Alexeenko, Purdue University Air Breathing Propulsion Systems Integration Hugh Thornburg, High Technology Services Group, Engility Corporation Charles Gaharan, Lockheed Martin Unmanned Systems Aeronautics Modeling and Simulation Technologies Richard Stansbury, Embry-Riddle Aeronautical University Aircraft Design Dan Keating, Draper Labs Gil Crouse, Sierra Nevada Corporation Multi-Disciplinary Design Optimization Wind Energy Symposium Timothy Takahashi, Arizona State University D. Todd Griffith, Sandia National Laboratories www.aiaa-SciTech.org 4 #aiaaSciTech IntroContents Welcome 3 Organizing Committee 4 Contents 5 Forum Overview 7 Sponsors and Supporters 10 Keynote Speakers and Plenary Sessions 11 www.twitter.com/aiaa Forum 360 12 www.facebook.com/AIAAfan Special Sessions and Events 15 www.youtube.com/AIAATV Educational Events 16 www.linkedin.com/companies/aiaa Networking Events 17 www.flickr.com/aiaaevents Recognition Events 18 www.google.com/+aiaaorg Exposition Hall 21 new.livestream.com/AIAAVideo/SciTech2015 Exhibitors 24 General Information 32 Join the conversation! #aiaaSciTech Author and Session Chair Information 34 Committee Meetings and Events 35 On-Site Wi Fi Information Network Name: AIAA2015 Sessions at a Glance 41 Password: scitech2015 Session Detail Matrix 54 Author and Session Chair Index 175 AIAA is the world’s largest technical society dedicated to the global aerospace profession. With more than 35,000 individual members worldwide, and one hundred Venue Information 193 corporate members, AIAA brings together industry, academia, and government to advance engineering and science in aviation, space, and defense. Venue Map 194 www.aiaa.org www.aiaa-SciTech.org 5 #aiaaSciTech Get Your Conference Info on the Go! Download the FREE AIAA 2015 Conference Mobile App MY ITINERARY FROM SCHOLARONE Compatible with iPhone/iPad, Android, and BlackBerry! FEATURES HOW TO DOWNLOAD Browse Program Any version can be run without an active Internet connection! You can also sync an itinerary you created online with the app by entering your unique itinerary name. View the program at your fingertips MyItinerary Mobile App MyItinerary Web App My Itinerary For optimal use, we recommend • For optimal use, we recommend: iPhone 3GS, iPod Touch (3rd generation), s iPhone 3GS, iPod touch (3rd Create your own conference iPad iOS 4.0, or later schedule generation+), iPad iOS 4.0 or later Download the MyItinerary app by s Most mobile devices using Android searching for “ScholarOne” in the App Conference Info 2.2 or later with the default browser Store directly from your mobile device. Or, Including special events access the link below or scan the QR code s BlackBerry
Recommended publications
  • First Level Design and System Design of Janus Liquid Oxygen-Liquid Methane Lander Jahir Fernandez University of Texas at El Paso, J F2112@Hotmail.Com

    First Level Design and System Design of Janus Liquid Oxygen-Liquid Methane Lander Jahir Fernandez University of Texas at El Paso, J [email protected]

    University of Texas at El Paso DigitalCommons@UTEP Open Access Theses & Dissertations 2017-01-01 First Level Design And System Design Of Janus Liquid Oxygen-Liquid Methane Lander Jahir Fernandez University of Texas at El Paso, [email protected] Follow this and additional works at: https://digitalcommons.utep.edu/open_etd Part of the Mechanical Engineering Commons Recommended Citation Fernandez, Jahir, "First Level Design And System Design Of Janus Liquid Oxygen-Liquid Methane Lander" (2017). Open Access Theses & Dissertations. 444. https://digitalcommons.utep.edu/open_etd/444 This is brought to you for free and open access by DigitalCommons@UTEP. It has been accepted for inclusion in Open Access Theses & Dissertations by an authorized administrator of DigitalCommons@UTEP. For more information, please contact [email protected]. FIRST LEVEL DESIGN AND SYSTEM DESIGN OF JANUS LIQUID OXYGEN-LIQUID METHANE LANDER JAHIR FERNANDEZ Master’s Program in Mechanical Engineering APPROVED: Ahsan Choudhuri, Ph.D., Chair John F. Chessa, Ph.D., Co-chair Luis Rene Contreras, Ph.D. Charles H. Ambler, Ph.D. Dean of the Graduate School Copyright © By Jahir Fernandez 2017 FIRST LEVEL DESIGN AND SYSTEM DESIGN OF JANUS LIQUID OXYGEN-LIQUID METHANE LANDER By JAHIR FERNANDEZ, B.S. MECHANICAL ENGINEERIN THESIS Presented to the Faculty of the Graduate School of The University of Texas at El Paso in Partial Fulfillment of the Requirements for the Degree of MASTER OF SCIENCE Department of Mechanical Engineering THE UNIVERSITY OF TEXAS AT EL PASO December 2017 Acknowledgements I would like to thank Dr. Ahsan Choudhuri for the opportunity to work at the cSETR. It has been an amazing experience working at the center, where the research has opened many doors for me and through which I was able to intern with NASA at Marshall Space Flight Center.
  • Considerations and Simulations About Pulse Detonation Engine

