Estimating And Analyzing Of Aerodynamic Of Hypersonic Vehicle

Hypersonic technology is the best stratage in the realm of aerospace technology in the 21st century. The hypersonic vehicle is characterized by its high speed and high ability of penetration., so the research on the conception of hypersonic vehicle system becomes The research on the conception of hypersonic vehicle system becomes strategical development way of martial powerful countries of the world. Hypersonic aerodynamics is one of key technologies, and develops rapidly. It is necessary to optimize shape designing and aerodynamic disposing for improving performance of hypersonic vehicle, and parametrical model is important base. This thesis establishes parametrical geometrical model of hypersonic cruise vehicle's qausi-waverider vehicle, and study hypersonic aerodynamic force and heating characteristic based on the model. This thesis has done following works:1) For the need of hypersonic vehicle's concept study and preliminary design and optimize design, it has established parametrical geometrical model of quasi-waverider vehicle by decomposing components, transforming and circumgyrating coordinate based on existing data.2) Inviscous aerodynamic has been computed by surface element method and pressure coefficient has been computed by different instance. Viscous drag coefficient has been computed by experiential formularies and aerodynamic disturbing between components has also been considered.3) Engineering calculating method of hypersonic spin-craft's body centerline has been established by heat flux balance equation based on heat environment of hypersonic vehicle. The temperature of body centerline has been computed by reference temperature and experience formulas and boundary layer transition has been considered.The results have been analyzed and compared with results of CFD and related data, to improve that precision of the engineering method of this thesis satisfies the need of engineer and the method is compact and effective and could be computation tool for hypersonic vehicle's concept study and preliminary design and optimize design.