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Pratt & Whitney Canada PT6A Engine

Pratt & Whitney Canada PT6A Engine

The Pratt & Whitney Canada PT6A is a family of twin-shaft turboprop engines and the world’s most popular engine in its class. Its design was started in 1958, entered service in 1964, there have been over 50,000 engines produced and they are still under production today. As many as 69 different versions of the PT6A […]

The Pratt & Whitney Canada PT6A is a family of twin-shaft turboprop engines and the world’s most popular engine in its class. Its design was started in 1958, entered service in 1964, there have been over 50,000 engines produced and they are still under production today. As many as 69 different versions of the PT6A have been manufactured with engine power ranging from 500 to 2,000 shp.

In service, PT6A-powered aircraft are used for many different purposes such as transport of people, dropping cargo in adverse weather conditions; military pilot training, surveillance, and other special missions; and supporting various environmental efforts.

Specs


  • Compressor:3-stage axial + 1-stage centrifugal flow compressor
  • Combustors: annular reverse-flow with 14 Simplex burners
  • Turbine: 1-stage gas generator power turbine + 1-stage free power turbine
  • Length: 62 in (1,575 mm)
  • Diameter: 19 in (483 mm)
  • Dry Weight: 270 lb (122.47 kg)
  • Overall Pressure Ratio: 6.3:1
  • Maximum power output: 578 hp (431 kW) equivalent power at 2,200 output rpm for take-off
  • Air Mass Flow: 5.3 lb (2 kg)/second

Manufacturer: Pratt & Whitney Canada

Category: Turboprop

Introduction: 1964

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