涡轮喷气发动机双变量调节计划研究

 本文对最大状态下双转子发动机的双变量调节计划进行了讨论,用非线性模拟计算程序对双变量发动机进行性能计算,其结果是双变量涡喷发动机性能大大优于单变量调节计划的涡喷发动机。虽然有不同的二种性能参数组合的计划,但每种计划仅适用发动机的一种情况使用。当釆用具有相同的低压转子转速和相同的涡轮前温度的计划时,高压压气机的喘振边界将缩小,文中的一种复杂调节计划是解决困难的一种好方法。最后对双变量调节计划使用中遇到的问题进行了分析。

STUDY ON TWO VARIABLE CONTROL PLAN FOR TWIN SPOOL TURBOJET ENGINE

The two-variable control plan for twin spool turbojet engine under maximum state is discussed in this paper. The performances of the engine adopting two-variable control plan are calculated with the nonlinear simulation programs. The result of the calculation shows that engine performances with two-variable control plan are higher than those with single variable plan. There are various combination schemes of two performance parameters, while every scheme is only suitable for a use of engine. When the control plan including equal low pressure rotating lspeed and equal turbine temperature is adopted, surge margin of high pressure compressor will be reduced. A complex control plan designed in this paper may be a good way out of difficulty. At the end of the paper, some problems met in practice for two-variable control system of engine are analyzed.