    Considerations and Simulations About Pulse Detonation Engine

    MATEC Web of Conferences 290, 04009 (2019) https://doi.org/10.1051/matecconf /2019290 04009 MSE 2019 Considerations and simulations about Pulse Detonation Engine Vasile Prisacariu1,*, Constantin Rotaru1, and Mihai Leonida Niculescu2 1Henri Coandă Air Force Academy, Aviation Department, Brașov, Romania 2INCAS, Aerodynamic Department, București, Romania Abstract. PDE propulsion can work from a subsonic regime to hypersonic regimes; this type of engine can have higher thermodynamic efficiency compared to other turbojet or turbofan engines due to the removal of rotating construction elements (compressors and turbines) that can reduce the mass and total cost of propulsion system. The PDE experimental researches focused on both the geometric configuration and the thermo- gas-dynamic flow aspects to prevent uncontrolled self-ignition. This article presents a series of numerical simulations on the functioning of PDE with hydrogen at supersonic regimens. Acronyms and symbols PDE pulse detonation engine AB PDE after burner pulse detonation engine DDT deflagration-to-detonation transition PDRE pulse detonation rocket engine ZDN Zel'dovich-von Neumann-Doering Mx, My Mach numbers p pressure v volume T temperature ρ density u1, u2 velocity h1, h2 enthalpy s1, s2 (S) entropy Vo,V∞ speed 1 INTRODUCTION Detonation is an effective means of burning a fuel mixture and transforming chemical energy into mechanical energy. However, this concept of running the propulsion systems involves difficulties both in rapidly achieving the fuel mixture at high speeds and in initiating and sustaining detonation in a controlled manner. PDE differs from conventional propulsion systems in two main aspects: it generates an intermittent pulse and produces high pressure increase in the combustion chamber, which also represents a major advantage of a PDE, see Figure 1.

  • Oświadczenia Majątkowe Sędziów 2019

    OŚWIADCZENIA MAJĄTKOWE SĘDZIÓW 2019 Oświadczenia majątkowe sędziów apelacji poznańskiej za 2019 zgodnie z porządkiem alfabetycznym 1. Adamczak Maciej 381. Łuczak Antoni 2. Adamczewska Agata 382. Łukaszewska-Niewrzęda Marzena 3. Adamczuk Andrzej 383. Łukomska-Kurek Katarzyna 4. Adamczyk Daniel 384. Łysa Sylwia 5. Adamiec Magdalena 385. Łysakowski Grzegorz 6. Adamska Beata 386. Macholak Robert 7. Agaciński Rafał 387. Maciejewska-Papież Dorota 8. Agaciński Maciej 388. Macur Daniel 9. Aleksandrowicz Małgorzata 389. Macur Anna 10. Aleksandrowicz Marek 390. Maćkowski Marcin 11. Andrzejak-Kruk Joanna 391. Madajczak Grzegorz 12. Andrzejczak Justyna 392. Maj Dariusz 13. Andrzejewski Jerzy 393. Majchrzak Piotr 14. Antecka Maria 394. Majer Roman 15. Antkowiak Leszek 395. Majewska Elżbieta 16. Antkowiak Kamil 396. Major Mirosław 17. Antoszewski Jacek 397. Makuch Jakub 18. Augustynowicz Beata 398. Malcher Andrzej 19. Augustynowicz Rafał 399. Malicki Tomasz 20. Bagiński Piotr 400. Małasiak Monika 21. Banach Stanisław 401. Małecka Małgorzata 22. Baraniak Bożena 402. Małecki Ryszard 23. Baranowska Alicja 403. Małecki Dariusz 24. Barczyk Magdalena 404. Małłek-Napierała Justyna 25. Barecka Natalia 405. Mamet Joanna 26. Barquilla-Kruczyńska Anna 406. Mańczak Justyna 27. Bartela Edmund 407. Marchwiak Krystian 28. Bartkowiak Hanna 408. Marchwicki Ryszard 29. Bartlitz Agnieszka 409. Marciniak Piotr 30. Bartłomiejczak Magdalena 410. Marciniak Renata 31. Bartniak Jan 411. Marczewski Jarosław 32. Bartosiewicz Adrian 412. Marek Agnieszka 33. Bartoszek Mateusz 413. Markowicz Ewa 34. Basińska-Skokowska Justyna 414. Markowicz Andrzej 35. Baszak Jerzy 415. Marszałek Agata 36. Bąk Waldemar 416. Maślanka Ewa 37. Bąk-Machowiak Sylwia 417. Mataczyńska Joanna 38. Bebejewski Tomasz 418. Matusiewicz Małgorzata 39. Begier Anna 419. Matuszak Anna 40. Belamri Katarzyna 420.
  • ORGANIC GEOCHEMISTRY: CHALLENGES for the 21St CENTURY

