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 was first introduced as a technology demonstrator in 1977,[1] then 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.[2]

PW100
PW120.jpg
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

DesignEdit

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.

VariantsEdit

PW115
Rated at 1,500 shp (1,100 kW).[3] No longer in service.[4]
PW118
Certified in 1986 with a maximum continuous rating of 1892 eshp (1411 kW), can be converted to a PW118A.[4]
PW118A
Certified in 1987 with a maximum continuous rating of 1893 eshp (1412 kW), can be converted to a PW118B.[4]
PW118B
Certified in 1996 with a maximum continuous rating of 1892 eshp (1412 kW).[4]
PW119
No longer in service.[4]
PW119A
Certified in 1992 with a maximum continuous rating of 1948 eshp (1453 kW), can be converted to a PW119B.[4]
PW119B
Certified in 1993 with a maximum continuous rating of 1941 eshp (1448 kW), can be converted to a PW119C.[4]
PW119C
Certified in 1995 with a maximum continuous rating of 1941 eshp (1448 kW), can be converted to a PW119B.[4]
PW120
Certified in 1983 with a maximum continuous rating of 1787 eshp (1333 kW), can be converted to a PW121.[4]
PW120A
Certified in 1984 with a maximum continuous rating of 1892 eshp (1411 kW), can be converted to a PW121.[4]
PW121
Certified in 1987 with a maximum continuous rating of 2044 eshp (1524 kW), can be converted to a PW120.[4]
PW121A
Certified in 1995 with a maximum continuous rating of 1992 eshp (1465 kW).[4]
 
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.[4]
PW123AF
Certified in 1989 with a maximum continuous rating of 2261 eshp (1686 kW), can be converted to PW123.[4]
PW123B
Certified in 1991 with a maximum continuous rating of 2262 eshp (1687 kW), can be converted to a PW123.[4]
PW123C
Certified in 1994 with a maximum continuous rating of 2054 eshp (1532 kW), can be converted to a PW123 or D.[4]
PW123D
Certified in 1994 with a maximum continuous rating of 2054 eshp (1532 kW), can be converted to a PW123 or C.[4]
PW123E
Certified in 1995 with a maximum continuous rating of 2261 eshp (1687 kW), can be converted to a PW123.[4]
PW124
No longer in service.[4]
PW124A
No longer in service.[4]
PW124B
Certified in 1988 with a maximum continuous rating of 2522 eshp (1881 kW), can be converted to a PW123 or PW127.[4]
PW125
No longer in service.[4]
PW125A
No longer in service.[4]
PW125B
Certified in 1987 with a maximum continuous rating of 2261 eshp (1687 kW).[4]
PW126
Certified in 1987 with a maximum continuous rating of 2323 eshp (1732 kW) can be converted to a PW123 or PW126A.[4]
PW126A
Certified in 1989 with a maximum continuous rating of 2493 eshp (1859 kW), can be converted to a PW123 or PW127D.[4]
PW127
Certified in 1992 with a maximum continuous rating of 2619 eshp (1953 kW), can be converted to a PW127C,E or F.[4]
PW127A
Certified in 1992 with a maximum continuous rating of 2620 eshp (1954 kW), can be converted to a PW127B.[4]
PW127B
Certified in 1992 with a maximum continuous rating of 2619 eshp (1953 kW).[4]
PW127C
Certified in 1992 with a maximum continuous rating of 2880 eshp (2148 kW).[4]
PW127D
Certified in 1993 with a maximum continuous rating of 2880 eshp (2148 kW), can be converted to a PW127B.[4]
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.[4]
PW127F
Certified in 1996 with a maximum continuous rating of 2619 eshp (1953 kW), can be converted to a PW127M.[4]
 
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).[4]
PW127H
Certified in 1998 with a maximum continuous rating of 2880 eshp (2148 kW).[4]
PW127J
Certified in 1999 with a maximum continuous rating of 2880 eshp (2148 kW).[4]
PW127M
Certified in 2007 with a maximum continuous rating of 2619 eshp (1953 kW).[4]
PW150 Twin Pack
A proposed powerplant for the Airbus A400M Atlas;[5] two PW150-based engines would be used to drive a single propeller.[6] 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.[7]
PW150A
Certified in 1998-06-24 with a maximum continuous rating of 5071 SHP (3782 kW),[4] 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. On the Q400, it sports a larger, six-bladed 13.5 ft (4.1 m) Dowty R408 propeller that spins at slower rates of 1,020 rpm at takeoff and 850 rpm at cruise.[8]
ST18M
marine application for PW100
ST40M
marine application for PW150A

ApplicationsEdit

AircraftEdit

 
A PW120A fitted to a Canadian Forces CT-142

Other applicationsEdit

SpecificationsEdit

PW100/150 Series[9]
Series Thermo.
ESHP
Mech.
SHP
Prop.
max. RPM
Height Width Length Application
PW118 2,180 1,800 1,300 31 in 25 in 81 in Embraer EMB-120
PW120 2,400 2,100 1,200 31 in 25 in 84 in ATR 42-300/320, De Havilland Canada DHC-8-100
PW123/124 3,000 2,400 1,200 33 in 26 in 84 in De Havilland Canada DHC-8-200/DHC-8-300, Canadair CL-215T/CL-415
PW127 3,200 2,750 1,200 33 in 26 in 84 in An-140, ATR 42-400/500/600, ATR 72-210/500/600, CASA C-295, Il-114-100, Xian MA60
PW150 6,200 5,000 1,020 44 in 30 in 95 in De Havilland Canada DHC-8-400

Data from PW100,[10] PW150[11]

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[9]
  • Combustors: Reverse flow combustor[9]
  • Turbine: Single-stage low pressure and high pressure turbines, Two-stage power turbine[9]
  • Fuel type: PW150: Kerosene Jet A, A-1/JP8; Wide Cut Jet B/JP4; High Flash JP5/JP1
  • Oil system: Self-contained system[12]

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 alsoEdit

Related lists

ReferencesEdit

  1. ^ Trimble, Stephen (February 28 – March 5, 2012). "Return of the power turboprop: Turboprop engine duel strikes up for 90-seater". Flight International. No. 728. pp. 32–33. ISSN 0015-3710.
  2. ^ Schonland, Addison (25 Apr 2017). "Pratt & Whitney Canada – The Dominator". Air Insight Group. Retrieved 12 July 2020.
  3. ^ "Civil Turboshaft/Turboprop Specifications". www.jet-engine.net.
  4. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad ae af ag ah ai aj ak al Transport Canada Type Certificate Data Sheet Archived 2009-09-10 at the Wayback Machine
  5. ^ Moxon, Julian (17 March 1999). "CASA chosen for final assembly of Airbus Military transporter". Flight International. Toulouse, France. p. 22. ISSN 0015-3710.
  6. ^ 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.
  7. ^ 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.
  8. ^ Warwick, Graham (9 September 1998). "Turboprop - and proud of it". Flight International. ISSN 0015-3710.
  9. ^ a b c d "PW100/150 Turboprops". Pratt & Whitney Canada.
  10. ^ "PW100 Type certificate data sheet" (PDF). EASA. 4 June 2014. Archived from the original (PDF) on 31 January 2017. Retrieved 14 February 2017.
  11. ^ "PW150 Type certificate data sheet" (PDF). EASA. 19 November 2014.
  12. ^ ATR 42 72 Aircraft Maintenance Training Manual, chapter 71

External linksEdit