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Simulation and experimental research on trans-media vehicle water-entry motion characteristics at low speed

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  • Jian Yang
  • Yongli Li
  • Jinfu Feng
  • Junhua Hu
  • An Liu

Abstract

The motion characteristics of trans-media vehicles during the water-entry process were explored in this study in an effort to obtain the optimal water-entry condition of the vehicle for developing a novel, single control strategy integrating underwater non-control and in-air control. A water-entry dynamics model is established by combining the water-entry motion characteristics of the vehicle in uncontrolled conditions at low speed with time-varying parameters (e.g. buoyancy, added mass). A water-entry experiment is designed to confirm the effectiveness of the established model. After that, by comparing the experimental results with the simulated results, the model is further modified to more accurately reflect water-entry motion. The change laws of the vehicle’s attitude and position during the water-entry process are also obtained by analyzing the simulation of the modified model under different velocity, angle, and angle of attack conditions. The results presented here have guiding significance for the future realization of reaching the stable underwater navigation state of the vehicle after water-entry process.

Suggested Citation

  • Jian Yang & Yongli Li & Jinfu Feng & Junhua Hu & An Liu, 2017. "Simulation and experimental research on trans-media vehicle water-entry motion characteristics at low speed," PLOS ONE, Public Library of Science, vol. 12(5), pages 1-29, May.
    • Handle: RePEc:plo:pone00:0178461
    DOI: 10.1371/journal.pone.0178461
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