某飞机液压柱塞泵失效机理分析

Failure Mechanism Analysis of an Aircraft Main Hydraulic Piston Pump

某飞机主液压系统出现压力下降告警,飞机着陆后检查,发现系统压力下降的原因是主液压系统的液压柱塞泵已失效。该文通过分解检查故障泵零组件,开展零组件设计、制造质量,零组件损伤痕迹,断口宏\微观以及磨损产物等分析,确认了故障液压泵的失效机理。

The pressure drop alarm arose in an aircraft main hydraulic system, and check after emergency landing, it was found that the hydraulic piston pump of the main hydraulic system was disabled and therefore gave rise the pressure drop. In this paper, the failure mechanism of the main hydraulic piston pump was analyzed by disassembling and checking the faulty pump components, analyzing damage trace, checking design/manufacture quality, fracture and also wear debris.