某型发动机换算推力的温度修正

实践表明,大气湿度的变化对发动机性能及其工作特性有一定的影响,这种影响在夏天地面台架试车时更为明显.大气湿度对发动机换算推力影响的物理本质是,随着湿度的变化,进入发动机的空气的热物理性质也发生了变化.本文在分析这种影响的基础上利用相似原理推导了该型发动机换算推力的大气湿度修正系数,并结合该型发动机的设计参数,利用变比热的热力循环计算方法得到了不同温度和湿度下换算推力的大气湿度修正系数.

Effect of Atmospheric Humidity on Engine Conversion Thrust

Variation of atmospheric humidity has been proved effective on engine behavior and performance. It is more obvious when engines are tested in summer, The physical nature of humidity effects on engine conversion thrust is that thermo-physical characteristics of air entering engine varies with humidity. Analyzing the effect and using similar principle, atmospheric humidity corrected coefficient has been deduced for conversion thrust, With the help of engine various specific heat model we get the corrected coefficient value at different temperature and humidity.