Noise & Vibration

Cavitation-eliminating boss cap could provide big gains in efficiency

7th March 2024 | Naval & Patrol, Warship Technology - News

What is described as a ‘revolutionary’ propeller hub vortex cavitation-eliminating boss cap has successfully completed validation tests at a hydrodynamic research centre in Sweden. The propeller hub – which could provide gains in propulsive efficiency for a wide range of vessels, including warships – will now undergo ship model basin trials to verify the efficiency […]

Cavitation awareness taken to the edge

17th April 2023 | The Naval Architect - News, Equipment

Canadian study shows propeller edge deviations increase URN As any marine engineer or hydrodynamicist can tell you, propeller cavitation is a reality of shipping. But as the causes of anthropogenic underwater radiated noise (URN) fall under increasing scrutiny from environmentalists and regulators there is mounting pressure to develop a deeper understanding of this perennial problem. […]