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- Duration: 4:50
- Published: 17 Feb 2008
- Uploaded: 20 Jun 2011
- Author: abbmarine
Azipod is the registered brand name of the ABB Group for their azimuth thruster. Originally developed in Finland jointly by Kvaerner Masa-Yards dockyards and ABB, these are marine propulsion units consisting of electrically driven propellers mounted on a steerable pod.
The pod's propeller usually faces forward because in this puller (or tractor) configuration the propeller is more efficient due to operation in undisturbed flow. Because it can rotate around its mount axis, the pod can apply its thrust in any direction. Azimuth thrusters allow ships to be more maneuverable and enable them to travel backward nearly as efficiently as they can travel forward.
The new CRP (Contra Rotating Propellers) Azipod places a counter rotating azipod propeller behind a fixed propeller achieving improved fuel efficiency.
Electric power for the Azipod motor is conducted through slip rings that allow the Azipod to rotate through 360 degrees. Because fixed pitch propellers are used in Azipods, power for an Azipod system is always fed through a variable-frequency drive or cycloconverter that allows speed and direction control of the propulsion motors.
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