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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。 相似文献
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An experimental investigation of the shock-buffet phenomenon subject to unsteady pitching supercritical airfoil around its quarter chord has been conducted in a transonic wind tunnel. The model was equipped with pressure taps connected to the fast response pressuretransducers. Measurements were conducted at different free-stream Mach number from 0.61 to0.76. The principle goal of this investigation was to experimentally discuss the shock-buffet criterion over a SC(2)-0410 supercritical pitching ... 相似文献
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