Aircraft Electrical Wet-Wire Arc Tracking

Cahill, Patricia; Dailey, James H.

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Aircraft Electrical Wet-Wire Arc Tracking

1988-08-01
By Cahill, Patricia ; Dailey, James H.

File Language:

English

Details

Creators:

Cahill, Patricia ; Dailey, James H.
Corporate Creators:

United States. Department of Transportation. Federal Aviation Administration. Technical Center
Subject/TRT Terms:

Aircraft Carbonization Electrical Conductivity Electric Wire Fault Location Fire Wire
Publication/ Report Number:

DOT/FAA/CT-88/4
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

Final Report
Corporate Publisher:

United States. Department of Transportation. Federal Aviation Administration. William J. Hughes Technical Center
Abstract:

Electrical wet-wire arc tracking is a phenomenon that has been known for many years. This can occur when leakage currents on a wet insulation surface are great enough to vaporize the moisture, resulting in the formation of dry spots. These dry spots offer a high amount of resistance! to current flow. In turn, an induced voltage will develop across these spots and result in the occurrence of small surface discharges. Initially, these discharges will appear as scintillations at the insulation surface. These discharges produce highly localized temperatures on the order of 10000 Centigrade (C). Temperatures of this magnitude will cause thermal degradation of the insulation material, the nature of which depends on the insulation material used.
Format:

PDF
Collection(s):

FAA Fire Safety
Main Document Checksum:

urn:sha-512:f56561239ee26b2962d79a4afb78eaefdb8726085b0b3100c1b337656ec7608c4da974d6e893674bafe7734d596b7c1a760dfcf23c786354e81cddaac768568f
Download URL:

https://rosap.ntl.bts.gov/view/dot/92948/dot_92948_DS1.pdf
File Type:

[PDF - 651.20 KB ]

File Language:

English

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