Pratt & Whitney Canada PW100

The Pratt & Whitney Canada PW100 aircraft engine family is a series of 1,800 to 5,000 shaft horsepower (1,300 to 3,700 kW) turboprops manufactured by Pratt & Whitney Canada. The engine first entered service in 1984. Pratt & Whitney Canada dominates the turboprops market with 89% of the turboprop regional airliner installed base in 2016, leading GE Aviation and Allison Engine Company.[1]

PW100
PW120 in Canada Aviation Museum
Type Turboprop
National origin Canada
Manufacturer Pratt & Whitney Canada
First run 1984 (entered service)
Major applications ATR 42/ATR 72
De Havilland Canada Dash 8
EADS CASA C-295
Embraer EMB 120 Brasilia
Fokker 50
Xian MA60

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 two-stage free (power) turbine.

Variants
PW115
Rated at 1,500 shp (1,100 kW).[2] No longer in service.[3]
PW118
Certified in 1986 with a maximum continuous rating of 1892 eshp (1411 kW), can be converted to a PW118A.[3]
PW118A
Certified in 1987 with a maximum continuous rating of 1893 eshp (1412 kW), can be converted to a PW118B.[3]
PW118B
Certified in 1996 with a maximum continuous rating of 1892 eshp (1412 kW).[3]
PW119
No longer in service.[3]
PW119A
Certified in 1992 with a maximum continuous rating of 1948 eshp (1453 kW), can be converted to a PW119B.[3]
PW119B
Certified in 1993 with a maximum continuous rating of 1941 eshp (1448 kW), can be converted to a PW119C.[3]
PW119C
Certified in 1995 with a maximum continuous rating of 1941 eshp (1448 kW), can be converted to a PW119B.[3]
PW120
Certified in 1983 with a maximum continuous rating of 1787 eshp (1333 kW), can be converted to a PW121.[3]
PW120A
Certified in 1984 with a maximum continuous rating of 1892 eshp (1411 kW), can be converted to a PW121.[3]
PW121
Certified in 1987 with a maximum continuous rating of 2044 eshp (1524 kW), can be converted to a PW120.[3]
PW121A
Certified in 1995 with a maximum continuous rating of 1992 eshp (1465 kW).[3]
Pratt & Whitney Canada PW123
PW123
Certified in 1987 with a maximum continuous rating of 2261 eshp (1687 kW), can be converted to a PW123B, C, D or E.[3]
PW123AF
Certified in 1989 with a maximum continuous rating of 2261 eshp (1686 kW), can be converted to PW123.[3]
PW123B
Certified in 1991 with a maximum continuous rating of 2262 eshp (1687 kW), can be converted to a PW123.[3]
PW123C
Certified in 1994 with a maximum continuous rating of 2054 eshp (1532 kW), can be converted to a PW123 or D.[3]
PW123D
Certified in 1994 with a maximum continuous rating of 2054 eshp (1532 kW), can be converted to a PW123 or C.[3]
PW123E
Certified in 1995 with a maximum continuous rating of 2261 eshp (1687 kW), can be converted to a PW123.[3]
PW124
No longer in service.[3]
PW124A
No longer in service.[3]
PW124B
Certified in 1988 with a maximum continuous rating of 2522 eshp (1881 kW), can be converted to a PW123 or PW127.[3]
PW125
No longer in service.[3]
PW125A
No longer in service.[3]
PW125B
Certified in 1987 with a maximum continuous rating of 2261 eshp (1687 kW).[3]
PW126
Certified in 1987 with a maximum continuous rating of 2323 eshp (1732 kW) can be converted to a PW123 or PW126A.[3]
PW126A
Certified in 1989 with a maximum continuous rating of 2493 eshp (1859 kW), can be converted to a PW123 or PW127D.[3]
PW127
Certified in 1992 with a maximum continuous rating of 2619 eshp (1953 kW), can be converted to a PW127C,E or F.[3]
PW127A
Certified in 1992 with a maximum continuous rating of 2620 eshp (1954 kW), can be converted to a PW127B.[3]
PW127B
Certified in 1992 with a maximum continuous rating of 2619 eshp (1953 kW).[3]
PW127C
Certified in 1992 with a maximum continuous rating of 2880 eshp (2148 kW).[3]
PW127D
Certified in 1993 with a maximum continuous rating of 2880 eshp (2148 kW), can be converted to a PW127B.[3]
PW127E
A PW127E installed on an ATR 72-500
Certified in 1994 with a maximum continuous rating of 2516 eshp (1876 kW), can be converted to a PW127M.[3]
PW127F
Certified in 1996 with a maximum continuous rating of 2619 eshp (1953 kW), can be converted to a PW127M.[3]
PW127G engine on a CASA C-295 aircraft at Paris Air Show 2013
PW127G
Certified in 1997 with a maximum continuous rating of 3058 eshp (2281 kW).[3]
PW127H
Certified in 1998 with a maximum continuous rating of 2880 eshp (2148 kW).[3]
PW127J
Certified in 1999 with a maximum continuous rating of 2880 eshp (2148 kW).[3]
PW127M
Certified in 2007 with a maximum continuous rating of 2619 eshp (1953 kW).[3]
PW150 Twin Pack
A proposed powerplant for the Airbus A400M Atlas;[4] two PW150-based engines would be used to drive a single propeller.[5] The powerplant was eliminated from contention by Airbus in early June 1999, since it narrowly missed providing the 9,000 shp (6,700 kW) required to drive the eight-bladed propeller at the time, and its specific fuel consumption (SFC) was slightly excessive.[6]
PW150A
Certified in 1998-06-24 with a maximum continuous rating of 5071 SHP (3782 kW),[3] 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 and Antonov An-132.
ST18M
marine application for PW100
ST40M
marine application for PW150A

