摘要
利用流量特性试验得到的相关流路元件的流阻计算模型,和旋转状态下阶梯齿风阻温升计算方法,通过调节封严篦齿间隙等参数,对航空发动机空气系统的压力、温度进行验算标定,并根据验算结果分析发现后续试验中存在和需要注意的问题。验算标定结果表明:通过对发动机试验工况的验算标定,可发现试验中存在的问题,较准确地模拟出后续试验中的问题和试验风险,确保发动机的工作安全,并为空气系统的进一步改进和优化提供依据。
A calibration method for aero-engine air system was presented, with the air system throttle ele-ments flow loss coefficient experiment data and the rotating step labyrinth seal windage temperature rise cal-culation method. The pressure and temperature of air system were calibrated by adjusting the labyrinth seal clearance. Some possible and noteworthy problems in the following tests were found out according to the cal-ibrated results. The results show that through the calibration of experimental conditions, the problems could be revealed and the risk of the following tests can be simulated perfectly to ensure the safety of engine work-ing which could be referential for the further improvements of engine＆#39;s air system.
出处
《燃气涡轮试验与研究》
北大核心
2014年第1期49-52,共4页
Gas Turbine Experiment and Research
关键词
航空发动机
空气系统
流量特性
旋转盘腔
验算标定
篦齿封严
aero-engine
air system
flow characters
rotating disc cavity
calibration of calculation
labyrinth seal
