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Wind Tunnel Analysis and Flight Test of a Wing Fence on a T-38
Air Force Institute of Technology AFIT Scholar Theses and Dissertations Student Graduate Works 3-6-2009 Wind Tunnel Analysis and Flight Test of a Wing Fence on a T-38 Michael D. Williams Follow this and additional works at: https://scholar.afit.edu/etd Part of the Aerodynamics and Fluid Mechanics Commons Recommended Citation Williams, Michael D., "Wind Tunnel Analysis and Flight Test of a Wing Fence on a T-38" (2009). Theses and Dissertations. 2407. https://scholar.afit.edu/etd/2407 This Thesis is brought to you for free and open access by the Student Graduate Works at AFIT Scholar. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of AFIT Scholar. For more information, please contact [email protected]. WIND TUNNEL ANALYSIS AND FLIGHT TEST OF A WING FENCE ON A T-38 THESIS Michael D. Williams, Major, USAF AFIT/GAE/ENY/09-M20 DEPARTMENT OF THE AIR FORCE AIR UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright-Patterson Air Force Base, Ohio APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED The views expressed in this thesis are those of the author and do not reflect the official policy or position of the United States Air Force, Department of Defense, or the United States Government. AFIT/GAE/ENY/09-M20 WIND TUNNEL ANALYSIS AND FLIGHT TEST OF A WING FENCE ON A T-38 THESIS Presented to the Faculty Department of Aeronautical and Astronautical Engineering Graduate School of Engineering and Management Air Force Institute of Technology Air University Air Education and Training Command In Partial Fulfillment of the Requirements for the Degree of Master of Science in Aeronautical Engineering Michael D. -
Enhancing General Aviation Aircraft Safety with Supplemental Angle of Attack Systems
University of North Dakota UND Scholarly Commons Theses and Dissertations Theses, Dissertations, and Senior Projects January 2015 Enhancing General Aviation Aircraft aS fety With Supplemental Angle Of Attack Systems David E. Kugler Follow this and additional works at: https://commons.und.edu/theses Recommended Citation Kugler, David E., "Enhancing General Aviation Aircraft aS fety With Supplemental Angle Of Attack Systems" (2015). Theses and Dissertations. 1793. https://commons.und.edu/theses/1793 This Dissertation is brought to you for free and open access by the Theses, Dissertations, and Senior Projects at UND Scholarly Commons. It has been accepted for inclusion in Theses and Dissertations by an authorized administrator of UND Scholarly Commons. For more information, please contact [email protected]. ENHANCING GENERAL AVIATION AIRCRAFT SAFETY WITH SUPPLEMENTAL ANGLE OF ATTACK SYSTEMS by David E. Kugler Bachelor of Science, United States Air Force Academy, 1983 Master of Arts, University of North Dakota, 1991 Master of Science, University of North Dakota, 2011 A Dissertation Submitted to the Graduate Faculty of the University of North Dakota in partial fulfillment of the requirements for the degree of Doctor of Philosophy Grand Forks, North Dakota May 2015 Copyright 2015 David E. Kugler ii PERMISSION Title Enhancing General Aviation Aircraft Safety With Supplemental Angle of Attack Systems Department Aviation Degree Doctor of Philosophy In presenting this dissertation in partial fulfillment of the requirements for a graduate degree from the University of North Dakota, I agree that the library of this University shall make it freely available for inspection. I further agree that permission for extensive copying for scholarly purposes may be granted by the professor who supervised my dissertation work or, in his absence, by the Chairperson of the department or the dean of the School of Graduate Studies. -
Sailing for Performance
