By using two propellers that rotate in opposite directions, a ship can use less energy to move forward. New knowledge means ...

The Pentagon’s advanced science division is taking a new look at a technology that promises to revolutionize how warships travel and fight in the world’s oceans. The Defense Advanced Research Projects ...

Mechanisms such as wheels and propellers are usually used for propulsion engines that move vehicles, and in the case of ships, screw propellers and jet injection structures are used. However, the ...

Engineers and scientists in China have started up the first Chinese ship with a permanent magnet motor system. The system promises to make quieter submarines that are much harder to detect, a major ...

HRL Laboratories, LLC has demonstrated proof-of-concept on a unique approach to achieve a silent pumping system that replaces traditional mechanical moving parts with an electric current and a ...

A mysterious silent propulsion system reminiscent of author Tom Clancy’s fictional submarine “Red October” went to sea in real life Tuesday – not at a Russian naval base but in Japan’s most advanced ...