Dynamic Ground Effects Flight Test of an F-15 Aircraft PDF Download
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Author: Stephen Corda
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
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Book Description
Author: Stephen Corda
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722185442
Category :
Languages : en
Pages : 28
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Book Description
Flight tests to determine the changes in the aerodynamic characteristics of an F-15 aircraft caused by dynamic ground effects are described. Data were obtained for low and high sink rates between 0.7 and 6.5 ft/sec and at two landing approach speeds and flap settings: 150 kn with the flaps down and 170 kn with the flaps up. Simple correlation curves are given for the change in aerodynamic coefficients because of ground effects as a function of sink rate. Ground effects generally caused an increase in the lift, drag, and nose-down pitching movement coefficients. The change in the lift coefficient increased from approximately 0.05 at the high-sink rate to approximately 0.10 at the low-sink rate. The change in the drag coefficient increased from approximately 0 to 0.03 over this decreasing sink rate range. No significant difference because of the approach configuration was evident for lift and drag; however, a significant difference in pitching movement was observed for the two approach speeds and flap settings. For the 170 kn with the flaps up configuration, the change in the nose-down pitching movement increased from approximately -0.008 to -0.016. For the 150 kn with the flaps down configuration, the change was approximately -0.008 to -0.038. Corda, Stephen and Stephenson, Mark T. and Burcham, Frank W. and Curry, Robert E. Armstrong Flight Research Center RTOP 533-02-31...
Author: Robert E. Curry
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 22
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Book Description
Author: Guy T. Kemmerly
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 548
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1450
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Book Description
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1484
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Book Description
Author: Guy T. Kemmerly
Publisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 36
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 610
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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.
