A Novel Optimal Bus Design Method for Modular Spacecraft.

The modular bus can provide many standardized interfaces which is meaning for rapid responsiveness and still provide some flexibility to match the needs of the payload. However, modularity causes some problems, such as price, inefficiency and testing costs. So creating the modular spacecraft bus for rapid responsive space needs to consider many elements. In this paper, a constrained optimization equation is created according to the demand of rapid responsive spacecraft bus for the highest efficiency and total revenue but satisfies the demand of the lead-time and reliability the system. The optimal design of rapid responsive spacecraft bus is obtained through solving the constrained optimization equation. The optimal design contains the optimal lead-time, reliability, the test strategy, modularity, mass efficiency, volume efficiency, power efficiency, and total revenue. Simulation indicates that the proposed model scheme is effective to design the reliable, rapid responsive, and standard bus, and the scheme is meaningful for invest optimization.