Geostationary orbit satellite with payload isolated from platform thermal deformation

Abstract

The invention relates to a geostationary orbit satellite in the technical field of aerospace satellites, which isolates the load from the thermal deformation of the platform, including a satellite platform, a load compartment and a load. The surface support truss is installed on the top plate of the satellite platform, and the load includes the main reflector of the antenna, the back frame of the main reflector of the antenna, the extension arm of the sub-principal reflector of the antenna, the main reflector of the main sub-antenna, the small sub-main reflector of the antenna, and the quasi-optical system. The antenna main reflecting surface and the antenna small auxiliary reflecting surface are arranged on the extension arm of the antenna auxiliary reflecting surface, and the antenna main reflecting surface is installed on the top plate of the satellite platform through the unlocking separation device on the supporting truss of the antenna main reflecting surface , the quasi-optical system uses titanium alloy lugs to connect with the back frame of the main reflective surface of the antenna. The invention solves the problem that existing satellites cannot meet the high-resolution requirements of load detection, and at the same time solves the technical problem of mutual coupling of thermal deformation between the satellite platform on orbit and the load.

Description

technical field [0001] The invention relates to the technical field of aerospace satellites, in particular to a geostationary orbit satellite in which the load is isolated from the thermal deformation of the platform. Background technique [0002] With the rapid development of my country's aerospace technology and the continuous improvement of the national economic level, since geostationary orbit satellites can continuously observe the same area, the demand for geostationary orbit satellites is more urgent for ground applications. [0003] After searching the existing technologies, Wang Zhiguo et al. described a flexible hinge connection in "Research on Thermal Deformation Isolation Technology of Satellite High-precision Load Installation Platform" (Spacecraft Engineering, Vol. 26, No. 2, April 2017). The thermal deformation isolation technology that forms the connection and separation of the load mounting plate. In this paper, aiming at the control requirements of my coun...

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Problems solved by technology

[0005] Aiming at the defects of the prior art, the object of the present invention is to provide a geostationary satellite in which the load is isolated from the thermal deformation of the platform, so as to solve the problem that the existing satellite cannot meet the high-resolution requirements of load detection, and at the same time solve the problem between the satellite platform and the load in orbit. Technical Difficulties of Mutual Coupling of Thermal Deformation

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