- Rolls-Royce Tay (turbofan)
The Rolls-Royce RB.183 Tay is a
turbofan engine, developed from the RB.163 Spey, using scaled down low-pressure components from the RB.211 to produce versions with abypass ratio of 3.1:1 or greater. The engine was first run in August 1984. [Gunston 1989, p.153.] The Tay family is used on a number ofairliner s and larger business jets, including the Gulfstream IV,Fokker 70 andFokker 100 , with a later version being used to re-engine Boeing 727-100s.Variants
Tay 611-8
Originally designated 610-8, all but one training engine have now been converted to 611-8 standard. The newest variant is the 611-8C which has a modified high pressure nozzle box, cast HP1 turbine blades, larger fan from the 650-15, structural by-pass duct and
FADEC .All Tays consists of a twenty-two blade titanium fan, 3 stage Intermediate pressure compressor (Same spool as the fan.), 12 stage High pressure compressor, 2 stage high pressure turbine, 3 stage low pressure turbine.
Thrust: 13,850 lbf (62 kN)Aircraft: Tay 611 entered service in 1987 on the Gulfstream IV/IV-SP, for which it is the exclusive powerplant.
Tay 620-15
The 620-15 is internally identical to the 611-8 and externally similar to the 650-15.
Thrust: 13,850 lbf (62 kN)Aircraft:
Fokker 70 from 1994,Fokker 100 from 1988Tay 650-15
Thrust: 15,100 lbf (67 kN)Aircraft: Originally designed to re-engine the BAC One-Eleven (650-14, only two made, both have since been converted to 650-15 standard.), the 650-15 entered service on the
Fokker 100 in 1989.Tay 651-54
The 651-54 is internally identical to the 650-15. The thrust increase comes solely from an adjustment to the Fuel Flow Meter.
Thrust: 15,400 lbf (69 kN)Aircraft: Boeing 727-100 from 1992. Conversion from three JT8D-7 to three Tay 651-54 was done by the now defunct Dee Howard Aircraft Maintenance Company in San Antonio Texas for the
United Parcel Service . Only one private 727 was converted, it is believed to be flying in Australia for a casino.pecifications (Tay 620-15)
"Data from:" [Rolls-Royce data sheet] [FAA Type Certificate Data Sheet] jetspecs
type=Twin-spool high bypass turbofan
length=94.7 in (2405.4 mm)
diameter=44 in (1117.6 mm) (fan diameter)
weight=3,310 lb (1501.4 kg)- Bypass ratio: 3.04
compressor=Single stage fan plus 3 stage LP compressor and 12 stage HP compressor
combustion=10 cannular combustion chambers
turbine=2 stage HP turbine, 3 stage LP turbine
fueltype=
oilsystem=
power=
thrust=13,850 lbf (62.82 kN)
compression=
aircon=
turbinetemp=735 degrees C (maximum continuous)
fuelcon=
specfuelcon=
power/weight=
thrust/weight=4.2References
Notes
Bibliography
* [http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/46c5ebf0369b23d786256ee60060ed8e/$FILE/E25NE.pdf FAA Type Certificate Data Sheet]
*Gunston, Bill. "World Encyclopedia of Aero Engines". Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
* [http://www.rolls-royce.com/civil_aerospace/downloads/regional/tay_620_650.pdf Rolls-Royce plc, Tay data sheet]External links
* [http://www.rolls-royce.com/civil_aerospace/products/regional/tay/default.jsp Rolls-Royce Tay]
- Bypass ratio: 3.04
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