航空发动机高原起动性能改善措施

为了解决航空发动机高原起动超温和转速悬挂等问题,以某型航空发动机起动过程为研究对象,根据高原环境对发动机起动过程的影响进行理论分析,提出了优化高原起动措施,并进行了高原试验验证,摸索出各措施对起动过程的影响程度。结果表明:在发动机起动过程中采用飞机卸载的方式可使排气温度降低3%,起动机脱开转速提高3%;起动机功率提高约1%,点火转速及脱开转速提高约2%,起动时间缩短约8%。

Improvement Measures of Aeroengine Starting Performance in Plateau

In order to solve the problems of aeroengine starting over temperature and speed suspension in plateau,taking the starting process of a certain aeroengine as the research object,the theoretical analysis was carried out based on the influence of the plateau environment on the starting process of the engine. The optimum starting measures in plateau were put forward and the test verification was carried out to find out the influence of each measure on the starting process. The results show that the exhaust temperature is reduced by3%,the starting speed is increased by 3%,the starting power is increased by about 1%,the ignition speed and stripping speed are increased by about 2% and the starting time is shortened by about 8% by adopting aircraft unloading during the engine starting.