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Performance of Partially Fluorinated Polyimide Insulation for Aerospace ApplicationsPolyimide has been used extensively as the primary wiring insulation in commercial planes, military aircraft, and space vehicles due to its low weight, high service temperature, and good dielectric strength. New failure modes, however, have been associated with the use of polyimide because of the susceptibility of the insulation to pyrolization and arc tracking. A new wiring construction utilizing partially fluorinated polyimide insulation has been tested and compared with the standard military polyimide wire. Electrical properties which were investigated include AC corona inception and extinction voltages (sea level and 60,000 feet), time/current to smoke, and wire fusing time. The two constructions were also characterized in terms of their mechanical properties including abrasion resistance, dynamic cut through, and notch propagation. These test efforts and the results obtained are presented and discussed.
Document ID
19950026252
Document Type
Contractor Report (CR)
Authors
Hammoud, Ahmad N. (NYMA, Inc. Brook Park, OH, United States)
Stavnes, Mark W. (NYMA, Inc. Brook Park, OH, United States)
Ide, James R. (McDonnell-Douglas Aerospace Saint Louis, MO., United States)
Muegge, ED (McDonnell-Douglas Aerospace Saint Louis, MO., United States)
Date Acquired
September 6, 2013
Publication Date
August 1, 1995
Subject Category
SPACECRAFT PROPULSION AND POWER
Report/Patent Number
E-9820
NASA-CR-198372
NAS 1.26:198372
Funding Number(s)
CONTRACT_GRANT: NAS1-18580
PROJECT: RTOP 297-50-00
CONTRACT_GRANT: NAS3-27186
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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