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January 24,2025

Pratt & Whitney Debuts Hydrogen Steam Hybrid Engine for Zero-Emission Flights: USA

Pratt & Whitney has introduced the Hydrogen Steam-Injected, Intercooled Turbine Engine (HySIITE), a cutting-edge propulsion system designed for aviation. This engine aims to achieve zero in-flight CO2 emissions and up to an 80% reduction in nitrogen oxide (NOx) emissions. The innovative semi-closed system architecture is designed to achieve greater thermal efficiency than fuel cells and reduce operating costs compared to sustainable aviation fuels.

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