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VACUUM ›› 2023, Vol. 60 ›› Issue (4): 75-79.doi: 10.13385/j.cnki.vacuum.2023.04.14

• Vacuum Acquisition System • Previous Articles     Next Articles

High Vacuum Maintaining Technology for Hemispherical Resonator Gyro

ZHANG Hong-bo, QU Tian-liang, WANG Peng   

  1. Huazhong Institute of Electro-Optics-Wuhan National Laboratory for Optoelectronics, Wuhan 430223, China
  • Received:2022-10-24 Online:2023-07-25 Published:2023-07-26

Abstract: The required vacuum of hemispherical resonator gyro inner cavity was confirmed by theoretic calculation, and the relation of vacuum of the inner cavity with increasing time was found according to the outgassing rate experimental test data. The appropriate getter was chosen, the absorbable capacity of getter was tested, and the equivalent outgassing rate of inner cavity with getter was measured. The test results indicate that the getter can meet the requirement of keeping high vacuum of hemispherical resonator gyro.

Key words: hemispherical resonator gyro, air damping, high vacuum, outgassing rate, getter

CLC Number:  TN248.1

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