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-   -   The Biggest Jet Engines in History Are Finally Ready to Power Boeing's Biggest Plane (https://www.pprune.org/rumours-news/616933-biggest-jet-engines-history-finally-ready-power-boeings-biggest-plane.html)

FlyXLsa 4th Jan 2019 20:29

The Biggest Jet Engines in History Are Finally Ready to Power Boeing's Biggest Plane
 
Boeing is set to debut its biggest plane ever next month, and the 777X has finally been paired with the gargantuan GE9X engine that will propel its flight.
https://cimg3.ibsrv.net/gimg/pprune....5e1281cd33.jpg


https://www.popularmechanics.com/fli...x-777x-photos/

DaveReidUK 4th Jan 2019 21:09

I think we might have known that already. :O

tdracer 4th Jan 2019 21:15

Boeing is reportedly planning to roll it out in the next month or two, which I suspect many don't know.

FlyXLsa 4th Jan 2019 21:28


Originally Posted by DaveReidUK (Post 10352061)
I think we might have known that already. :O

Yeah but the PICTURE impressed me. :)

Imagegear 4th Jan 2019 21:31

Ahhh yes, the folding wingtip version :eek:

I don't care what the brochure says, that alone will keep me off the jet. At least the 787 gets there, even if it is with a numbum.

IG

tdracer 4th Jan 2019 21:44


Originally Posted by Imagegear (Post 10352078)
Ahhh yes, the folding wingtip version :eek:

I don't care what the brochure says, that alone will keep me off the jet. At least the 787 gets there, even if it is with a numbum.

IG

Better stay off those with retractable landing gear and moveable flaps too. You know what deathtraps those have proven to be.

DaveReidUK 4th Jan 2019 21:51


Originally Posted by tdracer (Post 10352094)
Better stay off those with retractable landing gear and moveable flaps too. You know what deathtraps those have proven to be.

I think there's a fairly crucial distinction between bits that are intended to move in flight and those that aren't meant to. :O

ironbutt57 4th Jan 2019 21:59


Originally Posted by DaveReidUK (Post 10352099)
I think there's a fairly crucial distinction between bits that are intended to move in flight and those that aren't meant to. :O


but these are "meant to be"

DaveReidUK 4th Jan 2019 22:12


Originally Posted by ironbutt57 (Post 10352102)
but these are "meant to be"

Yes, but the comparison was between those and folding wingtips, that aren't.

Do try to keep up. :O

tdracer 4th Jan 2019 22:17

It's a lot easier to keep things from moving in flight that aren't supposed to move, than to keep things moving in flight from moving when they're not supposed (or moving contrary to how they're supposed to)

tartare 4th Jan 2019 22:39

The SLUF and 'toom flew with wings folded.
The Tomcat could fly with asymmetric sweep.
So even in the event of pilot error, or some type of mechanical failure, surely there's no in flight worries about the new triple 7's last three metres on each side?
I'd be more concerned about the person sitting in Seat 0A forgetting to fold `em coming into the gate, and trading paint with someone or something else.
And no doubt there'd be all sorts of alarms and things to stop that happening...

Photonic 4th Jan 2019 23:32


Originally Posted by DaveReidUK (Post 10352099)
I think there's a fairly crucial distinction between bits that are intended to move in flight and those that aren't meant to. :O

C'mon, the USN was flying fighters with folding wings off carriers in WW2. I think they've probably worked out the kinks by now! :)

EEngr 4th Jan 2019 23:35


Originally Posted by Imagegear (Post 10352078)
Ahhh yes, the folding wingtip version :eek:

Folding wings? That's just some sort of crazy science fiction.
https://cimg2.ibsrv.net/gimg/pprune....51d0185ea2.jpg

Vernand 4th Jan 2019 23:51

Awesome engine, its so big it probably creates lift at certain angles.

tartare 5th Jan 2019 01:09

Don't get too close though... :sad:

lomapaseo 5th Jan 2019 01:15


Originally Posted by Vernand (Post 10352187)
Awesome engine, its so big it probably creates lift at certain angles.

hope so, it helps to know which way the loads are on the pylon when something breaks

Capn Bloggs 5th Jan 2019 01:15

Nice cap...


Originally Posted by Vernand
Awesome engine, its so big it probably creates lift at certain angles.

Ouch!! :) :)

kristofera 5th Jan 2019 02:10

tandem wing
 
The folding wingtip thing makes me wonder: will we at some point see large aircraft with tandem wings?

What would be the disadvantages with a forward mounted tandem wing instead of extending the wingspan?

More structural parts needed to mount the wings, more drag, forward wing possibly interfering with airflow to engines at certain AoA, what else...? Any advantages that could make it happen?

porch monkey 5th Jan 2019 02:46

EEngr. Great picture. What a magnificent machine. I've never seen that photo before. You got any more?

DHC4 5th Jan 2019 04:41

Composite fan blades on a metal tube, what will they think of next.


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