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International Journal of Innovative Research and Development, Vol 4, No 7Sp (2015), Pagination:
Abstract
Inordertoassessthestaticanddynamic responseofanAFTpropellerofContrarotatingpropeller(CRP)forentirerangeofitsoperation,ananalysiswascarriedoutbyFEM(FiniteElementMethod)andvalidatedbyanalyticalapproach.FromtheStaticanalysisitisfoundthatthestressanddeflectionarewellwithinsafelimits.Theelasticdeformationaresosmall,thattheywon’taffecthydrodynamicloaddistribution..ThedynamicanalysesofCRPindicatethatitissafeinitsentire rangeofoperationasfarasphenomenonofResonanceisconcerned.Alsoitwasobservedthatmaximumharmonicresponseofthepropellerontheapplicationofdynamicloadingisfarlesserthanitsfailurelimit withinspecifiedoperatingrange.
Inordertoassessthestaticanddynamic responseofanAFTpropellerofContrarotatingpropeller(CRP)forentirerangeofitsoperation,ananalysiswascarriedoutbyFEM(FiniteElementMethod)andvalidatedbyanalyticalapproach.FromtheStaticanalysisitisfoundthatthestressanddeflectionarewellwithinsafelimits.Theelasticdeformationaresosmall,thattheywon’taffecthydrodynamicloaddistribution..ThedynamicanalysesofCRPindicatethatitissafeinitsentire rangeofoperationasfarasphenomenonofResonanceisconcerned.Alsoitwasobservedthatmaximumharmonicresponseofthepropellerontheapplicationofdynamicloadingisfarlesserthanitsfailurelimit withinspecifiedoperatingrange.
Keywords
Contra-Rotating Propeller; Dynamic response; Finite element method, Harmonic Response, Shape functions, Stress, Deflection, Unsymmetrical bending, Taylor’s method
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