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Stitch
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GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:11 am

From: http://www.flightglobal.com/Articles...s's+A350+vision+takes+shape+.html

Quote:
Andries says that the GEnx would be offered for the A350 at a rating of 87,000lb thrust (387kN). This would match the Trent XWB, which R-R is optimising at this rating for the A350-900, and from which it will offer a derate to 75,000lb for the -800.

However, while GE will derate its GEnx offering similarly for the -800, it is not prepared to join R-R on the A350-1000 with a 95,000lb-thrust version.

So it looks like GE should be able to provide more then sufficient thrust for the 787-10, as should RR.
 
dw747400
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:31 am

It will be interesting to see if the 787-10 comes to fruition. I wonder if, from the Airbus perspective, they are looking forward to the big GEnx or if it is a threat because it enables a 787-10.
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:37 am

Quoting Dw747400 (Reply 1):
It will be interesting to see if the 787-10 comes to fruition.

It will happen. Now that engine thrust is no longer an issue, I imagine it's coming down to Boeing working with airlines on how much of an advancement they want (in other words, do Boeing need to re-engineer the landing gear to support more then 560,000lbs MTOW).

Quoting Dw747400 (Reply 1):
I wonder if, from the Airbus perspective, they are looking forward to the big GEnx or if it is a threat because it enables a 787-10.

Well Airbus has little choice. They need the GEnx to help sell the A358 and A359 and as those two models have grown in size and weight, they need more powerful engines to drive them, which helps Boeing offer more capable 787 models.
 
Werkur767
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:41 am

Sure they are looking forward to the big GEnx, 787-10 maybe will be fruition, the 787-9 is a reality for 2010, the 767 is old now for many airlines around the world, the 787 is a new aircraft that will repalce the 767, the design shows the thrust variant will be big, and for a high range, GEnx maybe can be used sooner, on 787-9s.

Regards,
Werner
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dw747400
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:43 am

I understand the GEnx is important to the 359, but I still wonder what the better market position would be: an A359 with one engine type competing against the 772, or an A359 with two engine types competing against a 787-10.

Ultimately it should make the A350/787 tussle that much more fun. Any idea when a 787-10 could be launched/delivered given this update?
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baron95
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:47 am

What thurst level has Boeing/GE settled on for the 787-9? Has that been finalized yet?
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DfwRevolution
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:48 am

Quoting Dw747400 (Reply 1):
It will be interesting to see if the 787-10 comes to fruition

Given that Boeing has already granted authority to offer the 787-10, I think this latest news all but guarantees a 787-10 launch.

The only real question is when? Before Le Bourget 2007?
 
jacobin777
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:49 am

Quoting Dw747400 (Reply 4):
I understand the GEnx is important to the 359

Its more important to the A358.....GE is still not completely sure about the A359 and is completely out for the A350-1000
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ual747-600
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:07 am

Well at least we can do one comparison and that is the 787-900 vs A350-800.

Boeing 787-9 Info:

Seating:
250 to 290 passengers

Range:
8,600 to 8,800 nautical miles (15,900 to 16,300 km)

Configuration:
Twin aisle

Cross Section:
226 inches (574 centimeters)

Wing Span:
197 feet (60 meters)

Length:
206 feet (63 meters)

Height:
56 feet (17 meters)

Cruise Speed:
Mach 0.85

Maximum Takeoff Weight:
540,000 lbs (244,940 kg)

Program milestones:
Entry into service in late 2010


Airbus A350-800 Info:

Seating:270 (3 class) passengers

Range:
8,500 (15,730)

Configuration:
Twin aisle

Cross Section:
232 inches

Wing Span:
210 feet

Length:
198.5 feet (60.5 meters)

Height:
55.5 feet (16.9 meters)

Cruise Speed:
Mach 0.85

Maximum Takeoff Weight:
245 tons

Program milestones:
Mid-2014

So, if the 787-900 is >2 meters longer, don't you have to assume it can carry more pax in equivalent configurations. Looks like it (787) will have slightly more range also.

