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748i Wings Join Center Box  
User currently offlinecosmofly From United States of America, joined May 2009, 649 posts, RR: 0
Posted (4 years 2 months 2 weeks 4 days 21 hours ago) and read 11456 times:

http://www.twitvid.com/CJGPN

I hope the wing mod required for 748F will not affect the 748i.

17 replies: All unread, jump to last
 
User currently offlineKappel From Suriname, joined Jul 2005, 3533 posts, RR: 17
Reply 1, posted (4 years 2 months 2 weeks 4 days 6 hours ago) and read 10466 times:

Very cool to see this!


L1011,733,734,73G,738,743,744,752,763,772,77W,DC855,DC863,DC930,DC950,MD11,MD88,306,319,320,321,343,346,ARJ85,CR7,E195
User currently offline7673mech From United States of America, joined Mar 2004, 736 posts, RR: 0
Reply 2, posted (4 years 2 months 2 weeks 4 days 6 hours ago) and read 10199 times:
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Quoting cosmofly (Thread starter):

I hope the wing mod required for 748F will not affect the 748i.

I believe you are confusing this with the 787?


User currently offlinepar13del From Bahamas, joined Dec 2005, 7479 posts, RR: 8
Reply 3, posted (4 years 2 months 2 weeks 4 days 6 hours ago) and read 10087 times:

Quoting cosmofly (Thread starter):
I hope the wing mod required for 748F will not affect the 748i.

If you are talking about the inboard flap issue which is causing some "flight performance" issue they expect the same to occur on the 748i, in that regard both a/c are similar, they are supposed to be porting the fixes to the i version once "sorted out" on the f version.

Lotta versions there  


User currently offline747classic From Netherlands, joined Aug 2009, 2196 posts, RR: 14
Reply 4, posted (4 years 2 months 2 weeks 4 days 6 hours ago) and read 9544 times:

Quoting cosmofly (Thread starter):
I hope the wing mod required for 748F will not affect the 748i.



The flaps 30 flutter issue is solved and the fix will be integrated in the 747-8 Intercontinental.

IMO, cosmofly is referring to the second item of the two remaining issues in the present 747-8F flight test programme :

- An oscillation in the aircraft's inboard aileron caused by an under-performing actuator.

- A structural flutter at mid-weight just below cruise speed.

Perhaps the structural flutter is influenced by a different flow pattern over the wing, caused by the stretched upper deck..
(area ruling).



Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlineikramerica From United States of America, joined May 2005, 21562 posts, RR: 59
Reply 5, posted (4 years 2 months 2 weeks 4 days 5 hours ago) and read 9330 times:

Quoting 747classic (Reply 4):
Perhaps the structural flutter is influenced by a different flow pattern over the wing, caused by the stretched upper deck..

The 747F doesn't share the same upper deck as the 748 or 744 pax version.



Of all the things to worry about... the Wookie has no pants.
User currently offline747classic From Netherlands, joined Aug 2009, 2196 posts, RR: 14
Reply 6, posted (4 years 2 months 2 weeks 4 days 4 hours ago) and read 8053 times:

Quoting ikramerica (Reply 5):
The 747F doesn't share the same upper deck as the 748 or 744 pax version.



I will rephrase my answer : the 747-8F has a structural flutter issue at mid weight, just below cruise speed.

IMO, cosmofly meant that due the stretched upper deck, this flutter issue of the 747-8F (short upper deck) will NOT be present on the 747-8I , due a different flow pattern over the inboard upperwing. of the 747-8I.

[Edited 2010-09-07 14:16:28]


Operating a twin over the ocean, you're always one engine failure from a total emergency.
User currently offlinePC12Fan From United States of America, joined Jan 2007, 2457 posts, RR: 5
Reply 7, posted (4 years 2 months 2 weeks 4 days 4 hours ago) and read 7511 times:

Still weird to me that the first 748i is NOT going to an airline. None the less, very cool to see.


Just when I think you've said the stupidest thing ever, you keep talkin'!
User currently onlineVC10er From United States of America, joined Feb 2007, 2968 posts, RR: 13
Reply 8, posted (4 years 2 months 2 weeks 3 days 22 hours ago) and read 4570 times:
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To be sure the 747-8F and 747-8i do NOT use 800, like 747-400 or a 777-300.
Why not 747-800F and 747-800i?
Doesn't "800" have nextgen meaning now? Couldn't a 747-800 F/I use the communication to get across the "747-8"' is almost a new airplane that happens to use almost the same shape as the famous 747 shape? Too "off topic"?



