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VV
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 12:22 pm

According to the spreadsheet kindly provided by VCVSpotter, there are quite a few 777-9 frames that have been built so far.
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

It seems Boeing plans to transition from 777-300ER to 777-9 only in one year.

Is it possible the last 777-300ER will get delivered in 2021?
How many 777-9 deliveries are expected in 2021?
 
Spetsnaz55
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 12:25 pm

Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now
 
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VCVSpotter
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:26 pm

Spetsnaz55 wrote:
Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now


Ok thank you for the update, I’ll go and update the spreadsheet in a bit to add that.

Your last comment said that 3 is coming out, was it in a hanger or do you mean first flight? Thanks
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

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Spetsnaz55
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:27 pm

VCVSpotter wrote:
Spetsnaz55 wrote:
Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now


Ok thank you for the update, I’ll go and update the spreadsheet in a bit to add that.

Your last comment said that 3 is coming out, was it in a hanger or do you mean first flight? Thanks



Out of the main factory I meant
 
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VCVSpotter
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:33 pm

VV wrote:
Is it possible the last 777-300ER will get delivered in 2021?
How many 777-9 deliveries are expected in 2021?


Although I can’t truly give an answer (I’m sure someone can, we have some great people on this forum), I’d say that everything (and I know people have heard this a million times) revolves around airlines and their handling of the COVID crisis. Nobody really wants to take delivery of more aircraft, no matter how fuel efficient, because of the payments they’d have to make in an already cash strapped time. I’d say that coupled with just regular storage during development is why we saw 2 779 (JA072A and A6-EZB) towed out and stored on runway 11/29 yesterday uncompleted. If someone knows a firmer total please chime in.
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

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GEUltraFan9XGTF
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:34 pm

Spetsnaz55 wrote:
Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now


Well, they must have confidence in the new engine if they are ordering more for more test frames.

So in total 4 test frames should be flying in the coming weeks?
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VCVSpotter
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:40 pm

GEUltraFan9XGTF wrote:
Spetsnaz55 wrote:
Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now


Well, they must have confidence in the new engine if they are ordering more for more test frames.

So in total 4 test frames should be flying in the coming weeks?


It looks like that is the plan. If I recall correctly they should of had all of them flying before the middle of the year, factoring in a 1 month delay or so for COVID I’d say change coming weeks to end of June and I’d agree.
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

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Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:41 pm

VCVSpotter wrote:
VV wrote:
Is it possible the last 777-300ER will get delivered in 2021?
How many 777-9 deliveries are expected in 2021?


Although I can’t truly give an answer (I’m sure someone can, we have some great people on this forum), I’d say that everything (and I know people have heard this a million times) revolves around airlines and their handling of the COVID crisis. Nobody really wants to take delivery of more aircraft, no matter how fuel efficient, because of the payments they’d have to make in an already cash strapped time. I’d say that coupled with just regular storage during development is why we saw 2 779 (JA072A and A6-EZB) towed out and stored on runway 11/29 yesterday uncompleted. If someone knows a firmer total please chime in.

Just to give a commercial view on taking new planes. You’re right on that but it also depends on how far into the contract Boeing and the customer are. It makes a lot of sense to take planes that are at/near FAL due to the ore delivery payments made and the financing already being secured. Airlines like emirates, LH and ANA who already have multiple frames built and financing secured on those frames should take those initial frames. Deferrals can come in for frames expected later. 2021 production is going down to be 2/3 a month already anyway
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 2:51 pm

GEUltraFan9XGTF wrote:
Spetsnaz55 wrote:
Flight test 4 has engines on now.

That makes all 4 flight test planes with engines .

3 is coming out any day now


Well, they must have confidence in the new engine if they are ordering more for more test frames.

So in total 4 test frames should be flying in the coming weeks?

I believe so. I’m betting on WH003 for the first week in June
 
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ikolkyo
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 3:23 pm

VCVSpotter wrote:
VV wrote:
Is it possible the last 777-300ER will get delivered in 2021?
How many 777-9 deliveries are expected in 2021?


