If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#11
|
|||
|
|||
"Tom S." wrote in message ... "Kevin Brooks" wrote in message ... "Tom S." wrote in message ... "Kevin Brooks" wrote in message ... 7E7 will offer airlines a new airframe (they can't fly the same old ones forever) No ? No. Aircraft have definite service lives. Surprised you did not know that. What's the service life of a DC-3? Don't know--how many of them have you seen flying with major airlines of late? Why would the number of major airlines be at all relevant? They are the folks who buy most of the airplanes--you know, the thing we were talking about here? Brooks |
#12
|
|||
|
|||
In article 3523d.323018$Oi.300857@fed1read04,
"Leadfoot" writes: Boeings take on aircraft service life is that it can be indefinite so long as the sircraft is maintained properly. There has never been a requirement to retire a Boeing aircraft after "X" number of whatevers. I suspect the 747 will fare far better than the DC-3 over a 70 year period. While you're correct about Boeing's take on service life, the fact remains that, at some point in its life (the end, of course) a 747 will start showing cracks in wing spars, and the fuselage pressure vessel, and all manner of other areas, and it will become uneconomical to repair it. That's already happening. the DC-3 series of airplanes hasn't shown any of these behaviors. That's not too surprising, really - The DC-3's wing structure is fairly stiff, and it uses Jack Northrop's multi-cellular construction techniques. There are multiple load paths there, so individual elements aren't stressed too highly. It's not pressurized, so you're not inflating and deflating the cabin on each flight. The 747, and, for that matter, any other jet, is much more flexible, and has to put up with the stresses and strains of pressurization, At some point, it's going to give. -- Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster |
#13
|
|||
|
|||
"Tom S." wrote
"Kevin Brooks" wrote No. Aircraft have definite service lives. Surprised you did not know that. What's the service life of a DC-3? Since all loads in a DC-3 are carried by high strength fittings and not by "stressed skin", the CD-3 has no specified service life as do the modern jetliners. I recall seeing a TV interview with Mr. Douglas in which he explained that by replacing the bushel basket of fittings that he had brought with him, any DC-3 airframe could be made good as new. Bob Moore |
#14
|
|||
|
|||
Smutny wrote:
The bottom line is that Boeing as we've known it for 88 years is no more. As a Seattle resident, it pains me to see the plants being torn down, to see engineering and sales buildings turned into parking lots where the circus sets up a couple times a year. BAe has done this to Hatfield ( formerly owned by Hawker Siddeley and de Havilland ) , the home of the jet airliner, just to name one significant product made there. Oh, sure, the management said they would *never* close Hatfield. The real estate was worth too much as a business park and BAe wanted to concentrate on defence contracts instead of commercial. Sounds kinds similar. Graham |
#15
|
|||
|
|||
Matthew Chidester wrote:
737 next generation a mistake? they just got a huge order from the navy to replace the p-3... I agree, it seems like Canadair and Embraer will take over the small stuff and most start up airlines are sticking with Airbus (lower maintenance costs?) Don't forget, the A320 series includes the A318 now ( 108 seats IIRC ). I was quite surprised that the A318 was developed as a result of customer demand ( Lufthansa ? ) but when you consider that the A320 series encompasses a greater than 2:1 pax capacity with unified sytems - it kinds makes sense. I wish someone would post the prices and performance of the aircraft so we could compare and see why airlines pick the planes they do. I wish ! Of course that would also depend on your ( the airlines ) accounting methods too. Graham |
#16
|
|||
|
|||
Thomas Borchert wrote:
Jarg, Because we like American companies to be successful as it translates into more jobs and more money for Americans! And who would be "we"? This is the Internet, not the USAnet. Mercuns tend to forget they're not the planet's only technically competent inhabitants. More to the point: A large portion of the A380 (40 percent, IIRC) will be built in the US. It will ? Where did you hear that ? News to me. You ever heard of this new-fangled thing called globalizaton? It's here, man. It also involves many 'first world' nation jobs being outsourced to mainly asian countries. I see trouble looming as the asian countries get the expertise and no longer require *us* ! I speak from some experience of the situation. Graham |
#17
|
|||
|
|||
well I hope boeing comes out of this and stays alive, from a pilot
perspective I'm not a fan of joysticks on the side for flight controls and i've worked around them.. they're pretty aircraft, I just wouldn't want to fly in that cockpit. Matthew |
#18
|
|||
|
|||
Smutny wrote:
As I mentioned, it is in the long run. I didn't say that the 737 in all its variations was a mistake. That would be ignoring the historical sales figures. And they go back a long, long way ! What I was pointing to was that Boeing should have continued the product line commonality idea started with the 757/767, bringing to market a whole new airframe to replace the narrowbody fleet. That design would have been reaching full production about now. Instead, they opted to re-hash, for a third time, a 1960's design. So..... Airbus's idea of making multiple capacity variants of the ( 737 competitor ) A320 ( A318, A319, A320, A321 ) was more sensible I guess ? Same cockpit - same operating procedures - same handling ( fbw ) . Then they made bigger twin aisle versions ( A330, A340 ) with the same flight controls and similar handling - making conversion very easy. Was that what you reckoned Boeing should have done after 757/767 ? Boeing has put itself in the precarious position now of developing a new design as the worlds major airlines are struggling. A380 is a pretty new concept too ! Mind you, I saw a documentary where Airbus's Chief Exec simply jokingly described it as an A330 stuck on top of an A340 ! Similar cockpit ( but somewhat larger ), controls and handling to other fbw airbuses are promised. Ease of conversion once again. Graham |
#19
|
|||
|
|||
Kevin Brooks wrote:
The 7E7-3 will doubtless replace even 737's (and their Airbus equivalents) on some routes that can use the greater capacity. " that can use the greater capacity " is IMHO the ctical factor. If you don't need the capacity ( or its range ) - you don't need 7E7 - period. Do you *really* see 7E7s replacing 737s ? Sounds bonkers to me. Totally different operating scenarios. Graham |
#20
|
|||
|
|||
Airlines that use 737's on trans-Atlantic routes may benefit from the
7E7 as a replacement if load factors increase. But the vast majority of 737's live in a high cycle, short flight environment. Not something touted as a big selling point of the 7E7. -j- On Mon, 20 Sep 2004 06:21:33 +0100, Pooh Bear wrote: Kevin Brooks wrote: The 7E7-3 will doubtless replace even 737's (and their Airbus equivalents) on some routes that can use the greater capacity. " that can use the greater capacity " is IMHO the ctical factor. If you don't need the capacity ( or its range ) - you don't need 7E7 - period. Do you *really* see 7E7s replacing 737s ? Sounds bonkers to me. Totally different operating scenarios. Graham |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
What are Boeing's plans? | Pooh Bear | General Aviation | 55 | September 30th 04 07:59 PM |
What are Boeing's plans? | David Lednicer | General Aviation | 6 | September 27th 04 09:19 PM |
What are Boeing's plans? | Pooh Bear | Owning | 12 | September 27th 04 09:07 PM |
What are Boeing's plans? | Pooh Bear | Owning | 13 | September 27th 04 06:05 AM |
What are Boeing's plans? | David Lednicer | Military Aviation | 62 | September 27th 04 12:23 AM |