Thrust-reverser Flow Investigation on a Twin-engine Transport
Author : Gregory M. Gatlin
Publisher :
Page : 160 pages
File Size : 44,30 MB
Release : 1988
Category : Jet planes
ISBN :
Author : Gregory M. Gatlin
Publisher :
Page : 160 pages
File Size : 44,30 MB
Release : 1988
Category : Jet planes
ISBN :
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
Page : 160 pages
File Size : 17,88 MB
Release : 2018-07-23
Category :
ISBN : 9781723460135
An investigation was conducted in the NASA Langley 14 x 22 foot Subsonic Tunnel to study the effects of engine thrust reversing on an aft-mounted twin-engine transport and to develop effective testing techniques. Testing was done over a fixed and a moving-belt ground plane and over a pressure instrumented ground board. Free-stream dynamic pressure was set at values up to 12.2 psf, which corresponded to a maximum Reynolds number based on the mean aerodynamic chord of 765,000. The thrust reversers examined included cascade, target and four-door configurations. The investigation focused on the range of free-stream velocities and engine thrust-reverser flow rates that would be typical for landing ground-roll conditions. Flow visualization techniques were investigated, and the use of water or smoke injected into the reverser flow proved effective to determine the forward progression of the reversed flow and reingestion limits. When testing over a moving-belt ground plane, as opposed to a fixed ground plane, forward penetration of the reversed flow was reduced. The use of a pressure-instrumented ground board enabled reversed flow ground velocities to be obtained, and it provided a means by which to identify the reversed flow impingement point on the ground. Gatlin, Gregory M. and Quinto, P. Frank Langley Research Center ENGINE TESTS; FREE FLOW; GROUND EFFECT (AERODYNAMICS); REVERSED FLOW; THRUST REVERSAL; TRANSPORT AIRCRAFT; DYNAMIC PRESSURE; FLOW VELOCITY; FLOW VISUALIZATION; WIND TUNNEL TESTS...
Author :
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Page : 892 pages
File Size : 27,30 MB
Release : 1994
Category : Aeronautics
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Author :
Publisher :
Page : 160 pages
File Size : 24,24 MB
Release : 1988
Category : Science
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Author :
Publisher :
Page : 178 pages
File Size : 45,89 MB
Release : 1991
Category : Aeronautics
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Author :
Publisher :
Page : 1432 pages
File Size : 16,58 MB
Release : 1990-11
Category : Government publications
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Author :
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Page : 1224 pages
File Size : 22,49 MB
Release :
Category : Government publications
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Author : Gregory M. Gatlin
Publisher :
Page : 160 pages
File Size : 45,76 MB
Release : 1988
Category : Jet planes
ISBN :
Author :
Publisher :
Page : 108 pages
File Size : 39,69 MB
Release : 1987
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Author :
Publisher :
Page : 182 pages
File Size : 17,48 MB
Release : 1962
Category : Aeronautics
ISBN :