Influence of four modern Flettner rotors, used as wind energy capturing system, on container ship stability

Abstract

This article is presenting the influence on the stability of a container ship, by connecting four modern Flettner rotors, as wind energy capturing system. Modern Flettner rotors, are energy power generators. They are one of the various equipment used to capture and harness wind energy. By reading the article, the reader can discover what are the forces which influence the modern Flettner rotors and how they influence the ship stability.This article major points are: calculation the influence of the modern Flettner rotors on the ship transverse and longitudinal stability, calculation of the ship new displacement, new draft, new metacentric height and period of rolling.

The Effect of Use of Unconventional Power Generation Systems on the Safety of Navigation

“…In this paper is presented a hybrid system. By using a hybrid system formed from two unconventional energy devices large vertical wind turbines and FLETTNER Balloon and a conventional source of energy, ship owners can save a great deal of fuel, thus making substantial savings and not least, reducing pollution, making environmentally friendly ships [2]. Unfortunately, the legislation in force does not allow ships to enter ports with unconventional energy sources.…”

“…The FLETTNER Balloon with helium was two wind stabilizers, at each end of the balloon, with the role of maintaining it in a controlled area (figure 1) [2]. Forces which appear in FLETTNER Balloon (figure 1) with helium: -On vertical axis is the lifting force 𝐹 𝑎 and the weight force𝐺.…”

“…The statically transverse stability is a term used to describe the capacity of a ship to return in the vertical position (initial stability) after being heeled by an external force like wind or wave (figure 7) [2]. GZ -Righting Lever, is the horizontal distance measured in meters between the centre of gravity G and the vertical line where the floatability force action in B point when the ship is heeled by the external force, formed the righting couple or the GZ righting lever (before installation the green generators).…”

“…Wind power is the use of airflow through wind turbines to provide mechanical power, which has the role of rotating some generators and creating electricity [1]. Vertical wind turbine performance depends on ship speed, wind speed, actual wind angle and other aerodynamic parameters [2]. The FLETTNER balloon is a generator of electricity, filled with a gas lighter than air -initially helium that rotates around a horizontal axis and sends electricity using a cable.…”

Wind-Assisted Ship Propulsion: Matching Flettner Rotors with Diesel Engines and Controllable Pitch Propellers

“…The integration aspects onboard a ship are addressed from the stability point of view. In [9], the rotor impact on ship stability is addressed, and the outcome of the study shows a moderate or insignificant impact. Ref.…”