14 October 2003
INFORMATION SHEET 1-2
BASIC ENGINE CONSTRUCTION
1. The T-34C aircraft is powered by a PT6A-25 turboprop
engine, built by Pratt and Whitney. It is a reverse-flow type
with inverted flight capabilities. This engine is rated at a
maximum of 550 shaft horsepower SHP; however, normal NATOPS
operation is limited to 425 SHP (1015 ft-lb torque).
2. The primary purpose of the engine is to provide the
motive force to turn the propeller through the reduction
gearbox. The secondary purpose is to supply power to drive the
engine-driven accessories. The PT6A-25 has four main sections:
case, compressor, and diffuser. The...
The turbine section consists of ...