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为了揭示螺旋桨滑流的发展规律和滑流对飞机各部件的干扰机理 ,很有必要精确测量滑流区不同截面的流动参数 ,研究滑流对飞机各部件表面压力的影响。本文介绍了在4m× 3m风洞应用该风洞配备的空间流态测量与显示系统 ,对某运输机螺旋桨滑流流经的空间区域多个截面的流动参数以及滑流对飞机机翼流场的影响进行了测量和研究。研究结果表明 ,螺旋桨滑流对飞机特别是机翼流场有明显影响 ;滑流区的空间流场测量与显示特别有助于对滑流的发展规律和滑流对飞机各部件干扰机理的研究
In order to reveal the rule of propeller slipstream and the disturbance mechanism of slipstream to the various components of the airplane, it is necessary to accurately measure the flow parameters in different sections of the slipstream and to study the effect of slipstream on the surface pressure of the aircraft components. This paper introduces the application of the space flow measurement and display system in the wind tunnel of 4m × 3m. The flow parameters of the cross-section of a transport aircraft propeller slipstream and the flow field of the slipstream on the wing flow field Impact was measured and studied. The results show that the propeller slipstream has a significant effect on the flow field of the aircraft, especially in the wing. The measurement and display of the flow field in the slipstream area is especially helpful for the development of slipstream and the disturbance mechanism of slipstream to the aircraft components