Lawrence Livermore National Laboratory (LLNL) has received a patent for a drone powered by a Stirling engine. The Stirling engine, operating at about 800 C, uses temperature difference to activate its gas-filed pistons. A parabolic mirror, which tracks the sun, would be used to heat a thermal battery consisting of lithium and lithium hydride. Heat stored in the battery would then be used to heat the Stirling engines gas, while the cold air outside the plane would provide the cooling for the engine.
Stirling Engine Powers Drone
Friday, 02. December 2005
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