KR-20260063791-A - Airboat with improved straightness and turnability

Abstract

The present invention relates to an airboat in which the straightness of the hull is significantly improved during operation and the turning ability of the hull is excellent during rotation. That is, the present invention is characterized by an airboat with improved straightness and turning ability, wherein the bottom surface of the hull is formed with a forward inclined surface and a flat surface in the longitudinal direction, and an air propulsion unit is installed at the rear of the hull, wherein a first skid section is installed from the part where the forward inclined surface of the hull begins to a part of the flat surface, and a slalom section without a skid is formed on the rear flat surface at the part where the first skid section ends, and a second skid section is installed at the lower rear of the hull and moved up and down by a cylinder.

Inventors

• 김정열
• 오운기
• 김영환
• 정종석

Assignees

• ㈜은성중공업

Dates

Publication Date

20260507

Application Date

20241031

Claims (5)

1. The bottom surface of the hull (10) is formed with a forward inclined surface (12) and a flat surface (14) in the longitudinal direction, and the air propulsion unit (20) is installed at the rear of the hull (10). A first skid section (30) is installed from the part where the forward slope (12) of the hull (10) begins to a part of the flat surface (14), and At the end of the first skid section (30), the rear plane (14) forms a slalom section (40) without skids, and An airboat with improved straightness and turning ability, characterized by having a second skid section (50) installed at the lower rear of the hull (10) and moved up and down by a cylinder (54).
2. In Article 1, An airboat with improved straightness and turning ability, characterized in that the first skid section (30) is installed within 1/2 of the plane (14) at the point where the forward slope (12) of the hull (10) begins.
3. In Article 1, The above first skid section (30) is characterized by having skids (32) installed at regular intervals on both sides of the longitudinal bottom surface of the hull (10) so as to correspond to each other, thereby improving straightness and turning ability of the airboat.
4. In Article 1, The above second skid section (50) is characterized by a cylinder (54) installed vertically above the rear central part of the hull (10), an auxiliary skid (52) connected to the piston rod (56) of the cylinder (54) and moved up and down directly below the cylinder (54), and the auxiliary skid (52) is installed spaced apart from the side wall surface of the rear lower part of the hull (10), thereby improving straightness and turning ability of the airboat.
5. In Paragraph 4, An airboat with improved straightness and turning ability, characterized in that the auxiliary skid (52) is positioned on the same horizontal line as the skid (32) of the first skid section (30) when descending, and when the auxiliary skid (52) is positioned on the same horizontal line as the slalom section (40) or at a higher position than the slalom section (40) when ascending.

Description

Airboat with improved straightness and turnability The present invention relates to an airboat with easy straight-line movement and turning ability, and more specifically, to an airboat in which the straight-line movement of the hull is greatly improved during operation and the turning ability of the hull is excellent during rotation. Generally, airboats generate thrust using aircraft propellers on the hull, rather than the underwater screws used on ships. In addition, since the hull is constructed to be flat, it can be operated not only in very shallow waters but also on wetlands, mudflats, ice, snow, and even on land roads. Thus, it is a specialized vessel that is widely used in the swamps of Florida in the United States and on frozen lakes and heavy snow regions in Russia. These airboats were commercialized by removing the underwater screw engine from existing small boats and equipping them with a small airplane engine and a fixed-pitch propeller. By utilizing the thrust generated by the airplane propeller, the airboat acquired the special capability of being amphibious. However, the conventional technology described above had the following problems. Conventional airboats have a problem in that their hulls are manufactured with flat bottoms, causing the hull to slip outward or in the direction of the wind when changing direction or turning or encountering strong winds from the side while operating on mudflats, making it difficult to control the hull and preventing even skilled operators from operating it easily. In addition, conventional airboats had a problem in that, due to their flat bottom, they were sensitive to changes in direction on the water surface depending on the air propulsion, and the straightness of the hull was reduced, making control inconvenient. In light of this, the airboat having a planing section disclosed in prior art Patent No. 10-2146797 was designed to improve straight-line stability by providing a planing section on the hull, but there was a problem in that rotational resistance was generated by the planing section during turning to rotate the airboat, thereby hindering the turning action of the airboat. FIG. 1 is a bottom view showing the configuration of an airboat with improved straightness and turning ability according to the present invention. FIG. 2 is a side view showing the state in which the auxiliary skid of the second skid section is lowered during operation of an airboat with improved straightness and turning ability according to the present invention. FIG. 3 is an enlarged view showing the configuration of the second skid section of FIG. 2. FIG. 4 is an example diagram of a rear section showing the state in which the auxiliary skid of the second skid section is lowered during operation of an airboat with improved straightness and turning ability according to the present invention. FIG. 5 is an enlarged view showing the configuration of the second skid section of FIG. 4. FIG. 6 is a side view showing the state in which the auxiliary skid of the second skid section is raised during rotation of an airboat with improved straightness and turning ability according to the present invention. FIG. 7 is an enlarged view showing the configuration of the second skid section of FIG. 6. FIG. 8 is an exemplary diagram of the rear section showing the state in which the auxiliary skid of the second skid section is raised during rotation of an airboat with improved straightness and turning ability according to the present invention. FIG. 9 is an enlarged view showing the configuration of the second skid section of FIG. 8. Preferred embodiments of the present invention are described in detail below. In describing the present invention, specific descriptions of related known functions or configurations are omitted if it is determined that such detailed descriptions may unnecessarily obscure the essence of the invention. The airboat of the present invention is configured to include a hull (10), an air propulsion unit (20) installed at the rear of the hull (10) to generate propulsion force, a first skid unit (30) and a slalom unit (40) on the bottom surface of the hull (10), and a second skid unit (50) at the rear lower part of the hull (10). The above-mentioned hull (10) is configured to be floatable on the water surface and equipped with a space for a driver and passengers to board and for cargo to be loaded, such as an airboat, and the above-mentioned air propulsion unit (20) may be configured with a conventional structure such as a propeller rotated by an engine or a similar structure, so a detailed description is omitted. In addition, the bottom surface of the hull (10) is formed as a flat surface (14) and is structured to slide in contact with the upper surface of the water or mudflats, and the front side is formed as an inclined surface (12) to reduce resistance and minimize the influence of waves when the airboat is propelled, and is structured in a conventional manner. A first