Patent ID: 7137245

Claim:
A duct assembly for use in a gas turbine engine, the duct assembly comprising: a duct having an upstream portion and a downstream portion, wherein the duct comprises an inner-body surface and an outer-body surface, and wherein the duct forms a primary fluid flow path between a high-pressure turbine disposed within the upstream end of the duct and a low-pressure turbine disposed within the downstream end of the duct; a combustor coupled to the upstream portion of the duct, the duct being configured to receive the flow from the combustor; a port disposed upstream of the high-pressure turbine on the outer-body surface of the duct; a nozzle disposed downstream of the high-pressure turbine and coupled to the duct; and a channel having an upstream end and a downstream end, wherein the upstream end of the channel is coupled in fluid communication with the port and the downstream end of the channel is coupled in fluid communication with the nozzle, and wherein the channel forms a bypass fluid flow path between the port and the nozzle.