- Allison T56
The Allison T56 is a single shaft, modular design military
turboprop with a 14 stage axial flow compressor driven by a four stage turbine. It was originally developed by theAllison Engine Company entering production in 1954, and is now produced under Rolls-Royce which acquired Allison in1995 . The commercial version is designated 501-D. Over 18,000 engines have been produced since 1954, logging some 200 million flying hours.Variants
Commercial
*Series I
**501-D13,A, D, H
*Series II
**501-D22
**501-D36A (non-type certified)
*Series III
**501-D22A, C, GMilitary
*Series I
**T56-A-9D, E
*Series II
**T56-A-7A, B
**T56-A-10WA
*Series III
**T56-A-14, LFE
**T56-A-15, LFE, GFE
**T56-A-16
**T56-A-425
*Series IV
**T56-A-427
**T56-A-427A Is next for the Advanced HawkeyeApplications
Military
Notable applications include:
*Lockheed Martin C-130A-H, R, and T Hercules
* Lockheed MartinP-3 Orion
*Northrop Grumman E-2 Hawkeye
* Northrop GrummanC-2 Greyhound Civilian
Notable applications include:
* Convair 580 and Convair 5800
* Lockheed L100 Hercules
*Lockheed L-188 Electra pecifications (T56 Series IV)
jetspecs
type=Turboprop
length=146.1 in (3,711 mm)
diameter=27 in (690 mm)
weight=1,940 lb (880 kg)
compressor=14 stage axial flow
combustion=6 cylindrical flow-through
turbine= 4 stage
fueltype=JP8 2412 pounds per hour
oilsystem= 2 systems (1 each for power section and reduction gearbox)
power=5,350 shp (3,915 kW) limited to 5,100
thrust=
compression=14.5:1
aircon=240–280 lb/s (110–130 kg/s)
turbinetemp=860 c
fuelcon=
specfuelcon=
power/weight=2.75:1 (shp/lb)
thrust/weight=References
External links
* [http://www.rolls-royce.com/defence_aerospace/products/transport/t56/default.jsp T56 page at Rolls-Royce website]
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