Modular Thermal Control Architecture for Modular Spacecraft

Abstract

Development of modular spacecraft requires modularization of interfaces between modules as well as the functions of the modules themselves. Although many of the functions and interfaces of a spacecraft are already well adapted to modularization, the traditional thermal control architecture is not. The thermal control system is the most significant hurdle to modularization yet to be overcome. This paper provides an overview of the issues related to creating a modular thermal control subsystem and how this last major hurdle can be overcome. Principles of product architecture and modularity are used to define the functional elements, interfaces, and physical components and develop a modular thermal control architecture. A means of decoupling the thermal control subsystem, perhaps the most difficult characteristic necessary to implement, is presented. The process of developing the architecture is summarized with illustrations.