Cox & Company, Inc.

Dennis M Phillips

Kamel M Al-Khalil

Thomas F Ferguson

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.

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Pleasantville, NY, United States of America

Dennis M Phillips