基于CAD2AME的飞机液压系统流阻计算方法

飞机液压系统包含泵源系统、管路系统、附件和用户系统,飞机管路系统是飞机泵源和用户之间的纽带,液压管路流阻特性决定了用户系统入口的压力和流量,影响用户动静态响应性能,特别是对一些伺服作动系统。传统流阻特性计算方法主要针对稳态工况计算,难以实现动态响应计算,且对工作人员要求高、计算工作量大。随着全三维设计应用于飞机液压管路系统设计制造,为基于计算机的流阻特性仿真分析提供了可能。本文介绍和对比了三种计算方法,选取了较优的CAD2AME方法对某飞机局部液压管路系统流阻特性进行仿真分析,证明该方法可快速准确的对飞机液压管路进行分析。

Calculation method of flow resistance of aircraft hydraulic system based on CAD2AME

The aircraft hydraulic system includes a pump source system, piping system, accessories and user system.The aircraft piping system is the link between the aircraft pump source and the user.The flow resistance characteristics of the hydraulic pipeline determine the pressure at the inlet of the user system and affect the user. Affect the user"s dynamic and static response performance, especially for some servo actuation systems. The traditional calculation method of flow resistance characteristics is mainly aimed at the calculation of steady-state conditions, it is difficult to achieve dynamic response calculation, and it has high requirements on staff and large calculation workload. With the application of full three-dimensional design to the design and manufacture of aircraft hydraulic piping systems, it has provided the possibility of computer-based simulation analysis of flow resistance characteristics. This paper introduces and compares three calculation methods, and selects the better CAD2AME method to simulate and analyze the flow resistance characteristics of an aircraft"s local hydraulic pipeline system. It is proved that this method can quickly and accurately analyze the aircraft hydraulic pipeline.