Measuring the deformations of a composite propeller at full scale

AuthorsNicola Grasso
Conference/JournalMARIN Report 124
DateAug 15, 2018
Reading time6 minutes

Important measurement data was gathered at full scale to facilitate the design of shape-adaptive propellers. Ship propellers are generally constructed using metallic materials such as bronze alloys, while fibre-reinforced composites are mainly seen on smaller recreational craft and yachts. These composite materials are lower in weight, have good fatigue properties and possibly geometric flexibility, which are important drivers for the improvement of ship performance. In particular, the possibility to adapt the geometry of the propeller blades through structural flexibility may enable improvements in fuel efficiency, underwater-radiated noise and onboard comfort.

 

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Composite propeller at full speed. Colour bands indicate the measured deformations
Tags
waves, impacts and hydrostructuralmeasurements and controlpropeller and cavitationmonitoring