Teignbridge testbed for new propeller designs
Marine propulsion company Teignbridge Propellers has launched ‘HRV1’, a catamaran for physical testing and rapid prototyping of new propellers.
While Teignbridge makes extensive use of numerical analysis methods, these methods still require verification by physical testing to instil customer confidence and to minimise human error related to model setup, explained Mark Phare, sales and marketing director.
HRV1’s key feature is its 375kW retractable pod drive system which provides a highly instrumented test cell.
An onboard gantry crane enables propellers to be quickly changed at sea, enabling multiple propeller trials to be completed in a day.
HRV1 has the ability to sea trial propellers of up to 1.2m in diameter (compared to typical 0.25m in a tank test), enabling the company to work from design to prototype to test results in just a few days.
The vessel is currently configured to support the company's £3m High Efficiency Propulsion Systems (HEPS) project commissioned and funded by the Energy Technologies Institute to reduce GHG emissions from vessels.
An early output of the HEPS project is an innovative and (international patent pending) concept in propeller design and construction that provides a flexible alternative to traditional mono-bloc propellers and existing bolt on blade designs.
The Clamp on Blade modular propeller has a number of advantages over existing mono-bloc and detachable blade designs explained Mark, including a smaller hub which increases the working area of the propeller, increasing thrust and reducing drag.
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