Applications

Aircraft
A PW120A fitted to a Canadian Forces CT-142

Other applications

Specifications
PW100/150 Series[7]
SeriesThermo.
ESHP		Mech.
SHP		Prop.
max. RPM		HeightWidthLengthApplication
PW118 2,1801,8001,30031 in25 in81 in Embraer EMB-120
PW120 2,4002,1001,20031 in25 in84 in ATR 42-300/320, De Havilland Canada DHC-8-100
PW123/124 3,0002,4001,20033 in26 in84 in De Havilland Canada DHC-8-200/DHC-8-300, Canadair CL-215T/CL-415
PW127 3,2002,7501,20033 in26 in84 in An-140, ATR 42-400/500/600, ATR 72-210/500/600, CASA C-295, Il-114-100, Xian MA60
PW150 6,2005,0001,02044 in30 in95 in De Havilland Canada DHC-8-400

Data from PW100,[8] PW150[9]

General characteristics

  • Type: Turboprop
  • Length: 2,046–2,130 mm (80.6–83.9 in), PW150 : 2,420 mm (95 in)
  • Diameter: 635–679 mm (25.0–26.7 in), PW150 : 790 mm (31 in)
  • Dry weight: 390.5–481.7 kg (861–1,062 lb), PW150 : 716.9 kg (1,580 lb)

Components

  • Compressor: Two-spool, two-stage centrifugal compressors, PW150: Two-spool, 3-stage axial, single centrifugal[7]
  • Combustors: Reverse flow combustor[7]
  • Turbine: Single-stage low pressure and high pressure turbines, Two-stage power turbine[7]
  • Fuel type: PW150: Kerosene Jet A, A-1/JP8; Wide Cut Jet B/JP4; High Flash JP5/JP1
  • Oil system: Self-contained system[10]

Performance

  • Maximum power output: 1,342–1,846 kW (1,800–2,476 hp), PW150: 3,415 kW (4,580 hp) + 3.412 kN (767 lbf)
  • Turbine inlet temperature: max. ITT, 750-816°C Normal Take-off (PW150: 880°C), 950°C 5 secs starting (PW150: 920°C)
  • Power-to-weight ratio: 3.44–3.83 kW/kg (2.09–2.33 hp/lb), PW150: 4.76 kW/kg (2.90 hp/lb)

See also

Related lists

References
  1. Schonland, Addison (25 Apr 2017). "Pratt & Whitney Canada – The Dominator". Air Insight Group. Retrieved 12 July 2020.
  2. "Civil Turboshaft/Turboprop Specifications". www.jet-engine.net.
  3. Transport Canada Type Certificate Data Sheet Archived 2009-09-10 at the Wayback Machine
  4. Moxon, Julian (17 March 1999). "CASA chosen for final assembly of Airbus Military transporter". Flight International. Toulouse, France. p. 22. ISSN 0015-3710.
  5. Norris, Guy (2 June 1999). "European powerhouse: BMW Rolls-Royce is poised for new growth as it enters the commercial engine world with the BR715". Flight International. No. 4679. Berlin, Germany. pp. 38–40. ISSN 0015-3710. OCLC 207200939.
  6. Cook, Nick (9 June 1999). "Airbus to select A400M engine next month". Jane's Defence Weekly. Vol. 31 no. 23. p. 1. ISSN 0265-3818. OCLC 207398309.
  7. "PW100/150 Turboprops". Pratt & Whitney Canada.
  8. "PW100 Type certificate data sheet" (PDF). EASA. 4 June 2014. Archived from the original (PDF) on 31 January 2017. Retrieved 14 February 2017.
  9. "PW150 Type certificate data sheet" (PDF). EASA. 19 November 2014.
  10. ATR 42 72 Aircraft Maintenance Training Manual, chapter 71
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