Hybrid ice-protection system for use on roughness-sensitive airf

Details Hybrid ice-protection system for use on roughness-sensitive airf Hybrid ice-protection system for use on roughness-sensitive airf

1996-06-19

1999-07-13

Jordan, Charles T.

Aeronautics and astronautics

Aircraft structure

Ice prevention

244134A, B64D 1500

Patent

active

059215020

ABSTRACT:
An electro-thermal or hot gas anti-icer of the "running-wet" type is mounted at the leading edge of an airfoil. Mechanical de-icers are mounted on the surfaces aft of the anti-icer. The mechanical de-icers throw off ice without creating runback water, thereby eliminating runback refreeze ridges caused by a known hybrid ice-protection system. Advantageously, the de-icers are of a type in which the airfoil has a semi-rigid skin that forms an aerodynamic surface of the airfoil, and in which there is at least one mechanical actuator for flexing the skin.

REFERENCES:
patent: 2393635 (1946-01-01), Hubbard
patent: 3013752 (1961-12-01), Rush
patent: 4732351 (1988-03-01), Bird
patent: 5011098 (1991-04-01), McLaren et al.
patent: 5531405 (1996-07-01), Goldberg
patent: 5553815 (1996-09-01), Adams et al.
patent: 5558304 (1996-09-01), Adams
patent: 5657952 (1997-08-01), Goldberg
patent: 5782435 (1998-07-01), Ingram et al.

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