NDLI: Aeroelastic response of metallic and composite propfan models in yawed flow

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Aeroelastic response of metallic and composite propfan models in yawed flow

Content Provider	NASA Technical Reports Server (NTRS)
Author	Williams, Marc H. Nerayanan, G. V. Mehmed, Oral Kaza, Krishna Rao V.
Copyright Year	1988
Description	An analytical investigation of aeroelastic response of metallic and composite propfan models in yawed flow was performed. The analytical model is based on the normal modes of a rotating blade and the three dimensional unsteady lifting surface aerodynamic theory including blade mistuning. The calculated blade stresses or strains are compared with published wind tunnel data on two metallic and three composite propfan wind tunnel models. The comparison shows a good agreement between theory and experiment. Additional parametric results indicate that blade response is very sensitive to the blade stiffness and also to blade frequency and mode shape mistuning. From these findings, it is concluded that both frequency and mode shape mistuning should be included in aeroelastic response analysis. Furthermore, both calculated and measured strains show that combined blade frequency and mode shape mistuning has beneficial effects on response due to yawed flow.
File Size	2306195
Page Count	26
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19880020423
Archival Resource Key	ark:/13960/t0wq4vp79
Language	English
Publisher Date	1988-01-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Stress Analysis Composite Materials Propeller Fans Prop-fan Technology Unsteady Aerodynamics Strain Distribution Wind Tunnel Models Aeroelasticity Yaw Aerodynamic Loads 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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