空天飞机气动热的工程预测方法

首先简要地分析了空天飞机在上升段和再入段遇到的严峻的热环境,并指出:为了进行空天飞机的概念研究和初步设计,必须发展气动热的工程预测方法。接着介绍了国外可用于预测空天飞机气动热的工程方法,其中包括预测迎风面中心线、背风面中心线和横向分布的气动加热的方法,重点介绍了 NASA Langley 研究中心的轴对称比拟三维边界层(AA 3DB L)程序和它的结果。同时,还讨论了空天飞机气动热预测的一个特殊问题即激波干扰加热,着重介绍了机身头部的弓形激波和进气道外罩唇部激波的相互干扰以及机身头部的弓形激波和机翼前缘激波间的相互干扰,对后面这种情况,还介绍了工程预测方法。

THE PREDICTING METHOD OF AERODYNAMIC HEATING FOR AEROSPACE PLANE

It is first analysed briefly in this paper that the aero-space plane will experience severe aerothermodynamic environment dur-ing ascent as well as during reentry.The necessity of the predication ofthe aerodynamic heating in the stage of concept and preliminary designfor aerospace plane is explained.The predicting method in foreigncountry can be used in the predication of the aerodynamic heating foraerospace plane,including the predicting method of heating for thewindward centerline,the leeward centerline,the lateral direction offthe symmetry plane.The Axisymmetric Analouge Three-DimensionalBoundary Layer (AA3DBL) code and its results in the NASA LangleyResearch Center are emphasised.One special problem about the predi-cation of the aerodynamic heating for aerospace plane,shock-on-shockinteraction is discussed.Our interest lies in the region in which thebow shock of the nose of the body interferes with the bow shock ofthe blunt lipped inlet cowl or with the shock of the wing leading edge.The predicting method of the aerodynamic heating of the wing leadingedge for aerospace plane is introduced.