Captive Trajectory Store Separation System Of The Aedc Pwt 4 Foot Transonic Tunnel
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| Author | : |
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| Total Pages | : 0 |
| Release | : 1968 |
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The captive-trajectory store-separation system of the Aerodynamic Wind Tunnel, Transonic (4T), provides the capability for determining the separation trajectory of a store in the vicinity of the parent aircraft. This system may also be used as a six-degree-of-freedom support for conventional force tests with or without a parent installed, and as a pressure probe or transducer mounting platform for flow field surveys in the vicinity of a model. With the store and parent independently supported in the tunnel, trajectory generation involves measurement of forces and moments acting on the captive store model, converting these to full-scale adding other forces and moments which may be applied to the full-scale store, solving the equations of motion for store acceleration, integrating these equations to find store displacement, converting this movement to model scale, and physically moving the store model along its flight path. This report describes the captive-trajectory store-separation system and its testing capabilities and presents the technique used for trajectory generation. (Author).
| Author | : J. P. Christopher |
| Publisher | : |
| Total Pages | : 44 |
| Release | : 1968 |
| Genre | : |
| ISBN | : |
The captive-trajectory store-separation system of the Aerodynamic Wind Tunnel, Transonic (4T), provides the capability for determining the separation trajectory of a store in the vicinity of the parent aircraft. This system may also be used as a six-degree-of-freedom support for conventional force tests with or without a parent installed, and as a pressure probe or transducer mounting platform for flow field surveys in the vicinity of a model. With the store and parent independently supported in the tunnel, trajectory generation involves measurement of forces and moments acting on the captive store model, converting these to full-scale adding other forces and moments which may be applied to the full-scale store, solving the equations of motion for store acceleration, integrating these equations to find store displacement, converting this movement to model scale, and physically moving the store model along its flight path. This report describes the captive-trajectory store-separation system and its testing capabilities and presents the technique used for trajectory generation. (Author).
| Author | : T. D. Buchanan |
| Publisher | : |
| Total Pages | : 52 |
| Release | : 1983 |
| Genre | : Hypersonic wind tunnels |
| ISBN | : |
| Author | : Bertha M. Ryan |
| Publisher | : |
| Total Pages | : 82 |
| Release | : 1973 |
| Genre | : Weapons systems |
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| Author | : J. B. Carman (Jr.) |
| Publisher | : |
| Total Pages | : 92 |
| Release | : 1980 |
| Genre | : Airplanes, Military |
| ISBN | : |
The purpose of this report is to describe the formulation and basic composition of several store separation techniques (dynamic drop, wind tunnel computer simulation, and analytical computer simulation) along with the benefits and limitations of each. In the course of the report, guidelines are established for use in formulation of future store separation test and evaluation programs. (Author).
| Author | : J. P. Billingsley |
| Publisher | : |
| Total Pages | : 96 |
| Release | : 1979 |
| Genre | : Airplanes, Military |
| ISBN | : |
Tests were conducted on a four-finned, ogive-cylinder store model which was mounted on the von Karman Gas Dynamics Facility (VKF) Captive Trajectory System (CTS) in the Arnold Engineering Development Center (AEDC) Supersonic Wind Tunnel A. The purpose of these tests was to provide information necessary for an independent check on the VKF CTS trajectory mode results. Grid and trajectory data were obtained for the store, both in the free stream and in the interference flow field of a generalized parent-aircraft model. The Mach number was 1.63, with Reynolds numbers per foot of 5.0 and 3.8 million. Grid data from these tests were used in conjunction with the Air Force Flight Dynamics Laboratory (AFFDL) Six-Degree-of-Freedom Computer Program (SDFCP) to simulate the trajectories obtained by the VKF CTS. These SDFCP simulations compared favorably with the CTS trajectories, providing an important compared favorably with the CTS trajectories, providing an important independent verification of the VKF CTS trajectory mode results. This report documents this validation effort and provides a general description of the VKF CTS as well as guidelines for potential users of this system. (Author).
| Author | : Leon H. Schindel |
| Publisher | : |
| Total Pages | : 114 |
| Release | : 1975 |
| Genre | : Aerodynamics, Supersonic |
| ISBN | : |
This AGARDograph is a systematic collection of experimental results for use of engineers and designers, limited to externally carried, unpowered, unguided stores. In the sections dealing with store trajectories, the physical situation is described, the method of solution is indicated, and the final results are presented. Emphasis is on store motion in traversing the parent aircraft flowfield, with criteria for safe separation and methods of calculating flight path. Windtunnel test techniques are described, and some information on flight testing given. Analytical treatment is compared with flight and tunnel results. There are brief mentions of ejection systems and the effect of stores on aircraft performance.
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| Publisher | : |
| Total Pages | : 850 |
| Release | : |
| Genre | : Science |
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| Author | : R. E. Dix |
| Publisher | : |
| Total Pages | : 332 |
| Release | : 1976 |
| Genre | : Aerodynamic load |
| ISBN | : |
In a series of wind tunnel tests, measurements were made of the aerodynamic loads acting on eight different store configurations mounted in the external captive position on a one-twentieth-scale model of the F-4C aircraft. Store models included blunt and contoured afterbody shapes, stable and unstable designs, and large (one per pylon) and small (rack-mounted) configurations. The tests were conducted in an effort to evaluate sting effects on captive store loads. Sting effects were considered to consist of two contributions: the effect of altering the afterbody of a store to allow insertion of a sting, and the effect of the presence of the sting. Altering the afterbody of an unstable store influenced captive loads less than altering a stable configuration. It was also determined that the presence of a sting affected most the pitching and yawing moments.
| Author | : R. A. Paulk |
| Publisher | : |
| Total Pages | : 102 |
| Release | : 1976 |
| Genre | : Airplanes, Military |
| ISBN | : |
