大速度飞行时的直升机飞行载荷研究

直升机在大速度飞行时的飞行载荷研究,是当前新机研制中急待解决的重大课题。为解决此问题,本文在平衡计算时,采用对传统旋翼公式进行修正,在旋翼导数计算时,输入约200条导数曲线,然后采用三元插值等方法,处理旋翼气动问题。本文以法国“海豚”直升机为算例,通过三种飞行速度与法国资料进行了对比计算,获得了满意结果。

RESEARCH OF AN INVESTIGATION TO HELICOPTER FLIGHT LOAD AT HIGH SPEED

Research of an investigation to helicopter flight load at high speed is an: important proplem of present new helicopter development. To solve the proplem, this paper uses to correct to traditional formulas of rotor at the balance calculation, a at calculation of rotor derivatives, to input about 2,00 curves of derivatives, then uses 3-dimensions insert value to solve aerodynamic proplems of rotor. The paper gives an example of SA365N, computes 3 speeds and compares with Fran's datum, obtains good results.