近空间高超声速气动力数据天地换算研究

STUDY ON GROUND-TO-FLIGHT EXTRAPOLATION OF NEAR SPACE HYPERSONIC AERODYNAMIC DATA

该文针对高升阻比面对称飞行器近空间高超声速飞行环境,考虑马赫数效应、粘性干扰效应和真实气体效应等多种复杂气动效应对飞行器气动力数据的影响,采用CFD数值模拟技术和气动数据相关性理论分析方法,建立了基于地面风洞试验外推获取实际飞行状态下气动力数据的天地换算方法;并采用CFD技术对气动力数据天地换算的精确性进行了验证。

At near space and hypersonic environments, the aerodynamic force data of a vehicle with high lift-to-drag ratio was considered with complex aerodynamic effects, such as Mach number effect, viscous interference effect, and real gas effect. With the CFD numerical simulation technology and the data correlation method, the extrapolation method of aerodynamic data from ground wind tunnel test to actual flight state was established. The accuracy of ground-to-flight extrapolation method was verified by the CFD technology.