INTERNATIONAL APPLICATION PUBLISHED UNDER TUE PATENT COOPERATION TREATY (PCT)

The Summary of the Study

Technical Field

The invention relates to a telescopic anti-roll system which operates on the principle of the Magnus effect and enables the Magnus force to be controlled and increased.

Prior Art

As it is known, environmental effects (sea and weather conditions) and external forces act on boats and all kinds of floating platform-like floating structures.

External forces can be caused by current, wave, wind force and floating structure movements. Hence, the floating structure is subjected to static and dynamic roll movements. These movements can be periodic or non-periodic. In order for the floating structures exposed to these movements to fulfil their functions in a healthy way, it is important to reduce the roll motion to acceptable levels (angles). There are different systems in the literature and in the market as roll damping systems.

One of them is Magnus-effect roll damping systems that work according to the principle of lifting force generated as a result of rotational movement in the fluid. These systems are mostly cylindrical and driven by an electric motor. Magnus force is a force proportional to the specific gravity of water, cylinder diameter, cylinder length, current velocity coming into the cylinder and angular rotational velocity. In 20 order to dampen the roll motion, these cylindrical structures are rotated at different speeds and the Magnus effect is adjusted.

In the cylindrical roll prevention systems with Magnus effect used in the art, only rotational motion is utilised. The force generated in systems with Magnus effect varies in direct proportion to the square of the cylinder diameter and the length itself. Since there is no function of elongation and shortening of the cylinder length in the previous systems, both the cylinder takes up too much space and the Magnus effect cannot be controlled with elongation.