Accession Number : ADA114026
Title : Feasibility Study of a 270V DC Flat Cable Aircraft Electrical Power Distribution System.
Descriptive Note : Final rept. Dec 80-Jan 82,
Corporate Author : BOEING AEROSPACE CO SEATTLE WA
Personal Author(s) : Musga,M J ; Rinehart,R J
PDF Url : ADA114026
Report Date : Jan 1982
Pagination or Media Count : 272
Abstract : This report documents the efforts of a one man-year feasibility study to evaluate the usage of flat conductors in place of conventional round wires for a 270 volt direct current aircraft power distribution system. This study consisted of designing electrically equivalent power distribution harnesses in flat conductor configurations for a currently operational military aircraft. Harness designs were established for installation in aircraft airframes which are: (1) All metal, or (2) All composite, or (3) a mixture of both. Flat cables have greater surface areas for heat transfer allowing higher current densities and therefore lighter weight conductors, than with round wires. Flat cables are less susceptible to electromagnetic effects. However, these positive factors are partially offset by installation and maintenance difficulties. This study concludes that the extent of these difficulties can be adequately limited with appropriate modification to present installation and maintenance practices. A comparative analysis of the flat and the round conductor power distribution harnesses was made for weight, cost, maintenance and reliability. The knowledge gained from the design and comparative analysis phases was used to generate design criteria for flat power cable harnesses and to identify and prioritize flat cable harness components and associated production tooling which require development.
Descriptors : *Electric cables, *Aircraft equipment, *Electric power transmission, *Harnesses, Heat transfer, Electromagnetic radiation, Production, Direct current, Installation, Composite materials, Density, Lightning, Airframes, Voltage, Maintenance, Surfaces, Tools, Reliability, Currents, Metals, Aircraft
Subject Categories : Aircraft
Electric Power Production and Distribution
Distribution Statement : APPROVED FOR PUBLIC RELEASE