Author: Stephen CordaPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
Dynamic Ground Effects Flight Test of an F-15 Aircraft
Author: Stephen CordaPublisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
Book Description
Dynamic Ground Effects Flight Test of an F-15 Aircraft
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781722185442
Category :
Languages : en
Pages : 28
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...
Dynamic Ground Effect for a Cranked Arrow Wing Airplane
Author: Robert E. CurryPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 22
Book Description
Scientific and Technical Aerospace Reports
Author: Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1450
Book Description
Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1484
Book Description
Dynamic Ground-effect Measurements on the F-15 STOL and Maneuver Technology Demonstrator (S/MTD) Configuration
Author: Guy T. KemmerlyPublisher:
ISBN:
Category : Short take-off and landing aircraft
Languages : en
Pages : 36
Book Description
Investigation of a Technique for Measuring Dynamic Ground Effect in a Subsonic Wind Tunnel
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 610
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: