Duct for hot air

Details Duct for hot air Duct for hot air

1985-10-04

1987-06-23

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft structure

Ice prevention

244207, 244134R, 138104, 138114, B64D 1504

Patent

active

046747141

ABSTRACT:
The duct (16) which delivers hot air (F) to the inside surface of the leading edge of a turbo-fan inlet cowl, for de-icing of the leading edge (11), is made double-walled (16,21) in order to safeguard from overheating the materials from which the cowl is constructed in the event of rupture of the duct. Preferably the flow of hot air in the outer duct blows open a hinged door (26) in the skin (10) of the cowl to provide a visual indication of the rupture of the inner duct. The outer duct can be made narrow enough to maintain working pressure in the inner duct after rupture.

REFERENCES:
patent: 327996 (1885-10-01), Brick
patent: 2636666 (1953-04-01), Lombard
patent: 2668596 (1954-02-01), Elliott
patent: 2820601 (1958-01-01), Crawford
patent: 3749336 (1973-07-01), Christensen et al.
patent: 3830290 (1974-08-01), Thamasett et al.
patent: 3917193 (1975-11-01), Runnels
patent: 3933327 (1976-01-01), Rosenthal et al.
patent: 4482114 (1984-11-01), Waters et al.

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