Modular Micro-Satellite Bus

"Physical Sciences Inc. (PSI) and MicroSat Systems Inc. (MSI) propose concepts for revolutionary small spacecraft that are physically modular, technologically reconfigurable, and can be integrated with payloads within 24 hours. These capabilities will beachieved by (a) developing multifunctional subsystems that integrate newly emerging space technologies, (b) employing miniaturized spacecraft subsystems, (c) emulating PC-inspired architecture, inventory scheme for subsystems, and standard spacecraftconfigurations, and (d) using a Web-based methodology to facilitate rapid spacecraft/payload integration and test in the field. This approach, particularly (a) and (b), will yield lightweight and low-power microsatellites, maximizing payload mass fractionand power. Utilizing autonomous subsystems and onboard processing will free up spacecraft processor resources for payloads and minimize ground communications bandwidth. In Phase I, we will develop and analyze architecture concepts for modular,reconfigurable spacecraft and demonstrate the feasibility of an interface subsystem concept crucial to rapid payload integration. Detailed spacecraft design(s) will be developed, with two critical prototype subsystems built and qualification tested inPhase II. A complete spacecraft configuration will be built and space-qualified in Phase III. Our team synergistically complements PSI's expertise in multifunctional space technologies and MSI's expe