The Effect of Wing Planform on Low Speed Buffet,
NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)
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This paper is concerned with a parametric experimental investigation into low speed buffet. The influence of wing generalized mass, reduced frequency, aspect ratio, dynamic pressure and wing sweep on the buffet excitation parameter has been studied for a simple wing model with sharp leading and trailing edges. The investigation was limited to buffeting response in the fundamental bending mode. The angle of incidence range for the experiments was 0 deg to 40 deg, however the paper concentrates on results at 10 deg incidence near stall and at 30 deg incidence. The influence of aspect ratio on the buffet excitation parameter was found to be significant at high incidences at values of reduced frequency below common for subsonic flight.