A wind tunnel test device based on sonic boom test technology

Abstract

The invention discloses a wind tunnel test device based on sonic boom test technology, comprising an external balance, a test model, a support device and an angle of attack bracket for connecting the support device, the external balance is a nested structure, It includes a front-end moment element using a single-column cantilever rectangular beam structure and a rear-end force element using two sets of mutually perpendicular multi-column rectangular beam element structures. The support device includes a position adjustment device, a strut connected to the position adjustment device, A transfer rod coaxially connected with the end of the rod, the other end of the transfer rod is connected to an external balance, and the external balance is connected to the test model; the external balance of the present invention exceeds the force and moment of the traditional balance The range of the load ratio, its structure breaks through the support method of using the traditional internal balance and a separate support mechanism for testing, and it is first applied in the wind tunnel test of the sonic boom test technology. Third, it has good practicability and promotion value.

Description

technical field [0001] The invention relates to the field of wind tunnel tests, in particular to a wind tunnel test device based on sonic boom test technology, which is suitable for sonic boom measurement wind tunnel tests, and is used to realize the support and wind resistance of various attack angle ranges and different relative position test states. Hole test measurements. Background technique [0002] At present, the sonic boom wind tunnel test technology is very difficult, mainly facing five key technical problems, including high-fidelity model processing, high-precision test system construction, reduction of wind tunnel flow field distortion effects, support interference and boundary layer effects minimization, etc. . The development of sonic boom wind tunnel test technology for more than 60 years is the arduous process of gradually overcoming the above technical problems. After years of research and testing abroad, rich experience has been accumulated, and single-poi...

AI Technical Summary

Problems solved by technology

The development of sonic boom wind tunnel test technology for more than 60 years is the arduous process of gradually overcoming the above technical problems. After years of research and testing abroad, rich experience has been accumulated, and single-point measurement, multi-point measurement and large-scale measurement of sonic boom signals have been developed. The three-generation test technology for scale measurement has the traditional sonic boom and subwoofer wind tunnel test technology; however, domestic research on sonic boom is not much, and the research work is not systematic, and mainly focuses on the prediction and conceptual design of sonic boom signals On the other hand, the depth and breadth of research on the design and testing of subwoofers are far from enough

Especially for the low-boom design of supersonic aircraft, there are almost no considerations about weight, balance, and low-speed take-off, and there is even a lack of flight verification, so the reliability of the design needs to be verified; The tests are all in the stage of exploration and research, and a reliable test platform has not yet been formed

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