Azimuth thruster COMBINED

tunnel typefor shipsretractable

Direct power transmission using a vertical top-mounted electric motor eliminates the need for special shaft and quick-release coupling arrangements when the thruster is lowered into and retracted from the working position. This solution also eliminates the need for gearboxes to connect the prime mover to the thruster – resulting in better total efficiency. Design Principle with valuable customer features The Brunvoll combined Retractable Azimuth / Tunnel Thruster is a retractable Azimuth Thruster that also can be used as a conventional tunnel thruster. It provides unique opportunities for innovative and flexible use of thruster functionality. Shaped like a long column, installed vertically in the thruster compartment Lowered into operating position and retracted into the hull by means of hydraulically operated lifting equipment When Thruster is retracted, it is mechanically locked by means of spring loaded locking devices and the hull opening will be closed by a flush-plate attached to the bottom of the propeller nozzle Delivered with azimuth arrangement as well as retracting arrangement and guiding column in pre-assembled condition fitted on the tank top/sea chest integration plate This arrangement will allow for easy installation/integration of the complete Thruster Unit When in lowered operating position the thruster unit is "locked" and pre-loaded in this position by means of the hydraulic lifting/lowering actuators When the thruster is in operating position but not turning, the azimuth movement is locked by mechanical brakes