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首页> 外文期刊>Acta astronautica >Compensation of gravitational attraction disturbance to pure gravity orbit for Inner Formation Flying System
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Compensation of gravitational attraction disturbance to pure gravity orbit for Inner Formation Flying System

机译：内层飞行系统重力吸引扰动对纯重力轨道的补偿

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摘要

The Inner Formation Flying System (IFFS) consisting of an outer satellite and an inner satellite which is a solid sphere proof mass freely flying in the shield cavity can construct a pure gravity orbit to precisely measure the earth gravity field. The gravitational attraction on the inner satellite due to the outer satellite is a significant disturbance source to the pure gravity orbit and is required to be limited to 10~(-11) ms~(-2) order. However, the gravitational disturbance force was on 10~(-9)ms~(-2) order actually and must be reduced by dedicated compensation mass blocks. The region of relative motion of the inner satellite about its nominal position is within 1 cm in dimension, which raises the complexity of the compensation blocks design. The iterative design strategy of the compensation blocks based on reducing the gravitational attraction at the nominal position of the inner satellite is presented, aiming to guarantee the gravitational force in the relative motion region within requirements after the compensation. The compensation blocks are designed according to the current status of IFFS, and the gravitational disturbance force in the region is reduced to 10~(-11) ms~(-2) order with minimized adding mass.
机译：由外部卫星和内部卫星组成的内部编队飞行系统（IFFS）是可在盾构腔中自由飞行的实心球体质量，可以构造一个纯重力轨道来精确测量地球重力场。由于外在卫星引起的内在卫星上的引力引力是对纯重力轨道的重要扰动源，要求将其限制在10〜（-11）ms〜（-2）级。但是，重力扰动力实际上在10〜（-9）ms〜（-2）量级，必须通过专用的补偿质量块来减小。内部卫星围绕其标称位置的相对运动区域的尺寸在1厘米以内，这增加了补偿模块设计的复杂性。提出了基于减小内卫星标称位置引力吸引力的补偿块的迭代设计策略，旨在保证相对运动区域内的引力在补偿后的要求范围内。根据IFFS的当前状态设计补偿块，将区域的重力扰动减小到10〜（-11）ms〜（-2）级，增加的质量最小。

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