If you’ve got a talent, might as well run with it, especially if your talent is absurdly specific and cool. Aliaksei Zholner’s talent, for instance, is making tiny functional engines out of paper, and after tackling a V8 and a V8 with a throttle, he’s on to the rotary approach.
Despite having some unique differences from and advantages over piston-centric designs, pistonless rotary engines like this one have generally fallen by the wayside when it comes to practical use, mostly because they offer less-than-stellar gas mileage—which is bad enough on its own and worse in the face of tightening EPA restrictions.
But this engine is made out of paper (save for a transparent cover just so that you can see inside) and runs on air, so no biggie.
Watch the video here.
By Eric Limer for www.popularmechanics.com