Modeling And Analysis On Aerodynamic Heating For Hypersonic Glide Vehicle

Hypersonic-Glide Vehicle (HGV) has been a hot topic in the aerospace area because of its high speed, good break-defense capability, and well-known attack performance. How to forecast the characteristics of HGV's aerodynamic heating currectly is the basic for the design of the vehicle's thermal protection system (TPS). It is one of the key technologyies to put HGV into practice.The pneumatic configuration and the trajectory are the most important factors for the complex aerodynamics heating problem of HGV. So this thesis pays more attention to the pneumatic configuration and the trajectory style of HGV, firstly. We explain why the vehicle should take waverider as its basic congfiation considering the need of trajectory. And then, A lot of reasearch have been done to the design method of waverider configuration and its aerodynamic performance.After a detailed introduction of the slip-glide trajectory, the three-axis motion equation of HGV is built. We design a typical configuration of HGV and analysis the influence what the passivation will have for the vehicle's aerodynamic. Based on its aerodynamic data, a typical slip-glide trajectory is investigated.Taking the pneumatic configuration and the trajectory of HGV into account, this thesis builds a basal model for the vehicle's aerodynamic heating problem. The methods of how to analysis HGV's rarefied effect, high-temperature effect, the flow state and temperature on the surface have been gotten reasonably. Based on the data of the typical waverider configuration and skip-glide trajectory, an analysis model for HGV has been built primarily.According to the analysis model, this thesis establishes estimation and numerical simulation method for HGV's aerodynamic heating. With the assumption of instantaneous radiation equilibrium, the influence what the passivation will have to the vehicle's aerodynamic heating, the heat flux and temperature distribution of the stagnation point vary with time have been well studied either. The temperature distributions of the leading eadges and surface in different surroundings have been investigated by the estimating method. Using numerical simulation, how the high-temperature effect and the flow state would influent the aerodynamic heating on the stagnation point, the upper and lower surface has been well analysised. The results obtained by differert methods are compared in the end.This thesis may have some referenced significance on the late-model HGV's aerodynamic heating .