Volume 30 Issue 6
Jun.  2015
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Article Navigation >  Journal of Aerospace Power  > 2015  >  30(6): 1400-1406
WANG De-peng, TIAN Fang-chao, ZHANG Qi-fan, TAN Hui-jun, BU Huan-xian, LI Guang-sheng. Effect of entry shape on starting characteristics of inward turning inlets[J]. Journal of Aerospace Power, 2015, 30(6): 1400-1406. doi: 10.13224/j.cnki.jasp.2015.06.015
Citation: WANG De-peng, TIAN Fang-chao, ZHANG Qi-fan, TAN Hui-jun, BU Huan-xian, LI Guang-sheng. Effect of entry shape on starting characteristics of inward turning inlets[J]. Journal of Aerospace Power, 2015, 30(6): 1400-1406. doi: 10.13224/j.cnki.jasp.2015.06.015
shu

Effect of entry shape on starting characteristics of inward turning inlets

doi: 10.13224/j.cnki.jasp.2015.06.015

  • 1. Jiangsu Province Key Laboratory of Aerospace Power system, College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China;

  • 3. Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China

  • Received Date: 2013-12-24
  • Publish Date: 2015-06-28
    Abstract
  • In order to investigate the low Mach number starting characteristics of hypersonic inward turning inlets, four kinds of inlets with rectangular, square, elliptical and round entry shapes were designed. Simulation method was used to investigate their unstarting/restarting flow-field structures. Results show that, the inlets with rectangular and elliptical entry shape have similar restarting Mach number while the inlet with square and round entry shape have the similar and higher restarting Mach number. Further analysis shows that the difference of restarting capability may be caused by the different aspect ratios of the entry shape, therefore, a series of inward turning inlets with different aspect ratios were designed, and their unstarting/restarting flow-field structures were investigated. Results show that the aspect ratio of the entry plays an important role in inlet starting characteristics of inward turning inlet. The larger aspect ratio means the easier inlet restarts.

     

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