High-performance hybrid hullform for amphibious aircraft

Abstract

The invention discloses a high-performance hybrid hullform for an amphibious aircraft. The high-performance hybrid hullform comprises a multi-bilge-line hull, two ground-effect wings and two force-bearing buoys, wherein the hull is tapering in front and rear; the ground-effect wings are symmetrically arranged at the two sides of the middle part of the hull, and the force-bearing buoys are fixed at the outer end. A non-step-fault design is adopted at the middle part of the hull, the hull is provided with three bilge lines, an upper hull between the upper bilge line and the middle bilge line and a middle hull between the middle bilge line and the lower bilge line are in the shape of a linear ramp with a bilge turn respectively, the bilge turns are arranged at the outer sides of the transverse sections, and the ramp angles of the upper hull and the middle hull range from 65 degrees to 75 degrees; and the transverse section of a lower hull is in the shape of a curve ramp. According to the high-performance hybrid hullform disclosed by the invention, the motion response of the amphibious aircraft in a wave is reduced through using the hull with the large ramp angle and multiple bilge lines; and meanwhile, an aerodynamic lift is remarkably increased and a water take-off and landing speed is reduced through using the ground-effect wings and a ground-effect lift-enhancing air cavity, and then the motion response of the amphibious aircraft in the wave is reduced and the pitching motion time of the amphibious aircraft during take-off and landing in the wave is reduced, and the anti-wave capacity of the amphibious aircraft is remarkably improved.

Description

technical field [0001] The invention relates to the design field of ground-effect aircraft (wing-in-ground effect ship) and amphibious aircraft, and in particular relates to a high-performance composite ship shape design of an amphibious aircraft. Background technique [0002] The water take-off and landing anti-wave capability of an amphibious aircraft is one of the important symbols that determine the range of amphibious aircraft's use on water. [0003] At present, in order to improve the anti-wave capability of amphibious aircraft for take-off and landing on water, in the aspect of aerodynamic design, lift-increasing devices including mechanical lift-increasing and flap-blowing boundary layer control are used to improve the efficiency of lift-increasing, increase aerodynamic lift, and reduce take-off and landing. Speed, reducing the pitching time of the amphibious aircraft in wave take-off and landing, can improve the anti-wave capability. In terms of hydrodynamic desig...

AI Technical Summary

Problems solved by technology

[0004] The combination of mechanical lift device and optimized conventional hull parameters can increase the lift or reduce the motion response in waves, but the effect of improving the wave resistance capability is limited; Due to the need to add an additional engine to provide air blowing, and the control system of the entire amphibious aircraft is very complicated, it is only suitable for large amphibious aircraft

At present, there is no high-performance composite ship type of amphibious aircraft that has a simple structure and can significantly improve the ability of taking off and landing on the water.

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