Thoughts?

UAL747-600
 
Werkur767
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:15 am

The 787-9 i think is the wiiner in the comparisons, because they had more efficiency, shows a better range, in this almost equal positions!

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Werner
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WINGS
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:17 am

How would this impact Boeing's ability to offer the B787-10 at an earlier date? Since the A359 will only be ready in mid 2013.

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Wings
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CJAContinental
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:21 am

Still, the 787-10, if it does arrive, will arrive at least 4-7 years later, the 777's market is just too good.
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:24 am

Quoting Dw747400 (Reply 4):
I understand the GEnx is important to the 359, but I still wonder what the better market position would be: an A359 with one engine type competing against the 772, or an A359 with two engine types competing against a 787-10.

I believe the A359 with two engine types is better, as it allows them to appeal to 777 and A340 operators using GE or RR powerplants.

Quoting Dw747400 (Reply 4):
Ultimately it should make the A350/787 tussle that much more fun. Any idea when a 787-10 could be launched/delivered given this update?

2012 is the most often quoted date.

Quoting Baron95 (Reply 5):
What thrust level has Boeing/GE settled on for the 787-9? Has that been finalized yet?

The current GEnx maxes out at 75,000lbs so I imagine that is what is being offered on the 787-9 since they decided to make the 787-9IGW MTOW the base specs.

Quoting WINGS (Reply 10):
How would this impact Boeing's ability to offer the B787-10 at an earlier date? Since the A359 will only be ready in mid 2013.

Well it should mean GE should be able to support a 2012 launch date for the 787-10...
 
baron95
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 5:25 am

Quoting UAL747-600 (Reply 8):
So, if the 787-900 is >2 meters longer, don't you have to assume it can carry more pax in equivalent configurations. Looks like it (787) will have slightly more range also.

Not necessarilly. 2m is not a significant ammount. Things like tail sweep angle and tail cone length can account for the difference without providing more passenger space.

I, for one, would like to see info on cabin dimensions (floor are, interior width at seat and eye level, interior length, etc).
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Devilfish
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 9:30 am

Quoting Stitch (Reply 12):
Well it should mean GE should be able to support a 2012 launch date for the 787-10...

As RR is seeing a 2010 first engine run for their Trent XWB.....

http://www.flightglobal.com/Articles...eleases+new+data+on+Trent+XWB.html

Quote:
"R-R plans to solidify the design in late 2008 or early 2009, and expects to begin cutting metal for the first developmental Trent XWB in 2009.

The engine will make its first test run in 2010."
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zvezda
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 10:43 am

87,000 lbs of thrust is sufficient for a 625,000 lbs MTOW. That would be enough to provide a B787-11 with well over 8000nm range (with two belly tanks). Note that the limit of the current wing (after strengthening) is about a 640,000 lbs MTOW. With a strengthened wing and upgraded undercarriage (including two more wheels), a B787-9ER, B787-10ER, B787-11, and B787F are all now possible.

Quoting Dw747400 (Reply 4):
Any idea when a 787-10 could be launched/delivered given this update?

Launch could be as early as next month. EIS would probably be 2012.

Quoting Baron95 (Reply 5):
What thurst level has Boeing/GE settled on for the 787-9? Has that been finalized yet?

75,000 lbs.

Quoting DfwRevolution (Reply 6):
The only real question is when? Before Le Bourget 2007?

The B787-10 launch should be not later than Le Bourget, perhaps sooner.
 
Lumberton
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RE: GEnx Will Be Offered In 87,000lb Thrust Varian

Tue Dec 12, 2006 11:55 am

Quoting UAL747-600 (Reply 8):
Boeing 787-9 Info:
Maximum Takeoff Weight:
540,000 lbs (244,940 kg)

Airbus A350-800 Info:
Maximum Takeoff Weight:
245 tons

That's a 50,000 lbs difference! What accounts for it? Pax, fuel?
"When all is said and done, more will be said than done".
 
flyabunch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 12:09 pm

Quoting Lumberton (Reply 16):
That's a 50,000 lbs difference! What accounts for it? Pax, fuel?

