Patent ID: 8550402
Filing Date: 2013-10-08
Classification: B64C,B64D,H05B

Abstract:
1. A main rotor blade assembly for a rotary-wing aircraft comprising: a main rotor blade; a first electrothermal heating element located along a leading edge of said main rotor blade over a stagnation line; a second electrothermal heating element located aft of said first electrothermal heating element along an upper surface of said main rotor blade; and a third electrothermal heating element located aft of said first electrothermal heating element along a lower surface of said main rotor blade; a controller in communication with said first electrothermal heating element, said second electrothermal heating element and said third electrothermal heating element, said third electrothermal heating element operated prior to said first electrothermal heating element and said first electrothermal heating element operated prior to said second electrothermal heating element in response to a heating cycle defined by said controller, said heating cycle includes an on-time and an off-time.