• ISSN 0258-2724
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Volume 26 Issue 5
Oct.  2013
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Journal of Southwest Jiaotong University  > 2013  >  26(5): 921-927.
LIU Xiaobo, TU Junchao, DENG Beibei. Response Analysis of Wing-Mounted Engine Rotor System under Atmospheric Turbulence[J]. Journal of Southwest Jiaotong University, 2013, 26(5): 921-927. doi: 10.3969/j.issn.0258-2724.2013.05.022
Citation: LIU Xiaobo, TU Junchao, DENG Beibei. Response Analysis of Wing-Mounted Engine Rotor System under Atmospheric Turbulence[J]. Journal of Southwest Jiaotong University, 2013, 26(5): 921-927. doi: 10.3969/j.issn.0258-2724.2013.05.022
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Response Analysis of Wing-Mounted Engine Rotor System under Atmospheric Turbulence

doi: 10.3969/j.issn.0258-2724.2013.05.022
  • Received Date: 10 Nov 2012
  • Publish Date: 25 Oct 2013
    Abstract
  • In order to study the phenomenon that wing-mounted engines working at high altitudes could be affected by the atmospheric turbulence, a dynamic model of wing-mounted engine rotor system under atmospheric turbulence was established using the theories of wing aeroelastics and rotor dynamics and adopting the Dryden turbulence model as the atmospheric speed model. To solve the dynamic model, the pseudo-excitation method was used for numerical calculation. The results show that the power spectral density (PSD) of the displacement response at each turntables station in the rotor system has almost a similar variation trend to the PSD of the atmospheric turbulence speed, but the displacement response intensity peak occurs at the natural frequency. The displacement response intensity caused by atmospheric turbulence decreases with the angular frequency increasing when the angular frequency is larger than 100 rad/s, and the effect of rotor system characteristics on the displacement response intensity cannot be neglected.

     

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