Studies on the Dynamics of a Supercavitating Vehicle

DOI

10.2991/icmse-15.2015.71How to use a DOI?

Keywords

Supercavitating vehicle; Vehicle trajectory; Stability; Numerical simulation

Abstract

Due to imperfect water entry, a high speed supercavitating vehicle, while moving in the forward direction, rotatesinside the cavity. This rotation leads to a series of impacts between the vehicle body and the cavity wall. The impacts affect the trajectory as well as the stability of motion of the vehicle. The present paper discusses the dynamics of such a vehicle. Equations of motion of the vehicle are developed for two distinct cases of motion. Case I: the vehicle moves in the cavity without interaction with the cavity wall, and Case II: the impacts on the cavity wall. The equations are found to be coupled and nonlinear. A simple model based on the concepts of flow planes is used to determine the forces acting on the vehicle. The results show that despite the impacts with the cavity wall, the vehicle nearly follows a straight line path. The frequency of the impacts between the vehicle tail and cavity boundary increases initially, reaches a maximum, and then decreases gradually.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fu-Qiang Ma
AU  - Yan-Sen Liu
AU  - Yang Wang
PY  - 2015/12
DA  - 2015/12
TI  - Studies on the Dynamics of a Supercavitating Vehicle
BT  - Proceedings of the 2015 6th International Conference on Manufacturing Science and Engineering
PB  - Atlantis Press
SP  - 388
EP  - 393
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmse-15.2015.71
DO  - 10.2991/icmse-15.2015.71
ID  - Ma2015/12
ER  -