I don't think there is really any difference. I am pretty sure that the 245 ton Airbus figure is "metric tons" which would mean that the weights are damn near identical.

Mike
 
Lokey123
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 12:20 pm

Quoting Zvezda (Reply 15):

Launch could be as early as next month. EIS would probably be 2012.

Got a report from someone who attended a Boeing session on the 787 last week.

Boeing is stating an end of 2012 roll out for the 787-10.

Additionally, I was told that there is currently no plan to address connectivty on the airplane, with the demise of Connexion by Boeing. Boeing is said to be aggressively working the issue but customers with early slots are very concerned as a plan would most likely not be in place to address their needs.

There is currently no plan to ensure production quality to customers, they're still trying to work on that one too.

Last but not least, and don't take my numbers to be exact please, it was said that the airplane is overweight by 7000 lbs. Now this obviously conflicts with what Scott Carson said last week so i don't think that number is accurate at all.

Sorry if all of this has been stated already.
 
zvezda
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 1:03 pm

Quoting Zvezda (Reply 15):
87,000 lbs of thrust is sufficient for a 625,000 lbs MTOW.

Oops! I just realized that's wrong. The calculation is more complex than I was thinking at 5:20 local time. Possible MTOW would be lower.

Here's the theory: Assuming the wing remains the same, Vlof increases with the squareroot of the TOW. The higher Vlof must be achieved in about the same distance, so thrust must be increased (linearly with Vlof) in order to accelerate faster. However, thrust must also be increased (linearly) to overcome the higher inertia of the higher TOW.

So, unless I'm wrong again, the thrust required is proportional to the TOW^1.5. Can anyone confirm that?
 
baron95
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 1:06 pm

Is RR really capable of overlap development of three widebody Trent family/baselines for A380 (Trent 900), 787 (Trent 1000) and A350 (Trent XWB), while at the same time investing in the next gen Trent narrowbody line?

Sounds like a lot. GE, on the other hand has the CEnx with one core/baseline for 787/748 (yes, I know there are slight differences bewtween them) and the narrowbody project to worry about.

I like GE's hand better - particularly since they have already worked at 115Klbbs and higher and are now pulling back for their GEnx. RR will have to flirt with 100Klbs for the first time ever for the A350-1000.
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DfwRevolution
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 1:10 pm

Quoting Lokey123 (Reply 18):
Last but not least, and don't take my numbers to be exact please, it was said that the airplane is overweight by 7000 lbs. Now this obviously conflicts with what Scott Carson said last week so i don't think that number is accurate at all

There have been persistent reports that the 787-8 is 2-3 tons over Boeing's internal weight targets, but still on track to meet the specifications sold to customers.

This doesn't necessarily conflict with Scott Carson's statement that the -8 was ahead of SFC targets by around 2%, as Boeing may have found ways to compensate in other areas.
 
jacobin777
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 2:02 pm

Quoting Zvezda (Reply 19):
So, unless I'm wrong again, the thrust required is proportional to the TOW^1.5. Can anyone confirm that?

IIRC, its 1.3-1.5..so your numbers would be correct..
"Up the Irons!"
 
jben
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 2:29 pm

RR is quite capable of 3 projects at once. In fact, it's only really 2, you may have read recently that RR stood down the Trent 900 line. Also, there is no sign that RR is behind on the Trent 1000, infact both GE and RR started their test programs exactly on time!

It's also different because RR is offering the same engine across the A350XWB program.

As for going over 100k, it's already been done in the Trent 8104 (which sadly fell because of RR's unwillingness to enter a risk sharing agreement with Boeing), but it was tested to over 115k.

Also as i've stated before, people forget the engine weights. On a 772ER, comparing the GE94B and the Trent 895, the aircraft powered by the Trent will weigh 7,600lbs less.
 
