Allison Gas Turbines
XF-84H
Propulsion
by John Leonard
Rolls-Royce Allison 250 Images from AirVenture 2009
photos by Tim Wheat
Rolls-Royce (Allison) 250-B17F cutaway. 450 hp @ takeoff, 380 hp @ normal cruise, 377 hp @ 90%, 314 hp @ 75%, pressure ratio 7.9:1, output shaft 2,013 rpm @ 100%, gas generator 50,970 rpm @ 100%, power turbine 33,290 rpm @ 100%, specific fuel consumption ranges from 0.613 lb/shp-hr @ takeoff t0 0.673 lb/shp-hr @ 75% cruise, 205 lb dry weight.
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