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Lycoming T55
The Engine Specifications
 
The T55 is a larger version of the T53, designed for U.S. Army helicopters.  Design work began in 1954.  Over 5 million hours  have been flown by 3,600 T55 engines (as of 1998).
Turboshaft
Compressor: 7-stage axial, 1-stage centrifugal
Turbine: 2-stage gas generator, 2-stage free
Pressure ratio: 8.2
 
Models Used by
 
T55-L-11A: 3,750 hp (2796 kW)
Boeing Vertol CH-47 Chinook
 
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page updated 26 April 2003

 

  

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