飞机外挂物投放低速风洞试验技术研究

Experimental Research of Jettison of Aircraft External Store in Low Speed Wind Tunnel

采用动力相似法对飞机外挂物投放风洞试验技术进行研究 ,总结了试验中的关键技术。介绍了投放模型的设计加工、试验设备、试验过程及试验结果的后期处理的情况。首次采用了先进的高速数码摄像系统对外挂物投放轨迹进行拍摄研究和判读 ,运用多次曝光技术 ,试验照片清晰 ,试验结果符合规律 。

Jettison test of external store is important for aircraft. It can guide the pilot to throw the external store correctly and to ensure safety of the aircraft. The jettison research of aircraft external stores with dynamic simulation theory is made and the key techniques in the tests summarized. The model design and manufacture,test process and experimental facilities are introduced. The high speed digital pickup cameras are first used in the jettison trajectory research for external stores. The exposure technique is also used in the tests many times and the photos are very clear. Experimental results show that self designed jettison control system works very well.