Low-speed Wind-tunnel Measurements of the Lift, Drag and Pitching Moment on Three Symmetrical Ogee-Wing Models and on a Symmetrical Slender Wing-body Model

摘要

Measurements have been made of the lift, drag and pitching moment of three ogee models and a wing-body model, all having a slenderness ratio (semispan/root chord) of 0.209. The associated surface flow patterns were also observed.nAlthough the models were symmetrical and did not represent strictly comparable fully optimised designs of possible layouts for a supersonic trans¬port, some useful low-speed aerodynamic comparisons between the integrated or ogee models and the wing-body model were obtained. The results show:-n(i) very similar lift characteristics,n(ii) a slightly smaller drag for the wing body model,n(iii) better static longitudinal stability characteristics for the wing-body model, especially when the wing planform was not faired smoothly into the bodey.