Download or read book A Wind Tunnel Captive Aircraft Testing Technique written by R. W. Butler and published by . This book was released on 1976 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A captive aircraft testing technique has been developed for use in the 16-ft wind tunnels at the Arnold Engineering Development Center (AEDC). With the captive system, an aircraft motion study may be conducted in the wind tunnel with the tunnel acting as an analog forcing function. The large static aerodynamic data matrix normally required for a motion study has been alleviated. The system validity is established by a comparison of F-15 aircraft motion generated in the wind tunnel with flight motion of a NASA 3/8-scale F-15 Remotely Piloted Vehicle (RPV). Good agreement between the longitudinal and lateral/directional motions of the model was achieved in the absence of RPV unsteady aerodynamics (wing buffet). The captive technique ability to efficiently define changes in aircraft flight characteristics resulting from different external store configurations is demonstrated. (Author).
Download or read book Captive Aircraft Testing at High Angles of Attack written by R. W. Butler and published by . This book was released on 1981 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: A captive testing technique capable of simulating aircraft maneuvers at high angles of attack has been developed and tested in the Aerodynamic Tunnel 16T of the Arnold Engineering Development Center (AEDC). The captive technique uses a closed loop system between wind tunnel, model, and computer. Use of the wind tunnel as an analog forcing function eliminates the requirement for a conventional static data matrix in motion simulation. Various high angle-of-attack maneuvers (rudder roll, aileron roll, wind-up turn, etc.) were generated with the captive system and show good correlation with flight data. (Author).
Download or read book Post Stall Testing of Aircraft with a Wind Tunnel Captive System written by J. R. Milillo and published by . This book was released on 1972 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-speed aircraft may have unsatisfactory stall characteristics and the aircraft may be lost because of the uncontrolled flight gyrations encountered in attempting to maneuver in the stalled flight regime. Results are presented of a study to determine the feasibility of using a captive technique in a wind tunnel to study aircraft post-stall characteristics and to define boundaries for maintaining controlled flight of the aircraft. The technique appears feasible but needs to be developed by conducting pilot tests in an existing facility. (Author).
Download or read book Store Separation Testing Techniques at the Arnold Engineering Development Center written by J. B. Carman (Jr.) and published by . This book was released on 1980 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the current captive trajectory support (CTS) hardware, system operation, and the captive trajectory applications program for the Aerodynamic Wind Tunnel (4T). Also included are brief descriptions of additional CTS applications and some guidelines for potential users of the system.
Download or read book Captive Aircraft Testing at High Angles of Attack written by R. W. Butler and published by . This book was released on 1981 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: A captive testing technique capable of simulating aircraft maneuvers at high angles of attack has been developed and tested in the Aerodynamic Tunnel 16T of the Arnold Engineering Development Center (AEDC). The captive technique uses a closed loop system between wind tunnel, model, and computer. Use of the wind tunnel as an analog forcing function eliminates the requirement for a conventional static data matrix in motion simulation. Various high angle-of-attack maneuvers (rudder roll, aileron roll, wind-up turn, etc.) were generated with the captive system and show good correlation with flight data. (Author).
Download or read book Evaluation of a Wind Tunnel Technique to Determine Aircraft Departure Characteristics written by R. W. Butler and published by . This book was released on 1974 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A wind tunnel pilot test was conducted to develop a captive aircraft testing technique. By utilizing wind tunnel research to determine the static aerodynamic forces and moments in conjunction with an on-line digital computer programmed with the equations of motion, a series of aircraft stall/departure type maneuvers was generated. A 1/72-scale A-7D aircraft model was utilized. All maneuvers were initiated at Mach number 0.50 at a simulated altitude of 20,000 ft. (Modified author abstract).
Download or read book Captive Aircraft Testing at High Angles of Attack written by and published by . This book was released on 1981 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A captive testing technique capable of simulating aircraft maneuvers at high angles of attack has been developed and tested in the Aerodynamic Tunnel 16T of the Arnold Engineering Development Center (AEDC). The captive technique uses a closed loop system between wind tunnel, model, and computer. Use of the wind tunnel as an analog forcing function eliminates the requirement for a conventional static data matrix in motion simulation. Various high angle-of-attack maneuvers (rudder roll, aileron roll, wind-up turn, etc.) were generated with the captive system and show good correlation with flight data. (Author).
