Simulation analysis on trajectory stability of high-speed water entry at a small angle for disc-spinning body
<b>Objectives</b> This study focuses on the problem of the stability of high-speed water entry and puts forward a new disc-shaped configuration.<b>Methods</b> High-speed water entry at a small angle is simulated for a disc-spinning body and cusp revolution body using a 3D mod...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Editorial Office of Chinese Journal of Ship Research
2020-02-01
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| Series: | Zhongguo Jianchuan Yanjiu |
| Subjects: | |
| Online Access: | http://html.rhhz.net/ZGJCYJ/html/2020-1-113.htm |
| Summary: | <b>Objectives</b> This study focuses on the problem of the stability of high-speed water entry and puts forward a new disc-shaped configuration.<b>Methods</b> High-speed water entry at a small angle is simulated for a disc-spinning body and cusp revolution body using a 3D model based on a combination of Language structure mesh and Euler fluid mesh, and the collation method is carried out using the experimental results. A comparison of the two simulations at a 7o water entry angle and a speed of 405 m/s is then carried out to analyze stability. The stability of the disc-spinning body at different water entry angles is also studied using the simulation method.<b>Results</b> The results show that the cusp revolution body ricocheted from the surface of the water, while the disc-spinning body maintained a straight trajectory and remained stable during water entry at high speeds and a small angle. The disc-spinning body can also achieve a stable water entry trajectory at different angles with a very small deflective gap.<b>Conclusion</b> The results of this study can provide a new method for launching effective payloads to underwater targets with higher precision, stability and speed. |
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| ISSN: | 1673-3185 1673-3185 |