Hydrocarbon fueled UUV power systems

Two hydrocarbon fueled internal combustion unmanned undersea vehicles (UUV) power sources incorporating a high-speed turbo-alternator are described, and their performance variation with operating depth and total energy is discussed. Turbine performance data is also discussed. These systems require only the refilling of tanks without disassembly between runs. They have overall system specific energies 3 to 4 times that of silver-zinc batteries.