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为解决节流通风的航空发动机轴承腔的腔压难以计算的问题,考虑节流孔处通风介质可压缩性,结合某典型节流通风轴承腔的实例,分析了节流通风的发动机轴承腔通风气体流动的特点,提出了其腔压计算方法.通过实例计算,结果表明:计算值与试验值的绝对误差较小,结果满足滑油系统与空气系统联合计算的工程需要.该计算方法可为节流通风的航空发动机轴承腔腔压计算提供参考.
In order to solve the difficult calculation of the cavity pressure in the throttle-aero engine bearing cavity, considering the compressibility of the vent medium at the throttle orifice and combining with the example of a typical throttle ventilation bearing cavity, the throttle-ventilated engine bearing cavity ventilation Gas flow, the calculation method of cavity pressure is put forward.According to the example calculation, the results show that the absolute error between the calculated value and the experimental value is small, and the result meets the engineering requirement of the joint calculation of oil system and air system.The calculation method can be Throttle ventilated aeroengine cavity pressure calculation for reference.