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Coupled modeling and analysis of radiometer effect and residual gas damping on proof mass in purely gravitational orbit 被引量:9
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作者 LIU HongWei WANG ZhaoKui ZHANG YuLin 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第4期894-902,共9页
Spacecrafts free of all but gravitational forces are important in precision navigation,gravity field measurement and basic scientific research.The Inner-formation Flying System,one kind of spacecrafts free of all but ... Spacecrafts free of all but gravitational forces are important in precision navigation,gravity field measurement and basic scientific research.The Inner-formation Flying System,one kind of spacecrafts free of all but gravitational forces,is used for gravitational field measurement with high precision.Restraining the interfering factors on the inner-satellite is one of the keys to gravitational field measurement.Radiometer effect and residual gas damping are both interfering forces on the inner-satellite caused by gas molecules.By analyzing the mechanism of the two forces,a coupled model for radiometer effect and residual gas damping was established,which contained the coupling term and reflected the actual force of gas molecules on the inner-satellite.The simulation results showed the coupling property of radiometer effect and residual gas damping:The actual force of gas molecules is directly proportional to the average pressure in the cavity and the largest cross-sectional area of the inner-satellite,but is inversely proportional to the square root of the average temperature in the cavity. 展开更多
关键词 purely gravitational orbit proof mass radiometer effect residual gas damping coupled modeling
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Analysis of residual gas disturbance on the inner satellite of Inner Formation Flying System 被引量:1
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作者 GU ZhenFeng WANG ZhaoKui ZHANG YuLin 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第9期2511-2517,共7页
The Inner Formation Flying System (IFFS) consisting of an freely flying in the shield cavity can construct a pure gravity outer satellite and an inner satellite which is a sphere proof mass orbit to precisely detect... The Inner Formation Flying System (IFFS) consisting of an freely flying in the shield cavity can construct a pure gravity outer satellite and an inner satellite which is a sphere proof mass orbit to precisely detect the earth gravity field. The residual gas in the cavity is a significant disturbance source due to the temperature inhomogeneity and relative motion of the inner satellite. The expressions of the disturbance forces were derived based on the property of rarefied gas, including the radiometer effect and the damping force. According to the current design of IFFS, heat transfer analysis of the cavity and the inner satellite was carried out, and the surface temperature distribution of the cavity and the inner satellite was given. The relative motion of the inner satellite was obtained from the formation control simulation of IFFS. Then the residual gas disturbance was calculated. The disturbance acceleration acting on the inner satellite due to the radiometer effect was on the order of 10^-11 m s^-2 and the damping acceleration was on the order of 10^-15 m s^-2. 展开更多
关键词 Inner Formation Flying System inner satellite residual gas radiometer effect residual gas damping
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