    ORGANIC GEOCHEMISTRY: CHALLENGES for the 21St CENTURY

    ORGANIC GEOCHEMISTRY: CHALLENGES FOR THE 21st CENTURY VOL. 2 Book of Abstracts of the Communications presented to the 22nd International Meeting on Organic Geochemistry Seville – Spain. September 12 -16, 2005 Editors: F.J. González-Vila, J.A. González-Pérez and G. Almendros Equipo de trabajo: Rocío González Vázquez Antonio Terán Rodíguez José Mª de la Rosa Arranz Maquetación: Rocío González Vázquez Fotomecánica e impresión: Akron Gráfica, Sevilla © 22nd IMOG, Sevilla 2005 Depósito legal: SE-61181-2005 I.S.B.N.: 84-689-3661-8 COMMITTEES INVOLVED IN THE ORGANIZATION OF THE 22 IMOG 2005 Chairman: Francisco J. GONZÁLEZ-VILA Vice-Chairman: José A. GONZÁLEZ-PÉREZ Consejo Superior de Investigaciones Científicas (CSIC) Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS) Scientific Committee Francisco J. GONZÁLEZ-VILA (Chairman) IRNAS-CSIC, Spain Gonzalo ALMENDROS Claude LARGEAU CCMA-CSIC, Spain ENSC, France Pim van BERGEN José C. del RÍO SHELL Global Solutions, The Netherlands IRNAS-CSIC, Spain Jørgen A. BOJESEN-KOEFOED Jürgen RULLKÖTTER GEUS, Denmark ICBM, Germany Chris CORNFORD Stefan SCHOUTEN IGI, UK NIOZ, The Netherlands Gary ISAKSEN Eugenio VAZ dos SANTOS NETO EXXONMOBIL, USA PETROBRAS RD, Brazil Local Committee José Ramón de ANDRÉS IGME, Spain Mª Carmen DORRONSORO Mª Enriqueta ARIAS Universidad del País Vasco Universidad de Alcalá Antonio GUERRERO Tomasz BOSKI Universidad de Sevilla Universidad do Algarve, Faro, Portugal Juan LLAMAS Ignacio BRISSON ETSI Minas de Madrid Repsol YPF Albert PERMANYER Juan COTA Universidad de Barcelona Universidad de Sevilla EAOG Board Richard L. PATIENCE (Chairman) Sylvie DERENNE (Secretary) Ger W. van GRAAS (Treasurer) Walter MICHAELIS (Awards) Francisco J. GONZALEZ-VILA (Newsletter) C.
  • CNC/IUGG: 2019 Quadrennial Report

