WIG craft having hybrid propulsion means

Abstract

a WIG craft having hybrid propulsion means comprises a streamlined WIG craft body, a main wing mounted on opposite sides of the WIG craft body, a pylon mounted on the WIG craft body or the main wing, a primary thruster unit mounted on the pylon, and an auxiliary thruster unit mounted on the primary thruster unit and serving as a booster used when the WIG craft takes off from the surface of the water. Thus, the WIG craft is provided with the auxiliary thruster unit in addition to the primary thruster unit, providing the effect of efficiently utilizing thrust upon the WIG craft taking off from the surface of the water.

Description

technical field [0001] The present invention relates to a wing-in-ground effect ship, in particular to a wing-in-ground effect ship equipped with a composite propeller including a main propeller and an auxiliary propeller. Background technique [0002] Wing-in-ground ship is a ship that utilizes the ground effect (Ground effect) that the drag is reduced and the lift is increased when the wing is close to the water surface. However, such ground effect is a phenomenon that only occurs when the speed increases to a certain level, and from the time when the wing-in-ground effect ship stops to leave the water surface, under the same speed condition, a greater thrust is required due to the resistance of the water. [0003] Therefore, Russia, which was the first to develop a wing-in-ground boat, installed a separate propeller in the bow to increase the thrust used to overcome the resistance of the water, and, at low speeds, formed a fast air flow under the wings, thereby Floats th...

AI Technical Summary

Problems solved by technology

However, it has become difficult to obtain the required horsepower for turboprop propellers, as most of the medium and large aircraft have recently adopted turbofan propellers or turbojet propellers

[0006] In particular, in the case of propeller propellers, the size of the propeller becomes larger as the required horsepower increases, but the size of the propeller that can be manufactured is limited due to issues such as materials and rotational speed

Therefore, in order to manufacture a large-scale wing-in-ground craft, it is necessary to use multiple propellers to share the thrust required when leaving the water. At this time, if these propellers all adopt turboprop propellers, it will lead to problems in terms of installation space. The problem

[0007] In contrast, since turbofan propellers or turbojet propellers are designed to ensure maximum efficiency at high speeds, their efficiency will be reduced in low to medium speed operations such as WIG craft

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