Structural analysis of the optical payload for a remote-sensing low-Earth orbit CubeSat

Low-Earth orbit (LEO) and better ground sampling distance (GSD) have been a trend for earth observation satellites. A compact optical remote sensing imager (RSI) is required accordingly from a systematic point of view. Therefore, a pathfinding project has been raised to develop an optomechanical structure for this RSI. The project is primarily led by the National Cheng Kung University in collaboration with the Taiwan Instrument Research Institute. This article mainly reports the structural analysis of optomechanical structure, including modal analysis, sine vibration, and random vibration. Furthermore, this report establishes a heritage design and analysis procedure for future projects.