Although I can’t truly give an answer (I’m sure someone can, we have some great people on this forum), I’d say that everything (and I know people have heard this a million times) revolves around airlines and their handling of the COVID crisis. Nobody really wants to take delivery of more aircraft, no matter how fuel efficient, because of the payments they’d have to make in an already cash strapped time. I’d say that coupled with just regular storage during development is why we saw 2 779 (JA072A and A6-EZB) towed out and stored on runway 11/29 yesterday uncompleted. If someone knows a firmer total please chime in.


Those 779s were getting stored regardless, they aren’t apart of the test fleet.
 
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VCVSpotter
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 3:25 pm

ikolkyo wrote:
VCVSpotter wrote:
VV wrote:
Is it possible the last 777-300ER will get delivered in 2021?
How many 777-9 deliveries are expected in 2021?


Although I can’t truly give an answer (I’m sure someone can, we have some great people on this forum), I’d say that everything (and I know people have heard this a million times) revolves around airlines and their handling of the COVID crisis. Nobody really wants to take delivery of more aircraft, no matter how fuel efficient, because of the payments they’d have to make in an already cash strapped time. I’d say that coupled with just regular storage during development is why we saw 2 779 (JA072A and A6-EZB) towed out and stored on runway 11/29 yesterday uncompleted. If someone knows a firmer total please chime in.


Those 779s were getting stored regardless, they aren’t apart of the test fleet.


I know, I just meant that early frames are usually stored during the test program. Sorry if that was a little misleading.
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

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Revelation
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 3:40 pm

VV wrote:
It seems Boeing plans to transition from 777-300ER to 777-9 only in one year.

The plan was for the production line to continue to be able to build 77W, 77F or 779 using mobile tooling. I'm not sure you could say the transition will be in one year. You'd have to measure the time for the first 779 to enter production to the time the last 77W/77F exits production. CV19 is also making most plans change in ways that were never anticipated.
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Stitch
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 4:01 pm

Revelation wrote:
The plan was for the production line to continue to be able to build 77W, 77F or 779 using mobile tooling. I'm not sure you could say the transition will be in one year. You'd have to measure the time for the first 779 to enter production to the time the last 77W/77F exits production. CV19 is also making most plans change in ways that were never anticipated.


Boeing did submit a plan to the city of Everett to combine Buildings 40-24 (the 787 Surge Line) and 40-34 (the 777 wing assembly) into the 777X FAL. Did this ever happen, or are they still using 40-34 for the 777 wings and 40-25 (the 777 FAL) with mobile tooling?
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 8:18 pm

Revelation wrote:
VV wrote:
It seems Boeing plans to transition from 777-300ER to 777-9 only in one year.

The plan was for the production line to continue to be able to build 77W, 77F or 779 using mobile tooling. I'm not sure you could say the transition will be in one year. You'd have to measure the time for the first 779 to enter production to the time the last 77W/77F exits production. CV19 is also making most plans change in ways that were never anticipated.


Let me ask an extremely simple question then.

Do you think there will be any 777-300ER left to deliver in December 2021?
 
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Revelation
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 8:41 pm

VV wrote:
Revelation wrote:
VV wrote:
It seems Boeing plans to transition from 777-300ER to 777-9 only in one year.

The plan was for the production line to continue to be able to build 77W, 77F or 779 using mobile tooling. I'm not sure you could say the transition will be in one year. You'd have to measure the time for the first 779 to enter production to the time the last 77W/77F exits production. CV19 is also making most plans change in ways that were never anticipated.


Let me ask an extremely simple question then.

Do you think there will be any 777-300ER left to deliver in December 2021?

It's doubtful, but I also didn't expect the late orders we saw from UA, BA, and KL. I think Boeing has done better than expected in filling the gap leading to 779, at least pre-CV19. It's also interesting that five EK 779s have already been built along with 2 LH and 2 ANA, according to our production thread.
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Spetsnaz55
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 9:10 pm

Revelation wrote:
VV wrote:
Revelation wrote:
The plan was for the production line to continue to be able to build 77W, 77F or 779 using mobile tooling. I'm not sure you could say the transition will be in one year. You'd have to measure the time for the first 779 to enter production to the time the last 77W/77F exits production. CV19 is also making most plans change in ways that were never anticipated.


