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Development, Verification, and Validation of a Thermal Model for Determining Current Derating Design Limits of Aerospace Wires and Wire Bundles
- Aerospace Standard
- ARP7987
- Issued
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
The thermal modeling guidelines and best practices provided in this document are applicable to powered aerospace vehicle wires and wire bundles in thermal environments ranging from -65 to +260 °C (-85 to +500 °F) and pressures ranging from sea level to space vacuum. Currently the ARP only considers steady state and direct current conditions. The effects of wiring terminations and connectors are not addressed. Both can significantly impact the overall current derating and safety margins for a wiring system.
Rationale
This SAE Aerospace Recommended Practice (ARP) documents the basic guidelines for the development, verification, and validation of a thermal analytical model for determining ampacity and current derating limits of aerospace wires and wire bundles. The document will be updated as new models are developed and new information becomes available.
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Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Table 1 | Wire sizes, wire bundle sizes and insulation types that were used to validate the NASA thermal wire bundle model | |
Table A1 | Lab measured resistance for ten-foot silver plated high strength copper alloy conductor in an oil bath at selected temperatures | |
Table A2 | A comparison of measured and calculated resistances |
Issuing Committee
AE-8A Elec Wiring and Fiber Optic Interconnect Sys Install
SAE Committee AE-8A, Electrical Wiring and Fiber Optic Interconnect Systems Installation, is associated with those activities directed by the Aerospace Electronics and Electrical Systems Division of SAE and SAE Committee AE-8, Aerospace Electrical/Electronic Distribution Systems which relate to installation and maintenance of electrical wire systems and associated hardware standards and specifications.
Reference
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