本航空航天规范规定了无螺纹、柔性、导电、自粘结联轴器组件的要求，当安装在固定空腔套圈上时，该组件可提供柔性、载流连接，用于连接飞机燃料、通风和其他系统中的管道和部件。组装联轴节的目的是在飞机系统的使用寿命内，在合格制造商之间提供零部件的互换性。组装好的联轴节可在-65至+200°F的标称工作压力下使用（对于-08至-64为125 psig，对于-72至-88为30 psig）。本航空航天规范与之前组装联轴器的鉴定实践不同。之前的实践试图通过对一组联轴器组件进行一系列测试来验证这种类型的组装联轴器设计。 有多个测试序列，每个测试序列在不同的联轴器组件上进行。这些测试序列中的每一个都对联轴器组件的特定设计特征提出了挑战。预计没有一个联轴器组件能够经受住所有要求的测试。FAR 23.954、FAR 25.954和FAR 25.981认证要求确定了对高电流挠性液力偶合器的需求。联轴器总成不需要进行检查和维护，以在飞机寿命内保持电流能力。如果要在飞机寿命内保持载流能力，模拟组装联轴器所经历的在役磨损和损坏非常重要。本规范中的试验程序模拟了组装联轴器的最坏磨损和损坏情况。

This aerospace specification defines the requirements for a threadless, flexible, conductive, self-bonding coupling assembly which, when installed on fixed cavity ferrules, provides a flexible, current carrying connection for joining tubing and components in aircraft fuel, vent and other systems. The assembled coupling is designed to provide interchangeability of parts and components between qualified manufacturers for the service life of the aircraft system. The assembled coupling is for use from -65 to +200 °F at nominal operating pressures (125 psig for -08 through -64 and 30 psig for -72 through -88).This aerospace specification is a departure from prior qualification practices for assembled couplings. Prior practice sought to validate this type of assembled coupling design by conducting a sequence of tests on sets of coupling assemblies. There were multiple test sequences and each was conducted on a different set of coupling assemblies. Each of these test sequences challenged a particular design feature of the coupling assembly. No single coupling assembly was expected to survive all of the required tests.FAR 23.954, FAR 25.954 and FAR 25.981 certification requirements have identified the need for high-current capable flexible fluid couplings. The coupling assembly does not require inspection and maintenance to remain current capable for the life of the aircraft.It is important to simulate the in-service wear and damage experienced by the assembled coupling if it is to remain capable of carrying current for the life of the aircraft. The test procedures in this specification simulate a worst case wear and damage condition for the assembled couplings.