论文部分内容阅读
为进行涡扇发动机放气起动特性的研究,建立了发动机放气起动模型,并进行了仿真计算;为进一步验证放气对发动机起动的影响,进行了发动机放气起动试验,获得了发动机放气起动的特点,定性验证了仿真计算结果;通过多次调整起动供油规律的试验,得到了发动机起动供油边界。计算和试验结果表明:在发动机起动过程中放气可提高发动机的起动稳定性,同时发动机排气温度也有所提高,发动机放气起动供油边界高于不放气起动供油边界,放气起动提高了发动机起动稳定裕度。
In order to study the characteristics of deflated starting of a turbofan engine, the engine starting model was established and simulated. In order to further verify the effect of deflation on the engine starting, the engine deaeration start test was carried out and the engine deaeration The characteristics of starting and qualitative verification of the simulation results were obtained. The engine starting fueling boundary was obtained by repeatedly adjusting the test of starting the oil supply. The calculation and test results show that deflation can improve the starting stability of the engine during engine start-up, meanwhile, the engine exhaust temperature also increases. The engine bleed-start fueling boundary is higher than the non-bleed-start fueling boundary, Improved engine starting stability margin.