A Noise and Emissions Assessment of the N3-X Transport

Analytical predictions of certification noise and exhaust emissions for NASA's N3-X - a notional, hybrid wingbody airplane - are presented in this paper. The N3-X is a 300-passenger concept transport propelled by an array of fans distributed spanwise near the trailing edge of the wingbody. Thes...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Conference Proceedings
Main Authors Berton, Jeffrey J, Haller, William J
Format Conference Proceeding
LanguageEnglish
Published Hampton NASA/Langley Research Center 13.01.2014
Subjects
Aircraft noise
Certification
Design modifications
Electric motors
Emission analysis
Exhaust emission
Exhaust systems
Hybrid propulsion
Noise
Noise prediction (aircraft)
Propulsion systems
Propulsive efficiency
Systems analysis
Transport
Turboshaft engines
Turboshafts
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Summary:Analytical predictions of certification noise and exhaust emissions for NASA's N3-X - a notional, hybrid wingbody airplane - are presented in this paper. The N3-X is a 300-passenger concept transport propelled by an array of fans distributed spanwise near the trailing edge of the wingbody. These fans are driven by electric motors deriving power from twin generators driven by turboshaft engines. Turboelectric distributed hybrid propulsion has the potential to dramatically increase the propulsive efficiency of aircraft. The noise and exhaust emission estimates presented here are generated using NASA's conceptual design systems analysis tools with several key modifications to accommodate this unconventional architecture. These tools predict certification noise and the emissions of oxides of nitrogen by leveraging data generated from a recent analysis of the N3-X propulsion system.