Deep-sea submersible reflects the comprehensive technical strength of a country and is the forefront and commanding point of Marine technology development.
The deep-sea buoyancy material used in the deep-sea submersible can make it have the ability of stable suspension positioning for the operation target, and realize the non-powered diving and floating completely depending on its own mass.
Due to the different depths of use of manned and unmanned submersibles, their structures are also very different. Most of the power and control devices of the shallow submersible with a depth of less than 1000m are placed in the pressure vessel of the submersible and can float freely without the use of special buoyancy materials. However, if the depth of the submersible is further increased, the thickness of the pressure vessel must be increased, and the mass of the vessel will also be increased. Without buoyancy materials, the submersible will not be able to float. Buoyancy materials provide positive buoyancy for submersible and partly form the streamline shape of submersible. In particular, for unwired underwater robot, buoyancy materials can be used to form a streamlined body, and some buoyancy materials can be used as filling materials for stabilizer wings and installation bases for internal equipment. All these can provide buoyancy for underwater carrier system and reduce energy consumption. At the same time, a certain volume of buoyancy material can be added to adjust the buoyancy and trim and roll according to the mass changes produced by the loading equipment of the underwater robot.From Solid Buoyant Materials