某型燃气涡轮发动机风车状态内阻力的计算

由于很多燃气涡轮发动机都缺乏计算风车特性必需的低转速状态的部件特性，给计算发动机风车状态的特性带来了很大的困难。但是，风车特性是燃气涡轮发动机设计和使用过程中必须考虑的，因此，本文参考尤．阿．李特维诺夫提出的计算发动机风车特性的方法，计算了燃气涡轮发动机风车状态时的内阻力。从计算结果分析，该方法不依赖于部件特性，非常适合燃气涡轮发动机的风车特性计算。

The Calculation of Windmilling Characteristics of a Gas Turbine Engine

The gas turbine engine windmilling is a state that when the engine doesn't work,the rotors temporarily operate at a sub-steady rotating speed due to the airflow ram and the co-work of aerodynamics,rotor inertia and drag torque.During windmilling,computing aerodynamic parameters of gas turbine engine is difficult.In this paper,a method for computing windmilling drag is described.The method for computing windmilling characteristics of gas turbine engine is from reference[6].This method only requires design parameters of gas turbine engine to compute windmilling drag.According to this method,computer programs that compute windmilling drag of turbojet engine are edited.With this program,the windmilling characteristics of the turbojet engine are computed.The results indicate that the method from reference [6] is suitable for computing windmilling drag of gas turbine engines with no component characteristics.