ESTIMATION AT SUBSONIC SPEEDS OF THE LONGITUDINAL AND LATERAL AERODYNAMIC CHARACTERISTICS OF WING-BODY COMBINATIONS AT ANGLES UP TO 90°

摘要

In the first part of this paper a theory is presented for estimating the normal force and pitching moment characteristics (including the effects of wing-body interference) of wings mounted on bodies. A pair of wings placed side by side can be specified which, when operating at a certain angle of attack different from the geometrical angle of attack, have the same aerodynamic properties as the wings in the presence of the body. The equivalent wings and effective angle of attack are determined, and these enable the wing-body normal force and pitching moment to be estimated for wing-body combinationsnat angles of attack up to 90 . Comparisons made with the results of a specially conducted series of experiments have provided gratifying supporting evidence for the theory.