Testing a TOROIDAL propeller UNDERWATER

Toroidal Propeller Testing on my Electric Surfboard

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Cooling Fan: Toroidal vs Normal

Testing 8 Innovative New Boat Propeller Designs

I Turned MIT Award Winning Toroidal Propeller Into A PC Fan | Fan Showdown S5 Special

Our DIY Sub Explores A Flooded Hole To MAX DEPTH (PT3)

Exploding 3D Printed Toroidal Rocket Powered Helicopter

The Genius of Cycloidal Propellers: Future of Flight?

7 STRANGEST New Drones -2-

Man Builds Hyperrealistic RC Plane at Scale | Airbus A350 Replica by @RamyRC

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Amazing Invention- This Drone Will Change Everything

The Unexpected Genius of Bionic Propellers

Building the MOST MANEUVERABLE submarine

TOROIDAL PROPELLER on a DRONE | DIY 3D printed

Building a HIGH SPEED Rocket Plane

Underwater Drone Built With Parts From a Flying Drone

Making 3D prints actually waterproof

Man Builds Miniature RC Excavator Using Only PVC | by @VangHa

Drone Propulsion - The LATEST Breakthroughs!