I want to compare some recent turbofan engines in terms of fuel efficiency, particularly the PW535A and FJ44-4.
I found the SFC for the PW535A to be 0.44 lb/h/lbf. I couldn't find anything on the FJ44-4, except for an earlier model. The FJ44-3A has a SFC of 0.456 measured in kg/kW*h.
Firstly, how can I effectively compare these? I tried rearranging the units so they could immediately be compared but kept ending up with laughably different values.
Furthermore, where might I be able to find data on the FJ44-4?