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1. WO2021206884 - FAULT-TOLERANT FUEL ISOLATION FROM ENGINE FIREBAY

Publication Number WO/2021/206884
Publication Date 14.10.2021
International Application No. PCT/US2021/022732
International Filing Date 17.03.2021
IPC
A62C 3/08 2006.1
AHUMAN NECESSITIES
62LIFE-SAVING; FIRE-FIGHTING
CFIRE-FIGHTING
3Fire prevention, containment or extinguishing specially adapted for particular objects or places
07in vehicles, e.g. in road vehicles
08in aircraft
F02C 9/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
9Controlling gas-turbine plants; Controlling fuel supply in air-breathing jet-propulsion plants
F02C 7/25 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
7Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F02C1/-F02C6/158; Air intakes for jet-propulsion plants
24Heat or noise insulation
25Fire protection or prevention
F02C 9/46 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
9Controlling gas-turbine plants; Controlling fuel supply in air-breathing jet-propulsion plants
26Control of fuel supply
46Emergency fuel control
B64D 37/32 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
37Arrangements in connection with fuel supply for power plant
32Safety measures not otherwise provided for, e.g. preventing explosive conditions
B64D 37/04 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
64AIRCRAFT; AVIATION; COSMONAUTICS
DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
37Arrangements in connection with fuel supply for power plant
02Tanks
04Arrangement thereof in or on aircraft
Applicants
  • GENERAL ATOMICS AERONAUTICAL SYSTEMS, INC. [US]/[US]
Inventors
  • NEWLIN, Jason B.
  • BONNER, Brett C.
  • FEASEY, Graham
Agents
  • KRATZ, Rudy
  • MITCHELL, Calista
  • MENGHINI, Scott
Priority Data
16/842,57407.04.2020US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FAULT-TOLERANT FUEL ISOLATION FROM ENGINE FIREBAY
(FR) ISOLEMENT DE CARBURANT INSENSIBLE AUX DÉFAILLANCES À PARTIR D'UNE CLOISON PARE-FEU DE MOTEUR
Abstract
(EN)
Fuel isolation systems, apparatuses and methods are described. In some embodiments, a system comprises a fuel tank, a fuel pump, an engine, a firewall, a fuel line from the fuel tank to the engine, a connector coupled inline with the fuel line on a cold side of the fuel line, a normally closed valve coupled to the connector, an air feed line coupled to an ullage of the fuel tank and to the valve. In the event of an engine fire condition, a control unit outputs signaling to turn off the fuel pump and open the valve to introduce air from the ullage into the fuel line. The introduced air provides a siphon break in the fuel line such that the fuel cannot be siphoned and the only fuel that can pass the firewall is the remaining fuel in the fuel line downstream of the connector and the introduced air.
(FR)
Des systèmes, des appareils et des procédés d'isolement de carburant sont décrits. Dans certains modes de réalisation, un système comprend un réservoir de carburant, une pompe à carburant, un moteur, une cloison pare-feu, une conduite de carburant allant du réservoir de carburant au moteur, un raccord accouplé en ligne avec la conduite de carburant sur un côté froid de la conduite de carburant, une soupape normalement fermée accouplée au raccord, une conduite d'alimentation en air accouplée à un espace libre du réservoir de carburant et à la soupape. Dans le cas d'une condition d'incendie de moteur, une unité de commande délivre une signalisation pour éteindre la pompe à carburant et ouvrir la soupape pour introduire de l'air à partir de l'espace libre dans la conduite de carburant. L'air introduit fournit une rupture de siphon dans la conduite de carburant de telle sorte que le carburant ne peut pas être siphonné et le seul carburant qui peut passer la cloison pare-feu est le carburant restant dans la conduite de carburant en aval du raccord et de l'air introduit.
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