Water surface grazing ultralow altitude aircraft

Abstract

The invention relates to a water surface grazing ultralow altitude aircraft, which comprises an aircraft body, a propeller, a driving device, a water pump, water outlet pipes, a water soaking hydrofoil, and a water suction pipe. The water soaking hydrofoil is arranged on the lower part of the aircraft body and is always underneath the water surface; the water suction pipe, the driving device and the water pump are arranged in the water soaking hydrofoil; one end of the suction pipe stretches out of the water soaking hydrofoil from the surface, which is far from the aircraft body, of the water soaking hydrofoil, the other end is connected to the water inlet of the water pump; the water outlet of the water pump is connected to one end of two water outlet pipes; the bodies of water outlet pipes are in the aircraft body, the other ends symmetrically stretch out the aircraft body, the pipe openings are both downward; and the driving device is used to change the direction of the water soaking hydrofoil. The flying efficiency, flying stability, and flying maneuverability of the aircraft are all improved. Compared with the conventional ground effect aircraft, the influence of sea conditions is largely reduced, the adaptability of the aircraft is stronger, and the movement becomes more stable.

Description

technical field [0001] The invention belongs to the field of aircraft design, and in particular relates to a design method for an ultra-low-altitude aircraft skimming water. This design uses ground effect, water jet vector and hydrofoil joint control technology in the force system balance and maneuverability design of the water-skimming aircraft, and finds a new way to find innovative designs that overcome some technical bottlenecks of traditional ground-effect aircraft. Background technique [0002] At present, there are mainly the following types of ground-effect aircraft: seaplanes, ground-effect aircraft, wing-in-ground boats, and wing-in-ground boats. [0003] In the existing open technical literature "the development status and military application research of ground-effect aircraft" (Aviation Science and Technology, the first issue in 2006), it is stated that ground-effect aircraft is a new type of vehicle that utilizes the principle of ground effect to fly. Taking R...

AI Technical Summary

Problems solved by technology

Taking the design characteristics of the Russian ground-effect aircraft with leading technology as an example, in order to eliminate the impact of waves on the ground and improve flight safety, a large-area stabilizer wing installed on the top of the tall vertical tail is designed, and this structure makes side-slip interference more effective. It may cause the top structure of the wing to touch the water and become a fatal safety problem; another example is to improve the ground effect and reduce the chance of the wing touching the water, adopt a small wingspan wide chord ratio wing design, coupled with a high-mounted large-area stable horizontal tail And other structural designs have increased the weight and flight resistance of the aircraft to varying degrees, making its flight efficiency and economy worse.

[0005] However, since there are still many technical barriers in ground-effect aircraft that have not yet been broken through, its application and promotion are still far from people's expectations.

These technical obstacles are mainly reflected in the fact that the design theory of ground-effect aircraft is still immature, and breakthroughs are still to be made in key technologies such as overall aerodynamic layout, power increase, hydrodynamic layout design, and maneuverability of ground-effect aircraft; There are also key technical problems such as weight increase, difficulty in using ground effect, and limitation of aerodynamic layout, which have not been effectively overcome [2], resulting in poor economic efficiency of ground effect aircraft, and it is difficult to be widely popularized and applied

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