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Pratt & Whitney Canada PT6A

The Engine  Specifications (typical)
 
In the mid-50s, P&W decided to concentrate on turbine engines for general aviation.  Their first product was the PT6A.  Forty years and 34,000 engines later (not including the PT6T), the PT6A is still a leader in the corporate and general turboprop market.

Depending upon the model, the PT6A produces from 580 to 1,940 horsepower (432 - 1440 kW).

Turboprop
Compressor: three stage axial with single stage centrifugal
Turbine: 1-stage HP and 1-stage LP for the prop
Mass flow: 5.9 - 9.5 lbs/sec
Pressure ratio: 6.5 - 10
 
 Models  Used by
 
PT6A-25: 400 hp (298 kW)
PT6A-27: 652 hp (486 kW)
PT6A-42: 850 hp (634 kW)
PT6A-50: 1,120 hp (835 kW)
PT6A-67B: 1,200 hp (895 kW)
PT6A-67D: 1,280 hp (955 kW)
PT6A-67R: 1,424 hp (1062 kW)
PT6A-68: 1,708 hp (1274 kW) 
PT6A-114: 600 hp (477 kW)
PT6A-135: 750 hp (559 kW)
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More about Pratt & Whitney Canada
 

page updated 02 January 2010

 

 

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Kenneth W Shanaberger 2000 - 2010