Linked Questions

5
votes
1answer
7k views

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, ...
10
votes
1answer
2k views

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/...
0
votes
1answer
574 views

Why don't airbus aircraft have raked wingtips? [duplicate]

Most airbus aircraft have sharkfin winglets or blended winglets. Why is it that none of them have raked wingtips like the 777-300ER?
5
votes
0answers
249 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) ...
56
votes
5answers
12k views

Is a winglet better than an equal span extension?

Is there indisputable evidence that a winglet improves performance over an equal span extension? Please note: I am only interested in L/D improvements. Winglets do improve roll performance, that is ...
11
votes
3answers
25k views

How does the raked wingtip of the Boeing 787 work?

The wing tips are very different on these airplanes. The wingtip on a Boeing 787 is a sharp triangle, while the wingtip on a Boeing 737-300 is flat. British Airways Boeing 787-8 G-ZBJC wingtip | by ...
12
votes
2answers
8k views

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 ...
9
votes
3answers
2k views

Why do winglets reduce maneuverability (of fighter jets)?

In this answer Ethan makes the following statement concerning winglets on fighter jets: [Winglets] reduce maneuverability which is why you don't see a winglet on a fighter jet I could image that ...
10
votes
4answers
1k views

What role, if any, does visual aesthetics play in the design of modern airliners?

Another way of asking the question: Are there any distinctly identifiable features of particular modern airliners that are there for design reasons that have less to do with engineering than with ...
0
votes
1answer
7k views

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)? ...
5
votes
1answer
1k views

Why is a wing tip's front edge tapered?

I am beginner and I want to understand the advantage of a tapered wing tip front edge beyond reducing the mass. How does this minimize or effect vortex drag, etc. Can someone help me to visualize this ...
4
votes
1answer
510 views

When are winglets most effective?

If winglets reduce induced drag, induced drag is greatest at slow speeds. When are winglets most effictive?
3
votes
3answers
1k views

Aerodynamics of double winglets

I've read here on Aviation SE that the aerodynamics of winglets on an aircraft are easily described as "extending the airfoil". Thus, as I understand it, a winglet is like stretching the airfoil a ...
2
votes
0answers
119 views

Why do newer commercial aircraft have their wingtips curved up? [duplicate]

Lately I've seen a lot of aircraft that have the wingtips curved up. What is the reason for this?
1
vote
0answers
116 views

What are the benefits of raked wingtips over tapered wingtips? [duplicate]

This post shows the differences between winglets and raked wingtips. I'm curious why raked wingtips have been developed when there are tapered wingtips. What are the benefits of raked wingtips over ...