Pratt & Whitney Unveils Details Of Hydrogen-Steam Hybrid Engine Cycle

Hydrogen Steam-Injected, Intercooled Turbine Engine concept diagram

Air enters a small reverse-flow core at the rear of the engine, powering the fan and then exiting via an evaporator, condenser and water separator.

Credit: Pratt & Whitney
Hydrogen fuel may offer attractive pathways toward the goal of zero carbon emissions, but turning that vision into a practical propulsion system is another matter. Now Pratt & Whitney thinks it may have taken the first steps along that path with the Hydrogen Steam-Injected, Intercooled Turbine...
Guy Norris

Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.

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