Let me ask an extremely simple question then.

Do you think there will be any 777-300ER left to deliver in December 2021?

It's doubtful, but I also didn't expect the late orders we saw from UA, BA, and KL. I think Boeing has done better than expected in filling the gap leading to 779, at least pre-CV19. It's also interesting that five EK 779s have already been built along with 2 LH and 2 ANA, according to our production thread.



None of those planes are finished as far as I heard
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Tue May 19, 2020 9:14 pm

Spetsnaz55 wrote:
Revelation wrote:
VV wrote:

Let me ask an extremely simple question then.

Do you think there will be any 777-300ER left to deliver in December 2021?

It's doubtful, but I also didn't expect the late orders we saw from UA, BA, and KL. I think Boeing has done better than expected in filling the gap leading to 779, at least pre-CV19. It's also interesting that five EK 779s have already been built along with 2 LH and 2 ANA, according to our production thread.



None of those planes are finished and will be going back in the main factory at one point...

Is that what happened to WH003 and 004 because they were on the flight line for a while and then they disappeared...I assume to get their engines and test equipment installed
 
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VCVSpotter
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Re: Boeing 777X Testing/Production Thread - 2020

Wed May 20, 2020 4:50 am

Looks like no activity scheduled for tomorrow (May 20) as well.

http://kpae.blogspot.com/2020/05/paine- ... ay-19.html
https://docs.google.com/spreadsheets/d/ ... edit#gid=0

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Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Wed May 20, 2020 4:17 pm

 
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ikolkyo
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Re: Boeing 777X Testing/Production Thread - 2020

Wed May 20, 2020 4:37 pm

Those displays are massive, don’t if it’s the angle but they seem a lil bigger than the 787 display.
 
Blasst
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Re: Boeing 777X Testing/Production Thread - 2020

Wed May 20, 2020 5:05 pm

and don't forget your boot socks entering the flight deck:)
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Thu May 21, 2020 2:13 am

D-ABTA was moved from stall 213 to the fuel dock. I’m assuming to create space for WH003?
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Thu May 21, 2020 8:17 am

Opus99 wrote:
D-ABTA was moved from stall 213 to the fuel dock. I’m assuming to create space for WH003?

It actually moved into the factory
 
Noshow
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Re: Boeing 777X Testing/Production Thread - 2020

Thu May 21, 2020 8:23 am

Nice flight deck. I like sliding windows.
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Fri May 22, 2020 2:00 am

 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Fri May 22, 2020 4:03 pm

https://aviationweek.com/air-transport/ ... ation-work

An FYI...a TAB (Techicnal Advisrory Board) has been set up to work hand in hand with Boeing and the FAA with certification of the 777X (seeing as it will have an amended type certificate). I believe this is to happen as the 777X is going through testing so it will not affect the EIS timeline.
 
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GEUltraFan9XGTF
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Re: Boeing 777X Testing/Production Thread - 2020

Fri May 22, 2020 5:58 pm

Is this TAB a neutral party? Maybe made up European, Canadian, Asian regulatory bodies? Or is the TAB owned by Boeing too?
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Re: Boeing 777X Testing/Production Thread - 2020

Fri May 22, 2020 6:10 pm

GEUltraFan9XGTF wrote:
Is this TAB a neutral party? Maybe made up European, Canadian, Asian regulatory bodies? Or is the TAB owned by Boeing too?

If I am reading the article correctly, the TAB is made up of "internal FAA experts".

TFA says:

They are most often made up of FAA specialists, such as chief scientists, that have no day-to-day responsibility on the program being reviewed, and can tap outside expertise as needed.

So, a committee of FAA grey beards looking over the shoulders of the worker bees, so it seems.

Compare and contrast to the MAX TAB:

The FAA has a TAB reviewing the 737 MAX, which has been grounded since March 2019 while Boeing develops new flight control software and training ordered by the U.S. agency and other regulators. The MAX TAB includes non-FAA experts and is reviewing the agency’s own work on Boeing’s proposed changes, including compliance findings.