FriendlySkies
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 2:49 pm

Quoting Lokey123 (Reply 18):
it was said that the airplane is overweight by 7000 lbs.

Last I heard it was 700 lbs? Maybe an extra zero found it's way in...
 
baron95
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 3:44 pm

Quoting Jacobin777 (Reply 22):
you may have read recently that RR stood down the Trent 900 line.

But they'll have to continue the EIS development at some point, no?

Quoting Jben (Reply 23):
a 772ER, comparing the GE94B and the Trent 895, the aircraft powered by the Trent will weigh 7,600lbs less

I didn't realize it was that much - thanks for the info. That is an additional 35 pax that you can take, unless of course the GE90 fuel burn is so much better that you can leave behind at least 7,600lbs of fuel on a typical route. Is it?
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siromega
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 4:05 pm

Nice. And if the A350-1000 model sales soar, Boeing can come back with the 787-11 model, and have a similar EIS (2015). For airlines needing the cargo uplift plus passanger capabilities can go with the 777, and others who arent so concerned with cargo can go with the -1000 or the -11, whichever suits their needs better.

Lots of irons in the fire though: -10 and -11 variants, work on Y1 or Y3 (whichever they choose, my bets are on Y1 after this annoucement, since they probably will manage to fend off the A350 somewhat sucessfully and not get walked all over).
 
jben
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 7:43 pm

No, the fuel burn advantage of the GE90 isn't that great. On the 777 versions where RR is offered, it is the leading powerplant, having 44% of the market.

Yes, RR will restart production of the Trent 900 later. I assume they have built enough to handle the first few (dozen?) A380s...
 
Rj111
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Tue Dec 12, 2006 8:45 pm

Quoting Baron95 (Reply 25):
I didn't realize it was that much - thanks for the info. That is an additional 35 pax that you can take, unless of course the GE90 fuel burn is so much better that you can leave behind at least 7,600lbs of fuel on a typical route. Is it?

The GE90 has better fuel burn that the Trent but is noticeably heavier. Resultingly a GE90 powered 777 burns less than the Trent powered 777 beyond 3,000nm-4,000nm.
 
darkblue
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 12:15 am

Please be careful with how you phrase the thread title as it's a bit misleading. "GEnx Will Be Offered In 87,000lb Thrust Variant" isn't entirely true. Airbus has requested an 87k engine, and GE has responded only that they could provide it, but they have yet to officially say that they will offer it. Without customers lining up at the door for the A350XWB, GE is very reluctant to begin this program. My guess is that GE will play this the same way they did with the original A350. They will provide an engine only if they are guaranteed the first ~100 aircraft.
 
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 1:40 am

Quoting DarkBlue (Reply 29):
Please be careful with how you phrase the thread title as it's a bit misleading. "GEnx Will Be Offered In 87,000lb Thrust Variant" isn't entirely true. Airbus has requested an 87k engine, and GE has responded only that they could provide it, but they have yet to officially say that they will offer it.

I'm not sure who "Andries" is, since that is the only time the name is referenced in the article (no first name and no title). So I had to assume (with all the caveats that entails) they were from GE and were speaking from a position of authority on the capabilities of the engine.
 
jacobin777
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 1:47 am

Quoting Baron95 (Reply 25):
Quoting Jacobin777 (Reply 22):
you may have read recently that RR stood down the Trent 900 line.

But they'll have to continue the EIS development at some point, no?

I think you quoted the wrong person there.... Wink
"Up the Irons!"
 
darkblue
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 2:43 am

Quoting Stitch (Reply 30):
I'm not sure who "Andries" is, since that is the only time the name is referenced in the article (no first name and no title). So I had to assume (with all the caveats that entails) they were from GE and were speaking from a position of authority on the capabilities of the engine.

Ah, my apologies. I now see where the confusion comes from. Olivier Andries is an Airbus VP. His statement should read in context with the two previous paragraphs to stress that IF Airbus can convince GE to sign onto the A350XWB, the GEnx would be offered for the A350 at a rating of 87,000lb thrust (387kN). Please note the big "IF".  Smile

The article does say that "Airbus is adamant that it is close to finalising a deal with General Electric". However this is from Airbus, and I'm not so sure GE feels the same way.
 
