Answers on a postcard.............Anyone?

[NutLoose]

Ok, please explain this? Curiosity killed the cat so to speak............

[Glass Half Empty]

very easy, steps for those with short legs, you can alight at either wing in case of inclement conditions at your parking spot.

[WorkingHard]

Shorter wigspan, same lift????

[Ghostie31]

Reduce wing tip vorticies. Therefore reducing induced drag?

[B2N2]

Vaguely remember reading about this a while ago.
Something to do with copying the way a bird flies...in the sense of adjustable wing tip feathers....like so..



My best guess anyways...

[Rod1]

Been done before in 2000;

http://www.winggrid.ch/index.htm

Full explanation

Rod1

[Ghostie31]

Wahoo! I AM learning something from my Aero Eng degree!!

[DaveW]

Originally Posted by Rod1

Been done before in 2000;

And before that, in the early 80s; there was a Pawnee (or similar) operating out of the Cranfield Institute of Technology with modified wingtips for the same reason. I doubt that was the first attempt, either.