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兵工学报 ›› 1997, Vol. 18 ›› Issue (1): 89-92.

• 研究简报 • 上一篇    下一篇

尾支杆对超音速弹丸底压测量的影响

谭俊杰、王福华、张可忠、徐琴   

  1. 南京理工大学,江苏南京,210094
  • 收稿日期:1996-03-01 修回日期:1996-12-01 上线日期:2014-12-25
  • 通讯作者: 谭俊杰

The Effect of Tail Sting on the Base Pressure Measurement at Supersonic Velocities

Tan Junjie, Wang Fuhua ,Zhang Kezhong, et al.   

  1. Nanjing Universify of Science & Technology,Nanjing, 210094
  • Received:1996-03-01 Revised:1996-12-01 Online:2014-12-25
  • Contact: Tan Junjie

摘要: 普通弹丸的底阻约占弹丸总阻的l/3。因此,准确测量底阻是准确测定弹丸总阻的关键。在超音速风洞中进行测力实验时,模型底部大多用一根天平支杆将模型支撑在风洞中。由于尾支杆的存在,使得模型底部流动发生畸变,引起底阻测量的不准确。本文介绍了天平尾支杆和模型船尾角对超音速弹丸底压测量的影响。研究表明,尾支杆直径从小到大变化时,底压经历了一个由大到小,再由小到大的过程 | 在一定的范围内船尾角起到提高底压的作用。

关键词: 尾支杆 , 超音速 , 底部压力

Abstract: Presents the effect of tail sting and the angle of boat tail on the base pressure of a projectile in flight at supersonic velocities. The base pressure goes through a process of reduction and then an increase when the relative diameter of the sting changes from 0 to I. The angle of boat tail tends to increase the base pressure when the angle of boat tail is within the critical angle of separation.

Key words: tail sting , supersonics , base pressure