HRL Advances Quiet Undersea Propulsion Innovation [Yahoo! Finance]
General Motors Company (GM)
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Source: Yahoo! Finance
system that replaces traditional mechanical moving parts with an electric current and a magnetic field. This work is being performed under Defense Advanced Research Project Agency's (DARPA) " Principles of Undersea Magnetohydrodynamic Pumps (PUMP) " program. HRL's new device uses a recirculating electrochemical hydrogen cell which enables a prototype magnetohydrodynamic (MHD) pump that could be 70% efficient as well as highly reliable – with a lifespan of more than 5 years. Key design benefits: Nearly eliminates gas bubbles – producing 95% fewer bubbles than traditional electrolysis cells – to deliver quiet, gas-free pumping Produces no oxidative or corrosive elements (O or Cl ) which degrade electrode performance over time Magnetohydrodynamic (MHD) pumps: MHD pumps, which generate force from a magnetic field acting on an electric current flowing through seawater, require no rotating mechanical components. This approach significantly reduces noise while simultaneously increa
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