为了对再生冷却超燃冲压发动机进行热分析,结合三维燃气流场计算软件平台、国内航空煤油物性计算程序,发展了三维热分析计算程序.在Ma=4.9和5.86两种工作状态下,对再生冷却超燃发动机整机进行了三维热分析,得到了发动机局部高温区位置,并研究了冷却剂流量分配对发动机冷却的影响. In order to carry out the thermal analysis of regeneratively cooled scramjet engine, a three-dimensional thermal analysis program was developed based on the three-dimensional gas flow calculation software platform and the domestic aviation kerosene physical property calculation program. Under the conditions of Ma = 4.9 and 5.86, The whole engine was cooled and the three-dimensional thermal analysis was carried out. The location of engine high temperature zone was obtained and the influence of coolant flow distribution on the engine cooling was studied.