National Aeronautics and Space Administration

The Promise And Challenges Of Ultra High Bypass Ratio Engine Technology and Integration

Chris HughesUltra High Bypass Engine Technology Sub-ElementPropulsion Technology Element NASA Glenn Research Center

Environmentally Responsible Aviation ProjectIntegrated Systems Research Program

AIAA Aero Sciences MeetingJanuary 4-7, 2011

www.nasa.gov

Geared Turbofan Technology Enables a Step-Change in Ultra High Bypass Propulsion

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Courtesy Pratt & Whitney

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NASA’s Subsonic Transport System Level MetricsSummarizing the potential technology payoff …

…. Innovative technology for dramatically reducing noise, emissions and fuel burn

Propulsion System Fuel Burn Drivers

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Propulsive Efficiency Trend with Fan Pressure Ratio

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Geared Turbofan Technology Enables Paradigm Shifts

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NASA/P&W Partnership on Geared Turbofan Technology

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GTF Emissions Reduction Goals

Ultra High Bypass Technology Development Roadmap

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Summary