EA772LR From United States of America, joined Mar 2007, 2836 posts, RR: 10 Posted (6 years 3 weeks 17 hours ago) and read 6004 times:
Does anyone on here have any crazy amazing facts about the GE90-110/115B? We all know the thrust numbers and technical info, but what about any other cool facts. (Kinda like on Boeing's homepage with their fun facts about their aircraft.) Just a thread to break up the monotany.
We often judge others by their actions, but ourselves by our intentions.
Viscount724 From Switzerland, joined Oct 2006, 21679 posts, RR: 23 Reply 3, posted (6 years 3 weeks ago) and read 5248 times:
Quoting Spaceshipone (Reply 2): Stated on the Boeing Everett tour while taxiing by a B-52:
A single 777 engine has more thrust than all eight engines on the B-52 combined.
That was true for early B-52s but not for the last couple of of models, including those still in service, equipped with P&W TF-33 turbofans (military version of the JT3D on most 707s and DC-8s). I believe the TF-33 on the B-52 has about 17,000 lbs of thrust, or 136,000 lbs. for the 8 engines combined. Still not that much more than a single GE90-115B!
JetMech From Australia, joined Mar 2006, 2589 posts, RR: 53 Reply 9, posted (6 years 2 weeks 4 days 7 hours ago) and read 4596 times:
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.
GEnxPower From United States of America, joined Apr 2005, 121 posts, RR: 0 Reply 10, posted (6 years 2 weeks 4 days 5 hours ago) and read 4469 times:
Just very recently, the GE90-110/115B reached its 3 years Entry Into Service anniversary.
- 3 years of service and fleet leader has a little bit more than 3,000 cycles... that's amazingly over 1000 cycles per year average for a long ranger like 777-300ER
- 1,000,000 flight hours mark also passed, and STILL not a single IFSD or engine related rejected takeoff.
- Dispatch reliability is 99.96%.
Great engine! GEnx has alot of do to go one step further and better than this boy!
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