|Quoting EA772LR (Thread starter):|
We all know the thrust numbers and technical info, but what about any other cool facts.
But technical facts are fun! GE
states that at take-off power, the fan is spinning at 2552 RPM. GE
also states that the GE90-115B delivers an equivalent of 145,000 hp (108,126 kW). Assuming this to mean the maximum power delivered by the fan at take off conditions, there is about 298,415 ft-lb (404,597 Nm) of torque being delivered by the LP
turbine to the fan under these conditions. The LP
turbine would probably need to deliver more torque than this to the LP
spool, as it also needs to provide power to the booster section. IIRC, GE
had to develop an new alloy for the LP
shaft to withstand this phenomenal amount of torque.