| The
Allison Model 250 is the world's most successful small gas
turbine small engine. Designed for 250 hp and first flown in
1961, most manufacturers at the time expected piston engines to fill
this market. The U.S. military designation for this engine is
the T63. Now built by Rolls-Royce,
over 28,000 T63/250s have been produced. |
|
 | Turboprop/Turboshaft |
| Compressor: 6-stage axial + 1 centrifugal |
| Turbine: 2-stage gas-generator/
2-stage power |
| Mass flow: 3.1 lbs/sec |
| Pressure ratio: 6.3 |
|
