Algodoo

It's not every day that someone comes up with a new air motor!

This is awesome! If you set spring strength to 100 and motor speeds to 300 is just flies up!

Mind you, its an INCREDIBLY light bird...

this thing can't fly by design. in order to fly you have to manipulate the overall "length" (plane in 3d) of the wings relative to the flight direction in order to produce any propelling powers.. your machine just pushes itself up and down with the wings but because the first push-down gets absorbed by the ground you get a starting impulse pointing upwards. Interesting idea nevertheless

i know that its very light but it`s still more heavy than air and if you look at the design the wings are shorter when they go up than down that produce little lift thats enough for it to fly...

pretty good 4/5