低雷诺数对某型涡扇发动机稳定性影响及扩稳调节规律分析研究

A Study of Low Reynolds Number Effects on the Stability of a Turbofan Engine and the Adjust Law to Expand the Engine's Stability

在高空、低速飞行时,雷诺数对发动机性能和稳定性有较大的影响。本文计算分析了飞行高度H=20 km、飞行速度Ma=0.7时,雷诺数对某型涡扇发动机性能和稳定性的影响,在此基础上,提出了为扩大发动机工作稳定性而应采取的调节规律。

Reynolds number has influence on turbofan performance,especially at high altitude and low specd.This paper calculates and analyses the influence of the Reynolds number effects in the performance and stability of a turbofan engine at H=20 km and Ma=0.7,and on this bases,puts forward an adjusting law to expand the stability of the engine.