The world is missing love, let's use our flights to spread it!
User currently offlinesimpilot459 From United States of America, joined Sep 2005, 139 posts, RR: 0
Reply 9, posted (4 years 2 months 2 weeks 3 days 21 hours ago) and read 4196 times:

Quoting PC12Fan (Reply 7):
Still weird to me that the first 748i is NOT going to an airline.

Yeah. But I thought the first delivered will still be to Lufthansa.

Quoting VC10er (Reply 8):
Why not 747-800F and 747-800i?

It originally was the -800, but shortened to -8, presumably because of the 787-8 with which it shares many technologies.

Can't wait to see the 748I Fuselage start coming together. Should be close to heading into systems, which is the last position before final body join.



Take off: Optional Landing: Mandatory
User currently onlineVC10er From United States of America, joined Feb 2007, 2968 posts, RR: 13
Reply 10, posted (4 years 2 months 2 weeks 3 days 11 hours ago) and read 3701 times:
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If I went to Boeing, as a tourist, would they allow peope to see the 747-8i being built or rolled out?


The world is missing love, let's use our flights to spread it!
User currently offlinebikerthai From United States of America, joined Apr 2010, 2170 posts, RR: 4
Reply 11, posted (4 years 2 months 2 weeks 3 days 11 hours ago) and read 3660 times:

Quoting VC10er (Reply 10):
they allow people to see the 747-8i being built or rolled out?

There is a factory tour available at the visitor center. The time that I went, the tour let you over look the 777 line. I don't know what they will show you now. Try contacting them and see . . .

http://www.boeing.com/commercial/tours/index.html

bikerthai



Intelligent seeks knowledge. Enlightened seeks wisdom.
User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 12, posted (4 years 2 months 2 weeks 3 days 10 hours ago) and read 3505 times:

Quoting VC10er (Reply 10):
If I went to Boeing, as a tourist, would they allow peope to see the 747-8i being built or rolled out?

I think the tour hits the 777 and 787 lines in alternation, but you can always ask. If you know somebody at Boeing, they can take you to Family Day (done once a year), in which case you can see almost anything in the factory.

Tom.


User currently onlineStitch From United States of America, joined Jul 2005, 31240 posts, RR: 85
Reply 13, posted (4 years 2 months 2 weeks 3 days 8 hours ago) and read 3362 times:
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Last time I went it was the 747 line, which was the original tour location, and then the 777 and 787 lines, which is the new your location (they have a large deck that runs between both buildings to allow views of both FALs).

User currently offlinecosmofly From United States of America, joined May 2009, 649 posts, RR: 0
Reply 14, posted (4 years 2 months 2 weeks 3 days 7 hours ago) and read 3247 times:

Quoting 747classic (Reply 6):
IMO, cosmofly meant that due the stretched upper deck, this flutter issue of the 747-8F (short upper deck) will NOT be present on the 747-8I , due a different flow pattern over the inboard upperwing. of the 747-8I.

  

If earlier rumor of possible inboard engine relocation of the 748F is true, I assume Boeing may do the same to 748i.


User currently offlineDocLightning From United States of America, joined Nov 2005, 20203 posts, RR: 59
Reply 15, posted (4 years 2 months 2 weeks 3 days 7 hours ago) and read 3226 times:

Quoting par13del (Reply 3):

If you are talking about the inboard flap issue which is causing some "flight performance" issue they expect the same to occur on the 748i, in that regard both a/c are similar, they are supposed to be porting the fixes to the i version once "sorted out" on the f version.

I thought the mod was to the MLG door, not to the wing.


User currently onlinetrex8 From United States of America, joined Nov 2002, 4834 posts, RR: 14
Reply 16, posted (4 years 2 months 2 weeks 3 days 2 hours ago) and read 2834 times:
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Quoting DocLightning (Reply 15):
I thought the mod was to the MLG door, not to the wing.

There is the vibration of the inboard flaps due to the gear door which is fixed by reducing the angle between the upper and lower door panel, then there are the other flutter issues :

Quoting 747classic (Reply 4):
- An oscillation in the aircraft's inboard aileron caused by an under-performing actuator.

- A structural flutter at mid-weight just below cruise speed.


User currently offlineCessna172RG From United States of America, joined Aug 2000, 749 posts, RR: 0
Reply 17, posted (4 years 2 months 2 weeks 2 days 8 hours ago) and read 2318 times:

I did the Boeing Everett tour in mid August of this year and we indeed got to see the 747-8, as well as the 777 line and the 787 line being produced. No tour of the 767 line, though. Highly recommended, but unfortunately, they won't let you take cameras.


Save the whales...for dinner!!!
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