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748F Has Its Engines  
User currently offlineCosmofly From United States of America, joined May 2009, 649 posts, RR: 0
Posted (5 years 1 week 6 days 2 hours ago) and read 6024 times:

748F has its engines now.
http://www.flightglobal.com/blogs/fl...boeing-to-747-8f-go-on-a-diet.html

25 replies: All unread, showing first 25:
 
User currently offlineBrons2 From United States of America, joined Sep 2001, 3013 posts, RR: 4
Reply 1, posted (5 years 1 week 6 days 2 hours ago) and read 5975 times:

They also said in that link that Boeing is trying to push for a November first flight on the 748F.

I sure do like the way the bigger GEnx engines look on there.



Firings, if well done, are good for employee morale.
User currently offlineArt From United Kingdom, joined Feb 2005, 3382 posts, RR: 1
Reply 2, posted (5 years 1 week 6 days 1 hour ago) and read 5952 times:

To quote Flightblogger:

"Boeing says first flight is targeted for the fourth quarter of the year, with early indications that the company has set its sights on mid-November for the maiden sortie."

To me it looks like a close run thing as to whether the 787 or 748 gets off the ground first, assuming that the only outstanding issue with the 787 is the wing/fuselage fix.


User currently offlinePM From Germany, joined Feb 2005, 6914 posts, RR: 63
Reply 3, posted (5 years 1 week 6 days 1 hour ago) and read 5944 times:



Quoting Cosmofly (Thread starter):
GEnx2 To Fly Before GEnx?

Strictly speaking, the GEnx has been flying for a while. I guess you mean it will fly on its indended application. In that case, I'd say it's likely.


User currently offlineRsg85 From Australia, joined Aug 2006, 257 posts, RR: 0
Reply 4, posted (5 years 1 week 5 days 20 hours ago) and read 5738 times:

Lets not forget although this is another 747 there are a large amount of design changes and more modern materials and technology going into the 8.
The aircraft could still run into unexpected delays.
The engines certainly do look massive, also notice in the background the second aircraft well under way


User currently offlineArniePie From Belgium, joined Aug 2005, 1265 posts, RR: 1
Reply 5, posted (5 years 1 week 5 days 19 hours ago) and read 5650 times:

Am I right ,looking at the wings ,thinking that the slat/flap setup will be almost identical to the 744 ?
Still looks as nice as ever , even better with the larger engines.



[edit post]
User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 6, posted (5 years 1 week 5 days 19 hours ago) and read 5642 times:

The GE GEnx-2B is not yet certified ,see following link :
http://www.airweb.faa.gov/Regulatory...E2ACB862574250061F9CB?OpenDocument

On this type certificate only the -1B is mentioned. But it's very likely that the -2B variant will fly first on his intended application.



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineDynamicsguy From Australia, joined Jul 2008, 873 posts, RR: 9
Reply 7, posted (5 years 1 week 5 days 19 hours ago) and read 5621 times:



Quoting ArniePie (Reply 5):
Am I right ,looking at the wings ,thinking that the slat/flap setup will be almost identical to the 744 ?

Simpler flaps than the 747-400 - double slotted inboard flaps and single slotted outboard.

The 747 does not have slats. The setup of Kreuger panels and variable camber panels is similar to the 747-400, but the parts have been redesigned.


User currently offlineADent From United States of America, joined Dec 2006, 1383 posts, RR: 2
Reply 8, posted (5 years 1 week 5 days 18 hours ago) and read 5572 times:



Quoting 747classic (Reply 6):
On this type certificate only the -1B is mentioned. But it's very likely that the -2B variant will fly first on his intended application.

I know the -1B had some design changes flowing out of -1B and -2B testing and maturity and "re-certification" was mentioned. From the dates on that document that looks like the original -1B.


User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 9, posted (5 years 1 week 5 days 18 hours ago) and read 5530 times:



Quoting ADent (Reply 8):
I know the -1B had some design changes flowing out of -1B and -2B testing and maturity and "re-certification" was mentioned. From the dates on that document that looks like the original -1B.

That's right, I think the next amendment of the TC will cover the changes on the -1B variant and the introduction of the -2B.
At the moment however only this TC is valid.



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineCosmofly From United States of America, joined May 2009, 649 posts, RR: 0
Reply 10, posted (5 years 1 week 5 days 8 hours ago) and read 5107 times:

Does -2B need TC before 748F flies?

User currently offlineVirgin747lgw From United Kingdom, joined Mar 2007, 225 posts, RR: 0
Reply 11, posted (5 years 1 week 5 days 8 hours ago) and read 5053 times:

what are the chances of Boeing intentionally delaying FF of the 747-8 if the 787 is pretty close to flying? I guess customers wouldnt be too impressed but it would be better PR to have the 787 flying first wouldnt it?

User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 12, posted (5 years 1 week 5 days 8 hours ago) and read 5005 times:



Quoting Cosmofly (Reply 10):
Does -2B need TC before 748F flies?

I am not 100% sure of the legal aspect of that..
But I think Boeing will not operate a test aircraft with four "non certified" engines.
Purpose of all test flying with Boeing is to certify the engine/airframe combination.

Quoting Virgin747lgw (Reply 11):
what are the chances of Boeing intentionally delaying FF of the 747-8 if the 787 is pretty close to flying?

That would be a real shame, the 747-8 project suffered already more than enough from the engineering drain to the 787.



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineCosmofly From United States of America, joined May 2009, 649 posts, RR: 0
Reply 13, posted (5 years 1 week 5 days 8 hours ago) and read 5005 times:

Boeing needs good news badly so if they can fly the 748F first, they should do it.

Besides, I am sure the 748 team would not like to wait for the 787.


