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Nacelle Design for Mixed Turbofan Engines

[+] Author Affiliations
Jesuíno Takachi Tomita, Cleverson Bringhenti, João Roberto Barbosa

Instituto Tecnológico de Aeronáutica (ITA), São José dos Campos, SP, Brazil

Antonio Batista de Jesus

EMBRAER, Brazil

Paper No. GT2006-91212, pp. 201-210; 10 pages
doi:10.1115/GT2006-91212
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 2: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Environmental and Regulatory Affairs
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4237-1 | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME

abstract

Nacelles are responsible for good engine performance and considerable percentage of total aircraft drag, thus fuel consumption. Energy conservation and cost of fuel, among others, require good nacelle design. CFD calculations of the flow around it are a major design tool to predict shock waves, internal boundary layer in the nacelle forebody, high velocity zones and wake. Commercially available software may be used to calculate and visualize the flow at the most critical parts of the nacelle, allowing design modifications aiming at optimizations. This paper overviews the literature on nacelles, the methodologies involved in the design. A case study is presented for a long duct nacelle design, using an axis-symmetric model. Performance characteristics at important operating conditions are also presented.

Copyright © 2006 by ASME
Topics: Engines , Design , Turbofans

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