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Composite Fan Blade Design for Advanced Engine ConceptsThe aerodynamic and structural viability of composite fan blades of the revolutionary Exo-Skeletal engine are assessed for an advanced subsonic mission using the NASA EST/BEST computational simulation system. The Exo-Skeletal Engine (ESE) calls for the elimination of the shafts and disks completely from the engine center and the attachment of the rotor blades in spanwise compression to a rotating casing. The fan rotor overall adiabatic efficiency obtained from aerodynamic analysis is estimated at 91.6 percent. The flow is supersonic near the blade leading edge but quickly transitions into a subsonic flow without any turbulent boundary layer separation on the blade. The structural evaluation of the composite fan blade indicates that the blade would buckle at a rotor speed that is 3.5 times the design speed of 2000 rpm. The progressive damage analysis of the composite fan blade shows that ply damage is initiated at a speed of 4870 rpm while blade fracture takes place at 7640 rpm. This paper describes and discusses the results for the composite blade that are obtained from aerodynamic, displacement, stress, buckling, modal, and progressive damage analyses. It will be demonstrated that a computational simulation capability is readily available to evaluate new and revolutionary technology such as the ESE.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Abumeri, Galib H.
(QSS Group, Inc. Cleveland, OH, United States)
Kuguoglu, Latife H.
(QSS Group, Inc. Cleveland, OH, United States)
Chamis, Christos C.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
February 1, 2004
Subject Category
Structural Mechanics
Report/Patent Number
Meeting Information
Meeting: SAMPE 2003
Location: Long Beach, CA
Country: United States
Start Date: May 11, 2003
End Date: May 15, 2003
Sponsors: Society for the Advancement of Materials and Process Engineering
Funding Number(s)
WBS: WBS 22-708-48-11
Distribution Limits
Work of the US Gov. Public Use Permitted.
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