Also, just to preempt the inevitable doomsayers:

Its work will not affect the certification timeline of the 777-9, the first model in the new family.
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PepeTheFrog
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Re: Boeing 777X Testing/Production Thread - 2020

Fri May 22, 2020 10:24 pm

So the answer GEUltraFan9XGTF's question, ain't much neutral about it.
Good moaning!
 
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qf789
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Re: Boeing 777X Testing/Production Thread - 2020

Sat May 23, 2020 3:57 am

Both 779 test frames N779XW and N779XX on the flightline at BFI (22 May)

Image

Image

https://twitter.com/KPAE_Spotter/status ... 96864?s=20
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Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Sat May 23, 2020 11:53 am

qf789 wrote:
Both 779 test frames N779XW and N779XX on the flightline at BFI (22 May)

Image

Image

https://twitter.com/KPAE_Spotter/status ... 96864?s=20

Seems like last week they had a nice break. Probably background, documentation work etc
 
TropicalSky
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Re: Boeing 777X Testing/Production Thread - 2020

Sat May 23, 2020 4:01 pm

@OPUS99 ..... with all the equipment around XX are they installing more instrumentation & when will flight tests resume?

Opus99 wrote:
qf789 wrote:
Both 779 test frames N779XW and N779XX on the flightline at BFI (22 May)

Image

Image

https://twitter.com/KPAE_Spotter/status ... 96864?s=20

Seems like last week they had a nice break. Probably background, documentation work etc
 
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GEUltraFan9XGTF
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Re: Boeing 777X Testing/Production Thread - 2020

Sat May 23, 2020 11:20 pm

Does anyone know why there is so little fresh 77X content on YouTube? Covid keeping the spotters home?
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ikolkyo
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Re: Boeing 777X Testing/Production Thread - 2020

Sat May 23, 2020 11:59 pm

GEUltraFan9XGTF wrote:
Does anyone know why there is so little fresh 77X content on YouTube? Covid keeping the spotters home?


That and the fact that there is only 2 aircraft and the only airports you will find them at is GEG and BFI. Here is a good channel for some nice 777X action

https://www.youtube.com/channel/UCv2gMx ... xnw/videos
 
Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 11:59 am

https://www.aerospacetestinginternation ... tests.html

An update on the GE9X certification. It seems to be doing well
 
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 12:10 pm

Opus99 wrote:
https://www.aerospacetestinginternational.com/news/engine-testing/ge9x-engine-nears-final-certification-tests.html

An update on the GE9X certification. It seems to be doing well

So why do they open the article with an untruth? They said that the GE9X is the most powerful engine in the world. It’s not. The GE90-115 is more powerful.
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Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 12:14 pm

SEPilot wrote:
Opus99 wrote:
https://www.aerospacetestinginternational.com/news/engine-testing/ge9x-engine-nears-final-certification-tests.html

An update on the GE9X certification. It seems to be doing well

So why do they open the article with an untruth? They said that the GE9X is the most powerful engine in the world. It’s not. The GE90-115 is more powerful.

It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds
 
VV
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 1:07 pm

Opus99 wrote:
SEPilot wrote:
Opus99 wrote:
https://www.aerospacetestinginternational.com/news/engine-testing/ge9x-engine-nears-final-certification-tests.html

An update on the GE9X certification. It seems to be doing well

So why do they open the article with an untruth? They said that the GE9X is the most powerful engine in the world. It’s not. The GE90-115 is more powerful.

It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds


I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.
 
morrisond
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 5:10 pm

VV wrote:
Opus99 wrote:
SEPilot wrote:
So why do they open the article with an untruth? They said that the GE9X is the most powerful engine in the world. It’s not. The GE90-115 is more powerful.

It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds


I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.


That will be for the 360T 779 MTOW version....
 
flipdewaf
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 5:49 pm

morrisond wrote:
VV wrote:
Opus99 wrote:
It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds


I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.


That will be for the 360T 779 MTOW version....

I would think so. A 360t 779X would make it an 8knm machine and I think would remove most of the call for the 778X and perhaps nail on a 777-10x.

Fred


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744SPX
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 5:58 pm

I don't see why they couldn't make a 360 ton 778 as well, it would make a very good freighter and be even better for ULH.
 
