Unsteady wake measurements of an oscillating flap at transonic speedsThe steady and unsteady wake profiles of an airfoil with an oscillating flap were measured at nominal free stream Mach number of 0.8 in the NASA Ames 11 x 11-foot wind tunnel. The instantaneous wake velocity and pressure profiles at four axial locations are presented up to one chord length from the trailing edge. Both fundamental harmonic frequency and typical time history data are presented to observe the effects of airfoil incidence and flap angle. The drag coefficient obtained from the wake pressure measurements is compared with that obtained from the airfoil pressure distribution.
Document ID
19840063325
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bodapati, S. (Stanford University Stanford, CA, United States)