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Optimal Shape Design of Mail-Slot Nacelle on N3-X Hybrid Wing-Body ConfigurationSystem studies show that a N3-X hybrid wing-body aircraft with a turboelectric distributed propulsion system using a mail-slot inlet/nozzle nacelle can meet the environmental and performance goals for N+3 generation transports (three generations beyond the current air transport technology level) set by NASA's Subsonic Fixed Wing Project. In this study, a Navier-Stokes flow simulation of N3-X on hybrid unstructured meshes was conducted, including the mail-slot propulsor. The geometry of the mail-slot propulsor was generated by a CAD (Computer-Aided Design)-free shape parameterization. A novel body force model generation approach was suggested for a more realistic and efficient simulation of the flow turning, pressure rise and loss effects of the fan blades and the inlet-fan interactions. Flow simulation results of the N3-X demonstrates the validity of the present approach. An optimal Shape design of the mail-slot nacelle surface was conducted to reduce strength of shock waves and flow separations on the cowl surface.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Conference Paper
Kim, Hyoungjin
(Science Applications International Corp. Cleveland, OH, United States)
Liou, Meng-Sing
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
June 5, 2015
Publication Date
June 24, 2013
Subject Category
Numerical Analysis
Aircraft Propulsion And Power
Aircraft Design, Testing And Performance
Report/Patent Number
Meeting Information
Meeting: AIAA Applied Aerodynamics Conference
Location: San Diego, CA
Country: United States
Start Date: June 24, 2013
End Date: June 27, 2013
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 473452.
Distribution Limits
Public Use Permitted.
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