Aeronautics and astronautics – Aircraft structure – Passenger or crew accommodation
Patent
1982-09-24
1985-11-12
Barefoot, Galen L.
Aeronautics and astronautics
Aircraft structure
Passenger or crew accommodation
2441292, 15313, 52 1, 98 19, B64D 1300, B64D 2500
Patent
active
045523258
ABSTRACT:
The present invention provides a convenient and reliable means to evacuate smoke from an interior cabin (30) of a pressurized aircraft (20) by providing a normally closed smoke evacuation outlet (102) in the skin (108) of the aircraft in fluid communication with a relatively large area smoke disposal chute (114) extending upwardly from the cabin's ceiling (50), whereby upon the activation of the outlet, the smoke (106) (that otherwise would rise to and collect below the ceiling of the cabin until the whole cabin is full of smoke) will be discharged into the external airstream, with the differential pressure between the relatively high pressure in the cabin and the relatively low pressure in the external atmosphere (particularly at the high cruising altitudes associated with the operation of modern transport aircraft) providing the actual motive power. Preferably, the outlet is designed to be opened automatically (110, 124) in response to smoke in the vicinity of the smoke disposal chute being detected by means of a conventional type of smoke detector (120). The chute between the ceiling and the outlet on the skin may also be provided with a manual means (132, 134) for blocking the further outflow of pressurized air through the skin outlet opening in the event that the apparatus has been activated inadvertently or in the event that the emergency is over.
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Edward L. Lopez, "Smoke Emission from Burning Cabin Materials and the Effect on Visibility in Wide-Bodied Jet Transports, Mar. 1974, p. 13.
Barefoot Galen L.
Dachs Louis L.
Lockheed Corporation
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