VERIFICATION OF OPTICAL PAYLOAD CFRP STRUCTURE FOR SATELLITE THROUGH ANALYSIS AND SPACE QUALIFICATION TEST

摘要

This paper describes the development results of optical telescope CFRP structure with analysis and qualification test. Structural analysis and space qualification tests were carried out with launch and in-orbit environments in order to verify the optical payload CFRP structure for satellite with optical, structural and dimensional stability point of view. And structural stability is verified by coupon tests with statistical analysis for calculation Margin of Safety (MoS). Structural analysis with design load and modal analysis in order to prevent the dynamic coupling were performed. And theimo-elastic analysis with qualification temperature from on-orbit thermal analysis results was performed to verify the structural stability. After performed the analytical verification, space qualification tests with structural model(SM) were carried out with dynamic test (sin and random vibration test & sin burst (design load) test) and thermal cycle test for on-orbit structural stability. Optical performance (WFE: Wave front Error) with optics mounted on CFRP Bezel, structural stability with modal survey and 3-dimensional measurement with CMM were performed before and after the space qualification tests.