New A380 plus winglet
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The maximum take-off weight of the A380 increases with the plus version to 578 tons. This means that airlines can decide whether they want to transport up to 80 passengers more on the same range as today, or whether they want to increase the range by 300 nautical miles to 8500 nautical miles
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Winglet design is constantly evolving - Airbus apparently thought the wingtip fences were near state of the art when the A380 was designed. Note that the "split" winglet is a fairly recent development, and the split winglet on the 737 Max is not the same as the one available on the 737NG.
That being said, Airbus does appear to be a bit slow on the uptake regarding A380 winglets. I have to assume it'll require some fairly major structural updates to the wing to incorporate...
That being said, Airbus does appear to be a bit slow on the uptake regarding A380 winglets. I have to assume it'll require some fairly major structural updates to the wing to incorporate...
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Good question ....
I would have thought the aerodynamics were identical .. regardless of whether the type starts with an A or a B ....
I can understand improvements ... but I would have thought they would almost mirror each others research ...
The wingtip "triangle" on the A380 is the same as the A320 30 years ago ... ??
With the MPA B737 maybe the raked wingtips have better turbulence penetration characteristics for low level surface probes ...
I would have thought the aerodynamics were identical .. regardless of whether the type starts with an A or a B ....
I can understand improvements ... but I would have thought they would almost mirror each others research ...
The wingtip "triangle" on the A380 is the same as the A320 30 years ago ... ??
With the MPA B737 maybe the raked wingtips have better turbulence penetration characteristics for low level surface probes ...
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Sticky Fingers - This is my best guess! The B737 Poseidon is probably more efficient for the mission, but the 38m wingspan won't fit on your average shorthaul gate - hence the Scimitars for the NG...
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Cough - you might have nailed it for B737...The Poseidon has an 11ft increase in span compared to the Pax Version.
- But it still doesn't explain why the A350 has Blended winglets and Boeing uses Raked Tips on their new generation long haul fleet.
Only half a speed-brake
My aerodynamics / aircraft structure notes advise that additional wingtip extention OF THE SAME LENGTH as a winglet - endplate.
- has better efficiency
- is structurally lighter
- is more economical to design.
So option 1 always, as long as the resulting wingspan is not a problem. Oh, save from this little flutter thing.
787 wingspan = 60 m
350 wingspan = 65 m
Looking at both, still, the distinction that one is a straight wing and other a winglet is not that obvious to make.
- has better efficiency
- is structurally lighter
- is more economical to design.
So option 1 always, as long as the resulting wingspan is not a problem. Oh, save from this little flutter thing.
787 wingspan = 60 m
350 wingspan = 65 m
Looking at both, still, the distinction that one is a straight wing and other a winglet is not that obvious to make.
Cough pretty much nailed it. Boeing believes the raked wingtips to be a better solution than winglets, wingspan permitting. Hence the folding wingtips on the 777X. For the commercial 737, adding 10+ feet to the wingspan would create problems fitting into the gates, therefor winglets are used.
The winglets require quite a bit of structural strengthening of the wing - a buddy who worked the 757/767 winglets for Aviation Partners said it cost ~$1 million to install the wing structure that allowed the winglets to be added - it's not just a bolt on addition to add winglets.
The winglets require quite a bit of structural strengthening of the wing - a buddy who worked the 757/767 winglets for Aviation Partners said it cost ~$1 million to install the wing structure that allowed the winglets to be added - it's not just a bolt on addition to add winglets.
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The folding wingtips on the 777X are to keep it within the ADG-V/ICAO-E 65m/213' box. Boeing is choosing to fit their airplane to existing airport infrastructure (nearly every airport can take Code E) rather than rely on the remaining airport authorities who have already opted once not to upgrade to Code F to do so in the future.
Read somewhere that regular winglets were not used on the P8 as
they are more vulnerable to ice build up when you're spending a lot
of time stooging around in cloud at the lower levels.
they are more vulnerable to ice build up when you're spending a lot
of time stooging around in cloud at the lower levels.
The A380 had no immediate competition when launched, so adding winglets at the time was unnecessary. Now there are plenty around the airlines, Airbus can use the winglet as a way for airlines to say 'We've got the latest A380s, not old ones like those over there.' Hence sales of the latest model to those customers who want the most up to date looking fleet.
With regard to the P-8 Poseidon, it is a maritime patrol aircraft, which on occasions will rely on Mk1 eyeball to look for people and objects lost, or not wanting to be found, at sea. Putting a great big view blocker out on the tips, behind which things might get hidden and which also hinders the focus of said mk1 eyeball, wouldn't make sense.
With regard to the P-8 Poseidon, it is a maritime patrol aircraft, which on occasions will rely on Mk1 eyeball to look for people and objects lost, or not wanting to be found, at sea. Putting a great big view blocker out on the tips, behind which things might get hidden and which also hinders the focus of said mk1 eyeball, wouldn't make sense.
