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A scientific study of the problems of digital engineering for space flight systems,
with a view to their practical solution.


RTX2010 and other FORTH Processors

 


Command and Data Handling Processor

James A. Perschy, JHU/APL

10th Annual AIAA/ Utah State University Conference on Small Satellites

jperschy.pdf

Abstract
This command and data handling processor is designed to perform mission critical functions for the NEAR and ACE spacecraft. For both missions the processor formats telemetry and executes real-time, delayed and autonomy-rule commands. For the ACE mission the processor also performs spin stabilized attitude control. The design is based on the Harris RTX2010 microprocessor and the UTMC SÁmmit MIL-STD-1553 bus controller. Fault tolerant features added include error detection, correction and write protection memory. Components have been selected to minimize the possibility of charged particle induced upset. The processor’s architecture and mechanical design are described. The hardware and software test and validation methods are given.


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Last Revised: January 03, 2003
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