Geostationary orbit satellite with thermal deformation isolation function of load and platform

Abstract

The invention relates to a geostationary orbit satellite with a thermal deformation isolation function of a load and platform. The geostationary orbit satellite comprises a satellite platform, a loadcabin and the load, the load cabin is composed of three side plates and an antenna main reflecting surface support truss, the antenna main reflecting surface support truss is arranged on a top plate of the satellite platform, the load comprises an antenna main reflecting surface, an antenna main reflecting surface back frame, antenna secondary and main reflecting surface expansion arms, an antennalarge secondary and main reflecting surface, an antenna small secondary and main reflecting surface and a quasi-optics system, the antenna large secondary and main reflecting surface and the antennasmall secondary and main reflecting surface are arranged on the antenna secondary and main reflecting surface expansion arms, the antenna main reflecting surface is arranged on the top plate of the satellite platform through an unlocking separation device on the antenna main reflecting surface support truss, and the quasi-optics system is connected with the antenna main reflecting surface back frame by adopting a titanium alloy lug piece. The geostationary orbit satellite solves the technical problems that an existing satellite cannot meet the high resolution requirement of load detection, andthe thermal deformation between the in-orbit satellite platform and the load is intercoupled.

Description

Technical field [0001] The invention relates to the technical field of aerospace satellites, and in particular to a geostationary orbit satellite whose 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 economy, 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 technology, Wang Zhiguo et al. described a connection through a flexible hinge in "Research on Thermal Deformation Isolation Technology of Satellite High-precision Load Installation Platform" (Spacecraft Engineering, Volume 26, Issue 2, April 2017) Thermal deformation isolation technology that connects and separates the load mounting plate. In response to the requirements of China's high-resolution satellites for the control ...

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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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