Propeller cavitation

Propeller cavitation

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Caption: Propeller cavitation. Test being carried out on a propeller to study cavitation effects. Cavitation is the formation of bubbles in a liquid due to changes in pressure, as happens in water being churned by a propeller. Studies of cavitation aim to improve propeller design to reduce the turbulence caused by this unwanted effect. Photographed in the Ship Division of the National Physical Laboratory, Teddington, UK. For a set of similar images showing cavitation, see V330/161 to V330/164.

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