Patent ID: 7938368

Claim:
A system comprising: a first anti-icing electrothermal heater located at a tip of a gas turbine engine nosecone; and a plurality of anti-icing electrothermal heater strips extending rearward from the first anti-icing electrothermal heater along the nosecone, wherein the plurality of anti-icing electrothermal heater strips are circumferentially spaced from each other, and wherein regions of the nosecone between adjacent anti-icing electrothermal heater strips and rearward of the first anti-icing electrothermal heater encompass less than 180° to limit ice from forming as single sheet covering a 180° or greater circumferential portion of the nosecone; and a set of second de-icing electrothermal heaters defining selectively heatable regions located on the nosecone between each of the plurality of anti-icing electrothermal heater strips and rearward of the first anti-icing electrothermal heater at the tip, wherein at least one of the selectively heatable regions extends rearward to an aft extent of an ice impingement zone of the nose cone.