›› 2014, Vol. 46 ›› Issue (4): 636-641.doi: 10.6052/0459-1879-13-419

• 研究简报 • 上一篇    下一篇

减阻杆气动阻尼研究

冉景洪1, 刘子强2, 胡静2, 赵振军1, 权晓波1   

  1. 1. 北京宇航系统工程研究所, 北京 100076;
    2. 中国航天空气动力技术研究院, 北京 100074
  • 收稿日期:2014-01-30 修回日期:2014-04-08 出版日期:2014-07-23 发布日期:2014-07-24
  • 作者简介:冉景洪,工程师,研究方向:气动弹性、空气动力学、水下推力矢量.Email:ranjhzhl@163.com

RESEARCH OF AERO-DAMPING FOR BLUNT WITH SPIKE

Ran Jinghong1, Liu Ziqiang2, Hu Jing2, Zhao Zhenjun1, Quan Xiaobo1   

  1. 1. Beijing Institute of Astronautical Systems Engineering 100076, China;
    2. China Academy of Aerospace Aerodynamics, Beijing 100074, China
  • Received:2014-01-30 Revised:2014-04-08 Online:2014-07-23 Published:2014-07-24

摘要: 基于模态数据和准定常理论,建立了减阻盘-杆-后体这一弹性结构的气动阻尼分析方法;通过刚性模型的动导数风洞试验获得气动阻尼以验证方法可靠性后,计算分析了减阻杆结构在指定工况的气动阻尼特性. 结果表明: 所建方法可用于减阻杆系统的气动阻尼计算;计算工况的气动阻尼值均为正值,对减阻杆系统的振动起抑制作用;存在产生负气动阻尼的影响因素,各项因素对气动阻尼影响的量值有所不同,有待进一步研究.

关键词: 减阻杆|模态分析|气动阻尼|动导数|准定常

Abstract: Basing on modal shape data, the aero-damping analysis method has been constructed with quasi-steady aerodynamics theory. The dynamic derivative experiments for a rigid model have been accomplished simultaneously for verification and validation of the present method. Then the computation of aero-damping and characteristics analysis have been carried out under the assigned conditions. It can be concluded that the method can be used for aero-damping analysis of spike, and all results are positive in research, which will repress the vibration of the system. There are some factors leading to negative aero-damping, and the factors have different contributions to the aero-damping values.

Key words: spike|modal analysis|aero-damping|dynamic derivative|quasi-steady aerodynamics

中图分类号: 

  • V211.47