EFFECTS OF PROPELLER ON THE TURNING FLIGHT OF OLD FIGHTERS

This paper is concerned with the effects of propeller on the turning f light of old fighters. The effects of propeller are composed of three elements. One of them is the aerodynamic moments induced by the vortex . The second is the gyro moments and the third is the torque reaction due to propeller. The curves of trailing vortices are spiral. Exact an alysis is very difficult. Therefore the vortices are decomposed into t he axial and circumferential components in this paper. The latter give s almost no effect. Approximate analyses of aerodynamic moments and st ability derivatives were performed. The results were applied to the si mulations of turning flight of old fighters. Considerable effects are shown in the figures.