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飞行器在高超声速飞行时,来流会对其前缘产生严重的烧蚀,因此需要对前缘进行钝化处理。而钝化会引起飞行器周围流场的变化,影响飞行器的性能。通过运用数值计算的方法,验证了加大钝化半径可以降低前缘的热流密度,研究了钝化对高超声速乘波体飞行器升阻比的影响,比较了不同钝化半径情况下飞行器的升阻比变化。研究表明钝化导致飞行器的升阻比下降且随着钝化半径增大升阻比降幅增大。
When the aircraft is flying at hypersonic speeds, the incoming stream will have a severe ablation of its leading edge, so the leading edge needs to be passivated. Passivation can cause changes in the flow field around the aircraft, affecting the performance of the aircraft. Through the numerical calculation, it is verified that increasing the passivation radius can reduce the heat flux density of the leading edge. The influence of passivation on the drag-drag ratio of hypersonic vehicle is studied. The influence of passivation radius on the lift- Resistance change. Studies have shown that passivation leads to a drop in drag-and-drop ratio of the aircraft and an increase in the drag-and-drop ratio as the passivation radius increases.