Have you ever wondered how the massive propellers that drive the world's biggest ships are made and installed? In this behind-the-scenes engineering documentary, we take you deep into the world of ...

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Underwater Propeller Blade Straightening (Press Release) June 13, 2012. With all five blades of its propeller severely bent, a 290-meter container vessel needed a fast , on-site solution to ...

Though loop propellers aren't widely used for commercial shipping vessels — the main culprits of underwater noise from propellers — they could one day replace those ships' noisy screw ...

Instead of using two sets of propellers, the engineers designed an innovative system that uses one motor and two separate gearboxes: one rigged for aerial flight and the other for underwater movement.

YORKTOWN HEIGHTS - PVC pipe, duct tape, zip ties, screws, small buoy floats and motorized propellers — these were the materials science teacher Patrick Burke handed his class to make underwater ...