I thought it looked heavy when he was carrying it... but flies quite well...
Jerry
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... Festo is developing sort of a "zoo" with their flying, swimming and crawling robots- https://www.festo.com/group/en/cms/10156.htm
Look at their "Aqua-" and "Air-penguins":
https://www.youtube.com/watch?v=u8tfES8gImc
https://www.youtube.com/watch?v=jPGgl5VH5go
Viktor
I built a rubber band powered balsa wood and tissue paper ornithopter when I was about 14. Found the plans in an Encyclopedia Britannica. Wasn't particularly practical though.![]()
I have seen a few RC ornithopters on Youtube. The technology is good enough now that you can control them like a slow RC plane.
Adam