TurboProps PT6A Large
It is designed for use in both corporate and commuter applications. Also, special versions of the engine power utility and military aircraft.
Main engine components include a multi-stage compressor, single stage compressor turbine and independent two-stage power turbine driving the output shaft through a reduction gearbox. The engine can be used in pusher or tractor installations.
Operation
The air enters the engine through the inlet screen; it is then compressed by a multi-stage compressor and fed to the combustion chamber where it is mixed with fuel and ignited.
The hot gas expands through three turbine stages; the first drives the compressor and the accessories; the other two mechanically independent from the first, drive the propeller shaft by means of a reduction gearbox. Finally, the hot gas is discharged through the exhaust ducts.
Pratt & Whitney Canada Corp., 1000 Marie Victorin Blvd, Longueuil, PQ J4G 1A1. Tel: 800-268-8000; Fax: 450-647-7588.