EARLY in 1936, at the instigation of the National Physical Laboratory, the Singing Propeller Committee of the Institution of Naval Architects included among other recommendations in its report a ...

The CLT propeller recently underwent real-world testing, which proved, according to its designer and manufacturer that the propeller can help to reduce or eliminate hull-induced vibrations and noise ...

Retrofit programme is delayed for tests to show if vibration affects Hawkeye's turboprop engine or avionics The US Navy's programme to retrofit new eight-blade propellers to its Northrop Grumman E-2C ...

This paper by TSAW Drones discusses the need for less noise in UAVs, how these toroidals can benefit the drone industry, how these propellers came to be and how exactly they reduce the noise. Also, in ...

A joint research project carried out by Wärtsilä and City University London has succeeded in identifying the specific design parameters that create the risk of 'singing' propellers. Though rare, ...