<ul><li>NASA has supported the development of a hybrid hydrogen-based engine for aircraft to eliminate emissions.</li><li>The engine, called Hy2PASS, uses a fuel cell and a gas turbine in a hybrid configuration.</li><li>By decoupling the compressor from the turbine, the system achieves increased efficiency and eliminates emissions.</li><li>The project is in the initial phase, focusing on proving the concept and optimizing energy requirements.</li></ul>

A Hybrid Hydrogen Drive Train Could Eliminate Aircraft Emissions

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