Questions tagged [winglets]

Wing devices on the end of the wing for aerodynamic purposes.

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26
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3answers
3k views

Is wingtip design mature?

There are many wingtip design, all made to reduce vortex related drag, and neither boeing nor airbus seems to prefer one over another. They move from one design to another at each new aircraft, always ...
10
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1answer
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Why are there different types of winglets? [duplicate]

If all winglets serve the same purpose (to reduce vortex drag), why do different aircraft have different winglets? This question is not trying to get a comparison of the development of winglets/...
26
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5answers
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Is this a wing-tip device on the A-10 “Warthog”?

Source: Flickr courtesy of: U.S. Air Forces Central Public Affairs, photo by Master Sgt. William Greer Notice at the side edges, the wing peels down and back around towards the fuselage. (The ...
31
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6answers
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Why is it rare for small aircraft to have winglets?

I've noticed that winglets are very rare on small aircraft. I wonder why this is the case. Wouldn't they have the same advantages, especially because they travel at low speed? Or is it just a wrong ...
3
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1answer
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What winglet airfoils are used on the Boeing B737?

I would like to know what airfoils are used for the Boeing 737 winglets.
6
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4answers
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Why don't airliners have rudders on the winglets?

There are a couple airplanes out there that use the winglet as the rudder, but why doesn't the winglet have a rudder on it to increase the turn of the aircraft?
13
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4answers
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Why don't horizontal stabilizers have winglets?

Winglets are used to reduce induced drag on the main wings of an aircraft as per explanations on wikipedia. Since they are very effective I was wondering why they are not installed also on horizontal ...
9
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1answer
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Minix wingtip vortices mitigation - How does it work?

I stumbled upon this article: Minix wing tip device promises 6% gain in fuel efficiency for airliners. Such an economy is appealing and I must confess the design is "sexy". Could someone expand a ...
7
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1answer
509 views

What is the purpose of the winglets on the Socata TB-31 Omega vertical stabilizer?

Aérospatiale-Socata built a prototype of the TB-31 for the French Air Force, which never went to production: Source: netAirspace.com, photo by miamiair What is the purpose of the winglets at the top ...
5
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2answers
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How much fuel do the new A320-Winglets burn vs. the B737-800?

Now that the new A320-Winglets have established themselves, I'm wondering if they have better fuel consumption than the B737-800? I was told that Boeing used to be marginally better. Is that still ...
4
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6answers
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Can a supersonic aircraft have winglets?

In order to have laminar flow over the wings which helps in friction drag reduction, a number of airfoil designs have been proposed from the past to the latest 737 winglets. But if we design a ...
32
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6answers
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Why do propeller blades not have winglets?

On the first look this question might sound ridiculous and maybe it is. But as propeller blades act by the same physical laws as wings, and winglets reduce the induced drag by quite a bit, then why ...
5
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1answer
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What are some differences that make the new 737 MAX winglets more efficient than a conventional winglet? [duplicate]

I was reading this article about the Boeing 737 MAX final assembly and it was saying something about the new winglet generating lift and increasing efficiency. Can you explain to me how this works, ...
5
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0answers
244 views

Is the wingtip fence as effective as the winglet? [duplicate]

My guess would be no because it does not reflect the air as well.Wingtip fence Winglet What I am basically asking is does the wing tip fence have the same amount of drag reduction (wing tip vortex) ...
4
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1answer
507 views

How can I get started on a winglet design for a small remote controlled aircraft?

I'm a member of a student competition team, we design light aircraft (total airplane overhead area is limited to 0.9 m²) capable of carrying higher payload. The competition also limits the takeoff ...
0
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1answer
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Winglets vs Sharklets vs Blended wingtips [duplicate]

I tried to look for this answer but I was unable to find a complete one. What is the differences between Winglets, Sharklets (used for example on A350 XWB), and "Blended wingtips" (used only on 787)? ...
12
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2answers
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Why do newer 737s use two different styles of split winglets?

All new 737s use split-tip winglets, which are more efficient than the simpler blended winglets previously used. However, for no clear reason, they use two different types of split-tip winglet: New ...
7
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3answers
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Why do some aircraft have pods on their wing tips?

By JetPix [GFDL 1.2 or GFDL 1.2], via Wikimedia Commons Why do some aircraft have pods on their wing tips, like this Cessna 414?
7
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3answers
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Why has Boeing used mini winglets on the 737-200?

I found mini winglets just in B 737-200. What's the differences between mini winglets and the blended ones which Boeing uses in more recent versions? (picture source)
2
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2answers
248 views

How do endplates reduce induced drag?

I have heard the explanation which states that the endplates reduce the tip vortex formation thereby reducing induced drag. From what I understand induced drag is the backwards component of the total ...
0
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0answers
570 views

Why don't more airplanes incorporate spiroid winglets? [duplicate]

In typical airplanes, lift induced drag can account for the majority of the overall drag. Why don't more aircraft employ methods to reduce this and specifically why not spiroid winglets? From every ...
-3
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1answer
317 views

Design winglets to counteract tip vortex [closed]

I want to know the effect of the wingtip vortex to design a winglet (or a wing horizontal extension) to counteract* this effect. How could I calculate the momentum produced by the tip vortex, in ...