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World's biggest jet engine takes off

CAPSLOCKSTUCK

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footage has revealed the moment that the world's biggest jet engine took to the skies for the first time, ahead of its planned maiden commercial flight in 2020.

The huge GE9X powerplant, which is as wide and tall as the fuselage of a Boeing 737, is being built for the latest version of the firm's long-haul 777, the 777X 'megaplane'.

General Electric has now begun flight trials of the prototype, after delays caused by technical problems stopped tests originally planned for late last year.

The GE9X was attached to the plane alongside smaller engines to allow engineers to put it through the motions of flight without risking the safety of passengers onboard.

It features a massive fan stretching 134 inches in diameter, more than 11 feet, and fits into a 14-and-a-half-foot nacelle.



A special Boeing 747 test aircraft flew from Victorville, California, for four hours with the new GE9X engine mounted under its left wing, dwarfing the plane's three other engines.

1521228550336.png


The engine will eventually power the 777X, a plane that will have the widest wingspan of any aircraft: 235 feet, five inches (71.8 metres), making it wider than four 53-foot (16-metre) semi-truck trailers parked end to end.

It is so big, Boeing has developed hinges on its wingtips. The hinges will fold up, allowing the plane to shorten its wingspan when it's rolling across airport taxiways, the first design of its kind on any commercial airliner.

The hinged wingtips will measure 12 feet, and locking pins will prevent them from folding during flight, Boeing told CNN.

Inside, the 777-9X will seat at least 400 passengers, 34 more than the 777-9X's competitor - the Airbus A350-1000.

The 777-9X cabin will be 16 inches (40 centimeters) wider than the A350-1000, Boeing says, allowing economy-class seat widths up to 18 inches (46 centimeters).


1521228660587.png


1521228700537.png


Boeing asked General Electric to develop an engine strong enough to power its 777X aircraft family, a new version of the 777 'mini-jumbo' with up to 406 seats.

It will have the largest front fan in the world, GE says, at 134 inches (11 feet) in diameter, while its inlet duct measures 18 feet (215 inches) by 12 feet (145 inches).

Ultra heat-resistant materials known as ceramic matrix composites (CMC) in the combustor and turbine can operate at temperatures up to 1,300°C (2,400°F).


1521228759619.png


This allows the firm's engineers to keep the heat higher inside the engine, without having to burn through fuel or emissions.

The advancement in 3D printing has also contributed to this cutting-edge engine, by allowing engineers to create more complex shapes, which were once impossible - including 3D printed fuel nozzles.

The new GE9X engine has 16 fourth-generation carbon-fibre fan blades at the front of the engine and feed air to the 11-stage high-pressure compressor. According to the firm, no other commercial engine has a pressure ration (27:1) that's higher.

Engineers also installed a fourth fuel tank to keep the engine from going thirsty.

Although GE9X has an impressive thrust generator of 100,000, the engine's predecessor, the GE90-115B, holds the record of 127,500 pounds.



 

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You could drive a bus into that engine, I believe!
 
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I can imagine the pilot doing donuts on taxi tests. :roll:
 
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It's like the plane only worksout its left bicep.
 

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You could drive a bus into that engine, I believe!

. Its front fan spans a full 11 feet in diameter (3.35 meters), a world record. The engine also has 3D printed fuel nozzles and the most extensive use of parts made from lightweight and ultra heat-resistant materials called ceramic matrix composites (CMCs)

The engine also includes fourth-generation carbon-fibre fan blades at the front of the engine that feed air into an 11-stage high-pressure compressor with a 27:1 pressure ratio, which also boosts the engine’s efficiency. No other commercial engine in service has a pressure ratio that’s higher.
 
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The 777X series will also use folding wingtips, a first in commercial aviation. This is in order to keep the wingspan within a certain classification. I suppose if it was bigger it would fit into the same class as an A380?

Boeing is also going to get to work on the 797, a spiritual 767 and 757 replacement. After that it seems like in the 2020s they will get to work to (finally!) replace the 737 series. Boeing an GE will sure be busy.

Rolls Royce... well I suppose they better fix their blade cracking and disintegrating engines!
 

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I can't stop laughing at those pictures. It's so wrong.

That said, I wonder if GE has long term plans to install these on the 747. Airlines have complained that they can't install bigger, more efficient engines on the platform. GE maybe created the solution.
 
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Rolls Royce... well I suppose they better fix their blade cracking and disintegrating engines!
The metallurgy required to create those blades is incredible and the new ones are basically a single crystal grown to that shape, so when there's the slightest flaw, the cracking is a real problem
 

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Okay, I have to ask even if its stupid. If they had to
Engineers also installed a fourth fuel tank to keep the engine from going thirsty.
for a 4hr test flight with just one. Wont they have to re-work the plane platform design
 

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Im sitting here hoping they went to 110 % on that one and shut the other 3 down.
 
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That is one big mf engine. :eek:

Notice how it's pointing upwards a bit? I reckon they've done that to stop it scraping the ground due to its size. I presume the 777x wings sit higher so won't need to do this.

These engines really are enormous. I stood next to a Trent 800 or Trent 1000 in a museum a while back - huge engines. Awesomely impressive.
 
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looks like these idiots will have a harder time doing stupid things with this plane taking off...or will atleast have to start wearing life vests

 
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Is this what people ment when saying one of my engines is bigger than yours.

I need 3 of then for my car. One on root anf one on both sides
 
Low quality post by Norton

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Testing what a low quality post sign looks like in this thread

Stick to the subject folks...
 

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lets not make work for the mods please guys, im sure they are all trying to enjoy the qualifying session for Motogp just like me and could do without the distraction.
 
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I can't stop laughing at those pictures. It's so wrong.

That said, I wonder if GE has long term plans to install these on the 747. Airlines have complained that they can't install bigger, more efficient engines on the platform. GE maybe created the solution.

The way I see it, a lot of airlines are moving away from 4 engined aicrafts, and at the current production rate for the 747-800 the production may stop in 4 years due to no orders.
The point of having 4 engines is that you have no ETOPS limit - so I doubt anyone will aim for a twin engine 747 if you have 777 with huge amount of orders.
 

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The way I see it, a lot of airlines are moving away from 4 engined aicrafts, and at the current production rate for the 747-800 the production may stop in 4 years due to no orders.
The point of having 4 engines is that you have no ETOPS limit - so I doubt anyone will aim for a twin engine 747 if you have 777 with huge amount of orders.
On top of that, most of the worlds airlines are ending their use. Most of U.S. airlines already have quietly had their last 747 flights.
 

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On top of that, most of the worlds airlines are ending their use. Most of U.S. airlines already have quietly had their last 747 flights.

The last US based one ceased operating on 3 Jan 2018

plenty of operators still fly them though

1521326809190.png
 

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