Back to the Purdue AAE Propulsion main page. Back to the Turbofan Engines page.

Allied Signal


The 731 has been in production since 1972, and has powered 20 varieties of air- craft, mostly business jets. Here we present the models with the least and most thrust, though there is a range in between. It has a single-stage fan, a 4-stage axial compressor, and a centrifugal high-pressure compressor. TFE731-20, -40, -60
Engine statistics
Specification -2 -60
Application Business Jets
T/O Thrust 3500 lb 5000 lb
T/O SFC 0.493 lb/hr/lb 0.405
Cruise Thrust 755 lb 1120 lb
Cruise SFC 0.790 lb/hr/lb 0.679
Bypass Ratio
Pressure Ratio 13 22
Length 49.7 in 72 in
Dia 39.4 42.4
Weight 734 lb 988 lb