PW300
PW308 used on the WhiteKnightTwo
Type Turbofan
National origin Canada
Manufacturer Pratt & Whitney Canada
First run 1988[1]
Major applications Cessna Citation Latitude
Cessna Citation Sovereign
Dassault Falcon 2000
Dassault Falcon 7X
Fairchild Dornier 328JET
Gulfstream G200

The Pratt & Whitney Canada PW300 series is a family of turbofan jet engines developed by Pratt & Whitney Canada specifically for business jet applications.

Design and development

The PW 300 series has been developed in partnership with MTU who are responsible for the low pressure turbine.

The first variant, the PW305A, has the following configuration and was designed with a core flexible enough for engines with take-off thrusts from 20 kN to 31 kN (4,500 to 7,000 lb): a single-stage fan driven by a three-stage low pressure turbine, supercharging a four-stage axial/single-stage centrifugal high-pressure compressor, driven by a two-stage high-pressure turbine. An annular combustor is used. There is no forced mixing before the bypass and core streams leave the engine through a common nozzle. The engine is controlled with a dual channel Full Authority Digital Engine Control (FADEC) system.[2]

The PW307A is a new centre-line engine developed specifically for a tri-jet application on the Dassault Falcon 7X. The PW307 was certified by Transport Canada in March 2005.

The PW308A has been chosen to power the Scaled Composites White Knight Two, the launch aircraft for Virgin Galactic's SpaceShipTwo.[3]

Unscheduled interventions went from 85% in 2015 to 20% in 2017, driving up the PW307 availability thanks to Pratt's digital platform, and engine dispatch reliability is at 99.4% for the Falcon 7X/8X powered by the PW307.[4]

Variants

Two of the three PW307A installed on the Dassault Falcon 7X
One of the two PW308C of a Falcon 2000S
PW306 fan, Cessna Citation Latitude
PW305A
20.81 kN (4,680 lbf) variant used on the Bombardier Learjet 60.
PW305B
23.41 kN (5,260 lbf) variant used on the Hawker 1000.
PW306A
25.36 kN (5,700 lbf) variant used on the IAI Galaxy & Gulfstream G200.
PW306B
Variant used on the Dornier 328JET.
PW306C
25.67 kN (5,770 lbf) variant used on the Cessna Citation Sovereign.
PW306D
26.28 kN (5,910 lbf) variant used on the Cessna Citation Sovereign +.
PW306D1
25.6 kN (5,800 lbf) variant used on the Cessna Citation Latitude.
PW307A
28.49 kN (6,400 lbf) variant used on the Dassault Falcon 7X.[5] Originally 27.1 kN (6,100 lbf) growth version of the PW306, smaller than the PW308, featuring swept-blade fan, increased core airflow, low NOx emissions combustor, increased turbine capacity and a more efficient exhaust mixer; integrated propulsion system including Macchi/Hurel Dubois nacelle and thrust-reverser; certification scheduled for the end of 2004.[6]
PW307B
Variant used on the Bombardier Learjet 85.
PW307D
Variant used on the Dassault Falcon 8X.
PW308A
30.69 kN (6,900 lbf) variant used on the Hawker 4000 & Scaled Composites White Knight Two.[7]
PW308C
31.14 kN (7,000 lbf) variant used on the Dassault Falcon 2000EX/DX/LX.

Applications

Specifications (PW306B)

Data from Jane's all the World's Aircraft 1993–94[8]

General characteristics

  • Type: Turbofan
  • Length: 2,062 mm (81.2 in)
  • Diameter: 970.3 mm (38.20 in)
  • Dry weight: 450 kg (990 lb) installed

Components

  • Compressor: 1-stage fan, 4-stage axial with 1-stage centrifugal HPC
  • Combustors: Annular
  • Turbine: 2 stage high pressure, 3 stage low pressure turbines.
  • Fuel type: Aviation Kerosene such as JP-1, JP-4, JP-5 or CPW-204
  • Oil system: Pressure spray integral system with gear pump and scavenge, capacity 2.11 US gal (1.76 imp gal; 8.0 L)

Performance

See also

Comparable engines

Related lists

References

  1. ↑ "V.2500 flies in May". Flight International. 8 April 1988.
  2. ↑ Optimization Studies for the PW305 Turbofan,Karanjia and Harvey, AIAA 90-2520,AIAA/SAE/ASME/ASEE 26th Joint Propulsion Conference,Orlando,FL,p.5
  3. ↑ Press release preview Archived 2008-05-17 at the Wayback Machine
  4. ↑ Matt Thurber (October 9, 2017). "PurePower PW800 Nearing Entry Into Service". AIN.
  5. ↑ "Type certificate data sheet No. A59NM" (PDF). FAA. June 27, 2016. Archived from the original (PDF) on December 5, 2017. Retrieved April 28, 2017.
  6. ↑ Graham Warwick (13 Nov 2001). "Latest P&WC turbofan set to power Dassault Falcon 7X corporate jet". Flight International.
  7. ↑ Archived February 21, 2010, at the Wayback Machine
  8. ↑ Taylor, Michael J.H.; Lambert, Mark; Munson, Kenneth, eds. (1993). Jane's all the World's Aircraft 1993–94 (84th ed.). Coulson, Surrey, UK: Jane's Information Group. p. 604. ISBN 978-0710610669.
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