Sunday Science – Axiom Propeller Video

Axiom are a British company who manufacture innovative propellers for yachts and narrowboats. They have an excellent video posted up on YouTube which was produced in the Emerson Cavitation Tunnel in 2012 by Rod Sampson, Mehmet Atlar and George Politis. This is an excellent example of an open water propeller test, showing increased extent and interaction of cavitation as the advance coefficient, J, is reduced (i.e. the propeller rpm is increased).

What types of cavitation can you spot?

I plan to post further about some of the experimental techniques seen in videos such as this – watch this space!

A few snippets can be seen here:

#sciencesunday – which types of cavitation can you spot? See our website blog for more….#navalarchitecture #marinetechnology #propeller

A post shared by NCL Marine Propulsion (@nclcavitation) on Feb 11, 2018 at 1:29am PST

Same propeller, lower J value (higher rpm). What's happened to the cavitation? #navalarchitecture #marinetechnology #ship #propeller

A post shared by NCL Marine Propulsion (@nclcavitation) on Feb 11, 2018 at 9:44am PST

The complete video from Axiom is here:

NB: Ignore the comments “below the line” – some are bad science!