This is one of the first Pterofin prototypes that worked really efficient in front of a fan across a room on low speed and later debuted at UW's STS (Science and Technology Showcase) winning us third place!
Terrafin 2.0 (all bamboo)
I should mention, in this next video we only had a few hours to test our prototype at the wind tunnel and we didn't figure out until a few days later, that when we taped down the wires to the three-phase permanent magnet generator, we were locking up the axle because of its magnetic built-in overspeed protection. The generator is directly connected to the flywheel, which is why it wasn't exactly flying... We figured that once we get it working smoothly then we'll measure it's power, but the illusive mechanical issue was never solved and we ran out of time.
Pterofin hits the, not so open seas using a water noodle and miniature wind turbine kit to create hydroelectricity.