KR-20260064162-A - SHAPE MIMETIC-BASED NON-POWERED DROP DEVICE

Abstract

The present invention relates to a shape-simulating non-powered drop device, comprising: a wing section designed to have aerodynamic characteristics by including first and second wing sections combined in a left-right symmetric streamlined structure with respect to a pointed point, and forming a shape that is vertically asymmetrically curved with respect to a center spaced a specific distance from the pointed point; and a tip section combined between the first and second wing sections, bent and protruding in the direction opposite to the pointed point, and becoming narrower in width as it goes in the direction opposite to the pointed point.

Inventors

• 임현우
• 김문수
• 김응삼

Assignees

• 전남대학교산학협력단

Dates

Publication Date

20260507

Application Date

20241031

Claims (7)

1. A wing portion designed to have aerodynamic characteristics by including first and second wing segments combined in a left-right symmetric streamlined structure with respect to a cusp, and forming a vertically asymmetric curved shape with respect to a center spaced a specific distance from the cusp; and A shape mimetic-based non-powered drop device comprising a tip that is joined between the first and second wing sections, is bent and protrudes in the opposite upward direction of the tip, and becomes narrower in width as it goes in the opposite upward direction.
2. In paragraph 1, the wing portion A shape simulation-based non-powered drop device characterized by having the deepest recessed structure at the center spaced apart by the above-mentioned specific distance.
3. In paragraph 2, the wing portion A shape simulation-based non-powered drop device characterized by forming a center of gravity in an upward direction from a center spaced apart by the above-mentioned specific distance.
4. In paragraph 1, the wing portion A shape-simulation-based non-powered drop device characterized by being divided into three parts—an upper part, a middle part, and a lower part—and the upper, middle, and lower parts being joined by a central tube, wherein the middle part includes a center of gravity and is pivotally connected through a vertical tube.
5. In paragraph 1, the wing portion A shape-simulation-based non-powered drop device characterized by the above-mentioned point and the above-mentioned attachment being positioned to penetrate the center of the annular ring and coupled to a crossbar traversing the center symmetry points of the annular ring, so as to rotate together with the rotation of the annular ring.
6. In paragraph 1, the wing portion A shape-simulation-based non-powered drop device characterized by forming a tube by injecting air into the interior, arranging the attachment as a saddle, and attaching a belt to each of the first and second wing sections.
7. In paragraph 1, the wing portion A shape-mimicking-based non-powered drop device characterized by supporting a stable drop by inserting a stabilization structure capable of holding a specific object near the above attachment.

Description

Shape Mimetic-Based Non-Powered Drop Device The present invention relates to a non-powered drop device, and more specifically, to a shape-mimetic-based non-powered drop device capable of reducing the falling speed of an object and maintaining a stable flight path by mimicking the symmetrical wing structure of the tulip tree. Modern parachute devices primarily utilize blade-shaped propellers or wing structures to overcome air resistance and ensure flight stability. However, these traditional structures require a power supply and present various challenges regarding orbit maintenance. For instance, propeller-type devices consume significant power for rotation, resulting in low energy efficiency and increased complexity and maintenance costs. In addition, simple drop devices that do not use power may experience problems with irregular movement in the air or deviation from their trajectory. Accordingly, innovative technology is needed that can stably maintain an orbit and reduce the falling speed even without power. Meanwhile, the natural world is home to countless species that have evolved over millions of years, developing effective diffusion mechanisms for reproduction. The complex and sophisticated mechanisms found in nature can provide significant inspiration for the design of various artificially engineered mechanical devices, particularly drop mechanisms and stabilization systems. By applying natural design principles, it is possible to develop more efficient and stable drop mechanisms. Figure 1 is a diagram showing a samara (seed) of the tulip tree ( Liriodendron tulipifera ). FIG. 2 is a drawing illustrating a shape simulation-based non-powered drop device according to an embodiment of the present invention. Figure 3 is a drawing showing the shape of the wing portion of Figure 2 from various angles. Figure 4 is a drawing explaining the structure of the wing portion of Figure 2. Figure 5 is a diagram illustrating the rotational structure of the wing portion of Figure 2. Figure 6 is a drawing showing a modified embodiment of the wing portion of Figure 2. FIG. 7 is a drawing showing another modified embodiment of the wing portion of FIG. 2. Figures 8a-8b are diagrams illustrating the experiment and results of analyzing the fall trajectory of a tulip tree fruit shape simulation. The description of the present invention is merely an example for structural or functional explanation, and therefore the scope of the present invention should not be interpreted as being limited by the examples described in the text. That is, since the examples are subject to various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the objectives or effects presented in the present invention do not imply that a specific example must include all of them or only such effects; therefore, the scope of the present invention should not be understood as being limited by them. Meanwhile, the meaning of the terms described in this application should be understood as follows. Terms such as "first," "second," etc., are intended to distinguish one component from another, and the scope of rights shall not be limited by these terms. For example, the first component may be named the second component, and similarly, the second component may be named the first component. When it is stated that one component is "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may be other components in between. Conversely, when it is stated that one component is "directly connected" to another component, it should be understood that there are no other components in between. Meanwhile, other expressions describing the relationships between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," should be interpreted in the same way. A singular expression should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as "include" or "have" are intended to specify the existence of the implemented features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood not to preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof. In each step, identifiers (e.g., a, b, c, etc.) are used for convenience of explanation and do not describe the order of the steps; the steps may occur differently from the specified order unless a specific order is clearly indicated in the context. That is, the steps may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order. Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this inven