某发动机前支点回油泵典型故障分析及控制措施

Typical Failure Analysis and Control Measures of the Front Pivot Scavenging Pump of an Aircraft Engine

飞机发动机前支点回油泵是保证飞机安全飞行的重要零部件,在运行中一旦出现故障,就可能威胁机上乘客的生命安全。某飞机发动机前支点回油泵在运行中常常出现回油泵齿轮与泵壳体刮磨损伤;回油泵卡滞导致传动轴断裂;回油泵齿轮螺旋头断裂等故障,本文旨在通过有效的故障维修控制措施降低前支点回油泵故障率,最大限度规避飞机安全风险,保证飞机安全飞行。

The front pivot scavenging pump of aircraft engine is an important part to ensure the flight safety of the aircraft. Once the fault occurs in the running, the life safety of the passengers will be threatened. In the running, the front pivot scavenging pump of an aircraft engine often appears the scraped finish damage of the scavenging pump gears and pump case, the fracture of shaft caused by the clamping stagnation of scavenging pump, the spiral head breakage of scavenging pump gears and so on. The purpose of this paper is to reduce the failure rate of the front pivot scavenging pump by the effective control and maintenance measures to avoid the safety risk of aircraft and ensure the flight safety of aircraft.