Reports that 7E7 fuselage draggier than older designs . . . . | Forums

[britgliderpilot]

Read it in the Times this morning - haven't been able to confirm it elsewhere yet.


If it's true . . . . then Boeing's managed to shoot itself in the foot in a rather spectacular manner

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[britgliderpilot]

Read it in the Times this morning - haven't been able to confirm it elsewhere yet.


If it's true . . . . then Boeing's managed to shoot itself in the foot in a rather spectacular manner

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[Force_Feedback]

Lol, their Sonic Cruiser looked quite fat too, so it doesn't surprise me that.

But hey, it will have very fuel efficient engines and will be lighter then similar sized planes.

It sounds quite stupid though, saying that your plane will be cheaper, more quiet, fuel efficient, and blow it on the wings/fuselage.

I bet Boeng will only be known for their UAV's in the next centurey.

[xchrisday]

Say hello to airbus

[AFACadet]

Whoever said that about the 7E7 needs to lay off the drugs :P

The 7E7 itself is about 5 percent less draggy than current aircraft. That might not sound like much, but the average drag reduction in aircraft is only about 1.5 to 2 percent. 3 extra percent is quite an achivement. The other 15 percent is due to the engines. At first, the engine makers didn't think that was even possibe, and didn't want to join the program, but they figured stuff out and now it looks like its very possible.

If the 7E7 gets it 20% savings, it may well become the best selling airliner in history, out-selling both the 727 and 737. With current fuel costs, that is exactly the kind of airliner that is wanted now.

Everyone said Boeing would go Broke with the Dash 80 in the 50s. It became an amazing economic sucess with both the civilian world and the military. It also proved that jet travel was here to stay.

Everyone again said that Boeing could not pull off the 727. The technology to get a jet to land on 'normal' runways was just not there. The 727 was the best selling airliner until the 737, which itself was only expected to sell a couple hundred.

Everyone said Boeing was crazy with the 747. Infact, Boeing bet the entire company on the aircraft. The 747 has since become one of the most famous aircraft ever designed and it launched the era of widebody aircraft (as well as making Boeing a buttload of money).

Again with the 777, Boeing 'bet the farm' on that design. Yet again, naysayers forcasted doom and gloom--until the 777 also proved to be one of Boeing's most popular designes.

And again, with the 7e7, people are forcasting the death of Boeing and saying the aircraft will never work. Considering that the same exact stuff was said for 5 of the most sucessful aircraft designes ever created, I think that says a lot...

[c-ber3]

Come on guys, you all have at least a bisc grounding in aerodynamics....What sort of drag? Induced or parasite? Lets not forget that it will be the wings that will make or break the aircraft, who cares if the fuselage has slightly more drag if the wings are 15% more efficient and the engines output more thrust for a given fuel consumption.
Of course the fuselage will generate more drag - its bigger than current a/c! Lets wait and see what it's drag is like when its finished....

[britgliderpilot]

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by AFACadet:
Whoever said that about the 7E7 needs to lay off the drugs :P
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I do admit, it sounds unlikely.


The article talked about the shape of the new fuselage, and then said that Boeing's engineers had found it to be draggier than the old designs.

That's all the knowledge I can find on it - without further information, I can't really comment on how accurate it is.

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[Bremspropeller]

The 7E7 (wasn't the 767 originally supposed to be called 7E7 ??) isn't even yet finished.
I think the guys from Boeing will do their job...beleive me.


Da B&Z bird !

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[AFACadet]

Boeing adds a letter the middle number while still in the design stages. Its usually 7x7, but in playing up the efficiency aspect, they changed it to 7e7 in this case.

[bigvette]

Can we say propoganda from Airbus? Boeing has been building aircraft for 3X as long as Airbus has, they know what they are doing and if this were a bet at Vegas I'd lay big money that the 7e7 is and or at least will be just fine!