According to an example aspect of the present invention, there is provided a marine propulsion system (1) comprising a first portion (4) and a second portion (5) of a set of movable foils, a movement mechanism (2) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to simultaneously control a motion of the first portion (4) and the second portion (5) of the set of foils along a closed first trajectory (6) comprising a first direction (17) and a second direction (18) which is different than the first direction (17), and a pitch mechanism (3) coupled to the first portion (4) and the second portion (5) of the set of movable foils and configured to control a pitch angle (π) of the first portion (4) and the second portion (5) of the set of movable foils, and wherein the pitch angle (π) of at least a part of the second portion (5) of the set of foils is dependent on an incoming fluid flow (vx), the motion of the second portion (5) of the set of foils, and a flow (vind) induced by at least a part of the first portion (4) of the set of foils.
Energy transforming device and method of transforming energy
2020-02-20
Patent
Electronic Resource
English
ENERGY TRANSFORMING DEVICE AND METHOD OF TRANSFORMING ENERGY
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