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 2:57 am

Got it. Thanks, DarkBlue. I too was confused by the statements saying that it wasn't a done deal that GE was going to power the plane, then the statement saying they'd have an 87,000lb thrust engine.

Well, here's hoping GE can tack another 10K of thrust on the current engine, both for the A350X program and larger 787's.
 
zvezda
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 3:07 am

Quoting Stitch (Reply 33):
Well, here's hoping GE can tack another 10K of thrust on the current engine, both for the A350X program and larger 787's.

No doubt GE can do so. The big question is what timetable are GE willing to commit to.
 
WAH64D
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 3:25 am

IMO the B787-9 vs A358 sales war will come down to purchase price per airframe.

The seat count is almost identical and the B787-9 (paper) range advantage is so small as to be worthless. There are probably no missions achievable by one aircraft that couldn't be done by the other.

At present currency rates, Boeing are better placed due to the very weak dollar.
I AM the No-spotalotacus.
 
darkblue
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 3:37 am

Quoting Stitch (Reply 33):
Well, here's hoping GE can tack another 10K of thrust on the current engine, both for the A350X program and larger 787's.

I can't discuss the details of the engine, but the GEnx-3A (as it will be called) will not be the same as the GEnx-1B / 787 engine.

Quoting Zvezda (Reply 34):
No doubt GE can do so. The big question is what timetable are GE willing to commit to.

I'm not so sure if timetable is the real issue. Because this is a growth program, the costs are significantly more than pushing the current engine thrust up another 10K. GE needs to build a business case for this engine. If GE cannot put together a plan that creates a profitable program, then GE will not sign. I know I'm biased, but GE certainly has a long history of making really smart business decisions.... sole-source contracts on the 777-200LR/300ER and the 737 are two great examples.
 
justloveplanes
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 3:47 am

Quoting RJ111 (Reply 28):
The GE90 has better fuel burn that the Trent but is noticeably heavier. Resultingly a GE90 powered 777 burns less than the Trent powered 777 beyond 3,000nm-4,000nm.

Interesting question:

Do the transpac airlines favor GE 777 over RR's and the reverse for transatlantic? That would work well with your technical point.
 
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 4:41 am

Quoting DarkBlue (Reply 36):
I can't discuss the details of the engine, but the GEnx-3A (as it will be called) will not be the same as the GEnx-1B / 787 engine.

I imagine it will have a larger fan diameter and such, but will the core be different? (I understand if so, you probably can't discuss specifics and, honestly, they'd be over my head, anyway.  Smile )

Also, do you know if GE is still willing to create the GEnx-1A series for the original A350 to be used on the A330F?
 
Rj111
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 5:30 am

Quoting Justloveplanes (Reply 37):
Do the transpac airlines favor GE 777 over RR's and the reverse for transatlantic? That would work well with your technical point.

There are a lot more factors other than fuel burn and i doubt there is a massive trend. Also most airlines use their 777s on a variety of different routes and don't want a mixed fleet of engines.

Incidently though, the longest 777 route - CO's EWR-HKG - is GE powered.
 
darkblue
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 5:30 am

Quoting Stitch (Reply 38):
I imagine it will have a larger fan diameter and such, but will the core be different? (I understand if so, you probably can't discuss specifics and, honestly, they'd be over my head, anyway. )

Yep, different core too. The GEnx-2B engine has a different fan, booster and LP turbine, but shares the same core as its big brother the GEnx-1B. The GEnx-3A needed a larger core.

Quoting Stitch (Reply 38):
Also, do you know if GE is still willing to create the GEnx-1A series for the original A350 to be used on the A330F?

You know, I've seen stuff about that floating around for awhile, but still no official news. I assume it's probably the same story as the GEnx-3A. GE needs to first build a business case to launch the program.
 
