Dynamic Ground Effects Flight Test Of An F 15 Aircraft
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Dynamic Ground Effects Flight Test of an F-15 Aircraft
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 28 |
Release | : 2018-07-02 |
Genre | : |
ISBN | : 9781722185442 |
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...
Dynamic Ground-effect Measurements on the F-15 STOL and Maneuver Technology Demonstrator (S/MTD) Configuration
Author | : Guy T. Kemmerly |
Publisher | : |
Total Pages | : 36 |
Release | : 1990 |
Genre | : Short take-off and landing aircraft |
ISBN | : |
Dynamic Ground-effect Measurements on the F-15 STOL and Maneuver Technology Demonstrator (S/MTD) Configuration
Author | : Guy T. Kemmerly |
Publisher | : |
Total Pages | : 36 |
Release | : 1990 |
Genre | : Short take-off and landing aircraft |
ISBN | : |
Scientific and Technical Aerospace Reports
Author | : |
Publisher | : |
Total Pages | : 610 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
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.