    CNC/IUGG: 2019 Quadrennial Report

    CNC/IUGG: 2019 Quadrennial Report Geodesy and Geophysics in Canada 2015-2019 Quadrennial Report of the Canadian National Committee for the International Union of Geodesy and Geophysics Prepared on the Occasion of the 27th General Assembly of the IUGG Montreal, Canada July 2019 INTRODUCTION This report summarizes the research carried out in Canada in the fields of geodesy and geophysics during the quadrennial 2015-2019. It was prepared under the direction of the Canadian National Committee for the International Union of Geodesy and Geophysics (CNC/IUGG). The CNC/IUGG is administered by the Canadian Geophysical Union, in consultation with the Canadian Meteorological and Oceanographic Society and other Canadian scientific organizations, including the Canadian Association of Physicists, the Geological Association of Canada, and the Canadian Institute of Geomatics. The IUGG adhering organization for Canada is the National Research Council of Canada. Among other duties, the CNC/IUGG is responsible for: • collecting and reconciling the many views of the constituent Canadian scientific community on relevant issues • identifying, representing, and promoting the capabilities and distinctive competence of the community on the international stage • enhancing the depth and breadth of the participation of the community in the activities and events of the IUGG and related organizations • establishing the mechanisms for communicating to the community the views of the IUGG and information about the activities of the IUGG. The aim of this report is to communicate to both the Canadian and international scientific communities the research areas and research progress that has been achieved in geodesy and geophysics over the last four years. The main body of this report is divided into eight sections: one for each of the eight major scientific disciplines as represented by the eight sister societies of the IUGG.
  • UNITED STATES DISTRICT COURT NORTHERN DISTRICT of INDIANA SOUTH BEND DIVISION in Re FEDEX GROUND PACKAGE SYSTEM, INC., EMPLOYMEN

    UNITED STATES DISTRICT COURT NORTHERN DISTRICT of INDIANA SOUTH BEND DIVISION in Re FEDEX GROUND PACKAGE SYSTEM, INC., EMPLOYMEN

    USDC IN/ND case 3:05-md-00527-RLM-MGG document 3279 filed 03/22/19 page 1 of 354 UNITED STATES DISTRICT COURT NORTHERN DISTRICT OF INDIANA SOUTH BEND DIVISION ) Case No. 3:05-MD-527 RLM In re FEDEX GROUND PACKAGE ) (MDL 1700) SYSTEM, INC., EMPLOYMENT ) PRACTICES LITIGATION ) ) ) THIS DOCUMENT RELATES TO: ) ) Carlene Craig, et. al. v. FedEx Case No. 3:05-cv-530 RLM ) Ground Package Systems, Inc., ) ) PROPOSED FINAL APPROVAL ORDER This matter came before the Court for hearing on March 11, 2019, to consider final approval of the proposed ERISA Class Action Settlement reached by and between Plaintiffs Leo Rittenhouse, Jeff Bramlage, Lawrence Liable, Kent Whistler, Mike Moore, Keith Berry, Matthew Cook, Heidi Law, Sylvia O’Brien, Neal Bergkamp, and Dominic Lupo1 (collectively, “the Named Plaintiffs”), on behalf of themselves and the Certified Class, and Defendant FedEx Ground Package System, Inc. (“FXG”) (collectively, “the Parties”), the terms of which Settlement are set forth in the Class Action Settlement Agreement (the “Settlement Agreement”) attached as Exhibit A to the Joint Declaration of Co-Lead Counsel in support of Preliminary Approval of the Kansas Class Action 1 Carlene Craig withdrew as a Named Plaintiff on November 29, 2006. See MDL Doc. No. 409. Named Plaintiffs Ronald Perry and Alan Pacheco are not movants for final approval and filed an objection [MDL Doc. Nos. 3251/3261]. USDC IN/ND case 3:05-md-00527-RLM-MGG document 3279 filed 03/22/19 page 2 of 354 Settlement [MDL Doc. No. 3154-1]. Also before the Court is ERISA Plaintiffs’ Unopposed Motion for Attorney’s Fees and for Payment of Service Awards to the Named Plaintiffs, filed with the Court on October 19, 2018 [MDL Doc.
  • Study and Numerical Simulation of Unconventional Engine Technology

    Study and Numerical Simulation of Unconventional Engine Technology

    STUDY AND NUMERICAL SIMULATION OF UNCONVENTIONAL ENGINE TECHNOLOGY by ANJALI SHEKHAR B.E Aeronautical Engineering VTU, Karnataka, 2013 A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, Aerospace Engineering, College of Engineering and Applied Science, University of Cincinnati, Ohio 2018 Thesis Committee: Chair: Ephraim Gutmark, Ph.D. Member: Shaaban Abdallah, Ph.D. Member: Mark Turner, Sc.D. An Abstract of Study and Numerical Simulation of Unconventional Engine Technology by Anjali Shekhar Submitted to the Graduate Faculty as partial fulfillment of the requirements for the Master of Science Degree in Aerospace Engineering University of Cincinnati December 2018 The aim of this thesis is to understand the working of two unconventional aircraft propul- sion systems and to setup a two-dimensional transient simulation to analyze its operational mechanism. The air traffic has nearly increased by about 40% in past three decades and calls for alternative propulsion techniques to replace or support the current traditional propulsion methodology. In the light of current demand, the thesis draws motivation from renewed inter- est in two non-conventional propulsion techniques designed in the past and had not been given due importance due to various flaws/drawbacks associated. The thesis emphasizes on the work- ing of Von Ohains thermal compression engine and pulsejet combustors. Computational Fluid Dynamics is used in current study as it offers very high flexibility and can be modified easily to incorporate the required changes. Thermal Compression engine is a design suggested by Von Ohain in 1948. The engine works on the principle of pressure rise caused inside the engine which completely depends on the temperature of working fluid and independent of rotations per minute.
  • Astrophysics in 2002

