Aeronautics and astronautics – Aircraft structure – Fuel supply
Patent
1976-03-05
1977-06-28
Blix, Trygve M.
Aeronautics and astronautics
Aircraft structure
Fuel supply
60 3909F, 123136, 169 62, B64D 3732, A62C 110
Patent
active
040320910
ABSTRACT:
A fuel line leading from a fuel supply tank of a self-propelled aircraft to the engine is equipped with a normally open fuel cut-off valve adjacent the tank and with a vent control valve adjacent the engine. The vent control valve is normally open for supplying fuel to the engine and normally closed with respect to a vent which discharges into the atmosphere. At one end of the fuel line, in advance of these two valves, in the normal direction of flow of fuel through the line, the fuel line is connected to a pressurized source of evacuating fluid, such as a drum of carbon dioxide. A normally closed evacuation control valve is interposed in the line at that end at a location adjacent the evacuating fluid source and in advance of the fuel cut-off valve. A sequence control is connected to the valves and, when rendered operative, at the choice of the operator, causes the valves to operate in a sequence in which the fuel cut-off valve is closed and promptly after, or concurrently with, said closure the vent control valve and the evacuation valve are opened so as to introduce the evacuating fluid into the line and to vent the line, respectively, without blow-back into the tank.
REFERENCES:
patent: 2015995 (1935-10-01), Egtvedt
patent: 2038998 (1936-04-01), Hammond
patent: 2413087 (1946-12-01), Urbany
patent: 3509942 (1970-05-01), Lindberg
Blix Trygve M.
Frankfort Charles E.
Leonard John Harrow
Reddy, Trustee Thomas J.
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