SD2706 Sailing for Performance Objective: Learn to calculate the performance of sailing boats Today: Sailplan aerodynamics Recap User input: Rig dimensions ‣ P,E,J,I,LPG,BAD Hull offset file Lines Processing Program, LPP: ‣ Example.bri LPP_for_VPP.m rigdata Hydrostatic calculations Loading condition ‣ GZdata,V,LOA,BMAX,KG,LCB, hulldata ‣ WK,LCG LCF,AWP,BWL,TC,CM,D,CP,LW, T,LCBfpp,LCFfpp Keel geometry ‣ TK,C Solve equilibrium State variables: Environmental variables: solve_Netwon.m iterative ‣ VS,HEEL ‣ TWS,TWA ‣ 2-dim Netwon-Raphson iterative method Hydrodynamics Aerodynamics calc_hydro.m calc_aero.m VS,HEEL dF,dM Canoe body viscous drag Lift ‣ RFC ‣ CL Residuals Viscous drag Residuary drag calc_residuals_Newton.m ‣ RR + dRRH ‣ CD ‣ dF = FAX + FHX (FORCE) Keel fin drag ‣ dM = MH + MR (MOMENT) Induced drag ‣ RF ‣ CDi Centre of effort Centre of effort ‣ CEH ‣ CEA FH,CEH FA,CEA The rig As we see it Sail plan ≈ Mainsail + Jib (or genoa) + Spinnaker The sail plan is defined by: IMSYC-66 P Mainsail hoist [m] P E Boom leech length [m] BAD Boom above deck [m] I I Height of fore triangle [m] J Base of fore triangle [m] LPG Perpendicular of jib [m] CEA CEA Centre of effort [m] R Reef factor [-] J E LPG BAD D Sailplan modelling What is the purpose of the sails on our yacht? To maximize boat speed on a given course in a given wind strength ‣ Max driving force, within our available righting moment Since: We seek: Fx (Thrust vs Resistance) ‣ Driving force, FAx Fy (Side forces, Sails vs. Keel) ‣ Heeling force, FAy (Mx (Heeling-righting moment)) ‣ Heeling arm, CAE Aerodynamics of sails A sail is: ‣ a foil with very small thickness and large camber, ‣ with flexible geometry, ‣ usually operating together with another sail ‣ and operating at a large variety of angles of attack ‣ Environment L D V Each vertical section is a differently cambered thin foil Aerodynamics of sails TWIST due to e.g. -
CANARD.WING LIFT INTERFERENCE RELATED to MANEUVERING AIRCRAFT at SUBSONIC SPEEDS by Blair B
https://ntrs.nasa.gov/search.jsp?R=19740003706 2020-03-23T12:22:11+00:00Z NASA TECHNICAL NASA TM X-2897 MEMORANDUM CO CN| I X CANARD.WING LIFT INTERFERENCE RELATED TO MANEUVERING AIRCRAFT AT SUBSONIC SPEEDS by Blair B. Gloss and Linwood W. McKmney Langley Research Center Hampton, Va. 23665 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION • WASHINGTON, D. C. • DECEMBER 1973 1.. Report No. 2. Government Accession No. 3. Recipient's Catalog No. NASA TM X-2897 4. Title and Subtitle 5. Report Date CANARD-WING LIFT INTERFERENCE RELATED TO December 1973 MANEUVERING AIRCRAFT AT SUBSONIC SPEEDS 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. L-9096 Blair B. Gloss and Linwood W. McKinney 10. Work Unit No. 9. Performing Organization Name and Address • 760-67-01-01 NASA Langley Research Center 11. Contract or Grant No. Hampton, Va. 23665 13. Type of Report and Period Covered 12. Sponsoring Agency Name and Address Technical Memorandum National Aeronautics and Space Administration 14. Sponsoring Agency Code Washington , D . C . 20546 15. Supplementary Notes 16. Abstract An investigation was conducted at Mach numbers of 0.7 and 0.9 to determine the lift interference effect of canard location on wing planforms typical of maneuvering fighter con- figurations. The canard had an exposed area of 16.0 percent of the wing reference area and was located in the plane of the wing or in a position 18.5 percent of the wing mean geometric chord above the wing plane. In addition, the canard could be located at two longitudinal stations. -
Aerodynamic Characteristics of Naca 0012 Airfoil Section at Different Angles of Attack
AERODYNAMIC CHARACTERISTICS OF NACA 0012 AIRFOIL SECTION AT DIFFERENT ANGLES OF ATTACK SUPREETH NARASIMHAMURTHY GRADUATE STUDENT 1327291 Table of Contents 1) Introduction………………………………………………………………………………………………………………………………………...1 2) Methodology……………………………………………………………………………………………………………………………………….3 3) Results……………………………………………………………………………………………………………………………………………......5 4) Conclusion …………………………………………………………………………………………………………………………………………..9 5) References…………………………………………………………………………………………………………………………………………10 List of Figures Figure 1: Basic nomenclature of an airfoil………………………………………………………………………………………………...1 Figure 2: Computational domain………………………………………………………………………………………………………………4 Figure 3: Static Pressure Contours for different angles of attack……………………………………………………………..5 Figure 4: Velocity Magnitude Contours for different angles of attack………………………………………………………………………7 Fig 5: Variation of Cl and Cd with alpha……………………………………………………………………………………………………8 Figure 6: Lift Coefficient and Drag Coefficient Ratio for Re = 50000…………………………………………………………8 List of Tables Table 1: Lift and Drag coefficients as calculated from lift and drag forces from formulae given above……7 Introduction It is a fact of common