Wake Fraction_Thrust Deduction_Relative Rotaion

Post on 17-Sep-2015

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Wake Fraction_Thrust Deduction_Relative Rotaion

Transcript of Wake Fraction_Thrust Deduction_Relative Rotaion

Twin ScrewInput dataDraft66.6Cb0.5960.624Cp0.6920.7166Lcb-2.15-3.5relative to 1/2LwlP/D1.3191.313pitch ratioWake fractionw=0.55*Cb-0.20.1280.143k0.80.80.7w' = k*w0.1020.115Thrust deductiont=0.7*w+0.060.1490.160k0.90.60.6t' = k*t0.0000.096Relative rotationr =0.9737+0.111*(Cp-0.0225*Lcb)-0.06325P/Dr 0.9720.979

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