In-flight leading-edge vortex flow-field survey measurements on a F-18 aircraft at high angle of attackA rotating rake with 16 hemispherical-tipped five-hole probes was used to obtain flow-field measurements of the leading-edge-extension (LEX) vortex of the F-18 aircraft. The measurements were carried out under 1-g flight conditions at quasi-stabilized angles of attack of 10-52 deg and at Reynolds numbers based on a mean aerodynamic cord up to 16 x 10 to the 6th. Correlations with surface pressure, flow visualization, and computational fluid dynamics results are presented for angles of attack of 19 and 30 deg.
Document ID
19910069136
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Richwine, David M. (PRC, Inc. Edwards, CA, United States)
Fisher, David F. (NASA Flight Research Center Edwards, CA, United States)