experience that a body in motion through a fluid experience a resultant force which, in most cases is mainly a resistance to the motion. A class of body exists, However for which the component of the resultant force normal to the direction to the motion is many time greater than the component resisting the motion, and the possibility of the flight of an airplane depends on the use of the body of this class for wing structure. Airfoil is such an aerodynamic shape that when it moves through air, the air is split and passes above and below the wing. The wing’s upper surface is shaped so the air rushing over the top speeds up and stretches out. This decreases the air pressure above the wing. The air flowing below the wing moves in a comparatively straighter line, so its speed and air pressure remain the same. -
Aerodynamics of High-Performance Wing Sails
Aerodynamics of High-Performance Wing Sails J. otto Scherer^ Some of tfie primary requirements for tiie design of wing sails are discussed. In particular, ttie requirements for maximizing thrust when sailing to windward and tacking downwind are presented. The results of water channel tests on six sail section shapes are also presented. These test results Include the data for the double-slotted flapped wing sail designed by David Hubbard for A. F. Dl Mauro's lYRU "C" class catamaran Patient Lady II. Introduction The propulsion system is probably the single most neglect ed area of yacht design. The conventional triangular "soft" sails, while simple, practical, and traditional, are a long way from being aerodynamically desirable. The aerodynamic driving force of the sails is, of course, just as large and just as important as the hydrodynamic resistance of the hull. Yet, designers will go to great lengths to fair hull lines and tank test hull shapes, while simply drawing a triangle on the plans to define the sails. There is no question in my mind that the application of the wealth of available airfoil technology will yield enormous gains in yacht performance when applied to sail design. Re cent years have seen the application of some of this technolo gy in the form of wing sails on the lYRU "C" class catamar ans. In this paper, I will review some of the aerodynamic re quirements of yacht sails which have led to the development of the wing sails. For purposes of discussion, we can divide sail require ments into three points of sailing: • Upwind and close reaching. -
Selected Structural Elements of the Wing to Increase the Lift Force
I efektywność transportu Ernest Gnapowski Selected structural elements of the wing to increase the lift force JEL: L93 DOI: 10.24136/atest.2018.494 Data zgłoszenia: 19.11.2018 Data akceptacji: 15.12.2018 The article presents a currently used structural elements to increase the lift force. Presented mechanical and no-mechanical construction elements that increase the lifting force. The author's attention to the new direction of flow control using a DBD plasma actuator. This is a new direction of active flow control. Słowa kluczowe: aerodynamic, high-lift device, plasma actuator DBD Introduction One of the many causes of accidents and disasters in aviation is Fig. 1. The most common airline profiles; a) symmetrical, b) semi- a loss of lift force during flight, most often caused by flow disturb- symmetrical, c) flat bottomed, d) under-cambered ances around a wing profile. This is especially true when starting or landing, the wing operates in the limiting angles of attack. There Even a properly selected wing profile in certain conditions (at may be a stall and catastrophic disturbance of the flight path. high angles of attack) loses the lift force. To counteract this, con- Wing profiles have a specific geometry that determines the use struction offices introduce elements that improve the flow laminarity of a particular profile in aircraft constructions. The parameters which and improve safety. influence the choice of the design of the profile are; speed of flight, wing loading, purpose aircraft. Each airfoil has determined experi- Wing cuff mentally or by calculation the maximum angle of attack α and the Wing cuff is a static aerodynamic modification of the front part of minimum speed at which no loss of aerodynamic lift. -
Vertical Motion Simulator Experiment on Stall Recovery Guidance
