A motion drag-reducing shell of an unmanned underwater vehicle

Abstract

The motion drag-reducing shell of an unmanned underwater vehicle of the present invention has a simple and light structure, excellent maneuverability, and can exert a good drag-reducing effect in various complicated marine environments; silicone rubber has excellent Cold resistance, heat resistance, aging resistance, good thermal conductivity, and can adapt to various marine working environments; the solution in the shell interlayer comes from external seawater, and there is no need for additional liquid storage containers and additional solutions inside, which saves space and costs ;Seawater has a large specific heat capacity. After heating, it can ensure a stable temperature difference between the surface of the shell and the surrounding seawater for a long time. It is a very cost-effective filling solution; through surface drag reduction, it is not subject to strict size restrictions, and the use of surface drag reduction will not damage navigation. The original design shape of the body can guarantee the hydrodynamic characteristics, so it is applicable to most unmanned underwater vehicles.

Description

technical field [0001] The invention belongs to the technical field of motion drag reduction of underwater vehicles, and in particular relates to a motion drag reduction shell of an unmanned underwater vehicle. Background technique [0002] Since the 1990s, the role of submarines in the underwater battlefield has undergone significant changes, and they are increasingly used in offshore waters to support joint operations. However, for expensive conventional submarines and nuclear submarines, the risk undoubtedly increases. In particular, submarines with large volume and tonnage are simply unable to operate in shallow waters near the sea. Even in offshore activities with a water depth of more than 100 meters, they are easily discovered and attacked by the opponent's anti-submarine forces. At the same time, the Navy needs stealthy unmanned systems to collect intelligence and attack targets in places where traditional sea power cannot reach; and to carry out non-combat naval ac...

AI Technical Summary

Problems solved by technology

However, because supercavitation has extremely strict requirements on the navigation speed, if the lower limit of cavitation cannot be met, it is very easy to lose stability during navigation, and it is difficult to achieve effective and reliable control of it.

Moreover, the supercavitation technology needs to equip the moving body with high-pressure gas storage cylinders, which is even more difficult for unmanned underwater vehicles that already have size and weight restrictions. This approach is very difficult to solve the contradiction. Difficult to work

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