Structure Design of Remote Sensing Camera Based on Silicon Carbide 3D Printing

With the continuous maturity of 3D printing technology, it is gradually being applied in the aerospace field. The 3D printing process breaks through the constraints of traditional mechanical processing and provides a new design approach for the structure design of space remote sensing cameras. While meeting the structural strength and stiffness of remote sensing cameras, it can achieve integrated design of multiple parts, high lightweighting rate of parts, and high stability of camera. The article first introduces the characteristics of 3D printing technology and structure design methods for 3D printing; Afterwards, the integrated structure design of the space remote sensing camera was completed using silicon carbide as the raw material; Finally, finite element simulation analysis of remote sensing cameras was carried out under various working conditions. The first order frequency of the remote sensing camera was 72.8 Hz, and the maximum translation of the mirror under gravity and 10 ℃ temperature fields was 0.012 mm, and the maximum deflection angle was 0.8″. This met the requirements of optical system design indicators and verified that the remote sensing camera has good mechanical and thermal stability. After physical mechanical vibration test verification, it meets the design results.