Operational environments for electrical power wiring on NASA space systems

Details Operational environments for electrical power wiring on NASA space systems Operational environments for electrical power wiring on NASA space systems

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994stin...9436951s&link_type=abstract

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Aerospace Systems, Earth Orbital Environments, Electric Wire, Electrical Insulation, Lunar Environment, Mars Environment, Degradation, Electric Arcs, Environmental Tests, Failure Modes, Outgassing, Radiation Effects, Reliability, Safety Factors, Temperature Effects

Scientific paper

Electrical wiring systems are used extensively on NASA space systems for power management and distribution, control and command, and data transmission. The reliability of these systems when exposed to the harsh environments of space is very critical to mission success and crew safety. Failures have been reported both on the ground and in flight due to arc tracking in the wiring harnesses, made possible by insulation degradation. This report was written as part of a NASA Office of Safety and Mission Assurance (Code Q) program to identify and characterize wiring systems in terms of their potential use in aerospace vehicles. The goal of the program is to provide the information and guidance needed to develop and qualify reliable, safe, lightweight wiring systems, which are resistant to arc tracking and suitable for use in space power applications. This report identifies the environments in which NASA spacecraft will operate, and determines the specific NASA testing requirements. A summary of related test programs is also given in this report. This data will be valuable to spacecraft designers in determining the best wiring constructions for the various NASA applications.

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