【摘要】 在风洞中进行了火箭的抖振实验,根据火箭固有振动的特点,利用动导数测量的方法,给出了气动阻尼,并通过调整模型的支持刚度,运用自由振动法,测出了实验模型的负气动阻尼,纹影录相揭示了抖振及其与激波位置的关系,为确定火箭的抖振载荷提供了数据。更多还原

【Abstract】 The buffeting tests were concerned in wind tunnel. Based on the natural vibrating characteristic of the rocket, the aerodynamic damping moments were measured and the negative damping moments were successfully given out with the free oscillating method. The supporting rigidity of the model were designed to induce the model to take place buffeting and the relation between the buffeting and the position of the shock wave was shown clearly by schlieren video camera recording. The results contributed to calculate the buffeting loads of the rocket.更多还原