NDLI: Engine concept study for an advanced single-aisle transport

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Engine concept study for an advanced single-aisle transport

Content Provider	NASA Technical Reports Server (NTRS)
Author	Tong, Michael Berton, Jeffrey J. Guynn, Mark D. Fisher, Kenneth L. Thurman, Douglas R. Haller, William J.
Copyright Year	2009
Description	The desire for higher engine efficiency has resulted in the evolution of aircraft gas turbine engines from turbojets, to low bypass ratio, first generation turbofans, to today's high bypass ratio turbofans. Although increased bypass ratio has clear benefits in terms of propulsion system metrics such as specific fuel consumption, these benefits may not translate into aircraft system level benefits due to integration penalties. In this study, the design trade space for advanced turbofan engines applied to a single aisle transport (737/A320 class aircraft) is explored. The benefits of increased bypass ratio and associated enabling technologies such as geared fan drive are found to depend on the primary metrics of interest. For example, bypass ratios at which mission fuel consumption is minimized may not require geared fan technology. However, geared fan drive does enable higher bypass ratio designs which result in lower noise. The results of this study indicate the potential for the advanced aircraft to realize substantial improvements in fuel efficiency, emissions, and noise compared to the current vehicles in this size class.
File Size	13906273
Page Count	97
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20090030897
Archival Resource Key	ark:/13960/t6k122h68
Language	English
Publisher Date	2009-08-01
Access Restriction	Open
Subject Keyword	Aeronautics (general) Engine Design Bypass Ratio Noise Reduction Gas Evolution Turbofans Gas Turbine Engines Propulsion Aircraft Design Turbojet Engines Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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