Abstract: A waved-powered UUV. The wave-powered UUV may comprise a nose and body. The nose may comprise a nose buttress plate and guide shaft. The body may comprise a body buttress plate having first and second clearance openings; linear-to-rotary power converter (LRPC) having a splined shaft attached to the nose buttress plate and longitudinally disposed through the first clearance opening; AC generator operably coupled to the LRPC; AC-DC converter electrically coupled to the AC generator; battery module electrically coupled to the AC-DC converter; DC motor electrically coupled to the battery module; propeller operably coupled to the DC motor; and guide shaft tube attached to the second clearance opening for receiving the guide shaft. The nose and body may be in a sliding relationship, and the wave-powered UUV may recharge its battery module when subject to wave energy by moving the nose relative to the body in a reciprocal linear motion.

Abstract: A brine electrolysis system for producing pressurized chlorine and hydrogen gases. In its basic configuration, the brine electrolysis system may comprise: two liquid storage tanks for storing two liquid reactants; a tank having two interior spaces separated by a diaphragm for receiving the liquid reactants; two pumps for regulating the flow of the liquid reactants from the liquid storage tanks to the interior spaces of the tank, two open-bottom cylinders for storing and dispensing two gases; an electrolysis stack assembly for converting the liquid reactants into two gases; and two submersible pumps for pumping each liquid reactant into an electrolysis stack assembly. Each open-bottom cylinder may comprise a float sensor for determining the amount of fluid entering its cylindrical space. The system may further comprise controllers for regulating ionic concentrations within the two interior spaces. Dispense lines and valves may be utilized to release the gases.

Abstract: An in-water refueling system for unmanned undersea vehicles with fuel cell propulsion. The in-water refueling system may store a liquid such as water at constant pressure and may dispense gases such as hydrogen or oxygen for refueling. In its basic configuration, the in-water refueling system may comprise a tank with an interior space for storing the liquid; a pump for regulating the flow of liquid into the interior space of the tank; an electrolysis stack assembly for converting the liquid into one or more gases; and open-bottom cylinders for storing and dispensing the gases. Each open-bottom cylinder may comprise a float sensor for determining the amount of fluids entering its cylindrical space. The in-water refueling system may further comprise a controller for regulating a temperature and a fluid pressure in the tank. Dispense lines and valves may be utilized to release the gases from the tank.