Influence of Flettner balloon, used as wind energy capturing system, on container ship stability

Vasilescu, Mihail-Vlad; Dinu, Dumitru

doi:10.1051/e3sconf/202018002004

Cited by 4 publications

(10 citation statements)

References 2 publications

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“…That's why it chose the FLETTNER balloon to be filled with helium. The latter being lighter than air, giving the balloon buoyancy in the air and due to its inert gas properties, it cannot explode if the gas in the balloon mixes with the air, if gas from the balloon is lost [3]. In order to present the hybrid propulsion system of the ship, calculations must be made for the forces appearing on the propulsion elements, respectively on the FLETTNER balloon and on the wind turbine, the traction forces of the ship, as well as calculations of the influence of the system on the manoeuvrability and stability of the ship.…”

Section: Methodsmentioning

confidence: 99%

“…The force and direction of the wind experienced by the ship as it moves forward will be the result of induced wind (airflow felt due to the ship's forward motion) and true wind (wind direction when the ship is stationary) to create apparent wind (figure 3) [3]. Apparent wind is used to calculate the speed ratio.…”

Section: The Influence Of Large Vertical Wind Turbines Installed On T...mentioning

confidence: 99%

“…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). G′Z′ -Righting Lever, after instalation of green generators (figure 8) [3]. where: KN = x + y (15) Table 2.…”

Section: Calculation Of 𝐆𝐙 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 For the Drawing Of Transversal Sta...mentioning

confidence: 99%

“…where: KN = x + y (15) Table 2. G `Z`c alculated for different angles of heel θ from 0 0 to 90 0 after installation of green generators [3]. The graph contents the ship static stability curve and the variation of right lever, which depended of the influence of the variation angle of heel, where: Oorigin of the curve; M, M `maximum of the curve, critical angle of rolling or maximum angle of heel (the point where the right lever has the maximum value); V-point of decrease; ascendant branchbetween O and M ; O and M `; descendent branchbetween M and V ; M `and V `;  v -maximum angle of heel, at which the ship comes back to the initial position;  m -the angle of heel at which the openings from the ship body, superstructure, cannot be close tight and are drowning.…”

Section: Calculation Of 𝐆𝐙 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 For the Drawing Of Transversal Sta...mentioning

confidence: 99%

“…The FLETTNER balloon is a device that generates electricity at high altitude. It rotates around a horizontal axis in response to wind, efficiently generating clean, renewable electricity at a lower cost than all competing systems [3]. Due to the high altitudes at which the FLETTNER rotor rises, the power generated by it is at least double the power generated by a classic wind turbine.…”

Section: Introductionmentioning

confidence: 99%

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

Vasilescu¹,

Panaitescu²,

Scupi³

et al. 2022

IJMMT

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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. Unfortunately, the legislation in force does not allow ships to enter ports with unconventional energy sources. For this reason, unconventional energy sources will be used only during transoceanic crossings or during longer journeys. In this article major points are: 1) the influence of the FLETTNER helium Balloon on the manoeuvrability and road stability of the ship; 2) the influence of large Vertical wind turbines installed on the deck of the container ship on the manoeuvrability and road stability of the ship; 3) the calculation of the stability of the ship with the FLETTNER Balloon with helium coupled and with the 4 Vertical wind turbines installed on the ship's deck; 4) modelling the phenomena regarding the comparative analysis of the forces in the FLETTNER Balloon and in the large Vertical wind turbines. As results were obtained: 1) velocity and pressure distributions, forces and kinetic energies for the FLETTNER Balloon in various weather conditions, with winds of 10 and 20 m / s respectively from different directions: 00, 300, 600, 900 in various planes; 2) the distributions of speeds and pressures, forces and kinetic energies studied individually for each of the four large vertical wind turbines at winds of 10 m/s and 20 m/s respectively in various planes, segregated according to the position of port bow, starboard and stern port, starboard. This development was due to the growing demands to solve various problems at the industrial level, coming to the aid of many engineers who wanted an improvement in the equipment used, but did not have the financial support to perform experiments.

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Section: Methodsmentioning

confidence: 99%

Section: The Influence Of Large Vertical Wind Turbines Installed On T...mentioning

confidence: 99%

Section: Calculation Of 𝐆𝐙 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 For the Drawing Of Transversal Sta...mentioning

confidence: 99%

Section: Calculation Of 𝐆𝐙 𝐢𝐧𝐢𝐭𝐢𝐚𝐥 For the Drawing Of Transversal Sta...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Vasilescu¹,

Panaitescu²,

Scupi³

et al. 2022

IJMMT

Self Cite

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Development of a Deformable Water-Mobile Robot

et al. 2023

Actuators

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This article proposes a deformable water-mobile robot that can be used for rescue work. The robot body adopts an open-motion chain structure with two degrees of freedom, including two drive modules and one main control module. The three modules are connected through deformation joints, and each drive module is equipped with an underwater thruster. The robot can obtain a triangle, linear shape, curved shape, and U-shape through deformation and have three types of motion: linear shape motion, U-shaped motion, and curved shape motion. In the linear shape, a multi-island genetic algorithm was used to optimize the structural parameters with the minimum resistance and the maximum volume. Floating state analysis was conducted in the U-shape, and the structural parameters were reasonably designed. By experimenting with the robot prototype on water, the robot can achieve oscillating, linear, U-shaped, and horizontal rotary motion, has an automatic adjustment function, and effective buoyancy meets the required requirements.

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Research on Choosing the Best Gas for the Flettner Balloon, an Unconventional Power Generator Energy Device

Vasilescu¹,

Epikhin

2023

Operation of Maritime Transport

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In the last 30 years, the degree of pollution has been continuously increasing and the chemical structure of the atmosphere has changed due to large amounts of polluting emissions such as N0X, S0X, C02 and other particles resulting from combustion, which lead to the destruction of the ozone layer, climate change, greenhouse effect or acid rain. Because the price of oil is continuously increasing, the atmosphere is degrading due to emissions of exhaust gases and the general degree o f pollution of the Earth is increasing day by day, various solutions for the generation of non-conventional energies have begun to arouse the interest of parties involved in maritime transport. Non-conventional propulsion systems, which use wind energy or solar energy, are currently making a comeback after being ignored for a long time. By using an unconventional power generator energy devices, like Flettner Balloon, ship owners can save a great amount of fuel, thus making substantial savings and not least, reducing pollution, making environmentally friendly ships. In this article you can discover six major points, which are: 1) Flettner Balloon description, 2) Flettner Balloon components, 3) Determination of the gas with which to fill the Flettner Balloon, 4) The principle of operation for the Flattner Balloon, 5) Energy balance, 6) Conclusions.

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Influence of Flettner balloon, used as wind energy capturing system, on container ship stability

Cited by 4 publications

References 2 publications

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

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

Development of a Deformable Water-Mobile Robot

Research on Choosing the Best Gas for the Flettner Balloon, an Unconventional Power Generator Energy Device

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