本SAE航空航天标准（AS）规定了军用飞机液压系统中使用的扁平截止压力补偿可变输出液压泵的设计、施工、验收和鉴定测试的一般要求。它还提供了采购规范的参数，以便与本AS一起使用。本AS定义的液压泵通常用于符合AS5440和MIL-H-8891（如适用）的飞机液压系统。注:1。液压泵可以在输入驱动中包含离合器等功能，本标准不包括这些功能。2.商用飞机液压泵应使用AS595。3.本文件不适用于电动静液压执行器（EHA）应用中的液压泵。

This SAE Aerospace Standard (AS) establishes the general requirements for the design, construction, acceptance, and qualification testing of flat cut-off pressure compensated, variable delivery hydraulic pumps used in military aircraft hydraulic systems. It also provides parameters for a Procurement Specification to be used in conjunction with this AS.The hydraulic pumps defined by this AS are generally for use in aircraft hydraulic systems conforming to and as defined in AS5440 and MIL-H-8891, as applicable.NOTES:1. Hydraulic pumps may incorporate features such as a clutch in the input drive, which will not be covered by this standard.2. AS595 should be used for commercial aircraft hydraulic pumps.3. This document should not be used for hydraulic pumps in Electro-Hydrostatic Actuator applications (EHAs).