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随着国防和航空航天事业的发展,高超音速飞行器的研究迫在眉睫,而再入飞行段是整个飞行任务能否顺利完成的关键阶段,其飞行特性以及再入反推力技术至关重要。文章首先回顾了国外高超音速飞行器的研究进展以及国内的研究现状。随后针对高超音速飞行器的再入飞行特定阶段,深入研究其飞行特性,分析其强非线性、强时变性、强不确定性、强结构挠性、强实时性以及强约束性的机理。针对高超音速飞行器临近空间动压不足、舵面效率低的特点,引入反推力控制,提出了反推力控制的关键技术,给出了反推力器配置、反推力器点火逻辑、离散脉冲调制器设计、反推力与舵面控制分配以及二者复合控制的工程实现的方法。对高超音速再入飞行的进一步研究提供了一定的理论基础和工程应用价值。
With the development of the national defense and aerospace industries, the study of hypersonic vehicles is imminent. Reentry flight is the crucial stage for the successful completion of the entire mission. The flight characteristics and the technology of re-entry thrust are very important. The article first reviews the research progress of hypersonic vehicles in foreign countries and the current research situation in China. Then for the specific stage of reentry flight of hypersonic vehicle, the flight characteristics of the hypersonic vehicle are deeply studied, and the mechanism of its strong nonlinearity, strong time-variant, strong uncertainty, strong structural flexibility, strong real-time and strong restraint are analyzed. In view of the lack of dynamic pressure near the hypersonic vehicle and the low efficiency of the rudder surface, the thrust control is introduced and the key technologies of the thrust control are proposed. The configurations of the thrust reverser, the ignition logic of the thrust reverser and the discrete pulse modulator , Thrust and rudder surface control distribution and composite control of the two projects to achieve the method. The further study of hypersonic reentry flight provides some theoretical basis and engineering application value.