Wind tunnel test technique on high speed weapon delivery from internal weapons bay
XUE Fei;JIN Xin;WANG Yuchao;YANG Yinong;China Academy of Aerospace Aerodynamics;AVIC Chengdu Aircraft Design & Research Institute;
The investigation of high speed weapon delivery from internal weapons bay is conducted in a 0.6m×0.6msubtransonic and supersonic wind tunnel.The double-perspective technology,brighter optical path system and image analysis system of six degrees of freedom(6DOF)are developed to obtain the models' images and the aerodynamic parameters at a high speed separation from carriers' internal weapons bay.The test technology can adjust the velocity and angular velocity independently,and ensure the speed error≤5%,angular velocity error≤10%,and repetition rate≥95%.The data analysis is reliable because the test images are clearer due to using the brighter light source,and the precision of attack angle≤0.2°.The optical paths are reasonable designed,and the double-perspective technology guarantees that the models' movement path and 6DOF motion data are acquired.The new technology has been tested in a sub-transonic and supersonic wind tunnel,and has completed a complex multi-body separation test.The parameters are at or better than the existing technical indicators.The technology has served for the model test for many times,and meets the requirements of the wind tunnel test and research on the high speed separation from carriers' internal weapons bay.
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