FUEL TANK FOR AN AIRCRAFT, AN AIRCRAFT AND A KIT OF PARTS

Unsafe electric energies can exist in aircraft fuel tanks as a result of static build-up or induced currents from lightning strikes. The invention provides an aircraft having a ground circuit 19 and including a fuel tank having a fuel probe circuit having its own ground circuit. Multiple discharge p...

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Bibliographische Detailangaben
Hauptverfasser:	LEY, Kim Michael, TICHBORNE, Franklin George
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING COSMONAUTICS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS HANDLING THIN OR FILAMENTARY MATERIAL MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME NATURALLY-OCCURRING ELECTRICITY PACKAGES PACKAGING ELEMENTS PACKING PARACHUTES PERFORMING OPERATIONS PHYSICS STATIC ELECTRICITY STORING TESTING TRANSPORTING
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Beschreibung
Zusammenfassung:	Unsafe electric energies can exist in aircraft fuel tanks as a result of static build-up or induced currents from lightning strikes. The invention provides an aircraft having a ground circuit 19 and including a fuel tank having a fuel probe circuit having its own ground circuit. Multiple discharge paths allow the safe discharge of electricity from the tank before it reaches levels where an arc, spark or other electric discharge, able to ignite fuel in the tank, could occur. The discharge paths all pass via a conductive foam having a relatively high impedance that allow static bleed, but does not significantly increase the risk of currents induced by lightning reaching levels at which an ignition-causing electrical discharge might occur. The foam is securely bonded to both the aircraft ground circuit and the fuel probe ground, the bonds having a large area of surface-to-surface contact.