Abstract
Aiming at the problem of water-brake recovery for double-track rocket sled, an open water-brake method based on U-groove structure was proposed and the structural model was established. Under the condition of commonly used requirements, the brake effect was evaluated through the classic fluid mechanics theory, and the brake efficiency and safety were studied using two analytical methods of fluid-structure interaction and statics. The results showed that the open water-brake method was feasible in principle. Compared with the water bucket, the open brake device had the advantages of simple structure and convenient processing, and the phenomenon of water blockage would not occur and affect the brae efficiency and test safety. At the same brake speed, the open brake device could generate higher brake force. Recommendations for follow-up work were given before the open water-brake method was officially put into use.
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