吸气式高超声速飞行器气动耦合干扰效应研究

摘要

As there are many intense coupling characteristics between fuselage and scramjet, which inevitably has a significant impact on aircraft design, control system design and analysis of aircraft dynamics.Therefore, it is essential to carry out deep research on aerodynamic coupling interference effects between fuselage and scramjet.First of all, inviscid aerodynamic characteristics calculation of various components of hypersonic vehicle is conducted, and then aerodynamic coupling interference effects between fuselage and scramjet are carried out by exhaust plume model.Finally, simulation and verification are conducted based on vehicle parametric model.Results show that exhaust plume analysis model can accurately reflect the interference characteristics between fuselage and scramjet, which provides the basis for the fuselage / engine integrated design, control system design and dynamic characteristics of analysis of Air-breathing hypersonic vehicle.%研究飞行器与冲压发动机耦合干扰效率优化问题,由于吸气式高超声速飞行器机身与冲压发动机之间存在高度耦合,针对耦合效应不可避免对飞行器稳定性产生影响,为提高控制系统性能,提出飞行器机身与发动机之间的耦合干扰效应问题展开深入研究.在高超声速飞行器各部件无粘气动特性的基础上,采用尾气羽流分析模型研究机身与冲压发动机耦合干扰效应,并基于飞行器几何参数化模型进行仿真.结果表明分析模型能较精确地快速反应机身与冲压发动机之间耦合干扰效应,为吸气式高超声速飞行器机身/发动机一体化设计和控制系统优化设计及其动力学特性研究分析提供依据.