亚声速全机纵横向气动特性计算方法

本文介绍了一种涡格方法,它适用于亚声速飞机的纵横向气动特性计算。该方法中,升力面用布置在中弧面的平均平面上的单涡格层,或用布置在上、下表面的平均平面上的双涡格层模拟,机身则由布置在表面上的四边形涡环或由布置在一组同轴棱柱面上的涡栅来模拟。地面效应用布置镜像涡系的办法处理。文中讨论了机翼尾涡偏斜对平尾、立尾的影响。 该方法计算的结果与有关的理论和实验进行了比较。这些比较表明,此方法计算精度满足工程设计的要求。

THE CALCULATION METHOD FOR SUBSONIC LONGITUDINAL AND LATERAL AERODYNAMIC CHARACTERISTICS OF COMPLETE AIRCRAFT CONFIGURATION

This paper presents a vortex lattice method which is suitable for the calculation of subsonic longitudinal and lateral aerodynamic characteristics of aircraft. In the method, the lifting surface is simulated by a single vortex lattics layer arranged on the average surface of wing mean camber surface, or by a double vortex lattice layer arranged on the average surfaces of the upper surface and the lower surface of the wing. The body is simulated by the quadrangular vortex rings arranged on the surface, or by a vortex grid arranged on a series of concentrical multi-angular cylindrical surfaces. The ground effect is simulated by an image vortex system. The effect of wing wake vortex deflection on horizontal tail and vertical tail is discussed.The comparison of the results obtained by the method with other theoretical and experimental ones is presented . It is confirmed that the method has enough accuracy for engineering application.