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Ship propulsion system Promas
rudder/propeller

ship propulsion system
ship propulsion system
ship propulsion system
ship propulsion system
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Characteristics

Application domain
for ships
Other characteristics
rudder/propeller

Description

Promas integrates the propeller and the rudder into a single system to optimise hydrodynamic efficiency. A special hubcap is fitted to the propeller which streamlines the flow onto a bulb that is added to the rudder, effectively reducing flow separation immediately after the propeller. The result is an increase in propeller thrust as previously wasted energy is recovered from the flow. The addition of the bulb on the rudder also streamlines the flow aft of the rudder, further reducing drag. A twisted rudder provides further improvements in efficiency and manoeuvrability. In general the efficiency gain is between 3-8% for single screw vessels and 2-6% for twin screw vessels. Virtually any vessel will benefit. The position of the rudder in the slipstream and the skeg design can deliver further improvements. Key Features Reduced fuel consumption Reduced environmental impact Short payback period Increased propulsive efficiency Simple installation Improved manoeuvrability

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.