Linked Questions

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 ...

It seems like a lot of the newer airliners have winglets or wing fences. How do they improve aircraft performance?

This question discusses how wake turbulence can affect planes flying in formation. It got me wondering, how do aircraft (the wings in particular) form wake turbulence to begin with? It can't be as ...

When designing an aircraft, there has to be a decision as to the aspect ratio of a wing. It's been said that having a higher aspect wing will reduce drag for the same wing area, however most of the ...

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 ...

Is there any benefit to using swept wings for speeds up to 250km/h ? (By the way..Why do some fast birds like falcons, swifts and most migratory birds use swept wings or raked wingtips since they fly ...

I've just done some research on the Boeing 787 and the 737. But the 787 and 737 MAX seem almost completely alike. Are there any differences between the 787 and the 737 MAX?

Comments below the NASA Armstrong Flight Research Center video Proving Prandtl- With A Twist! incclude: This video is entirely a hidden jewel in youtube, it deserves much more attention than what it ...

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/...

What kind of dihedral would be most stable? An airplane with wing span x ft and whose dihedral begins from the root(attachment point to the fuselage) of the wings and whose wing tips are y ft above ...

I know that a thicker airfoil at root will strengthen the root spar but what is the reason behind using thinner airfoils at the tip? Is it because thinner airfoils have higher stalling angles of ...

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 ...

If anybody could explain this in an intuitive way I'd really appreciate it. I haven't been able to find a clear answer on this. I understand that the increase in effective AoA/CL and the spanwise flow ...

I am trying to build a passive hydrofoil board. Something like this: I want to use wood and i am coming to the conclusion that i want to optimize drag for a given ...

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 ...