Pratt & Whitney Canada PW300
Template:Short description Template:More footnotes
Template:Infobox Aircraft EngineThe 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.[1]
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.[2]
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.[3]
Variants
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- PW305A
- Template:Cvt variant used on the Bombardier Learjet 60.
- PW305B
- Template:Cvt variant used on the Hawker 1000.
- PW306A
- Template:Cvt variant used on the IAI Galaxy & Gulfstream G200.
- PW306B
- Variant used on the Dornier 328JET.
- PW306C
- Template:Cvt variant used on the Cessna Citation Sovereign.
- PW306D
- Template:Cvt variant used on the Cessna Citation Sovereign +.
- PW306D1
- Template:Cvt variant used on the Cessna Citation Latitude.
- PW307A
- Template:Cvt variant used on the Dassault Falcon 7X.[4] Originally Template:Cvt 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.[5]
- PW307B
- Variant used on the Bombardier Learjet 85.
- PW307D
- Variant used on the Dassault Falcon 8X.
- PW308A
- Template:Cvt variant used on the Hawker 4000 & Scaled Composites White Knight Two.[6]
- PW308C
- Template:Cvt variant used on the Dassault Falcon 2000EX/DX/LX.
Applications
- Cessna Citation Latitude
- Cessna Citation Sovereign
- Dassault Falcon 2000EX/DX/LX
- Dassault Falcon 7X
- Fairchild Dornier 328JET
- Fairchild Dornier 428JET
- Gulfstream G200
- Hawker 1000
- Hawker 4000
- Learjet 60
- Learjet 85
- Scaled Composites White Knight Two
Specifications (PW306B)
Data from Jane's all the World's Aircraft 1993–94[7]
General characteristics
- Type: Turbofan
- Length: Template:Cvt
- Diameter: Template:Cvt
- Dry weight: Template:Cvt installed
Components
- Compressor: 1-stage fan, 4-stage axial with 1-stage centrifugal high pressure compressor
- 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 Template:Cvt
Performance
- Maximum thrust: Template:Cvt for take-off or flat-rated at Template:Cvt up to Template:Cvt
- Cruise thrust: Template:Cvt at M0.8 at Template:Cvt
- Overall pressure ratio: Core pressure ratio: 15:1
- Bypass ratio: 4.5:1
- Specific fuel consumption: Template:Cvt at take-off
- Cruise s.f.c.: Template:Cvt
- Thrust-to-weight ratio: 5.26 at take-off power
See also
Comparable engines
Related lists
References
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- ↑ Optimization Studies for the PW305 Turbofan,Karanjia and Harvey, AIAA 90-2520,AIAA/SAE/ASME/ASEE 26th Joint Propulsion Conference,Orlando,FL,p.5
- ↑ Press release preview Template:Webarchive
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- ↑ [1] Template:Webarchive
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External links
Template:Pratt & Whitney Canada aeroengines Template:USAF gas turbine engines