KR-20260064228-A - Wing sail structure for improving lift

KR20260064228AKR 20260064228 AKR20260064228 AKR 20260064228AKR-20260064228-A

Abstract

A wing sail structure for enhancing lift is disclosed. The wing sail structure includes a sail unit comprising a main wing sail, a first sub-wing sail, and a second sub-wing sail; and a main rotation drive unit that supports the sail unit from below and rotates the sail unit horizontally in a forward or reverse direction under the control of a controller, wherein the first sub-wing sail and the second sub-wing sail are spaced apart on both sides of the main wing sail with the main wing sail in between.

Inventors

김기범
김민일

Assignees

삼성중공업 주식회사

Dates

Publication Date: 20260507
Application Date: 20241031

Claims (8)

A sail unit comprising a main wing sail, a first sub-wing sail, and a second sub-wing sail; and It includes a main rotation drive unit that supports the sail unit from below and horizontally rotates the sail unit in a forward or reverse direction under the control of a controller, A wing sail structure in which the first sub-wing sail and the second sub-wing sail are spaced apart on both sides of the main wing sail, with the main wing sail in between.
In paragraph 1, A wing sail structure in which, in the longitudinal direction of the main wing sail, the first sub-wing sail and the second sub-wing sail are positioned behind the maximum thickness area in the horizontal cross-sectional shape of the main wing sail, and when viewed from the side, the first and second sub-wing sails are positioned to overlap the main wing sail by a predetermined width length.
In paragraph 1, The above-mentioned sail unit is, The main wing sail fixedly supported on the main wing support shaft and in an upright position; The first sub-wing sail, which is fixedly supported on the first sub-wing support shaft and in an upright position; The second sub-wing sail, which is fixedly supported on the second sub-wing support shaft and in an upright position; A base coupled together to the main wing support shaft, the first sub-wing support shaft, and the second sub-wing support shaft to support the main wing sail, the first sub-wing sail, and the second sub-wing sail from below; and It includes a cap coupled together to the upper portions of the main wing support shaft, the first sub-wing support shaft, and the second sub-wing support shaft, wherein A wing sail structure in which the main rotary drive unit is positioned on the upper part of the base or the lower part of the cap to rotate the sail unit as a whole under the control of the controller.
In paragraph 3, A first sub-rotation drive unit connected to the first sub-wing support shaft to rotate the first sub-wing sail with the first sub-wing support shaft as the rotation center; and It further includes a second sub-rotation drive unit connected to the second sub-wing support shaft to rotate the second sub-wing sail with the second sub-wing support shaft as the center of rotation, A wing sail structure, wherein each of the first sub-rotation drive unit and the second sub-rotation drive unit is positioned on the upper part of the base or the lower part of the cap and is driven by the control of the controller to rotate the first sub-wing support shaft or the second sub-wing support shaft connected in a corresponding manner.
In paragraph 4, A wing sail structure, wherein the controller controls the operation of the main rotation drive unit to rotate the sail unit until the main wing sail is in an attitude having a preset angle of attack (AoA) by referring to sensing information generated from a wind direction/wind speed sensor, and then controls the operation of one or more of the first sub-rotation drive unit and the second sub-rotation drive unit to rotate one or more of the first sub-wing sail and the second sub-wing sail at a preset rotation angle corresponding to the angle of attack of the main wing sail.
In paragraph 4, A wing sail structure wherein the first sub-wing sail and the second sub-wing sail are spaced apart from the main wing sail by a distance such that they do not interfere with the main wing sail when rotated.
In paragraph 1, A wing sail structure in which the first sub-wing sail and the second sub-wing sail are formed with a size relatively smaller than that of the main wing sail.
In paragraph 1, A wing sail structure wherein each of the main wing sail, the first sub-wing sail, and the second sub-wing sail has a shape among a symmetrical wing shape, a semicircular shape, a semi-elliptical shape, and an asymmetrical shape having a camber.

Description

Wing sail structure for improving lift The present invention relates to a wing sail structure for improving lift. Ships operating at sea rely heavily on fossil fuels, to the extent that the shipping industry's annual carbon emissions are estimated to exceed 1 billion tons. Accordingly, the International Maritime Organization (IMO) has set a goal to reduce greenhouse gas emissions by at least 20% by 2030 and at least 70% by 2040, and has declared the realization of carbon neutrality in the shipping industry by 2050. In order to respond to stricter marine environmental regulations and reduce the use of fossil fuels, the shipping industry is attempting to improve the propulsion of ships by using wind power by equipping them with wind-assisted devices such as wing sails and rotor sails. When wind is applied to a wing sail, which is manufactured in the shape of an airfoil and mounted on a ship, thrust is generated in the direction of hull propulsion and a side force is generated in the direction of the hull's side that hinders the maintenance of the course. At this time, in order to generate maximum thrust, the wing sail is rotated to have an appropriate angle of attack (AoA). Currently, the cross-sectional shape of wing sails is being modified in various ways to attempt to increase the efficiency of wing sails. However, there is a limitation in that modifying the cross-sectional shape of wing sails alone does not improve the thrust enhancement effect of ships using wind to a satisfactory level. The matters described in the technical background section of this invention are for the purpose of understanding the background of the invention and cannot be concluded as prior art already known to a person with ordinary knowledge in the field to which this technology belongs. FIG. 1 is a drawing illustrating a ship equipped with a wing sail structure according to the prior art. FIG. 2 is a diagram showing the concept of thrust, side force, and lift generation of a wing sail. FIG. 3 is a drawing illustrating a wing sail structure according to an embodiment of the present invention. FIG. 4 is a drawing for explaining the operation of a wing sail structure according to an embodiment of the present invention. FIG. 5 is a diagram comparing the airflow state of a wing sail structure according to one embodiment of the present invention and a conventional wing sail structure. FIG. 6 is a graph comparing the thrust generation efficiency of a wing sail structure according to an embodiment of the present invention and a conventional wing sail structure. FIG. 7 is a drawing illustrating a wing sail structure according to another embodiment of the present invention. FIG. 8 is a drawing for explaining the operation of a wing sail body according to another embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Embodiments of the present invention will be described below with reference to the accompanying drawings. In the accompanying drawings, identical components are given the same reference numerals, and in the description of the embodiments, identical or corresponding components may be briefly described or redundant descriptions may be omitted. In the drawings, each component may be depicted in an exaggerated size for convenience of explanation and understanding, and it is obvious that the present invention is not limited to the size and proportion of the components depicted in the drawings. FIG. 1 is a drawing illustrating a ship equipped with a wing sail structure according to the prior art, and FIG. 2 is a drawing showing the concept of generating thrust, side force, and lift of the wing sail. As illustrated in FIG. 1, a ship (10) is equipped with a plurality of wing sail structures (20) as wind power assist devices. A wing sail structure (20) may include a wing sail (22) and a rotating support (24) that supports and rotates the wing sail (22). In order to increase the thrust of the ship (10) by using the wind blowing from the side, the rotating support (24) is driven to rotate the wing sail (22) in the appropriate direction according to the control of the controller. When the wing sail (22) rotates in response to wind blowing from the side of the vessel (10), as shown in FIG. 2, thrust is applied to the wing sail (22) in the direction of travel of the vessel (10), and a side force, which is a factor hindering the maintenance of the course, is applied in the lateral direction of the vessel (10). Generally, in order to maximize thrust on the vessel (10), the controller controls the rotation of the wing sail (22)