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The largest engine of the world gets ready to power B777X

With a fan of composite material more than 11 feet (3.35 meters) in diameter, General Electric GE9X is the largest engine in the world. This is the new engine of the Boeing 777X. It will be the largest and most efficient dual-aisle aircraft operating in the world, according to the North American manufacturer ( More...

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Michael Hope 11
Just for a size comparison, the propeller diameter for a Douglas DC-3 was 11 feet, 6 inches nominal.
Michael Hoare 5
Does this heading "Largest engine of the World" read correctly....surely it should read " Largest engine IN the World.Correct me if I'm wrong but as others have said some of the "editing" that is assumed done is pretty poor.
"This giant of the skies has a wingspan of about 326 feet (72 meters), . . . ."
Don't think so -- 72 meters is about 236 feet (dyslexia is a thing terrible).
Airports require airliners to fit in a 80 meter x 80 meter square, so a 326' wingspan won't work (maybe Boeing has introduced folding wings?!)
Then again, that could explain why that B777 pilot clipped wings with an A330 at JFK.
The A380 barely meets the 80x80 limit. (I still think someone beat the A380 with an "ugly stick.")
Roy Hunte 5
Ammmm in case you were wondering the 777X will have folding wingtips.
Tom Novak 2
True, it's 236 feet or 72 m. 72 m. on flight, 65 m. on the ground. 7m, foldable wing space.
So do they fold the wings when taxing after landing?
Tom Novak 2
Yes, that's the aim I guess depending on the environment.
Eventually one is going to take off with folded wings. It happens on aircraft carriers it will happen at airports
Shenghao Han 1
That is why you have 2 pilots instead of 1 and preflight checklist.
Pre-flight is a lot stricker after several pilots trying to takeoff with flaps up
It will occur. Do you know how many folks are on the flight deck of a carrier during operations. It happens with preflight. It will happen. Just hope this giant can fly with folded wings. Hey, I got it, put a chime and a voice that says "Hey, your wings are folded". Just like "To low pull up"
Faisal Nahian 1
I totally agree with you, Steven. Some pilots will forget the basics, sooner or later. We are human and we are bound to make silly mistakes. Just hope this can take off with folded wings or even cruise without causing a huge issue, in case pilots mistakenly folds them in the air.
captleo 1
I had a friend pilot that on an approach to land the gear up horn went off and he applied more power thinking that he was loosing lift and then he landed with the gear up.
glen krc 1
The good thing is the pilots will have a number of window-seat passengers as extra eyes (hopefully they'll have loud voices).
captleo 1
nwilcox 1
The article does say 236 feet, doesn't it?
Griff Griffin 4
Time to switch to anti-grav.
Gary Olson 0
Why not !! ?? It's already in use.
Certainly not the "largest dual aisle aircraft aircraft operating in the world". Most fuel efficient possibly but I do not believe its MTOW is higher than the A388
30west 6
Andy, You are correct. The Airliner Watch website mis-quoted the Boeing website which describes the 777X as the "..... largest and most efficient twin-engine jet ....", not "dual-aisle".
Kevin Murtha 2
True; I suspect they meant "twin engine", not "dual aisle".
Actually, the title of "largest engine in the world" belongs to this monster: Designed to provide the motive force for a variety of supertankers and container ships, it comes in a whopping 14 cylinder version. The cylinder bore is 38 inches and the stroke is just over 98 inches. Each cylinder displaces 111,143 cubic inches (1820 liters) and produces 7780 horsepower. Total displacement comes out to 1,556,002 cubic inches (25,480 liters).

At a length of 89 feet and a height of 44 feet, the total engine weight is 2300 tons - the crankshaft alone weighs 300 tons.

The RTA96C-14 can achieve a maximum power output of 108,920 hp at 102 rpm and astonishingly, at maximum economy the engine exceeds 50% thermal efficiency.
Jeremy kehler 2
Why doesn't Airbus stick four of these on the A380 to keep Emirates et al happy?
Leandro Vale -1
right?! hahahahah
Robert Dale 2
What next--Impulse Engines? Good show Boeing!!! Hard yet for me to imagine that this beast has double the thrust of all 4 of my old J-57's hung on my KC-135's.
Some people are just naturally cynical...
Geoff Arkley 1
Anyone know the thrust?
tedtimmons 1
For more engine info:
Guy Lessard 1
What kind of thrust this baby will put out ..? 777/300 had 115,000 per engine..
Neil Morrison 1
Any footage of the test flight or is that sort of thing restricted.
Elliot Cannon 1
Not enough motors.
Mike Stirewalt -8
Not a word about thrust. "Largest Engine . . ." means to me a metric in terms of power generated, not how wide the damn thing is.

This shallow bunch of mindless blather on this newsletter is ending. You've been better than many, but the trend is clear.
Torsten Hoff 13
I don't see how you can find the description misleading. "Largest" is in reference to the engine's size, "most powerful" would be a reference to its thrust.


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