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基于横向二次射流的水下推力矢量方法

耿令波 胡志强 林扬 衣瑞文 杨翊

耿令波, 胡志强, 林扬, 衣瑞文, 杨翊. 基于横向二次射流的水下推力矢量方法[J]. 航空动力学报, 2017, 32(8): 1922-1932. doi: 10.13224/j.cnki.jasp.2017.08.016
引用本文: 耿令波, 胡志强, 林扬, 衣瑞文, 杨翊. 基于横向二次射流的水下推力矢量方法[J]. 航空动力学报, 2017, 32(8): 1922-1932. doi: 10.13224/j.cnki.jasp.2017.08.016
Underwater thrust vectoring method based on cross second flow[J]. Journal of Aerospace Power, 2017, 32(8): 1922-1932. doi: 10.13224/j.cnki.jasp.2017.08.016
Citation: Underwater thrust vectoring method based on cross second flow[J]. Journal of Aerospace Power, 2017, 32(8): 1922-1932. doi: 10.13224/j.cnki.jasp.2017.08.016

基于横向二次射流的水下推力矢量方法

doi: 10.13224/j.cnki.jasp.2017.08.016
基金项目: 国家重点研发计划课题(2016YFC0301601)

Underwater thrust vectoring method based on cross second flow

  • 摘要: 提出一种基于横向二次射流的水下推力矢量技术,通过二次射流的横向速度场诱导主流发生偏转,建立了推力矢量偏角与流速偏角的数学关系,证明了通过主流偏转实现推力矢量偏转的有效性。通过数值计算方法分析了不同二次射流深度、不同二次射流/主流体积比及不同二次射流/主流速度比条件下主流偏转角度变化。结果显示:随着二次射流深度的增加,主流受到壁面阻碍作用增强,因而偏转角度减小。随着二次射流/主流体积比的减小,出口负压区所占比例减小,主流偏转角度增加,且当体积比减小到一定值后,负压影响可以忽略,主流不再随体积比而变化。主流偏转角度随速度比增加而增加,且在速度比一定的条件下,速度数值的变化对主流偏转没有影响。设计了一种主流为圆形射流的水下矢量推进器,对其数值分析结果揭示:当位于射流中剖面同侧的二次射流全部作动时,主流可以取得最大的偏转角度,且主流的偏转方向可以通过使不同的二次射流组合处于作动状态进行控制。

     

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出版历程
  • 收稿日期:  2016-07-26
  • 刊出日期:  2017-08-28

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