Delivery of first permanent magnet tunnel thruster

The TT-PM is currently being fitted into the hull of the “Olympic Octopus”

The new thruster design concept comprises a permanent magnet motor in a rim, which drives the propeller in the centre. The permanent magnet motor consists of a stator that carries a number of electrical coil windings, and a rotor fitted with a number of very strong permanent magnets. A rotating magnetic field is created by the stator that interacts with the fields of the permanent magnets on the rotor, generating force to drive the rotor around, providing the mechanical power.

Rolls-Royce, the global power systems company, has delivered the first of its newly developed permanent magnet tunnel thruster (TT-PM) to Norwegian company Olympic Shipping, who will operate the thruster on its vessel “Olympic Octopus”.

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