United857
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 6:22 pm

I remember reading somewhere that the problem with going above the current 351t MTOW is the pavement loading. The current 2x 6-wheel bogies are up against the limit of pavement strength in quite a few airports. The A345/A346 can do 381t on the same number of main gear wheels (12) because it uses 3x 4-wheel bogies, which spreads the weight over a larger area. Adding an extra center main gear leg, if necessary, is not gonna be easy on the 777x because the two main gears when retracted are right up against each other already.
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Opus99
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 6:49 pm

morrisond wrote:
VV wrote:
Opus99 wrote:
It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds


I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.


That will be for the 360T 779 MTOW version....

Are there confirmed plans for a 360T version?
 
morrisond
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Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 7:30 pm

Opus99 wrote:
morrisond wrote:
VV wrote:

I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.


That will be for the 360T 779 MTOW version....

Are there confirmed plans for a 360T version?


No - just speculation - But I think somewhere back in the threads someone explained that 360T is possible and would not be over the existing pavement loading restrictions.

Looking at the ACAPS (you can kill a few hours of Covid time looking through them) - the only real difference between 77W and 777X is that the 777X Main gear is 6" farther apart.

Both use the same Wheel Sizes and Spacing. The only real difference I can see is that the 777X front wheel puts a lot less load on the pavement than an 777f (probably due to the shorter length of the 777F or maybe how it's normally loaded but the 77L is higher than 77W as well).

Although very unscientific - most shots I have seen of Wheels melting into the asphalt are usually the front wheels.

What are the usual problems with pavement loading?

ACAPS - you want sections 7.5 and 7.6

https://www.boeing.com/resources/boeing ... 9_RevA.pdf

https://www.boeing.com/resources/boeing ... 2lr3er.pdf
 
flipdewaf
Posts: 3587
Joined: Thu Jul 20, 2006 6:28 am

Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 7:35 pm

744SPX wrote:
I don't see why they couldn't make a 360 ton 778 as well, it would make a very good freighter and be even better for ULH.

It’s not that you can’t it’s just that you squeeze the market niche that the 778 has from below and let’s face it the market at the top end doesn’t get greater the further out you go. If we look at where the orders for the 778X are from you can see that the bulk (all?) are from the Middle East and if you go to gcmap and draw an 8000nm range out of DXB you will see pretty much nowhere in the world missing. You can make a 360t 778X but a 360t 778x has less market share with a 360t 779x stable mate than it does with both at 351t. If the ME3 don’t need it then who else is there?

With regard to a potential freighter version, outside of increasing the MTOW there is not market for it. Increasing the empty weight of the 777X gives up fuel+payload capability. It can be seen from the Boeing numbers that the 779X likely has a not insignificantly lower MZFW range than the 77W, whilst this might not be an issue for the longer range flights as the fuel burn will be reduced but for a freighter version the max payload range of the new version being lower than the model it replaces? Not great I’d say.

If it were my decision I’d look at trying to put an updated (110klb) GE9X on to the old 77F as the bulk of the fuel burn savings were/are from the engine (~10%), you would get those but not care so much about the 3-4% aero benefits you are leaving behind as the freight market has more lean toward capital costs than fuel/op costs due to lower utilisation.

Opus99 wrote:
Are there confirmed plans for a 360T version?
you will find them in the same place as the 260t 787...

Fred


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upintheair2019
Posts: 50
Joined: Fri Oct 25, 2019 8:53 am

Re: Boeing 777X Testing/Production Thread - 2020

Mon May 25, 2020 7:47 pm

Opus99 wrote:
SEPilot wrote:
Opus99 wrote:
https://www.aerospacetestinginternational.com/news/engine-testing/ge9x-engine-nears-final-certification-tests.html
An update on the GE9X certification. It seems to be doing well

So why do they open the article with an untruth? They said that the GE9X is the most powerful engine in the world. It’s not. The GE90-115 is more powerful.