NASA/TP{2017{219733 Vertical Motion Simulator Experiment on Stall Recovery Guidance Stefan Schuet National Aeronautics and Space Administration Thomas Lombaerts Stinger Ghaffarian Technologies, Inc. Vahram Stepanyan Universities Space Research Association John Kaneshige, Kimberlee Shish, Peter Robinson National Aeronautics and Space Administration Gordon Hardy Retired Research Test Pilot Science Applications International Corporation October 2017 NASA STI Program. in Profile Since its founding, NASA has been dedicated • CONFERENCE PUBLICATION. to the advancement of aeronautics and space Collected papers from scientific and science. The NASA scientific and technical technical conferences, symposia, seminars, information (STI) program plays a key part or other meetings sponsored or in helping NASA maintain this important co-sponsored by NASA. role. • SPECIAL PUBLICATION. Scientific, The NASA STI Program operates under the technical, or historical information from auspices of the Agency Chief Information NASA programs, projects, and missions, Officer. It collects, organizes, provides for often concerned with subjects having archiving, and disseminates NASA's STI. substantial public interest. The NASA STI Program provides access to the NASA Aeronautics and Space Database • TECHNICAL TRANSLATION. English- and its public interface, the NASA Technical language translations of foreign scientific Report Server, thus providing one of the and technical material pertinent to largest collection of aeronautical and space NASA's mission. science STI in the world. Results are Specialized services also include organizing published in both non-NASA channels and and publishing research results, distributing by NASA in the NASA STI Report Series, specialized research announcements and which includes the following report types: feeds, providing information desk and • TECHNICAL PUBLICATION. Reports of personal search support, and enabling data completed research or a major significant exchange services. -
The Effect of Slot Configuration on Active Flow Control Performance of Swept Wings At
The Effect of Slot Configuration on Active Flow Control Performance of Swept Wings at Low Reynolds Numbers Thesis Presented in Partial Fulfillment of the Requirements for Graduation with Honors Research Distinction in Aeronautical and Astronautical Engineering at The Ohio State University By Ali N. Hussain B.S. Program in Aeronautical and Astronautical Engineering The Ohio State University Department of Mechanical & Aerospace Engineering April 2018 Thesis Committee Dr. Jeffrey P. Bons, Advisor Dr. Clifford Whitfield, Committee Member © Copyright by Ali N. Hussain 2018 2 Abstract Active flow control (AFC) in the form of a discrete wall normal slot was investigated on a NACA 643-618 laminar wing model. The wing model has a leading-edge sweep of (Λ = 30°) and tests were performed using a chordwise Reynolds number of 100,000 with specific focus on the stall characteristics and performance of AFC while reducing energy needs. The study included comparing a segmented slot to a single continuous slot as well as the positioning of the slot itself along the chord at a spanwise location of z/b = 70%. For an Aeff/A of 0.5 (as compared to the original slot) maximum lift performance improved 9.6% for multiple slots while a single slot improved the maximum lift by 8.3% over the baseline. Surface flow visualization using tufts revealed that a single slot is much more effective at stopping spanwise flow and delaying stall to a higher angle of attack by 4°. For an Aeff/A of 0.75 (as compared to the original slot), lift performance improved 15.6% and 16.2% by covering x/c = 25% of the slot on the pressure and suction side of the airfoil, respectively. -
MT Propeller
