Pratt & Whitney Canada PW100

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PW100
PW120.jpg
PW120 in Canada Aviation Museum
Type Turboprop
National origin Canada
Manufacturer Pratt & Whitney Canada
Major applications ATR 42/ATR 72
Bombardier Q400
EADS CASA C-295
Embraer EMB 120 Brasilia
Fokker 50

The Pratt & Whitney Canada PW100 aircraft engine family is a series of 2,000 to 5,000 horsepower (1,500 to 3,700 kW) turboprops manufactured by Pratt & Whitney Canada. The engine first entered service in 1984.

Design[edit]

Originally called the PT7, the PW100 uses a relatively unusual three-shaft engine configuration. In the PW100, a centrifugal LP impeller (except for the PW150 which uses a 3-stage axial LP compressor), driven by a single stage LP turbine, supercharges a centrifugal HP impeller, driven by a single stage HP turbine. Power is delivered to the offset propeller reduction gearbox via a third shaft, connected to a 2-stage free (power) turbine.

Variants[edit]

PW115
No longer in service.[1]
PW118
Certified in 1986 with a maximum continuous rating of 1892eshp (1411kW), can be converted to a PW118A.[1]
PW118A
Certified in 1987 with a maximum continuous rating of 1893eshp (1412kW), can be converted to a PW118B.[1]
PW118B
Certified in 1996 with a maximum continuous rating of 1892eshp (1412kW).[1]
PW119
No longer in service.[1]
PW119A
Certified in 1992 with a maximum continuous rating of 1948eshp (1453kW), can be converted to a PW119B.[1]
PW119B
Certified in 1993 with a maximum continuous rating of 1941eshp (1448kW), can be converted to a PW119C.[1]
PW119C
Certified in 1995 with a maximum continuous rating of 1941eshp (1448kW), can be converted to a PW119B.[1]
PW120
Certified in 1983 with a maximum continuous rating of 1787eshp (1333kW), can be converted to a PW121.[1]
PW120A
Certified in 1984 with a maximum continuous rating of 1892eshp (1411kW), can be converted to a PW121.[1]
PW121
Certified in 1987 with a maximum continuous rating of 2044eshp (1524kW), can be converted to a PW120.[1]
PW121A
Certified in 1995 with a maximum continuous rating of 1992eshp (1465kW).[1]
Pratt & Whitney Canada PW123
PW123
Certified in 1987 with a maximum continuous rating of 2261eshp (1687kW), can be converted to a PW123B, C, D or E.[1]
PW123AF
Certified in 1989 with a maximum continuous rating of 2261eshp (1686kW), can be converted to PW123.[1]
PW123B
Certified in 1991 with a maximum continuous rating of 2262eshp (1687kW), can be converted to a PW123.[1]
PW123C
Certified in 1994 with a maximum continuous rating of 2054eshp (1532kW), can be converted to a PW123 or D.[1]
PW123D
Certified in 1994 with a maximum continuous rating of 2054eshp (1532kW), can be converted to a PW123 or C.[1]
PW123E
Certified in 1995 with a maximum continuous rating of 2261eshp (1687kW), can be converted to a PW123.[1]
PW124
No longer in service.[1]
PW124A
No longer in service.[1]
PW124B
Certified in 1988 with a maximum continuous rating of 2522eshp (1881kW), can be converted to a PW123 or PW127.[1]
PW125
No longer in service.[1]
PW125A
No longer in service.[1]
PW125B
Certified in 1987 with a maximum continuous rating of 2261eshp (1687kW).[1]
PW126
Certified in 1987 with a maximum continuous rating of 2323eshp (1732kW) can be converted to a PW123 or PW126A.[1]
PW126A
Certified in 1989 with a maximum continuous rating of 2493eshp (1859kW), can be converted to a PW123 or PW127D.[1]
PW127
Certified in 1992 with a maximum continuous rating of 2619eshp (1953kW), can be converted to a PW127C,E or F.[1]
PW127A
Certified in 1992 with a maximum continuous rating of 2620eshp (1954kW), can be converted to a PW127B.[1]
PW127B
Certified in 1992 with a maximum continuous rating of 2619eshp (1953kW).[1]
PW127C
Certified in 1992 with a maximum continuous rating of 2880eshp (2148kW).[1]
PW127D
Certified in 1993 with a maximum continuous rating of 2880eshp (2148kW), can be converted to a PW127B.[1]
PW127E
Certified in 1994 with a maximum continuous rating of 2516eshp (1876kW), can be converted to a PW127M.[1]
PW127F
Certified in 1996 with a maximum continuous rating of 2619eshp (1953kW), can be converted to a PW127M.[1]
PW127G engine on a CASA C-295 aircraft at Paris Air Show 2013
PW127G
Certified in 1997 with a maximum continuous rating of 3058eshp (2281kW).[1]
PW127H
Certified in 1998 with a maximum continuous rating of 2880eshp (2148kW).[1]
PW127J
Certified in 1999 with a maximum continuous rating of 2880eshp (2148kW).[1]
PW127M
Certified in 2007 with a maximum continuous rating of 2619eshp (1953kW).[1]
PW150A
Certified in 1998-06-24 with a maximum continuous rating of 5071 SHP (3782kW),[1] although capable of up to 7000 SHP. Has a 3 stage axial low pressure compressor instead of the centrifugal NL unit on other variants. Used on the Bombardier Q400.
ST18M
marine application for PW100
ST40M
marine application for PW150A

Applications[edit]

Aircraft[edit]

A PW120A fitted to a Canadian Forces CT-142

Other applications[edit]

Specifications[edit]

Data from[citation needed]

General characteristics

  • Type: Turboprop
  • Length:
  • Diameter:
  • Dry weight: 929 pounds Weight with accessories and fluid 1064 pounds(2)

Components

  • Compressor: LP and HP independent centrifugal compressors(2). PW150 LP compressor is three-stage axial.
  • Combustors: Annular reverse flow combustion chamber(2)
  • Turbine: Axial flow: single-stage HP; single-stage LP; the power turbine has two stages on all PW100 variants, and three stages on the PW150.
  • Fuel type: JET A
  • Oil system: Self-contained system(2)

Performance

  • Maximum power output: pw120 takeoff 1800shp Rto 2000shp pw121 takeoff 1900shp Rto 2100shp pw124 takeoff 2160shp Rto 2400shp pw127 takeoff 2475shp Rto 2750shp (Rto=Reserve takeoff power)(shp=shaft horsepower)(2)
  • Turbine inlet temperature: max ITT for Reserve takeoff power 816c Start 950c 5 seconds(2)
  • Power-to-weight ratio:

See also[edit]

Related lists

References[edit]

  • ATR 42 72 Aircraft Maintenance Training Manual,chapter 71

External links[edit]