MadDogJT8D From United States of America, joined Oct 2009, 416 posts, RR: 1 Posted (5 years 10 months 1 week 5 days 21 hours ago) and read 5896 times:
Seems like a somewhat trivial question, but I was watching CNBC and they showed Air Force 1 landing and I realized that neither of the VC-25's are outfitted with winglets. Why is this? Why weren't they outfitted with winglets from the factory? They were built with what looks like a military version of the CF6-80C, so they must be new enough to have been around when winglets were designed for the 744. It would certainly be prudent as a fuel saving measure to do this kind of mod, since they have been outfitting the 757 and 737 equivalents with winglets over the past year or two. Anybody have any insight into this area?
JAGflyer From Canada, joined Aug 2004, 3754 posts, RR: 4
Reply 1, posted (5 years 10 months 1 week 5 days 21 hours ago) and read 5862 times:
I suppose you mean you saw it landing in YYZ. I have been listening to the feed for the last 15 minutes. I would guess that the VC-25 does not have winglets due to hit being based on the -200 series 747 airframe. As you know, the 747-200 does not offer the option of winglets.
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cadet57 From United States of America, joined Jul 2005, 9104 posts, RR: 27
Reply 3, posted (5 years 10 months 1 week 5 days 20 hours ago) and read 5741 times:
Perhaps because the "current" AF1 was designed in the late 80's and delivered in 1990 before winglets were commonplace. Or the fact that its a modified -200 airframe. Not to mention there are no winglets on 747s besides the -400
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NorthStarDC4M From Canada, joined Apr 2000, 3174 posts, RR: 34
Reply 4, posted (5 years 10 months 1 week 5 days 20 hours ago) and read 5581 times:
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They looked at blended winglets for the 747 classic but no one bought it as i recall.
Also, with the modifications in the VC-25, would the wing structure be modifiable to allow them, don't forget the 744 has a wing extension as well as the winglets.
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KC135TopBoom From United States of America, joined Jan 2005, 12346 posts, RR: 51
Reply 7, posted (5 years 10 months 1 week 5 days 18 hours ago) and read 5331 times:
Also if we are looking at a new AF-1, based on the B-747-8I, in 2017, or so there would be no reason to equip the VC-25As with winglets. I am sure they will stay in the USAF inventory until about 2025, or so, and redesignated as C-25As, there still would not be much of a ROI in 15 years.
In stead of winglets, or blended winglets, raked wingtips might be cheaper and a faster ROI.
DLSLC From United States of America, joined Jan 2005, 89 posts, RR: 1
Reply 10, posted (5 years 9 months 4 weeks 1 day 14 hours ago) and read 4086 times:
Quoting CitationJet (Reply 6): The government's priority is not to minimize operational costs for AF1.
My thoughts exactly. I have done a lot of research on AF1, and there is very little concern about money and expenses when it comes to flying that bird. They are willing to do whatever it takes to complete the primary mission, and little concern for much else.