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| Trajectory stochastic characteristics analysis of supercavitation projectile with stochastic parameters |
| Received:June 28, 2009 Revised:April 08, 2010 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201101005 |
| KeyWord:stochastic parameters supercavitation projectile trajectory stochastic characteristics maximum entropy method |
| Author | Institution |
| 蒋运华 |
哈尔滨工程大学 航天工程系,哈尔滨 |
| 安伟光 |
哈尔滨工程大学 航天工程系,哈尔滨 |
| 周凌 |
哈尔滨工程大学 航天工程系,哈尔滨 |
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| Abstract: |
| The launching device and production process of supercavitation projectile own various uncertainty . Utilizing maximum entropy method, the influence of uncertainty to projectile trajectory was analyzed. The dynamic model of supercavitation projectile was introduced, and load characteristics of projectile and principle of stochastic parameters were analyzed. The simulation program of trajectory stochastic characteristics analysis of supercavitation projectile with stochastic parameters based on maximum entropy method was programmed, and a model was calculated. The results indicate that the influence of initial angular speed is the maximum and initial water depth is minimum in all stochastic parameters relating launching device, and the influence of deflection angle is the maximum and the angle of cavicator and projectile mass are minimum in all stochastic parameters relating production process. Moreover, when all stochastic parameters exist,the impact point isn’t normal distribution. Therefore, it’s necessary that the trajectory stochastic analysis should be implemented and reasonable distribution of impact point should be given before experiment study. |
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