On Saturday, November 24, 2018 at 11:11:04 AM UTC-5, john firth wrote:
On Thursday, November 22, 2018 at 9:33:17 AM UTC-5, son_of_flubber wrote:
https://techxplore.com/news/2018-11-...ver-plane.html

Has anyone quoted or attempted to assess efficiency?

John F

Look at the links posted by Luke Scharf above