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Volume 38 Issue 7
Jul.  2012
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Journal of Beijing University of Aeronautics and Astronautics  > 2012  >  (7): 957-961.
Zhang Yanshun, Wang Yue. New method of continuous well trajectory measurement[J]. Journal of Beijing University of Aeronautics and Astronautics, 2010, 36(2): 210-213. (in Chinese)
Citation: Liu Peiqing, Ma Lichuan, Duan Zhongzhe, et al. Study and verification on similarity theory for propellers of stratospheric airships[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, (7): 957-961. (in Chinese)
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Study and verification on similarity theory for propellers of stratospheric airships

  • 1.

    School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Near Space Vehicle Research Centre, China Academy of Space Technology, Beijing 100094, China

  • Received Date: 09 Jun 2011
  • Publish Date: 30 Jul 2012
    Abstract
  • According to similarity theory of propellers, equal Reynolds number and equal advanced ratio similarity was selected as a group of similarity criterion combination. The effect of different density on the propeller similarity criterion was investigated by using numerical simulation. The chosen similarity criterion and correctness of applicability were verified. The relevant test results obtained by using the ground wind tunnel test on the scaled propeller model and the numerical simulation results of the stratosphere propellers were compared and analyzed. The results show that the nondimensional aerodynamic character curves of propellers at different altitudes are nearly agreement with each other. And the experimental results in ground wind tunnel is corresponding to the results of numerical simulations. It means that the air density influences little of propeller similarity parameters. So that, the scaled model experiment of propeller for stratospheric airships in ground wind tunnel is feasible according to equal Reynolds number and advanced ratio similarity, and provides reference basis for the wind tunnel test of propellers in stratosphere.

     

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    • References(10)
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