高超声速飞行器脉冲风洞测力系统分析研究

来源 :第八届全国高超声速科技学术会议 | 被引量 : 0次 | 上传用户:qpalzm951
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  吸气式高超声速飞行器具有高度耦合的特点,必须进行一体化试验研究,其中利用大口径脉冲风洞是获得飞行器气动性能的重要手段。由于脉冲风洞试验时间短、冲击载荷大,试验过程中模型测力系统会产生强烈的振动,因而需对其进行结构动力学研究。针对试验模型和测力天平组成的测力系统进行结构动力学建模,通过仿真计算分析和锤击试验方法对测力天平的振动模态进行了计算和测定;最后根据振型叠加原理,通过各阶模态和广义位移矩阵,给出了天平的整体位移函数,进一步加深了对天平动力学特性的认识,为整个试验模型系统的结构动力学研究奠定基础。
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