A Gravity Balance Method for Ground Test of Heavy Spaceborne Deployable Antenna
A ground test, gravity balance technology, applied in the space field, can solve the problems of the influence of the antenna deployment can not be ignored, the antenna structure size is large, the rigidity is limited, etc., to achieve the effect of the best project practicability, simple calculation and convenient operation
Active Publication Date: 2020-01-07
SHANGHAI AEROSPACE SYST ENG INST
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Problems solved by technology
However, for heavy space-borne deployable antennas, the size of the antenna structure is large and the mass is heavy. The mass of the antenna is the main weight of the whole star. At the same time, the star or star simulator as the antenna installation base has limited rigidity. The antenna installation base The influence of stiffness on antenna deployment cannot be ignored. During the antenna gravity unloading process, the posture of the antenna mounting base will also change accordingly, which will affect the unloading effect and ultimately affect the deployment performance of the antenna.
[0007] At present, there is no explanation or report for the technology similar to the present invention in the field of space technology, and no similar information has been collected at home and abroad.
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that the drawings are in simplified form and use imprecise scales, and are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present invention.
[0031] Such as figure 1 As shown, the ground test gravity balance system of the heavy space-borne deployable antenna of the present invention includes: antenna 1, antenna mounting base 2, air flotation device 3, accuracy measurement device 4, attitude adjustment device 5, and measurement reference 6.
[0032] The antenna 1 is a satellite main load antenna with a weight of 300kg; the antenna mounting base 2 is a satellite star body, and the antenna 1 and the antenna mounting base 2 are connected by a hinge and a pressing mechanism;
[0033] ...
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A theodolite is used to measure the change amount of the attitude of a heavy spaceborne deployable antenna during ground test before and after gravity unloading, the change is reversely preset to obtain the initial pose of the antenna under the stiffness condition of a mounting base, and gravity unloading is carried out to balance the gravity in order to eliminate the influences of the stiffness of the antenna mounting base on the gravity balance of the antenna, so the weightless environment condition of the on-orbit deployment is well simulated, and the deploying performance of the antenna is guaranteed. The ground test gravity balance method of the heavy spaceborne deployable antenna belongs to the technical field of space, and is provided to solve a problem that no effective on-orbit weightless environment condition simulation of the gravity unloading, caused by the influences of the stiffness of the mounting base on the heavy spaceborne deployable antenna during the ground test, finally affects the deploying performance of the antenna.
Description
technical field [0001] The invention relates to the field of space technology, in particular to a gravity balance method applied to the ground test of a heavy space-borne deployable antenna of a satellite. Background technique [0002] Limited by the space size of the launch vehicle, large heavy-duty antennas applied to satellites generally adopt the method of being folded and folded on the satellite platform during launch, and unfolded in orbit after entering orbit. In order to ensure the reliability of the antenna deployment in orbit, the antenna deployment test must be carried out on the ground. However, the satellite is in a zero-gravity state in orbit, while the ground is in a gravity environment. Therefore, the gravity unloading technology is a difficult problem that must be overcome in the ground test of spacecraft products. [0003] At present, there are two most commonly used gravity unloading technologies at home and abroad, one is the suspension type and the oth...
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Login to View More IPC IPC(8): G01C1/02
CPCG01C1/02
Inventor 陈晓峰王浩程庆清邢健梁宝柱周鑫李建营
Owner SHANGHAI AEROSPACE SYST ENG INST