초록 ▼

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 caus

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.

대표청구항 ▼

[ We claim:] [1.] An ice-protection system for an aircraft surface having a leading edge region with a roughness-sensitive zone and surfaces located immediately aft of the leading edge region, comprising:a running-wet anti-icer located within said roughness-sensitive zone; andmeans for periodically

[ We claim:] [1.] An ice-protection system for an aircraft surface having a leading edge region with a roughness-sensitive zone and surfaces located immediately aft of the leading edge region, comprising:a running-wet anti-icer located within said roughness-sensitive zone; andmeans for periodically mechanically de-icing the aft surfaces, said periodically mechanically de-icing means comprising a) a semi-rigid skin forming an aerodynamic surface of the airfoil and b) at least one mechanical actuator for flexing the skin, said at least one mechanical actuator being entirely external to said semi-rigid skin and being located subjacent to said semi-rigid skin, and each of said at least one mechanical actuator and said semi-rigid skin being a discrete part.