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Analysis of radiometer effect on proof mass in purely gravitational orbit

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Abstract

Spacecrafts with the pure gravity environment are of great significance in precision navigation, gravity field measurement for celestial bodies, and basic physics experiments. The radiometer effect is one of the important interfering factors on the proof mass in a purely gravitational orbit. For the gravity field measurement system based on the inner-formation flying, the relationship between the radiometer effect on the innersatellite and the system parameters is studied by analytical and numerical methods. An approximate function of the radiometer effect suitable for the engineering computation and the correction factor are obtained. The analytic results show that the radiometer effect on the inner-satellite is proportional to the average pressure while inversely proportional to the average temperature in the outer-satellite cavity. The radiometer effect increases with the temperature difference in the cavity, and its minimum exists when the cavity radius increases. When the minimum of the radiometer effect arrives, the ratio of the cavity radius to the inner-satellite radius is 1.189 4. This constant is determined by the spherical cavity configuration and independent of the temperature and pressure distributions. When the ratio of the cavity radius to the inner-satellite radius is more than 10, it is believed that the cavity is large enough, the radiometer effect is approximately proportional to the square of the inner-satellite radius, and the influence of the outer-satellite cavity radius on the radiometer effect can be ignored.

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Authors and Affiliations

  1. Institute of Aerospace and Material Engineering, National University of Defense Technology, Changsha, 410073, P. R. China

    Hong-wei Liu  (刘红卫) & Yu-lin Zhang  (张育林)

  2. School of Aerospace, Tsinghua University, Beijing, 100084, P. R. China

    Zhao-kui Wang  (王兆魁) & Yu-lin Zhang  (张育林)

Authors
  1. Hong-wei Liu  (刘红卫)
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  2. Zhao-kui Wang  (王兆魁)
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  3. Yu-lin Zhang  (张育林)
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Corresponding author

Correspondence to Hong-wei Liu  (刘红卫).

Additional information

Project supported by the National Natural Science Foundation of China (No. 11002076) and the National Defence Preresearch Foundation of China (No. 51320010201)

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Liu, Hw., Wang, Zk. & Zhang, Yl. Analysis of radiometer effect on proof mass in purely gravitational orbit. Appl. Math. Mech.-Engl. Ed. 33, 583–592 (2012). https://doi.org/10.1007/s10483-012-1572-8

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  • DOI: https://doi.org/10.1007/s10483-012-1572-8

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Chinese Library Classification

2010 Mathematics Subject Classification

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