Volume 29 Issue 11
Nov.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  29(11): 2659-2664
MI Bai-gang, ZHAN Hao, WANG Ban. Numerical simulation of dynamic derivatives based on rigid moving mesh technique[J]. Journal of Aerospace Power, 2014, 29(11): 2659-2664. doi: 10.13224/j.cnki.jasp.2014.11.016
Citation: MI Bai-gang, ZHAN Hao, WANG Ban. Numerical simulation of dynamic derivatives based on rigid moving mesh technique[J]. Journal of Aerospace Power, 2014, 29(11): 2659-2664. doi: 10.13224/j.cnki.jasp.2014.11.016
shu

Numerical simulation of dynamic derivatives based on rigid moving mesh technique

doi: 10.13224/j.cnki.jasp.2014.11.016

  • School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China

  • Received Date: 2013-07-27
  • Publish Date: 2014-11-28
    Abstract
  • Based on rigid moving mesh technique, a unsteady method of simulating each pitching dynamic derivative was developed. Firstly, the pitching combined dynamic derivative was calculated by using the method of small amplitude pitching forced oscillation; then the lag of wash derivative could also be obtained by using the small amplitude plunging forced oscillation method; finally the pitching damping derivative was calculated by the difference between the combined dynamic derivative and the lag of wash derivative. The international dynamic derivative standard model Finner missile was taken as an example to testify the methods, the calculation error of pitching combined dynamic derivative is 2.76%, and the lag of wash derivative calculated is 11.5% of pitching damping derivative, in agreenment well with the references. The research shows that the methods of separating dynamic derivatives have been proved reliable and useful in engineering, and these methods can also be used in lateral and directional dynamic derivative analysis.

     

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