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对一种环包式串联涡轮冲压组合发动机的两种模态转换策略——模态转换过程推力连续和流量连续进行了研究。通过性能参数分析对两种策略进行了比较,结果表明流量连续优于推力连续的模态转换策略。同时,给出了某涡轮发动机的高度-速度特性,分析了涡轮基推力衰减马赫数对模态转换马赫数选取的影响。
Two kinds of modal transformation strategies of a toroidal tandem turbo-ram combined engine, namely, the thrust continuous and the continuous flow were studied in the process of modal conversion. The two strategies are compared through the performance parameter analysis. The results show that the flow rate is superior to the thrust continuous mode switching strategy continuously. At the same time, the height-velocity characteristics of a turbine engine are given. The influence of turbine base thrust decay Mach number on the selection of modal transition Mach number is analyzed.