This paper describes research performed to determine the ignition hazard presented by small fragments of superfine steel wool that may contact energized direct current wires in aircraft fuel tanks. Several different methods of shorting a circuit with steel wool were explored. An ignitable mixture of hydrogen, oxygen, and argon, calibrated to have a minimum ignition energy of 200 microjoules, was used as an ignition detection technique. The electrical currents at the ignition threshold were recorded to determine safe maximum allowable current limits for fuel tank electronics. The lowest current found to ignite the flammable mixture was 99 milliamps (mA); the lowest current found to ignite a steel wool wad in air only was 45 mA.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Intrinsically Safe Current Limit Study for Aircraft Fuel Tank Electronics


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    General Aviation Technology Conference & Exhibition ; 2006



    Publication date :

    2006-08-30




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Intrinsically safe explosion-proof oil tank nozzle

    WU YIQIU / FU BOWEN / WU FAN | European Patent Office | 2020

    Free access

    Intrinsically safe explosion-proof oil tank nozzle

    WU BOWEN / ZANG ZHI / WU FAN | European Patent Office | 2020

    Free access


    INTRINSICALLY SAFE CABLE TENSIONING DEVICE

    CALLAGHAN CHRISTOPHER / JUILLET CHRISTOPHER A | European Patent Office | 2021

    Free access

    INTRINSICALLY SAFE UNMANNED AERIAL VEHICLES

    CHIRDON DAVID / COTTEN STEVEN A / HEDRICK KEVIN et al. | European Patent Office | 2023

    Free access