초록 ▼

An aircraft fire protection system includes a plurality of extinguishant bottles which can be detonated to deliver extinguishant into a manifold and then to selected fire zones through valves associated with the respective fire zones. Solid state control circuitry opens the appropriate valve when a

An aircraft fire protection system includes a plurality of extinguishant bottles which can be detonated to deliver extinguishant into a manifold and then to selected fire zones through valves associated with the respective fire zones. Solid state control circuitry opens the appropriate valve when a corresponding push button switch is initially depressed and detonates one or more bottles in sequence when the same switch is subsequently depressed one or more times. A manual crash switch opens all valves when depressed once and discharges all bottles when depressed again. An automatic crash switch opens all valves and detonates all bottles if the aircraft should crash. A test circuit operates in a test mode to open all valves in sequence and to simulate sequential detonation of all bottles by applying low level current to the bottle detonator circuits.

대표청구항 ▼

A fire protection system for a vehicle such as an aircraft presenting therein at least first, second and third fire zones, said system comprising: first and second three way valves each having an inlet port for receiving extinguishant, a first outlet port connected with the inlet port when the valve

A fire protection system for a vehicle such as an aircraft presenting therein at least first, second and third fire zones, said system comprising: first and second three way valves each having an inlet port for receiving extinguishant, a first outlet port connected with the inlet port when the valve is in a first state, and a second outlet port connected with the inlet port when the valve is in a second state; means for continuously connecting said first outlet port of the first valve with the inlet port of the second valve and the second outlet port of the first valve continuously with the first fire zone; means for connecting the first and second outlet ports of the second valve with the respective second and third fire zones; a plurality of containers each holding extinguishant; a manifold line connected with each container to receive the extinguishant discharged therefrom, said manifold line being continuously connected with the inlet port of the first valve to apply extinguishant thereto when a container is discharged; switch means for selecting one of the fire zones to receive extinguishant, said switch means being selectively operable to effect the second state of said first valve to establish an extinguishant flow path from said manifold line through the first valve to the first fire zone, to effect the first state of both valves to establish an extinguishant flow path from said manifold line through both valves to the second fire zone, and to effect the first state of the first valve and the second state of the second valve to establish an extinguishant flow path from said manifold line through both valves to the third fire zone; and means for discharging each container to apply the extinguishant therein to said manifold line and said inlet port of the first valve and from there to the fire zone selected by the switch means.