Rigid heat dissipation device for medium-and-small-caliber space reflector

Abstract

The invention relates to the technical field of space remote sensing, in particular to a rigid heat dissipation device for a medium-small-caliber space reflector. The device solves the problems of lowsystem rigidity and large deformation. The device comprises a bushing, a support cylinder and a back plate. A bonding cylindrical hole is formed in the back surface of the reflector body. The liningand the supporting cylinder are each of a cylindrical structure with an opening in one end. The outer cylindrical surface of the bushing is bonded with the bonding cylindrical hole. A threaded throughhole I is formed in the bottom surface of the bushing. An unthreaded hole I corresponding to the threaded through hole I is formed in the bottom surface of the supporting cylinder. The supporting cylinder is connected with the lining through the first threaded through hole and the first unthreaded hole, a flange is arranged on the cylinder wall of an opening of the supporting cylinder, a second threaded through hole is formed in the flange, a second unthreaded hole corresponding to the second threaded through hole is formed in the back plate, the back plate is connected with the supporting cylinder through the second threaded through hole and the second unthreaded hole, and an external connection installation part is arranged on the back plate. The purpose of reducing thermal deformationof the mirror body is achieved, the requirements for thermal stability and rigidity of the space reflector are considered, and it is guaranteed that the remote sensor has good imaging quality.

Description

technical field [0001] The invention relates to the technical field of space remote sensing, in particular to a rigid heat dissipation device for a small and medium diameter space mirror. Background technique [0002] The temperature of the working environment of the remote sensor cannot be kept constant during the stage of ground installation and on-orbit operation. The changing temperature field will cause thermal deformation of the space mirror, which will affect the surface shape accuracy of the mirror and reduce the imaging of the remote sensor. Quality; in order to adapt to the changing ambient temperature, the space reflector in the remote sensor generally adopts the heat dissipation structure. At present, the common heat dissipating structures are all "flexible structures". The method is to process easily deformable structures such as flexible grooves and spring sheets on the supporting parts of the reflector, so as to introduce flexible links into the reflector asse...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of requiring a heat dissipation device that takes into account the thermal stability and rigidity requirements of the space mirror, the present invention provides a rigid heat dissipation device for small and medium-diameter space mirrors

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