A bit of a laugh

[JulianEdgar]

He keeps writing to me but now I don't reply.

If anyone wants to take it up with him - https://www.linkedin.com/in/shubham-...rma-565477154/

[jakobnev]

On a more serious note:



But in the end people just went with winglets that reduce the formation of vortices in the first place.

[freebeard]

Eviation Alice

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

Interesting, but I won't hold my breath for an all-electric aircraft to become viable in a short to middle term.

[freebeard]

The gating factor is batteries and there are three or four competing technologies coming into play.

[JulianEdgar]

Originally Posted by jakobnev

On a more serious note:



But in the end people just went with winglets that reduce the formation of vortices in the first place.

Barnard and Philpott (Aircraft Flight, 1995) describe how wingtip feathers on birds give thrust from wingtip vortices. They also make the point that the number of feathers is always an odd number.