带翼梢外挂的CK1机翼颤振分析

Analysis for Flutter of CKl Wing with Tip External Stores

本文根据颤振运动方程,应用v～g参数法和非定常气动力的偶极子格网法计算了CK1机翼翼尖带外挂物红外器时的颤振,分析了翼尖外挂物对机翼颤振的影响,确定翼尖外挂有利的配置方案.计算结果表明CK1机翼的颤振对梢部的重量分布是敏感的,红外器的弦向位置及翼尖配重布置得当,则可提高颤振速度,否则也可降低颤振速度。

According to the flutter equation, the flutter of CK1 wing with tip external stores was investigated by using v - g method and Doublet-Lattice method of unsteady aerodynamics. The effect of tip external store on fluttering wing was analysed and then the suitable position of tip external stores was determined. The result of calculation indicated that the flutter of CK1 wing to the weight distribution at the wing tip is sensitive, if the position of the infrared device along the chord and the weight of tip chunk are suitable,the flutter speed could be increased,otherwise it could be decreased.