Aeronautics and astronautics – Aircraft structure – Details
Patent
1981-09-30
1985-03-26
Walton, George L.
Aeronautics and astronautics
Aircraft structure
Details
137244, 137 811, 251 636, 98 15, F16K 31122, F16K 1736, B64C 100
Patent
active
045068518
ABSTRACT:
A drain structure for facilitating the draining of liquid condensate from inside an aircraft whenever air pressures inside and outside the aircraft are substantially equal. A pressure-sensitive apparatus is provided in conjunction with a drain opening through the aircraft's outer skin so that liquid can pass through the drain opening only while the apparatus is open. The apparatus includes a housing and a valve in the form of a slider movable within the housing to open and close the apparatus in response to the pressure differential between the inside and the outside of the aircraft. The housing defines a liquid passageway between the inside of the aircraft and the drain opening, and the slider closes the apparatus by blocking this liquid passageway whenever there is a substantial pressure differential between the inside and the outside of the aircraft. In opening and closing the apparatus the slider moves through both the liquid passageway and the drain opening so that the drain structure is kept free of debris which might otherwise interfere with operation of the slider or the draining of liquid.
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Gupta Alankar
Jenny Robert W.
Malone Frank L.
DeVogel Nicolaas
Donahue Bernard A.
Hess Lynn H.
The Boeing Company
Walton George L.
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