NDLI: Composite fan blade design for advanced engine concepts

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Composite fan blade design for advanced engine concepts

Content Provider	NASA Technical Reports Server (NTRS)
Author	Abumeri, Galib H. Chamis, Christos C. Kuguoglu, Latife H.
Copyright Year	2004
Description	The 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.
File Size	1384303
Page Count	17
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20040040080
Archival Resource Key	ark:/13960/t7sn5507r
Language	English
Publisher Date	2004-02-01
Access Restriction	Open
Subject Keyword	Structural Mechanics Boundary Layer Separation Damage Assessment Simulation Subsonic Flow Design Analysis Aerodynamic Characteristics Viability Buckling Leading Edges Fan Blades 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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