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Promas Lite - 4 Pages

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Promas Lite

Catalog excerpts

Promas Lite The ultimate propeller/rudder system upgrade for improved efficiency

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Fitting a new propeller or reblading the ­original one The efficient solution Promas Lite is not just a propeller upgrade – rudder performance is optimised as well Promas Lite is a version of the successful ­ Rolls-Royce Promas ­ntegrated propeller i ­ and rudder ­ ystem, designed specifically s ­ for ­ essels already in service. With the v a ­ dvances in propeller design, it is well known that propeller blade ­ hanges, or c the fitting of new propellers, can have a ­ significant effect on propulsive effici­ ­ ency, fuel ­ onsumption and, therefore, c ­ emissions. With Promas Lite these...

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Why is Promas Lite so efficient? Why is Promas Lite so efficient? p ­ reviously wasted energy is recovered Promas Lite integrates the propeller and the rudder into a single system. The addition, the bulb on the ­ udder r Behind a normal propeller hub there also streamlines the flow aft of the is a strong low pressure vortex (hub rudder, further reducing drag. The vortex) that acts on the propeller hub, hubcap is mounted outside of the increasing drag and reducing propeller hub and acts purely as a p ­ ropeller thrust. A special hubcap is h ­ ydrodynamic fairing. No special hub fitted to the...

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Case study DFDS Seaways selects Promas Lite upgrade that gives the best return on investment The selection of Promas Lite by DFDS for the cruise ferry Pearl Seaways that operates on the Copenhagen – Oslo route, came as the result of close cooperation between the DFDS Technical Operations team in Copenhagen and Rolls-Royce. Extensive modeling work was carried out at the Rolls-Royce Hydrodynamic Research Centre in Sweden to refine the design to deliver optimum fuel economy and performance. It resulted in a tailored solution matched to the hull and operating profile of Pearl Seaways. A twin...

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