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 5:34 am

Quoting DarkBlue (Reply 40):
Yep, different core too. The GEnx-2B engine has a different fan, booster and LP turbine, but shares the same core as its big brother the GEnx-1B. The GEnx-3A needed a larger core.

So if my nomenclature is correct:

GEnx-1B is the 787 powerplant.
Genx-2B is the 748 powerplant.
GEnx-1A was to be the A350 powerplant.
GEnx-3A would be the A350XWB powerplant (if built).

And then there is a two-digit suffix which denotes the thrust rating, correct?

So the GEnx-1B75 would be a 75,000lb thrust 787 powerplant.
 
worldtraveler
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 5:34 am

Is it possible that one use of an 87K GeNX would be to reengine 777s? If 787 remains strong, Boeing might find a market for reengining 772ERs to keep the market strong for that aircraft.

Possible?
 
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Stitch
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 5:46 am

Quoting WorldTraveler (Reply 42):
Is it possible that one use of an 87K GeNX would be to reengine 777s? If 787 remains strong, Boeing might find a market for reengining 772ERs to keep the market strong for that aircraft.

A GEnx in the 95,000lb thrust range to power the A350X-1000 would indeed be capable of powering a 772A and 772ER and might be popular on freighter conversions of passenger frames.

Such a 777BCF would not be as capable as the 777F or the A350F, but it might put a bit of a crimp on Airbus' plans for the A330F since it would carry more cargo and have better efficiency then a GE90-9x 772.
 
jbmitt
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 6:02 am

Quoting RJ111 (Reply 39):
Incidently though, the longest 777 route - CO's EWR-HKG - is GE powered.

I think that at most the difference is negligible. Delta flies their RR-Trent 777's to BOM from JFK 7799 miles vs 8065 for CO
 
darkblue
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Wed Dec 13, 2006 6:35 am

Quoting Stitch (Reply 41):
So if my nomenclature is correct:

GEnx-1B is the 787 powerplant.
Genx-2B is the 748 powerplant.
GEnx-1A was to be the A350 powerplant.
GEnx-3A would be the A350XWB powerplant (if built).

And then there is a two-digit suffix which denotes the thrust rating, correct?

So the GEnx-1B75 would be a 75,000lb thrust 787 powerplant.

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All correct!
 
worldtraveler
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Fri Dec 15, 2006 6:18 am

Quoting Jbmitt (Reply 44):
I think that at most the difference is negligible. Delta flies their RR-Trent 777's to BOM from JFK 7799 miles vs 8065 for CO

Mileage is not as important as the winds and routing. DL's BOMJFK flight has been in the air as long as 16 1/2 hrs on a few days since it started.

CO's EWRDEL flight is only scheduled for 5 minutes shorter than EWRHKG despite EWRDEL being 700 SM shorter.
 
dank
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Fri Dec 15, 2006 7:45 am

Quoting Werkur767 (Reply 9):
The 787-9 i think is the wiiner in the comparisons, because they had more efficiency, shows a better range, in this almost equal positions!

Regards,
Werner

I think this simply is the fact that we are comparing a plane at the bottom of the line (358) with one in the middle (789). SQ's strategy of going with the split order (if it comes to fruition) probably works well by targetting both line's sweet spots. Of course, it will depend on where the 787-10 fits in performance-wise compared to the 350-900/350-1000).

cheers.
 
baron95
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Fri Dec 15, 2006 2:00 pm

Quoting Jacobin777 (Reply 31):
I think you quoted the wrong person there....

Sorry I don't know how that happened - the quote wan from Jben I think.
Killer Fleet: E190, 737-900ER, 777-300ER
 
jacobin777
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RE: GEnx Will Be Offered In 87,000lb Thrust Variant

Fri Dec 15, 2006 2:06 pm

Quoting Baron95 (Reply 48):
Sorry I don't know how that happened - the quote wan from Jben I think.

No problems there..I wasn't upset or anything..I just wanted to make sure there wasn't any confusion.. Smile
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