    Astrophysics in 2002

    UC Irvine UC Irvine Previously Published Works Title Astrophysics in 2002 Permalink https://escholarship.org/uc/item/8rz4m3tt Journal Publications of the Astronomical Society of the Pacific, 115(807) ISSN 0004-6280 Authors Trimble, V Aschwanden, MJ Publication Date 2003 DOI 10.1086/374651 License https://creativecommons.org/licenses/by/4.0/ 4.0 Peer reviewed eScholarship.org Powered by the California Digital Library University of California Publications of the Astronomical Society of the Pacific, 115:514–591, 2003 May ᭧ 2003. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A. Invited Review Astrophysics in 2002 Virginia Trimble Department of Physics and Astronomy, University of California, Irvine, CA 92697; and Astronomy Department, University of Maryland, College Park, MD 20742; [email protected] and Markus J. Aschwanden Lockheed Martin Advanced Technology Center, Solar and Astrophysics Laboratory, Department L9-41, Building 252, 3251 Hanover Street, Palo Alto, CA 94304; [email protected] Received 2003 January 29; accepted 2003 January 29 ABSTRACT. This has been the Year of the Baryon. Some low temperature ones were seen at high redshift, some high temperature ones were seen at low redshift, and some cooling ones were (probably) reheated. Astronomers saw the back of the Sun (which is also made of baryons), a possible solution to the problem of ejection of material by Type II supernovae (in which neutrinos push out baryons), the production of R Coronae Borealis stars (previously-owned baryons), and perhaps found the missing satellite galaxies (whose failing is that they have no baryons). A few questions were left unanswered for next year, and an attempt is made to discuss these as well.
  • FAA Advisory Circular 20-97B

    FAA Advisory Circular 20-97B

    Subject: AIRCRAFT TIRE MAINTENANCE Date: 4/18/05 AC No.: 20-97B AND OPERATIONAL PRACTICES Initiated by: AFS-306 Change: 1. PURPOSE. This advisory circular (AC) provides recommended tire care and maintenance practices needed to assure the safety of support personnel and the continued airworthiness of aircraft. Specifically, this AC provides guidance on the installation, inflation, maintenance, and removal of aircraft tires. In addition, this AC provides guidance on those operational practices necessary to maintain safe aircraft operations. This AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline acceptable tire maintenance and operational practices. In lieu of following this method without deviation, operators may elect to follow an alternative method that has also been found acceptable by the Federal Aviation Administration (FAA). 2. CANCELLATION. AC 20-97A, High-Speed Tire Maintenance and Operational Practices, dated May 13, 1987, is cancelled. 3. RELATED REGULATIONS AND DOCUMENTS. a. Title 14 of the Code of Federal Regulations (14 CFR): (1) Part 21, subpart O, Technical Standard Order Authorizations. (2) Part 23, Airworthiness Standards: Normal, Utility, Acrobatic, and Commuter Category Airplanes. (3) Part 25, Airworthiness Standards: Transport Category Airplanes. (4) Part 27, Airworthiness Standards: Normal Category Rotorcraft. (5) Part 29, Airworthiness Standards: Transport Category Rotorcraft. (6) Part 43, Maintenance, Preventive Maintenance, Rebuilding, and Alteration. (7) Part 145, Repair Stations. b. FAA ACs. Copies of the following ACs may be obtained from the U.S. Department of Transportation, Subsequent Distribution Center, Ardmore East Business Center, 3341 Q 75th Avenue, Landover, MD 20785, and may be downloaded at the following Web site: http://www.faa.gov/avr/afs/acs/ac-idx.htm.
  • October 2003 SOCIETY

