锥-柱体外形脉动压力及抖振载荷响应研究

The Research of Fluctuating Pressure and Buffeting Load on the Cone-column Body

针对锥-柱体外形,通过风洞试验研究其在亚声速、跨声速和超声速条件下的脉动压力特性,分析了均方根脉动压力系数和其功率谱随马赫数、攻角等变化规律,并给出了脉动压力的空间分布及其影响区域,由此所得到的相关规律与理论、工程经验相符合.同时,根据脉动压力特性进一步推导了抖振载荷的计算方程,计算了某模型的抖振载荷,并与定常载荷进行了比较.

For the cone-column body,the character of fluctuating pressure during its subsonic flight,transonic flight and supersonic flight had been research in wind tunnel experiments.Regularity of the mean-square root and power density function with variational Mach number and attack angle had been analyzed.The distribution and influencing area of fluctuating pressure had been summarized.Regularity of fluctuating pressure had been proved with academic calculation and engineering experience.Synchronously,analysis of ...