Ship propellers are a constant compromise between efficiency, vibration, cavitation, and power delivery. This video explains why adding blades can solve serious mechanical problems, and why engineers ...

A new propeller created by the Ningbo Institute of Materials Technology and Engineering (NIMTE) coated with a skin mimicking that of a dolphin holds the promise of significantly reducing fuel ...

MORE THAN 1,000 metres below the surface of the oceans, darkness reigns. For animals living in this perpetual twilight, vision is irrelevant; acoustic signals, instead, are how they navigate, ...