摘要
风车特性是航空发动机设计和考核的重要性能指标,由于风车状态严重偏离发动机的设计工作状态,因此很难准确确定发动机的风车特性尤其是风车阻力特性。本文分析了航空发动机风车阻力的产生机理,推导了发动机高空台试验中风车阻力确定的计算公式,介绍了航空发动机风车阻力确定的试验方法。该方法在某型涡扇发动机风车特性试验中得到了成功应用。
Windmilling characteristics are one of the important performance indices to engine design and assessment. It is very difficult to accurately determine engine windmilling characteristics,in particular windmilling drag,for the windmilling state seriously deviates from the en- gine design point. This paper described the mechanism of the aero-engine windmilling drag,and theoretically deduced the formula for determining it in the simulated altitude test, and finally the experimental method for determining the engine windmilling drag was introduced. The method was satisfactorily applied to the windmilling characteristics test of a turbofan engine.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2006年第2期391-395,共5页
Journal of Aerospace Power
关键词
航空
航天推进系统
航空发动机
高空模拟
风车
风车阻力
aerospace propulsion system
aero-engine
altitude simulation
windmilling
windmilling drag
