International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada / NASA/Marshall Space Flight Center (MSFC) is continually looking for methods to reduce cost
and schedule while keeping the quality of work high. MSFC is NASA’s lead center for space
transportation and microgravity research. When supporting NASA’s programs several decisions
concerning the avionics system must be made. Usually many trade studies must be conducted to
determine the best ways to meet the customer’s requirements. When deciding the flight data
system, one of the first trade studies normally conducted is the determination of the data bus
architecture. The schedule, cost, reliability, and environments are some of the factors that are
reviewed in the determination of the data bus architecture. Based on the studies, the data bus
architecture could result in a proprietary data bus or a commercial data bus. The cost factor
usually removes the proprietary data bus from consideration. The commercial data bus
architecture’s range from Versa Module Euro card (VME) to Compact PCI to STD 32 to PC 104.
If cost, schedule and size are prime factors, VME is usually not considered. If the prime factors
are cost, schedule, and size then Compact PCI, STD 32 and PC 104 are the choices for the data bus
architecture.
MSFC’s center director has funded a study from his discretionary fund to determine an optimal
low cost commercial data bus architecture. The goal of the study is to functionally and
environmentally test Compact PCI, STD 32 and PC 104 data bus architectures. This paper will
summarize the results of the data bus architecture study.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/606463 |
| Date | 10 1900 |
| Creators | Crawford, Kevin, Johnson, Martin |
| Contributors | NASA |
| Publisher | International Foundation for Telemetering |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | text, Proceedings |
| Rights | Copyright © International Foundation for Telemetering |
| Relation | http://www.telemetry.org/ |
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