Modular architecture design and evaluation of large modular spacecraft

Spacecraft in orbit usually encounter problems such as high maintenance costs, the aging of infrastructures, and fuel limitation. The modular design of the spacecraft is an effective mean which could improve the spacecraft's ability to accept on-orbit maintenance. Modular design for large satellites and in-orbit maintenance have very important and realistic research value. The characteristics of traditional satellites are summarized and the working characteristics of each functional system are analyzed, including components classification, installation location, spatial directivity requirements, and volume ratio. At the same time, the bearing characteristics and structure categories of the structural subsystem are analyzed. Finally, architecture design is carried out in combination with specific engineering data.