Volume 35 Issue 6
Jun.  2020
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XU Dachuan, LONG Yanzhi, LI Yudong. Experiment of extremely low wind velocity measurement based on laser Doppler[J]. Journal of Aerospace Power, 2020, 35(6): 1228-1237. doi: 10.13224/j.cnki.jasp.2020.06.013
Citation: XU Dachuan, LONG Yanzhi, LI Yudong. Experiment of extremely low wind velocity measurement based on laser Doppler[J]. Journal of Aerospace Power, 2020, 35(6): 1228-1237. doi: 10.13224/j.cnki.jasp.2020.06.013

Experiment of extremely low wind velocity measurement based on laser Doppler

doi: 10.13224/j.cnki.jasp.2020.06.013
  • Received Date: 2019-11-05
  • Publish Date: 2020-06-28
  • The principles of laser Doppler effect and telemetry were introduced, and the requirement for the size of aerosol particles was analyzed. A low wind velocity measurement system was established, and through which the measurement accuracy and influence of installation angle were analyzed. The experiments of rotary table, linear guideway and wind tunnel were carried out. The results verified the analysis and proved that the measurement accuracy was better than 001 m/s by experimental data. The measurement system can obtain stable and reliable signal when the medium in wind tunnel was conventional air, and the measurement results were very close to the high-performance instrument.

     

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