提高飞行器升力的若干方法研究

本研究用数值模拟方法研究了四种增升方法。数据模拟的出发方程是可压流的Ｎ－Ｓ方程，格式为Ｂｅａｍ－Ｗａｒｍｉｎｇ格式的改进型。通过上述方法分别研究了：（１）动界效应对提高升力的作用；（２）涡的有利干扰对主升力面的影响；（３）吸气的驻涡增效应；（４）升力面下表面向下喷气的增升作用。研究结果表明，采用上述四种方法可有效地提高飞行器的升力，对改善飞行器的性能有着十分重要的意义。

The Investigation on some Methods for Increase Lift Force

Four methods of increasing lift for aircraft are investigated by numerical method.The Beam-Warming scheme is used to solve the compressible Navier-Stokes equations.Four increase lift methods include the moving surface effect,the interference between a vortex and lift surface, stationary vortex phenomenon by suction and jet from lift sur-face. The results show that four methods are very effective for Increase lift force and very important to improve the flight performance of air-craft.