Patent ID: 8484982

Claim:
A gas turbine engine comprising a gas duct having a gas duct wall and a bleed structure for a bleed passage, the bleed passage having a bleed passage wall portion, for gas to enter or exit the bleed passage in the gas turbine engine, the bleed structure comprising a first wall portion defining a first side of an opening for the bleed passage, and a second wall portion defining a second side, opposite the first side of the opening, wherein the gas duct wall is substantially at a same level across the opening, one of the first and second wall portions has a contoured shape terminating in an edge located radially further from the duct wall relative to a center line axis of the gas duct than an edge of the other of the first and second wall portions, and the contoured shape extends to the duct wall and forms a lowered portion relative to the duct wall.