飞机典型液压管路全状态考核试验方法研究

目的 提出一种飞机典型液压管路全状态考核试验方法，同时考虑液压管路内部高压高速液压油流动和外部振动环境耦合产生的响应。方法 从飞机典型舱位液压管路系统中抽取出液压管路及其支持结构试验件，模拟出液压管路安装的机体支持刚度，通过液压回路组件模拟飞机液压管路内液压油的流动环境，以及通过振动台组件模拟飞机舱位振动环境这两个液压管路疲劳寿命的主要影响要素。结果 通过设计的试验能同时施加液压管路疲劳寿命主要影响因素环境。结论 针对目前飞机液压管路地面模拟试验环境和空中飞行状态有较大差异，文中提出了一种飞机典型液压管路全状态考核试验方法，通过该试验可为液压管路减振优化设计提供试验依据。

Test Method of the Full State Examination of the Typical Hydraulic Pipeline of Aircraft

The work aims to propose a full state examination method for the typical hydraulic pipeline of aircraft and consider the coupling response of high-pressure and high-speed flow of hydraulic oil in the hydraulic pipeline and the external vibration environment. Firstly, the specimens of hydraulic pipeline and its support structure were extracted from the hydraulic pipeline system of the typical cabin to simulate the support stiffness of aircraft structure for installing hydraulic pipeline. Then, the hydraulic loop module was used to simulate the flowing environment of hydraulic oil in the hydraulic pipeline and the vibration test module was adopted to simulate the main factors influencing the fatigue life of two hydraulic pipelines in the aircraft cabin and the vibration environment. The main factors influencing the fatigue life of hydraulic pipeline could be applied at the same time through the designed test. For the big difference between the ground test and the actual flight state of aircraft hydraulic pipeline, a full state examination and test method for the typical hydraulic pipeline of aircraft is proposed and the test provides an important basis for the vibration reduction optimization design of the aircraft hydraulic pipeline.