| 摘要 |
The power plant operating method is for a plant of the active clearance controlled type, including a gas turbine engine housed within a nacelle compartment and a cooling air manifold extending around the engine. The method involves admitting active clearance control cooling air into the nacelle compartment and discharging the air against the engine. The method also comprises maintaining the air pressure within the nacelle compartment at altitude cruise conditions at a level which is on the order of one or two and one-half pounds per square inch above the pressure of the air externally of the power plant. The method then involves discharging air from the compartment in an aft direction relative to the aircraft on which the power plant is installed. |
