舰载机起落架弹射冲击试验研究

Research on the Catapulting Impact of Carrier-Based Aircraft Landing Gear

舰载机在弹射起飞时,由于弹射器的拖拽及发动机的推力作用,先后经历牵制杆释放、弹射滑跑以及弹射突伸等弹射冲击过程,弹射过程使得起落架在垂向及航向产生较大的振动响应,对飞机的操纵性及起落架的结构都会造成较大的影响。为研究起落架在弹射过程的动态响应特性,本文提出了一种舰载机起落架弹射冲击试验方案,在逆航向加载牵制载荷、在航向加载弹射牵引载荷以模拟真实的弹射冲击过程,在垂直方向通过仿升系统提供仿升载荷模拟真实飞机所受升力,最终完成舰载机起落架弹射冲击试验系统的搭建与调试,对起落架弹射冲击过程的动态响应进行研究与分析。

When the carrier-based aircraft is catapulted, due to the drag of the catapult and the thrust of the engine, the nose landing gear will go through the release of pin rod, catapulting run, and catapulting sudden-extension. The catapulting impact makes the landing gear have great vibration response in vertical and heading directions, which will have a great influence on the maneuverability of flight and the structure of landing gear. In order to study the dynamic response characteristics of landing gear during catapulting, a catapulting impact test scheme of landing gear is presented. In this paper, the pinning load is loaded in the reverse direction, and the catapulting load is loaded in the heading direction to simulate the catapulting impact process. In the vertical direction, the simulated lift is provided to simulate the lift of the real aircraft. Finally the construction and debugging of the landing gear catapulting impact test system is completed, and the dynamic response of the landing gear catapulting impact process in studied and analyzed.