本文件规定了适用于压力高达35 000 kPa（5 000 psi）的飞机液压系统的恒排量液压马达的一般要求。 本文件包括一次和二次功能电机（见第4条）；但是，不包括具有内部旋转角度限制的致动器和低速电机。 本文件将与每种应用的特定详细规范一起使用。

This document establishes the general requirements for constant displacement hydraulic motors, suitable for use in aircraft hydraulic systems at pressures up to 35 000 kPa (5 000 psi). Primary and secondary function motors (see Clause 4) are covered in this document; however, actuators with internal rotation angle limits and low-speed motors are not covered. This document is to be used in conjunction with the detail specification that is particular to each application.