超声速风洞试验模型启动载荷抑制技术

Starting Load Suppressing Technology of Supersonic Wind Tunnel Test Model

为解决超声速风洞启动/关车时,启动载荷过大易损坏天平和模型的问题,设计一种平板装置抑制启动载荷方法。详细阐述试验装置的结构和流程,用飞行器模型进行抑制效果试验研究,并分别比较模型受到启动载荷随轴向位置、法向位置和M的变化。研究结果表明:该装置在减小马赫数2.0~4.0时模型的启动载荷和抖动幅度,对升力、俯仰力矩、阻力的抑制效果较明显。

In order to solve the problem that the balance and model are easily damaged due to the excessive starting load when the supersonic wind tunnel is started or shut down,a method of suppressing the starting load with a flat device is designed.The structure and process of the test device are described in detail.Use aircraft model to carry out suppression effect test.And the changes of the starting load of the model with axial position,normal position and M are compared respectively.The results show that the device can reduce the starting load and vibration amplitude of the model at Mach 2.0-4.0,and has obvious suppression effect on lift,pitching moment and resistance.