Pratt & Whitney Canada PW100

PW100
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 aero engine family is a series of 2,000 to 5,000 horsepower (1,500 to 3,700 kW) turboprops manufactured by Pratt and Whitney's Canadian subsidiary. The engine first entered service in 1984.

Design

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

PW115

No longer in service. Used on the Embraer EMB 120 Brasilia.

PW118

Certified in 1986 with a maximum continuous rating of 1892eshp (1411kW), can be converted to a PW118A.

PW118A

Certified in 1987 with a maximum continuous rating of 1893eshp (1412kW), can be converted to a PW118B.

PW118B

Certified in 1996 with a maximum continuous rating of 1892eshp (1412kW).

PW119

No longer in service.

PW119A

Certified in 1992 with a maximum continuous rating of 1948eshp (1453kW), can be converted to a PW119B.

PW119B

Certified in 1993 with a maximum continuous rating of 1941eshp (1448kW), can be converted to a PW119C.

PW119C

Certified in 1995 with a maximum continuous rating of 1941eshp (1448kW), can be converted to a PW119B.

PW120

Certified in 1983 with a maximum continuous rating of 1787eshp (1333kW), can be converted to a PW121.

PW120A

Certified in 1984 with a maximum continuous rating of 1892eshp (1411kW), can be converted to a PW121.

PW121

Certified in 1987 with a maximum continuous rating of 2044eshp (1524kW), can be converted to a PW120.

PW121A

Certified in 1995 with a maximum continuous rating of 1992eshp (1465kW).

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.

PW123AF

Certified in 1989 with a maximum continuous rating of 2261eshp (1686kW), can be converted to PW123.

PW123B

Certified in 1991 with a maximum continuous rating of 2262eshp (1687kW), can be converted to a PW123.

PW123C

Certified in 1994 with a maximum continuous rating of 2054eshp (1532kW), can be converted to a PW123 or D.

PW123D

Certified in 1994 with a maximum continuous rating of 2054eshp (1532kW), can be converted to a PW123 or C.

PW123E

Certified in 1995 with a maximum continuous rating of 2261eshp (1687kW), can be converted to a PW123.

PW124

No longer in service.

PW124A

No longer in service.

PW124B

Certified in 1988 with a maximum continuous rating of 2522eshp (1881kW), can be converted to a PW123 or PW127.

PW125

No longer in service.

PW125A

No longer in service.

PW125B

Certified in 1987 with a maximum continuous rating of 2261eshp (1687kW).

PW126

Certified in 1987 with a maximum continuous rating of 2323eshp (1732kW) can be converted to a PW123 or PW126A.

PW126A

Certified in 1989 with a maximum continuous rating of 2493eshp (1859kW), can be converted to a PW123 or PW127D.

PW127

Certified in 1992 with a maximum continuous rating of 2619eshp (1953kW), can be converted to a PW127C,E or F.

PW127A

Certified in 1992 with a maximum continuous rating of 2620eshp (1954kW), can be converted to a PW127B.

PW127B

Certified in 1992 with a maximum continuous rating of 2619eshp (1953kW).

PW127C

Certified in 1992 with a maximum continuous rating of 2880eshp (2148kW).

PW127D

Certified in 1993 with a maximum continuous rating of 2880eshp (2148kW), can be converted to a PW127B.

PW127E

Certified in 1994 with a maximum continuous rating of 2516eshp (1876kW), can be converted to a PW127M.

PW127F

Certified in 1996 with a maximum continuous rating of 2619eshp (1953kW), can be converted to a PW127M.

PW127G

Certified in 1997 with a maximum continuous rating of 3058eshp (2281kW).

PW127H

Certified in 1998 with a maximum continuous rating of 2880eshp (2148kW).

PW127J

Certified in 1999 with a maximum continuous rating of 2880eshp (2148kW).

PW127M

Certified in 2007 with a maximum continuous rating of 2619eshp (1953kW).

PW150A

Certified in 2007 with a maximum continuous rating of 5071 SHP (3782kW).

Applications

Aircraft

A PW120A fitted to a Canadian Forces CT-142

• ATR 42 (PW127E)
• ATR 72 (PW127F)
• BAe ATP (PW126)
• Bombardier 415 (PW123AF)
• Bombardier CL-215T (PW123AF)
• Bombardier Q100 (PW121)
• Bombardier Q200/Q300 (PW123)
• Bombardier Q400 (PW150)
• Canadair CL-415 (PW123AF)
• Dornier 328 (PW119)
• EADS CASA C-295 (PW127G)
• Embraer EMB 120 Brasilia (PW118A)
• Euromil Mi-38 (PW127TS)
• Fokker 50 (PW125B)
• Fokker 60 (PW127B)
• Ilyushin Il-114 (PW127H)
• Xian MA60 (PW127J)

Other applications

• Bombardier JetTrain

Specifications

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:

References

 2. (2) ATR 42 72 Aircraft Maintenance Training Manual,chapter 71

External links

• Pratt & Whitney Canada PW100 website