Dynamic Ground Effects Flight Test of an F-15 Aircraft
Author: Stephen Corda
Publisher:
Published: 1994
Total Pages: 32
ISBN-13:
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Author: Stephen Corda
Publisher:
Published: 1994
Total Pages: 32
ISBN-13:
DOWNLOAD EBOOKAuthor: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
Published: 2018-07-02
Total Pages: 28
ISBN-13: 9781722185442
DOWNLOAD EBOOKFlight 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:
Published: 1997
Total Pages: 22
ISBN-13:
DOWNLOAD EBOOKAuthor: Guy T. Kemmerly
Publisher:
Published: 1990
Total Pages: 36
ISBN-13:
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Publisher:
Published: 1995
Total Pages: 548
ISBN-13:
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Publisher:
Published:
Total Pages: 1450
ISBN-13:
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Publisher:
Published: 1995
Total Pages: 1484
ISBN-13:
DOWNLOAD EBOOKAuthor: Guy T. Kemmerly
Publisher:
Published: 1990
Total Pages: 36
ISBN-13:
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Publisher:
Published: 1999
Total Pages: 68
ISBN-13:
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Publisher:
Published: 1995
Total Pages: 610
ISBN-13:
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