A command and data system for concurrent handling of multiple payloads

Abstract

A system concept to improve the state of practice in space-based payload support and provide data processing, command and telemetry, and friendly crew interface for Shuttle experiments is introduced. It is also designed to serve as a mission support system on the ground. A prototype of the system was developed in the laboratory and demonstrated in real time. It includes custom-made units such as the flight computer (MIL-STD-1750A), flat panel display, programmable decommutator, and command formatter. The system can also be used as a ground control and monitor station. The system software was modified to handle up to four payloads concurrently while maintaining isolation among them. The prototype system was demonstrated in multiple payload applications, including the orbital refueling system flown on the Shuttle. It was demonstrated that the effectiveness of the Shuttle system for handling and supporting payloads can be improved by streamlining the payload integration process by decoupling it from the Shuttle core avionics system, using advanced technologies for effective use by the Shuttle crew, and reducing and/or eliminating the need to develop payload-unique avionics.<>