mt-propeller Installationlist Edition Report No.: E-546 Entwicklung GMBH 01st July 2009 EMP Min Blade Max Blade Max R- Counter- Aircraft Engine Propeller Spinner Assy Governor STC Angle Angle Reverse Station Weight TC [ ° ] [ ° ] [ ° ] [ cm ] [ ° ] EASA/FAA A-150Luftschiff Lyc.IO-360 MTV-25-1-D-C-R(M)/CR165-06 P-492 P-480-1 7 22 -18 58 CWT+27 EASA A-1Husky Lyc.IO-360-A1P MTV-14-B/183-301a P-238-A P-860-4 10,5 30 68,5 A-1Husky Lyc.O-360-C1G MTV-12-B/180-17 P-208-X P-860-4 13 30 63 EASA/FAA A-1Husky Lyc.IO-360-A1P/-C1G MTV-15-B/210-58 P-277-B P-860-4 9 24 79 EASA AA-200 Lyc.IO-360-() MTV-18-B/LD178-17 P-246 P-120-U/2700-24V 14 35 63 CWT+35 FAA ACA SCOUT 8GCBC Lyc. O-360- MTV-9-B/190-18a P-282-1-A P-860-4 9 28 71 FAA ACA SCOUT 8GCBC Lyc. O-360- MTV-15-B/203-58 P-271-2-C P-860-4 9 28 76 EASA/FAA ACA Scout 9GCBC Lyc. IO-540- MTV-9-B/198-58 P-810-1 P-860-3 8,5 28 74 Accord 201 SR-305-230 MTV-9-B-C-F-R(M)/CFR198-58B P-907 P-980-() 14,5 81 -18 74 CWT+3 ACRO Lyc.AEIO-360-A1B MTV-9-B-C/C190-11 P-208 P-880-4 9,5 34 70 CWT+26 ACRO Lyc.AEIO-540-C4B5 MTV-9-B-C/C200-15 P-208 P-880-3 10,5 34 70 CWT+26 Acrobatic Aircraft Chevy V8 550 hp MTV-16-1-E-C/C250-27 P-542 9,5 36 87,5 CWT+26 ACRO-MONOPLANE Lyc.AEIO-540-L1B5D MTV-9-B-C/C200-15 P-208 P-880-3 10,5 34 70 CWT+26 ACROZENITHCH-180 Lyc.IO-360-A1B6D MTV-2-B-C/193-02 P-029 P-860-4 9,5 34 67,5 CWT+30 ACV 120PS MTE-176/RD113-23 - - 22,2 - 43 ACV BMW MTE-106/LD119-10 - - 20 - 45 ACV ROBIN EC-60-PL MTE-176/LD113-23 - - 22,2 - 43 ACV Rotax503(2:1) MTE-176/RD91-37 - - 21 - 32 AEASATROSS 4 UACL PT6A-15AG MTV-27-1-E-C-F-R(P)/CFR208-15c -
Airplane Icing
Federal Aviation Administration Airplane Icing Accidents That Shaped Our Safety Regulations Presented to: AE598 UW Aerospace Engineering Colloquium By: Don Stimson, Federal Aviation Administration Topics Icing Basics Certification Requirements Ice Protection Systems Some Icing Generalizations Notable Accidents/Resulting Safety Actions Readings – For More Information AE598 UW Aerospace Engineering Colloquium Federal Aviation 2 March 10, 2014 Administration Icing Basics How does icing occur? Cold object (airplane surface) Supercooled water drops Water drops in a liquid state below the freezing point Most often in stratiform and cumuliform clouds The airplane surface provides a place for the supercooled water drops to crystalize and form ice AE598 UW Aerospace Engineering Colloquium Federal Aviation 3 March 10, 2014 Administration Icing Basics Important Parameters Atmosphere Liquid Water Content and Size of Cloud Drop Size and Distribution Temperature Airplane Collection Efficiency Speed/Configuration/Temperature AE598 UW Aerospace Engineering Colloquium Federal Aviation 4 March 10, 2014 Administration Icing Basics Cloud Characteristics Liquid water content is generally a function of temperature and drop size The colder the cloud, the more ice crystals predominate rather than supercooled water Highest water content near 0º C; below -40º C there is negligible water content Larger drops tend to precipitate out, so liquid water content tends to be greater at smaller drop sizes The average liquid water content decreases with horizontal -
Oxygen Systems
OXYGEN SYSTEMS AEROX HIGH-DURATION AVIATION AEROX PRO-O2 EMERGENCY OXYGEN SYSTEMS HANDHELD OXYGEN SYSTEMS Add to your flying comfort by using oxygen Provides oxygen until the aircraft can reach a lower at altitudes as low as 5000 ft. Aerox Oxygen altitude. And because Pro-O2 is refillable, there is no CM Systems include lightweight aluminum cyl in- need to purchase replacement O2 cartridges. During ders, regulators, all hardware, flow meter, short flights at altitudes between 12,500ft. MSL and and nasal cannulas (masks available as 14,000ft. MSL where maneuvering over mountains or turbulent weather option). Oxysaver oxygen saving cannulas is necessary, the Pro-O2 emergency handheld oxygen system provides & Aerox Flow Control Regulators increase oxygen to extend these brief legs. Included with the refillable Pro-O2 is WP the duration of oxygen supply about 4 times, a regulator with gauge, mask and a refillable cylinder. and prevent nasal irritation and dryness. Pro-O2-2 (2 Cu. Ft./1 mask)........................P/N 13-02735 .........$328.00 Aerox 2D Aerox 4M Complete brochure available on request. Pro-O2-4 (2 Cu. Ft./2 masks) ......................P/N 13-02736 .........$360.00 system system AEROX EMT-3 PORTABLE 500 SERIES REGULATOR – AN AIRCRAFT SPRUCE EXCLUSIVE! OXYGEN SYSTEM ME A small portable system designed for the occasional user • Low profile who wants something smaller and less costly than a full • 1, 2, & 4 place portable system. The EMT-3 is also ideal for use as an • Standard Aircraft filler for easy filling emergency oxygen system. The system lasts 25 minutes at • Convenient top mounted ON/OFF valve 2.5 LPM @ 25,000 FT.