The aviation industry is witnessing significant advancements in propulsion systems, focusing on hybrid-electric, hydrogen, and Sustainable Aviation Fuel (SAF) technologies. These next-generation solutions are designed to address the industry's growing need for sustainability and reduced carbon emissions.
Dr. Michael Winter, Chief Science Officer at RTX (parent company of Pratt & Whitney), emphasized the importance of focusing on long-haul flights, which contribute to 80% of aviation emissions. Pratt & Whitney has made strides with its Geared Turbofan (GTF) engine, reducing fuel consumption by 20%, and is now working on the GTF Advantage, aiming for an additional 1% reduction.
Sustainable aviation fuel plays a crucial role in reducing CO2 emissions. According to Winter, Pratt & Whitney's modern engines can operate on 100% SAF, and the company is actively collaborating with industry partners to bring more SAF to the market.
In terms of hydrogen, Pratt & Whitney’s involvement dates back to Project Suntan in the 1950s. Today, it is working on the Hydrogen Steam Injected, Inter-Cooled Turbine Engine (HySIITE), designed to achieve zero CO2 emissions while reducing NOx emissions by up to 80%.
GE Aerospace’s CFM RISE program is also making waves, targeting a 20% reduction in CO2 emissions through an open fan architecture and hybrid-electric powertrain. Collaborations with NASA and Airbus further demonstrate the industry’s commitment to hydrogen and hybrid-electric propulsion.
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(Top image: Credit — CFM International)
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