Flight-measured Ground Effect on a Low-aspect-ratio Ogee Wing Including a Comparison with Wind-tunnel Results PDF Download
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Author: L. Stewart Rolls
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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Author: L. Stewart Rolls
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 34
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Author: Paul A. Baker
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 52
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Book Description
A constant-angle-of-attack-approach technique was used to measure ground effect on several low -aspect-ratio aircraft. The flight results were compared with results from constant -altitude flybys, wind-tunnel studies, and theoretical prediction data. It was found that the constantangle-of-attack technique provided data that were consistent with data obtained from constant-altitude flybys and required fewer runs to obtain the same amount of data. The test results from an F5D-1 airplane modified with an ogee wing, a prototype F5D-1 airplane, two XB-70 airplanes, and an F-104A airplane indicate that theory and wind-tunnel results adequately predict the trends caused by ground effect as a function of height and aspect ratio. However, the magnitude of these predictions did not always agree with the flightmeasured results. In addition, there was consistent evidence that the aircraft encountered ground effect at a height above one wing span.
Author: Vernard E. Lockwood
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 42
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 418
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1086
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1008
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1464
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Author: C. Thomas Snyder
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 60
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Book Description
The influence of ground effect on the landing flare characteristics of a supersonic transport airplane (SST) was investigated in a fixed cockpit simulator. Simulations of an ogee-modified delta-wing F5D-1 airplane and a subsonic jet transport were used for evaluating the simulator and as a reference configurations during landing comparisons. Dynamic responses of the SST to seven different ground-effect models during controls-fixed and constant-attitude descents are also presented, followed by piloted subjective assessments. A summary of ground effects on delta-like wings is included in the appendixes.
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1348
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Author: United States. National Aeronautics and Space Administration Scientific and Technical Information Division
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 478
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