Ice protection for porous structure

Details Ice protection for porous structure Ice protection for porous structure

1997-06-12

1999-08-31

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft structure

Ice prevention

244134C, 244207, 60 39093, B64D 1500

Patent

active

059442875

ABSTRACT:
A nacelle having a porous structure is provided with laminar flow control and contamination protection. In region B suction through a composite layer is achieved by evacuating a chamber adjacent the inner surface of the nacelle to provide laminar flow control. At the leading edge of the nacelle a sintered metal sheet is attached to an inner surface of the composite layer to control the flow of a liquid over the leading edge of the nacelle. The liquid is contained in a chamber adjacent the sintered metal sheet which is defined by a backing sheet which has a series of depressions therein. Hot air fed through a perforated pipe impinges upon the backing sheet and the depressions transmit heat to the sintered metal sheet. The sintered metal sheet has good thermal conductivity and in turn heats the porous composite layer to prevent the formation of ice thereon.

REFERENCES:
patent: 2390093 (1945-12-01), Garrison
patent: 4434201 (1984-02-01), Humphreys
patent: 4508295 (1985-04-01), Caattaneo et al.
patent: 5011098 (1991-04-01), McLaren et al.
patent: 5114100 (1992-05-01), Rudolph et al.
patent: 5297765 (1994-03-01), Hughes et al.

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