The 1000G.
Geared Fan - 3 stage LP compressor - 8 stage HP compressor - combustion chamber - 2 stage HP turbine - 3 stage LP turbine.
LEAP 1A.
Fan - 3 stage LP compressor - 10 stage HP compressor - combustion chamber - 2 stage HP turbine - 7 stage LP turbine.
The leap is is not a geared fan so I assume has to extract a lot of energy to spin the fan, low RPM high torque, while the Pratt will have high RPM low torque to spin the gear assembly.
The RPM of the LP shafts should be vastly different seeing the gear ratio is around 3:1 on the Pratt.
Last edited by SMOC; 5th Sep 2014 at 09:32.