First Entered Service
2011
Fan Diameter (in)
111.1 (-1B) / 104.7 (-2B)
Base Engine Length (in)
184.7 (-1B) / 169.7 (-2B)
Weight (lbs)
13,552 (-1B) / 12,397 (-2B)
Takeoff Thrust (lbf)
69,800-76,100 (-1B) / 66,500 (-2B)
100% RPM (rotor speed)
LP 2560, HP 11,377 (-1B) / LP 2835, HP 11377 (-2B)
Thrust to Weight Ratio
5.15 - 5.62 (-1B) / 5.36 (-2B)
Takeoff Bypass Ratio
8.8:1-9:1 (-1B) / 8:1 (-2B)
Takeoff Overall Pressure Ratio
43.8:1-47.4:1 (-1B) / 44.7:1 (-2B)