Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Old Design?  
User currently offlineFlyLAX From United States of America, joined Oct 2003, 154 posts, RR: 1
Posted (10 years 11 months 4 days ago) and read 1522 times:

Why do people say that an airplane that has been constantly improved over many years in service is still an old design? Lets take the 747-400 for example. The first 747 flew in 1970? But compare the 747-100 to the 747-400 and you'll see that they are two totally different airplanes. IMO, same concept, different design.

Same with the 737. To me 737-100 and 737-700/800/900 and 737 classics are totally different airplanes.

Same goes with the A340. A342/3 to me is different than the A345/6.

Anyone elses thoughts?

3 replies: All unread, jump to last
 
User currently offlineChallengerDan From Canada, joined Sep 2003, 173 posts, RR: 0
Reply 1, posted (10 years 11 months 3 days 22 hours ago) and read 1487 times:

The original aircraft design dates back to a different era in the matters of design philosophy. I agree they did make it better, but they still need to work with some drawbacks from the original design. By bringing in new brand new platforms, they can make it even more efficient. Just look at cars, for example. A model will last anywhere from 4 to 8 years with some minor evolutions. After that, they usually bring a brand new chassis wich will benefit from new material, manufaturing and design technologies. Same thing applies to aircraft designs. Just think of the advance in composite materials for example wich can save a lot of weight. Fly-by-wire, wich takes all of the mechanical linkage and cables out of the flight control system.


if your flight goes MX in YUL, I might be called to fix it!
User currently offlineTrident From United Kingdom, joined Feb 2000, 484 posts, RR: 0
Reply 2, posted (10 years 11 months 3 days 22 hours ago) and read 1451 times:

The main advances on airliner design since the 1960s has been in wings. Although Airbus boast about the wonders of digital Fly By Wire, the real secret of Airbus performance is their advanced wing designs. Both the Boeing 737 and 747 are saddled with wings that were drawn up (literally) in the early to mid 60s. Of course they have been subject to modifications since those days but the designers are essentially stuck with the basic wing shape as originally designed. You only have to look at the plan view of a 737/747 compared to an A320/A330 to see how things have changed over the decades.

The only Boeing with truly modern wing shape is the 777.


User currently offlineB2707SST From United States of America, joined Apr 2003, 1369 posts, RR: 59
Reply 3, posted (10 years 11 months 3 days 22 hours ago) and read 1426 times:

Boeing designed a completely new supercritical wing and flap system for the 737NGs. As mentioned, the 747 still sports its 1960s-vintage airfoil, but Boeing proposed "reshaping" it to a more supercritical cross-section for the 747X. This change may appear on the 747 Advanced, if built.

Interesting link on the 747X wing:

http://www.aviationnow.com/content/publication/awst/20010312/747x.htm

--B2707SST



Keynes is dead and we are living in his long run.
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Old Design? posted Wed Dec 31 2003 07:18:26 by FlyLAX
THY Back To Old Tail Design? posted Fri Jul 11 2008 07:15:02 by Vasu
Why Iraqi Aircraft Still Have Old Flag Design posted Fri Oct 22 2004 23:18:39 by Alberchico
New Design Vs Old: You Sick Of This Topic Too? posted Wed Oct 16 2002 00:45:56 by Boeing nut
The Old Elal 742 At TLV.. posted Wed Aug 12 2009 18:20:19 by SXDFC
Registration Search For Very Old Flights? posted Fri Jul 31 2009 12:59:40 by Phatty3374
Replacement Of Old SeaTac Airport Viewing Park posted Wed Jul 22 2009 13:17:40 by Ferrydxer
IAD AeroTrain Status & Old Fountains? posted Mon Jul 20 2009 14:53:34 by IAD51FL
Old Overseas Airport Diagrams posted Wed Jul 15 2009 21:36:23 by Crownvic
Who Has Got An Old AF Timetable (1998) posted Mon Jul 13 2009 03:25:50 by Tobias2702