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Allison T56/Model 501-D

The Engine Specifications
Based on the T38, the T56 was designed for the C-130 Hercules.  First ordered in 1954, the T56 is still in production by Rolls-Royce.

Nearly 17,000 T56s and its commercial version, the 501-D, have been produced.

Compressor: 14-stage axial
Turbine: 4-stage
Mass flow: 32 lbs/sec
Pressure ratio: 9.25
Models Used by
T56-A-15: 4,508 hp (3362 kW)
T56-A-425: 4,910 hp (3661 kW)
501-D13: 3,750 hp (2,800 kW)
Boeing 377-SG Super Guppy
Convair CV-580
Grumman E-2 Hawkeye
Lockheed C-130 Hercules
Lockheed L-188 Electra
Lockheed P-3 Orion
Related Pages
More about Allison

page updated 07 April 2003



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Kenneth W Shanaberger 2000 - 2010