航空术语词典Dictionary of Aeronautical Terms 中

时间：2011-03-11 23:13来源：蓝天飞行翻译 作者：admin 点击：次

fire extinguisher. A device, either hand-held or installed in an aircraft, that directs a fire extinguishing agent onto a fire.
fire extinguishing agent. A chemical used to extinguish a fire. A fire extinguishing agent can extinguish a fire by reducing the temperature of the fuel to a value below its kindling point, by excluding oxygen from the fire, or by preventing the oxygen combining with the fuel. Carbon dioxide, water, Halon 1211, and Halon 1301 are fire extinguishing agents used in aircraft fire protection systems.
fire point (chemical characteristic). The lowest temperature at which the fumes of a volatile liquid (a liquid that evaporates easily) will ignite and continue to burn when a small flame is passed above its surface.
fireproof. 14 CFR Part 1:
“(1) With respect to materials and parts used to confine fire in a designated fire zone, means the capacity to withstand at least as well as steel in dimensions appropriate for the purpose for which they are used, the heat produced when there is a severe fire of extended duration in that zone; and
(2) With respect to other materials and parts, means the capacity to withstand the heat associated with fire at least as well as steel in dimensions appropriate for the purpose for which they are used.”
fireproof structure. A structure built of noncombustible materials and designed so it cannot be destroyed by fire.
fire-pull handle. The handle in an aircraft cockpit that is pulled at the first indication of an engine fire. Pulling this handle disconnects the generator from the electrical system, shuts off the fuel and hydraulic fluid to the engine, and closes the compressor bleed air valve. The fire extinguisher agent discharge switch is uncovered, but it is not automatically closed.

fire resistant. 14 CFR Part 1:
“(1) With respect to sheet or structural members means the capacity to withstand the heat associated with fire at least as well as aluminum alloy in dimensions appropriate for the purpose for which they are used; and
(2) With respect to fluid-carrying lines, fluid system parts, wiring, air ducts, fittings, and powerplant controls, means the capacity to perform the intended functions under the heat and other conditions likely to occur when there is a fire at the place concerned.”
fire-resistant structure. A structure that is able to resist fire or exposure to high temperature for a specified period of time without being destroyed or structurally damaged.
fire sleeve. A protective covering wrapped around flexible hoses installed in the engine compartments of an aircraft. A fire sleeve does not increase the service temperature of the hose, but it protects the hose from direct fire long enough to allow appropriate action to be taken.
fire triangle. A graphic display of the three components that must be present for a fire. These components are: fuel, oxygen, and heat.

firewall (aircraft structural component). A bulkhead made of a fireproof material used to separate the engine compartment from the rest of the aircraft.

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