Volume 37 Issue 2
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YAN Siqi, LI Benwei, WANG Yonghua, ZHANG Yun, ZHOU Pengyu. Position rule of turboshaft engine surge based on bench test[J]. Journal of Aerospace Power, 2022, 37(2): 263-273. doi: 10.13224/j.cnki.jasp.20210085
Citation: YAN Siqi, LI Benwei, WANG Yonghua, ZHANG Yun, ZHOU Pengyu. Position rule of turboshaft engine surge based on bench test[J]. Journal of Aerospace Power, 2022, 37(2): 263-273. doi: 10.13224/j.cnki.jasp.20210085
shu

Position rule of turboshaft engine surge based on bench test

doi: 10.13224/j.cnki.jasp.20210085
  • 1.

    Aeronautical Foundation Institute，Naval Aviation University，Yantai Shandong 264001，China

  • 2.

    Unit 92326，People's Liberation Army，Zhanjiang Guangdong 524005，China

  • Received Date: 2021-02-25
  • Publish Date: 2022-02-28
    Abstract
  • In order to investigate the surge position of turboshaft engine，the pressure signals of air inlet，axial compressor tip，axial compressor outlet and centrifugal compressor outlet were collected and analyzed during the bench surge test.Continuous wavelet time-frequency transform was used to extract the characteristics of the pressure signal.The wavelet coefficients were used as the characteristics of the surge signal，and the threshold value was 10% of the maximum value of the wavelet coefficients.The results showed that the axial flow compressor of a turboshaft engine surged earlier than the centrifugal compressor，and the surge was transmitted from the inlet to the centrifugal compressor in the axial direction，and also along the rotor blade rotation in the circumferential direction.When the real-time surge monitoring was carried out for a certain type of engine，the surge can be detected earlier by monitoring the axial compressor than by monitoring the centrifugal compressor.In the subsequent modification design of a certain type of turboshaft engine，the surge margin of the axial compressor can be increased to improve the anti-surge ability of the whole engine.

     

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