Space/Science — HabitableZone

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According to Wikipedia...

B52 Pratt & Whitney TF33s (total thrust 8 × 17,000 lb) = 136,000 lb

Here

A 66,500 lbf (296 kN) thrust version (GEnx-2B67) will be used on the 747-8

Here

Not sure what the difference might be between "lb" and "lbf".

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