在飞行器进行姿态调整的过程中,液压油箱也随之转动,液面发生变化。若使用固定吸油口的形式吸油,容易发生吸空,对元件和设备的性能产生很大影响,甚至发生事故。为解决吸空问题,提出了一种淹没式吸油口的方法,即利用“水平面”的特点,浮球和柔性吸油管相结合的方式吸油。并对该方法进行了可靠性的研究,对比了单吸油口和双油吸口的油管受力。研究发现双吸油口吸油方式更加稳定有效。该方法的提出将对变液面液压油箱吸油提供了参考作用。 During the attitude adjustment of the aircraft, the hydraulic tank also rotates and the liquid level changes. If the use of fixed suction port in the form of oil absorption, prone to suction, the performance of components and equipment have a significant impact, or even accidents. In order to solve the problem of air suction, a method of submerged oil suction port is proposed, which utilizes the characteristic of “horizontal plane”, and the combination of float ball and flexible suction pipe absorbs oil. The reliability of the method was studied, and the stress on the oil pipes of single oil suction port and double oil suction port was compared. The study found that double suction port oil absorption more stable and effective. The proposed method will change the level of hydraulic oil tank provides a reference.