Double-acting Extremely Light Thermo-Acoustic (DELTA) Converter

NASA's Glenn Research Center has developed a novel Double-acting Extremely Light Thermo-Acoustic (DELTA) converter that operates at high frequencies (>400 Hz) with greatly increased specific power and no moving parts. Conventional engine power systems grow substantially in size and weight as their power level increases, as they manage their required reactive force, produced centrifugal force, or achievable current flow. In contrast, the DELTA converter enables an order of magnitude improvement in specific power compared to conventional engines.