Download or read book Comparison of Two Methods Used to Measure Aerodynamic Loads Acting on Captive Store Models in Wind Tunnel Tests written by R. E. Dix and published by . This book was released on 1976 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a series of wind tunnel tests, measurements were made of the aerodynamic loads acting on eight different store configurations supported in and near the external captive position on a 1/20-scale model of the F-4C aircraft. Store models included blunt and contoured afterbody shapes, stable and unstable configurations, and large (pylon-mounted) and small (rack-mounted) configurations. Six components of forces and moments were measured using two methods of supporting the store models: an internal bracket support technique (IBS), and a dual sting support technique. Some characteristics of the interference flow field of the aircraft were also inferred.
Download or read book Wind Tunnel Test Techniques written by Colin Britcher and published by Academic Press. This book was released on 2023-10-20 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wind Tunnel Test Techniques: Design and Use at Low and High Speeds with Statistical Engineering Applications provides an up-to-date treatment of the topic. Beginning with a brief history of wind tunnels and its types and uses, the book goes on to cover subsonic, supersonic and hypersonic wind tunnel design and construction, calibration, boundary corrections, flow quality assessment, pressure surveys, and dynamic testing. It also focuses on wind tunnel facilities, making it useful for both the designer and operator. Engineers and graduate students in aerospace, automotive and similar programs will find this book useful in their work with experimental aerodynamics, gas dynamics, facility design and performance. Deals with a broad range of flow speeds in wind tunnels, from low speed to high speed Provides a discussion of similarity laws as well as material on statistical analysis Includes coverage on facility-to-facility and facility-to-CFD correlation Presents advanced topics such as cryogenic wind tunnels, ground simulation in automotive testing, and propulsion testing
Download or read book Comparison of Wind Tunnel and Flight Test Measurements of Static Aerodynamic Loading of a Captive Store written by R. E. Dix and published by . This book was released on 1980 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introductory Guide to EC Competition Law and Practice written by Valentine Korah and published by . This book was released on 1994 with total page 2354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1976 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wind Tunnels and Testing Techniques written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1984 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Captive Trajectory System Test Planning Information for AEDC Supersonic Wind Tunnel A and Hypersonic Wind Tunnels B and C written by T. D. Buchanan and published by . This book was released on 1983 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Normally in the development of flight vehicle systems, the staging characteristics have to be obtained experimentally. This report briefly describes the specialized methods used in wind tunnel tests at the Arnold Engineering Development Center in simulating the staging process. The capabilities of the mechanisms and the precision to which the data can be obtained are presented, along with descriptions of typical tests. (Author).
Download or read book Flight Test Techniques and Wind Tunnel and Model Testing Panels written by and published by . This book was released on 1955 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Store Separation Testing Techniques at the Arnold Engineering Development Center written by E. G Allee (Jr.) and published by . This book was released on 1980 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamic drop testing is a method of trajectory simulation whereby store models which are both geometrically and dynamically scaled are released in the wind tunnel air stream and the resulting trajectories are mapped photographically. Drop testing is often used when captive trajectory testing is not feasible or for final trajectory verification prior to flight tests. (Author).
Download or read book Comparison of Two Methods Used to Measure Aerodynamic Loads Acting on Captive Store Models in Wind Tunnel Tests written by and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a series of wind tunnel tests, measurements were made of the aerodynamic loads acting on eight different store configurations supported in and near the external captive position on a 1/20-scale model of the F-4C aircraft. Store models included blunt and contoured afterbody shapes, stable and unstable configurations, and large (pylon-mounted) and small (rack-mounted) configurations. Six components of forces and moments were measured using two methods of supporting the store models: an internal bracket support technique (IBS), and a dual sting support technique. Some characteristics of the interference flow field of the aircraft were also inferred.
