DeltaGator From United States of America, joined Sep 2005, 6341 posts, RR: 13
Reply 1, posted (7 years 6 months 1 week 3 days ago) and read 6316 times:
Let them get out of bankruptcy and then you might see them on the 757s first and then perhaps the 738 planes. The 757 is the transcon plane of cchoice going forward it seems so they could benefit the most from the winglets.
"If you can't delight in the misery of others then you don't deserve to be a college football fan."
RamerinianAir From United States of America, joined Nov 2003, 1486 posts, RR: 0
Reply 2, posted (7 years 6 months 1 week 3 days ago) and read 6254 times:
I think they might add the winglets to the 738s after bankruptcy - the 738s will be around for a LOOOONG time. Some of their 757s are getting older now, it may be a waste to put them on now.
I don't think that the 757 is the aircraft of choic for transcons. It seems that DL is putting the 738 on a few transcons too!
Dl757md From United States of America, joined May 2004, 1562 posts, RR: 16
Reply 9, posted (7 years 6 months 1 week 2 days 14 hours ago) and read 5888 times:
Quoting Alitalia744 (Reply 4): DL's oldest 757s will start retiring next year (purple tails anyone?)
Not sure of your rationale behind this. They're not that old and they're in great shape. They are WAAAAAYYY more reliable than the much newer POS MD-90s everyone on these boards seems to love. I know this because I work on both of them every night. The oldest 57 is coming up on 22 years and the first 50 or so are all 16+. If they do start retiring them what does your crystal ball say that they'll be replaced with?
Quoting RamerinianAir (Reply 2): Some of their 757s are getting older now, it may be a waste to put them on now.
If Alitalia744 is right and they start retiring them soon then maybe they won't put them on them or if they could recoup part of the cost in a resale to FedEx.
N160LH From United States of America, joined Aug 2004, 280 posts, RR: 0
Reply 12, posted (7 years 6 months 1 week 2 days 9 hours ago) and read 5691 times:
Quoting RandyWaldron (Reply 11): I am so surprised, with the a.net geeks on here, that NO ONE remembers Delta's winglet program with the 727 in the 90's.
I totally remember that... If I remember correctly the company that was making them went out of business, so the program was scraped...
On another note... For some reason I remember hearing that DL had purchased 20 or 30 sets of winglets for the 737-800... I might be wrong... but I am pretty sure I remember hearing something to that affect...
On yet another note... I also heard that a company is doing R & D on winglets for the 767-300... and this would make all kinds of sense for DL...
"I do alright up in the air, its down on the ground that I tend to mess up..."
Phollingsworth From United Kingdom, joined Mar 2004, 825 posts, RR: 5
Reply 17, posted (7 years 6 months 1 week 2 days 7 hours ago) and read 5475 times:
Quoting AeroWeanie (Reply 15): Delta was pleased, but Boeing wasn't. They said that they would withdraw their warranty on the airframes if Delta kept the Valsan winglets on.
This doesn't make a whole lot of sense. The airframes would have been out of Warranty by that point. Boeing could have threatened to not support the aircraft. However, they do have legal obligations to that effect because they hold the TC. The STC holder, Valsan, would have had obligations WRT the winglets and any design/stress changes to the wings.
B6WNQX From United States of America, joined Jun 2006, 243 posts, RR: 0
Reply 18, posted (7 years 6 months 1 week 2 days 7 hours ago) and read 5452 times:
Quoting LAXdude1023 (Reply 16): Will this make the aircrafts more fuel effecient? Handle turbulence better? I have to admit my knowledge of the functions of the aircrafts themselves is limited.
From what I have read it will reduce the overal fuel burn, although it has been argued whether or not the benefits exist on shorter flights. The winglets are also supposed to improve takeoff field performance.
AirTranTUS From , joined Dec 1969, posts, RR:
Reply 19, posted (7 years 6 months 1 week 2 days 6 hours ago) and read 5391 times:
Quoting B6WNQX (Reply 18): From what I have read it will reduce the overal fuel burn, although it has been argued whether or not the benefits exist on shorter flights. The winglets are also supposed to improve takeoff field performance.
I wrote a research paper about winglets two years ago and this is whta I found out. The winglets reduce drag which means that the power setting is less for the same True Airspeed (TAS). With the reduced power setting, fuel burn is less and more fuel is available later in the flight, increasing range. If the pilot does not reduce power, however, there will be no major benefit. It will require more down trim because of the increased lift, so any good pilot will realize he should pull the power back instead.
DZ09 From United States of America, joined Sep 2006, 491 posts, RR: 1
Reply 21, posted (7 years 6 months 1 week 2 days 3 hours ago) and read 4960 times:
Improved performance or not, the 727 looks great with them winglets. Big fan of the B727. Only wish Boeing will come up with a new plane that resembles the B727, although I don't expect to see a new trijet ever.
The first dozen or so 738's we got do not have the necessary hard points installed in the wings necessary for the winglet kit. The remaining 738's do.
Here are the reasons we're hearing we may not get winglets on the 738:
1. The older 738's would have to be modified in order to attach winglets, thus it is more expensive to do that.
2. If we added the winglets to the late model 738's we have with the attachments points, it would result in an "uncommon fleet". Meaning some 738's with winglets some without. Why management is concerned about this escapes me, yet it is one of the reasons we've been told.
3. No money set aside for this right now. Winglets are still being actively studied, as is everything else right now that may save dollars, but Delta is still unsure if the large expense of buying and installing the winglets would be recouped by the fuel savings in the short term.
As for 738's flying transcon, you need to check our schedule more closely: They are flying many, many long haul transcon flights. Just flew this morning from IAD to SLC, about 04+38 flying time.
: just a note The drag is lessened by the tip verticle causing a reduction in pressure bleed off the wing tip which in turn reduces wingtip vortecies,
: I knew that but I did not feel like going into specifics that deep. It's been a long day.
: Given how fast the winglets pay for themselves, they would be wise to get them asap.
: Everyone's hearing different things, your points make sense tho... Never said they weren't flying transcons, flew a 738 a couple of weeks ago in Firs
: Very true. As long as the planes are properly maintained, I don't see a problem with the 757s staying until they push 30 years. After all, it's not l
: There's a profound difference between the poster saying that they would be retired "starting next year", which I'll bet money is totally wrong, and "
: Considering every one of those 757s is getting a complete new interior (well, at least seats) there's not much point in forcibly pushing them out the