    October 2003 SOCIETY

    ISSN 0739-4934 NEWSLETTER HISTORY OF SCIENCE VOLUME 32 NUMBER 4 October 2003 SOCIETY those with no interest in botany, the simple beauty of the glass is enough. Natural History Delights in Cambridge From modern-life in glass to long-ago life, it’s only a short walk. The museum houses ant to discuss dinosaurs, explore microfossils of some of the Earth’s earliest life Wancient civilizations, learn wild- forms, as well as fossil fish and dinosaurs – flower gardening, or study endangered such as the second ever described Triceratops, species? If variety is the spice of life, then and the world’s only mounted Kronosaurus, a the twenty-one million specimens at the 42-foot-long prehistoric marine reptile. Harvard Museum of Natural History show a Among its 90,000 zoological specimens the museum bursting with life, much of it unnat- museum also has the pheasants once owned urally natural. by George Washington. And many of the The museum will be the site of the opening mammal collections were put together in the reception for the 2003 HSS annual meeting. 19th century by “lions” in the history of sci- The reception begins at 7 p.m. Thursday, 20 ence, like Louis Agassiz. November, and tickets will be available at the Much of the museum’s collection of rocks and meeting registration desk. Buses will run from ores is the result of field work, but the museum the host hotel to the museum. houses not only that which has been dug up, but The Harvard MNH is an ideal spot for his- also that which has fallen out of the sky.
  • 액체로켓 메탄엔진 개발동향 및 시사점 Development Trends of Liquid

    액체로켓 메탄엔진 개발동향 및 시사점 Development Trends of Liquid

    Journal of the Korean Society of Propulsion Engineers Vol. 25, No. 2, pp. 119-143, 2021 119 Technical Paper DOI: https://doi.org/10.6108/KSPE.2021.25.2.119 액체로켓 메탄엔진 개발동향 및 시사점 임병직 a, * ㆍ 김철웅 a⋅ 이금오 a ㆍ 이기주 a ㆍ 박재성 a ㆍ 안규복 b ㆍ 남궁혁준 c ㆍ 윤영빈 d Development Trends of Liquid Methane Rocket Engine and Implications Byoungjik Lim a, * ㆍ Cheulwoong Kim a⋅ Keum-Oh Lee a ㆍ Keejoo Lee a ㆍ Jaesung Park a ㆍ Kyubok Ahn b ㆍ Hyuck-Joon Namkoung c ㆍ Youngbin Yoon d a Future Launcher R&D Program Office, Korea Aerospace Research Institute, Korea b School of Mechanical Engineering, Chungbuk National University, Korea c Guided Munitions Team, Hyundai Rotem, Korea d Department of Aerospace Engineering, Seoul National University, Korea * Corresponding author. E-mail: [email protected] ABSTRACT Selecting liquid methane as fuel is a prevailing trend for recent rocket engine developments around the world, triggered by its affordability, reusability, storability for deep space exploration, and prospect for in-situ resource utilization. Given years of time required for acquiring a new rocket engine, a national-level R&D program to develop a methane engine is highly desirable at the earliest opportunity in order to catch up with this worldwide trend towards reusing launch vehicles for competitiveness and mission flexibility. In light of the monumental cost associated with development, fabrication, and testing of a booster stage engine, it is strategically a prudent choice to start with a low-thrust engine and build up space application cases.
  • Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed

    Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed

    International Journal of Aviation, Aeronautics, and Aerospace Volume 2 Issue 1 Article 2 3-2-2015 Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed Abdurrhman A. Alroqi University of Sussex, [email protected] Weiji Wang University of Sussex, [email protected] Follow this and additional works at: https://commons.erau.edu/ijaaa Part of the Aeronautical Vehicles Commons Scholarly Commons Citation Alroqi, A. A., & Wang, W. (2015). Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed. International Journal of Aviation, Aeronautics, and Aerospace, 2(1). https://doi.org/10.15394/ ijaaa.2015.1043 This Article is brought to you for free and open access by the Journals at Scholarly Commons. It has been accepted for inclusion in International Journal of Aviation, Aeronautics, and Aerospace by an authorized administrator of Scholarly Commons. For more information, please contact [email protected]. Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed Cover Page Footnote The authors would like to acknowledge University of Sussex for its support with the literature and related resources. This article is available in International Journal of Aviation, Aeronautics, and Aerospace: https://commons.erau.edu/ ijaaa/vol2/iss1/2 Alroqi and Wang: Comparison of Aircraft Tire Wear with Initial Wheel Rotational Speed In this paper, the landing impact of an aircraft is described using a physical model of a single wheel in the main landing gear. The purpose of this study is to understand potential tire-life improvements that could be made by reducing abrasive skidding between aircraft tires and runway surfaces immediately after touchdown.