KCmike
Posts: 531
Joined: Mon Jul 19, 2004 10:13 am

Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 1:24 am

From everthing I read installing a set of winglets on an aircraft cuts down on fuel consumed, time, and is environmentaly friendly. Is it incredibly expensive to install them? Because it seems as if they are saving airlines alot of money. I mean why dont all airlines look into installing them on their 737's or 757's. I understand it doesnt make as big an impact on the shorter flights, but wouldnt it help save $$$ if they were on a 777?
Cleared for the option...
 
MidnightMike
Posts: 2810
Joined: Thu Mar 06, 2003 10:07 am

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 1:52 am

Depends, perhaps when the airline ordered the airline the aircrafts, winglets were not available.

When the winglets did become available, maybe the airline can not afford the cost of the winglets.

Maybe the routes that the aircraft is used for, winglets would not make that much of a price savings that would warrant the cost of the winglets.

Who knows, so many different reasons.
NO URLS in signature
 
EMBQA
Posts: 7798
Joined: Sat Oct 25, 2003 3:52 am

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 2:30 am

First, winglets only become effective over a long range, so adding them to 'all' aircraft may not be cost productive. Notice.. with Southwest they are only being added to their longer ranged Boeing 737's.

As for the Boeing 777, winglets are not needed due to the design of the wing. It is even more noticiable with the wing on the Boeing 777-300.
"It's not the size of the dog in the fight, but the size of the fight in the dog"
 
srbmod
Posts: 15446
Joined: Tue Mar 20, 2001 1:32 pm

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 4:06 am

The 767-400 went with raked wingtips, as it they were found to be more aerodynamically efficient than winglets. One of the requirements given to Boeing by DL for the 767-400 was that it would be able to use the same gate space the L-1011s used, and supposedly this design requirement helped to quash winglets for the 764.
 
OzLAME
Posts: 336
Joined: Thu Feb 17, 2005 8:40 am

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 10:14 am

It may just come down to money. Virgin Blue Airlines here leases 737-700s and -800s from all over the place and has about 50 aircraft all up. It has aircraft of both models with winglets fitted and without. From what I've heard the sole reason for whether one of their a/c has winglets or not is whether the original purchaser ordered them one way or the other.

View Large View Medium
Click here for bigger photo!

Photo © Will Lanting
View Large View Medium
Click here for bigger photo!

Photo © Christophe Van Lint



View Large View Medium
Click here for bigger photo!

Photo © Chris Thurtell
View Large View Medium
Click here for bigger photo!

Photo © Montague Smith


As an aside, I think the -700 with winglets just looks completely wrong; it looks so stumpy from head-on or below.
Monty Python's Flying Circus has nothing to do with aviation, except perhaps for Management personnel.
 
boeingatl
Posts: 141
Joined: Wed Jan 05, 2005 12:01 pm

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 11:44 am

The 767-400 went with raked wingtips, as it they were found to be more aerodynamically efficient than winglets. One of the requirements given to Boeing by DL for the 767-400 was that it would be able to use the same gate space the L-1011s used, and supposedly this design requirement helped to quash winglets for the 764.

I see that DL uses 21 767-400 and CO uses 16. Who else uses the 764? Was Delta's order enough to dictate the design of the wing?
boeingATL
 
AirWillie6475
Posts: 2372
Joined: Thu Jan 27, 2005 1:45 pm

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 2:50 pm

Winglets would make sense for Airtran 737s since they generaly fly longer flights. I am still wondering why they haven't installed them yet since Airtran is big on saving costs.
 
NWADC9
Posts: 3940
Joined: Tue Jun 01, 2004 12:33 am

RE: Why Not Winglets On Every Airplane?

Fri Jun 03, 2005 10:31 pm

Quoting BoeingATL (Reply 5):
Who else uses the 764?

Just DL and CO
Flying an aeroplane with only a single propeller to keep you in the air. Can you imagine that? -Capt. Picard
 
justplanesmart
Posts: 676
Joined: Thu Mar 15, 2001 3:25 pm

RE: Why Not Winglets On Every Airplane?

Sat Jun 04, 2005 7:15 pm

Quoting AirWillie6475 (Reply 6):
Winglets would make sense for Airtran 737s since they generaly fly longer flights. I am still wondering why they haven't installed them yet since Airtran is big on saving costs.

As I understand it, the increased winspan with the winglets makes the planes too big for some of AirTran's gates at Atlanta.
"So many planes; so little time..."
 
AirWillie6475
Posts: 2372
Joined: Thu Jan 27, 2005 1:45 pm

RE: Why Not Winglets On Every Airplane?

Tue Jun 07, 2005 2:27 pm

Quote:
As I understand it, the increased winspan with the winglets makes the planes too big for some of AirTran's gates at Atlanta.

What? How small are their gates? The added wingspan to a 737 is not that much.
 
User avatar
HAWK21M
Posts: 29867
Joined: Fri Jan 05, 2001 10:05 pm

RE: Why Not Winglets On Every Airplane?

Tue Jun 07, 2005 3:52 pm

Quoting OzLAME (Reply 4):
think the -700 with winglets just looks completely wrong; it looks so stumpy from head-on or below.

If Adding Winglets,saves money.The Look wont matter  Smile
As said Above,It depends on the Sector operated.Why carry extra weight when the cruising time is less.

regds
MEL
I may not win often, but I damn well never lose!!! ;)

Who is online

Users browsing this forum: Horstroad, ro1960 and 16 guests