A NASA program to develop a high performance (high rate, high capacity) rewriteable optical disk revorder for spaceflight applications is presented. An expandable, adaptable system concept is proposed based on disk drive modules and a modular controller. Drive performance goals are 10 gigabyte capacity, 300 megabits/second transfer rate, 10-12 corrected bit error rate, and 150 millisecond access time. The preliminary design for an expandable controller is presented. System goals are up to 160 gigabyte capacity at up to 1.8 gigabits per second rate with concurrent I/O, asynchronous data transfer, and 2 to 5 year operating life in orbit. Projected system environment and operational scenarios based on Polar Orbiting Platform applications are discussed. Current status and future plans are presented.
Spaceflight optical disk recorder development
Entwicklung eines optischen Plattenspeichers für den Raumflug
1991
41 Seiten, 18 Quellen
(+31 Bilds.)
Aufsatz (Konferenz)
Englisch
Spaceflight optical disk recorder development
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