Naval Research Laboratory Archives – The Green Optimistic green tech news, since 2008 Thu, 07 Jun 2012 15:46:54 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 2667534 Underwater Solar Cells Invented at NRL Yield 7 Watts/Sq.Meter https://www.greenoptimistic.com/underwater-solar-cells-invented-at-nrl-yield-7-wattssq-meter-20120607/ https://www.greenoptimistic.com/underwater-solar-cells-invented-at-nrl-yield-7-wattssq-meter-20120607/#respond Thu, 07 Jun 2012 15:46:43 +0000 https://www.greenoptimistic.com/?p=24875 A new type of high bandgap underwater solar cell has been developed at the U.S. Naval Research Laboratory (NRL). Previously limited by the filter that water sheds on the light entering it, this gallium-indium phosphide solar cell is best suited for this type of application. GaInP solar cells are highly efficient in light whose wavelength […]

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]]> https://www.greenoptimistic.com/underwater-solar-cells-invented-at-nrl-yield-7-wattssq-meter-20120607/feed/ 0 24875 Ion Tiger, Fuel Cell Powered UAV Sets Flight Time Record https://www.greenoptimistic.com/ion-tiger-fuel-cell-powered-uav-sets-flight-time-record-20091017/ https://www.greenoptimistic.com/ion-tiger-fuel-cell-powered-uav-sets-flight-time-record-20091017/#comments Sat, 17 Oct 2009 06:39:10 +0000 https://www.greenoptimistic.com/?p=4802 Ion Tiger is a hydrogen-powered fuel cell unmanned air vehicle (UAV) developed by the Naval Research Laboratory . It has set an unofficial flight endurance record by flying 23 hours and 17 minutes at Aberdeen Proving Ground.

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