It actually is the most powerful. It can reach 134,000 pounds of thrust. There’s a Guinness world record to prove it. But for the 777X it’s thrust is limited to 105,000 pounds


The official GE press release about that: www.ge.com/reports/its-official-guinnes ... et-engine/
 
VV
Posts: 1841
Joined: Sat Feb 13, 2016 1:03 pm

Re: Boeing 777X Testing/Production Thread - 2020

Tue May 26, 2020 7:21 am

Opus99 wrote:
morrisond wrote:
VV wrote:

I read the same thing too.
However, I suspect at one point there would be (a) higher thrust variant(s) up to 110 klb or so.


That will be for the 360T 779 MTOW version....

Are there confirmed plans for a 360T version?


No there is no plan to increase the MTOW beyond 775,000 lbs.
 
VV
Posts: 1841
Joined: Sat Feb 13, 2016 1:03 pm

Re: Boeing 777X Testing/Production Thread - 2020

Tue May 26, 2020 11:02 am

VV wrote:
Opus99 wrote:
morrisond wrote:

That will be for the 360T 779 MTOW version....

Are there confirmed plans for a 360T version?


No there is no plan to increase the MTOW beyond 775,000 lbs.


By the way, it may be important to not change the MTOW target for now even if it is technically possible.

Increasing the MTOW would be the last resort if they absolutely need to meet contractual commitments on payloads or range. It is even possible it would be given as an option to affected customers.

It is more important to maintain the motivation on the design bureau to reduce the aircraft's empty weight.

At this stage, I think Boeing already has an idea whether they would meet the weight target of the aircraft.
Components have been weighed for the four flight test aircraft and the different production airframes. Even complete aircraft have been weighed, albeit with the flight test instruments.

Obviously they are not going to tell us the details.
 
flipdewaf
Posts: 3587
Joined: Thu Jul 20, 2006 6:28 am

Re: Boeing 777X Testing/Production Thread - 2020

Tue May 26, 2020 11:18 am

VV wrote:
VV wrote:
Opus99 wrote:
Are there confirmed plans for a 360T version?


No there is no plan to increase the MTOW beyond 775,000 lbs.


By the way, it may be important to not change the MTOW target for now even if it is technically possible.

Increasing the MTOW would be the last resort if they absolutely need to meet contractual commitments on payloads or range. It is even possible it would be given as an option to affected customers.

It is more important to maintain the motivation on the design bureau to reduce the aircraft's empty weight.

At this stage, I think Boeing already has an idea whether they would meet the weight target of the aircraft.
Components have been weighed for the four flight test aircraft and the different production airframes. Even complete aircraft have been weighed, albeit with the flight test instruments.

Obviously they are not going to tell us the details.


I'm hoping we see the range creeping up from the 7285 figure. I would like to see Boeing confidently state a Pax+Bags range of closer to the original ~7500 or even up to 7700nm. As it stands it looks a bit like payload could be taking a hit and this bird needs that to be successful I think.

Fred
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Opus99
Posts: 984
Joined: Thu May 30, 2019 10:51 pm

Re: Boeing 777X Testing/Production Thread - 2020

Tue May 26, 2020 11:23 am

flipdewaf wrote:
VV wrote:
VV wrote:

No there is no plan to increase the MTOW beyond 775,000 lbs.


By the way, it may be important to not change the MTOW target for now even if it is technically possible.

Increasing the MTOW would be the last resort if they absolutely need to meet contractual commitments on payloads or range. It is even possible it would be given as an option to affected customers.

It is more important to maintain the motivation on the design bureau to reduce the aircraft's empty weight.

At this stage, I think Boeing already has an idea whether they would meet the weight target of the aircraft.
Components have been weighed for the four flight test aircraft and the different production airframes. Even complete aircraft have been weighed, albeit with the flight test instruments.

Obviously they are not going to tell us the details.


I'm hoping we see the range creeping up from the 7285 figure. I would like to see Boeing confidently state a Pax+Bags range of closer to the original ~7500 or even up to 7700nm. As it stands it looks a bit like payload could be taking a hit and this bird needs that to be successful I think.

Fred

Range will go above 14,000KM. Boeing website has been stating 13,500 for sometime long time but their press release when BA ordered (FEB 2019) states the range at 14,075KM Although everywhere else states at 13500

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