| 主权项 |
1. A propulsion system for an aircraft, the propulsion system comprising
a gas turbine engine including an engine core and a fan coupled to the engine core, the fan configured to discharge pressurized bypass air that is passed around the engine core, and a nacelle surrounding a portion of the gas turbine engine, the nacelle including a strut that extends away from the gas turbine engine and a cooling unit housed in the strut, the cooling unit fluidly coupled to the gas turbine engine to cool fluid or gas from the gas turbine engine and return the cooled fluid or gas to the gas turbine engine, wherein the cooling unit includes a duct, a heat exchanger positioned within the duct, and a diverter valve that is movable within the duct from a first position arranged to direct pressurized bypass air moving through the duct into contact with the heat exchanger to a second position arranged to divert pressurized bypass air around the heat exchanger without contacting the heat exchanger. |
