LDV surveys over a fighter model at moderate to high angles of attackThe vortex flowfield over an advanced twin-tailed fighter configuration has been studied in a low-speed wind tunnel at two angles of attack using LDV, along with laser light sheet and surface flow visualizations. At 15 deg angles of attack, the vortices generated by the wing leading edge extension (LEX) were found to be unburst over the model and to pass outboard of the vertical tail. At 25 deg angle of attack, the vortices were shown to burst in the vicinity of the wing-LEX intersection and to impact directly on the vertical tails.
Document ID
19890040847
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Sellers, William L., III (NASA Langley Research Center Hampton, VA, United States)
Meyers, James F. (NASA Langley Research Center Hampton, VA, United States)
Hepner, Timothy E. (U.S. Army, Aviation Research and Development Command, Hampton VA, United States)