综合载荷环境下高超声速飞行器结构多场联合强度试验技术

doi:10.7527/S1000-6893.2018.22326

Abstract

Abstract: Aimed at the urgent requirements of the combined load test for current hypersonic vehicle structures, a multi-load combined test design considering aerodynamic force, high temperature, acoustic, and mechanical vibration is carried out. First, a multi-system integration method is proposed, and the decoupling method and the control strategy are proposed for multi-load combined loadings. Then, based on the progressive wave tube, a multi-load combined platform is built. Moreover, the key factors that affect the performance of the platform are analyzed and the corresponding solutions are provided. Finally, a multi-field test combined with the aerodynamic force/high temperature/acoustic/mechanical vibration of a rudder surface component is completed based on this test platform, obtaining the time-domain and frequency-domain characteristics of the responses such as strain, acceleration and displacement. The test results show that the response level of the structure in a combined load environment is relatively high and the structure is more prone to damage. The feasibility and effectiveness of the multi-load combined test technique are verified through this test, indicating a powerful technical support for the verification of the ground strength of the hypersonic vehicle structure in a complex load environment.

Key words: hypersonic, multiple combined loadings, structural strength test, thermal acoustic, dynamic response

CLC Number:

V216.5

ZOU Xuefeng, GUO Dingwen, PAN Kai, QU Chao, TAO Yongqiang, ZHANG Xudong. Test technique for multi-load combined strength of hypersonic vehicle structure under complex loading environment[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(12): 222326-222326.

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Test technique for multi-load combined strength of hypersonic vehicle structure under complex loading environment

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