航空发动机飞行载荷谱的预测

提出了基于飞机的设计飞行任务剖面、飞行力学及发动机原理的发动机飞行载荷的预测方法，即首先将飞机的设计飞行任务剖面通过飞行力学的基本原理转化为发动机的推力（或油门）剖面，然后通过发动机性能计算获得发动机的其它工作状态参数，从而获得发动机的飞行载荷谱。最后以某发动机为例，预测了该发动机装备在某新型教练机上时的飞行载荷

PREDICTION OF AEROENGINE FLIGHT LOAD SPECTRUM

A method of aeroengine flight load spectrum prediction is developed,which uses principles of aircraft flight mechanics to turn aircraft design mission profiles into engine thrust profiles.Flight altitude and flight velocity are acquired by solving the aircraft motion equations with the aircraft motion constraints.In the result of the engine performance calculations,the other engine operating parameters can be obtained.In the flight process from take-off to landing,taking the final value of the previous operation as the initial value of the following one,the engine flight load spectrum can be calculated for a specific flight mission.As an example,the flight load spectrum of an engine used on a trainer has been calculated.