User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 14, posted (5 years 1 week 5 days 7 hours ago) and read 4940 times:

Take a good look at this beautiful aircraft :
http://blog.seattlepi.com/aerospace/archives/178084.asp

and click "big foto" for a high res. picture.



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineRIX From United States of America, joined Aug 2000, 1787 posts, RR: 1
Reply 15, posted (5 years 1 week 5 days 7 hours ago) and read 4855 times:



Quoting Cosmofly (Reply 13):
I am sure the 748 team would not like to wait for the 787.

- indeed, business is business, why to waste time.

Quoting 747classic (Reply 14):
Take a good look at this beautiful aircraft

- beauty it is...


User currently offlineIkramerica From United States of America, joined May 2005, 21525 posts, RR: 59
Reply 16, posted (5 years 1 week 5 days 6 hours ago) and read 4801 times:

Those big engines finally make the 747 look "right". They give it balance.


Of all the things to worry about... the Wookie has no pants.
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 79
Reply 17, posted (5 years 1 week 5 days 5 hours ago) and read 4722 times:



Quoting Cosmofly (Reply 10):
Does -2B need TC before 748F flies?

It doesn't need it (an Experimental ticket will let you do pretty much anything if you can talk the regulators into agreeing with you), but it's unlikely they'd bother. The engine companies have a good record of getting their TC before the engine goes flying on the target aircraft.

Tom.


User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 18, posted (5 years 1 week 3 days 21 hours ago) and read 3319 times:

Are the new pylons and engine cowls of the 747-8 so designed that the same engine-ground clearance is achieved as on the 747-400? (despite the 11 inch increase in fan diameter)

If the clearance stayed the same :

The GEnx-2B would also be the perfect match for the KC-767 in the ill fated tanker contest.
- 17 percent lower fuel consumption
- optimized for aircraft with bleed systems
- lower noise levels.
- increased hot/high performance



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineCCA From Hong Kong, joined Oct 2002, 835 posts, RR: 14
Reply 19, posted (5 years 1 week 3 days 20 hours ago) and read 3251 times:

Quoting 747classic (Reply 18):
Are the new pylons and engine cowls of the 747-8 so designed that the same engine-ground clearance is achieved as on the 747-400? (despite the 11 inch increase in fan diameter)

Yes the pylons have been completely redesigned, they're similar to the 777 ones.

[Edited 2009-09-05 00:51:26]


C152 G115 TB10 CAP10 SR-22 Be76 PA-34 NDN-1T C500 A330-300 A340-300 -600 B747-200F -200SF -400 -400F -400BCF -400ERF -8F
User currently offlineExcalibur From France, joined Dec 2007, 56 posts, RR: 0
Reply 20, posted (5 years 1 week 3 days 20 hours ago) and read 3205 times:

What a beautiful plane!
Glad to see that this beauty is getting younger and younger despite her old age  Wink
Make her fly soon, that will bring good waves to the 787 team!



McDonnell-Douglas MD11 - Boeing 747-400
User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 21, posted (5 years 1 week 3 days 20 hours ago) and read 3171 times:

Quoting CCA (Reply 19):
Yes the pylons have been completely redesigned, they're similar to the 777 ones.

What is the similarity between the 777 and 747-8 (GE90 and GEnx) engine pylons, on the older 747's even the outboard and the inboard pylons are different?

Let's rephrase the question :
- Are the new engines installed higher opposite to the wing than on the 747-400, to archive the same ground to engine cowl clearance OR has the clearance decreased.

[Edited 2009-09-05 01:21:15]


Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineParapente From United Kingdom, joined Mar 2006, 1581 posts, RR: 10
Reply 22, posted (5 years 1 week 3 days 19 hours ago) and read 3070 times:

I have been away alot this summer so may have missed it.The 748f is now over 90% complete and ready to fly in the last quarter.I assume that the 748i is in the assembly rooms somewhere.She only has a different forward "plug" to the "f".Have any photos of her assembly been released?

User currently offline747classic From Netherlands, joined Aug 2009, 2139 posts, RR: 14
Reply 23, posted (5 years 1 week 3 days 18 hours ago) and read 3017 times:

Quoting Parapente (Reply 22):
Have any photos of her assembly been released?

No, the 747-8I trails the 747-8F more than a year, so no 747-8I will be assembled in the coming months, see :
http://www.flightglobal.com/articles...passenger-aircraft-deliveries.html

[Edited 2009-09-05 02:44:43]


Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineParapente From United Kingdom, joined Mar 2006, 1581 posts, RR: 10
Reply 24, posted (5 years 1 week 3 days 18 hours ago) and read 2974 times:

Thanks for the update 747 classic.So the F will be in commercial service for 6 months before the i flies.I guess they wil have some good hard (hopefully) figures that they can show to potental customers.I have no doubt that A380 improvements will also come to counter this.I know that there is a continual process of "diet" that the 380 is on but have no idea what the timeline is.Should be interesting

User currently offlineCCA From Hong Kong, joined Oct 2002, 835 posts, RR: 14
Reply 25, posted (5 years 1 week 3 days 18 hours ago) and read 2967 times:

Quoting 747classic (Reply 21):
Let's rephrase the question :
- Are the new engines installed higher opposite to the wing than on the 747-400, to archive the same ground to engine cowl clearance OR has the clearance decreased.

What I should have said was yes the engines have been lifted to increase the ground clearance similar to how the 777 pylons have created the necessary ground clearance.

I'd say they have been lifted to allow the minimum ground clearance for the new MTOW and MLW. Which is probably very close to the 400s current clearance.


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[Edited 2009-09-05 03:17:08]


C152 G115 TB10 CAP10 SR-22 Be76 PA-34 NDN-1T C500 A330-300 A340-300 -600 B747-200F -200SF -400 -400F -400BCF -400ERF -8F
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