Stability analysis and test verification of rocket sled operation

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (21) : 180-186.

YAN Huadong, ZHOU Xuewen, LIU Jin, WANG Yutao

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Abstract

To support the transition of rocket sled test speed from supersonic to hypersonic, it is necessary to break through key technologies such as boundary control in the design of hypersonic rocket sled systems under the coupling of multiple factors. Starting from the analysis of the main causes of instability in hypersonic rocket sled tests, from the perspective of structure and system, strength criteria for the shoe and rail and ultimate impact velocity criteria are constructed to constrain the design boundary. Then, the influence of shoe-rail clearance and track irregularity on the stable operation of the rocket sled is studied through the sled rail coupling dynamic response calculation method, to determine the operational stability of the rocket sled system on the track and guide the optimization of the experimental system. Finally, experimental verification was conducted on the optimized system, and it was found that the system operates normally on the track and meets the design requirements. The results indicate that the criteria for stable operation of hypersonic rocket sleds can guide the design of hypersonic rocket sled systems and have certain engineering application value.

Key words

hypersonic velocity / rocket sled / stability / criterion

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YAN Huadong, ZHOU Xuewen, LIU Jin, WANG Yutao. Stability analysis and test verification of rocket sled operation[J]. Journal of Vibration and Shock, 2024, 43(21): 180-186

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