某型涡轮喷气发动机空中起动试验研究

EXPERIMENTAL INVESTIGATION ON STARTING OF A TURBOJET ENGINE IN FLIGHT

关键词:  涡轮喷气发动机  高空模拟试车台  模拟试验  起动试验

Key words:  Turbojet engine  Altitude simulaed test  Simulated test  Sta- rting test

摘要:

介绍某型涡轮喷气发动机在高空台模拟空中起动试验技术。并根据试验结果及测量数据分析,得出在风车状态下无因次参数及点火起动过程中温度等参数随时间的变化曲线。本试验技术已为多个型号及机种的涡喷发动机做了上百次高空模拟空中起动试验,其技术可靠,方法切实可行。本试验结果对解决提高点火高度及空中起动试验问题具有实用价值。

Abstract:

If the aircraft engine dies out during flight a reliable restarting ability must be provided.This is one of important function of engine to ensure flight safety. In this paper, the experimental techniques of restarting of turbojet engine in flight are described.Based on the experimental results and measurement data under the condition of windmill, the transient curves of the dynamic parameters and temperature at the restarting process are presented. The experimental results are of practical use in increasing ignition altitude and solving restarting testing problem in flight.