Accession Number : ADP006229

Title :   The Effect of Wing Planform on Low Speed Buffet,

Corporate Author : NATIONAL AERONAUTICAL ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Zan, S. J. ; Maull, D. J.

Report Date : SEP 1990

Pagination or Media Count : 15

Abstract : 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.

Descriptors :   *BUFFETING, SWEPT WINGS, AERODYNAMIC CONFIGURATIONS, ASPECT RATIO, SHARP BODIES, LEADING EDGES, TRAILING EDGES, ANGLE OF ATTACK, EXCITATION, BENDING, INCOMPRESSIBLE FLOW, AERODYNAMIC LOADING, UNSTEADY FLOW, CANADA, GREAT BRITAIN.

Subject Categories : Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE