Support technique in centre of minitype reflector

The working temperature of space remote sensor reflector is 18±15 ℃ in this article,and the reflector in the complex working condition needs to meet the design requirements.The choices of the reflector materials and the supporting structure materials were introduced.The supporting way and the lightweight structure of the reflector and so on were discussed.According to the design principles of the flexible supporting structure of the reflector and using CAD/CAE engineering software for analysis and optimization,a kind of reflector flexible structure of centre support was designed by means of finite element method(FEM).Surface deformation less than λ/10(PV) and λ/40(RMS)(λ=632.8 nm)in this temperature range.Finally,the changes of reflector surface deformation and the dynamic characteristic of reflector component simulators were tested by the mechanical environment test.The conclusion is proved that the structure of the reflector meets the demand of the optical design.