Wake Fraction_Thrust Deduction_Relative Rotaion
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Input data Draft 6 6.6 Cb 0.596 0.624 Cp 0.692 0.7166 Lcb -2.15 -3.5 relative to 1/2Lwl P/D 1.319 1.313 pitch ratio Wake fraction w=0.55*Cb-0.2 0.128 0.143 k 0.8 0.8 0.7 w' = k*w 0.102 0.115 Thrust deduction t=0.7*w+0.06 0.149 0.160 k 0.9 0.6 0.6 t' = k*t 0.000 0.096 Relative rotation ɳr =0.9737+0.111*(Cp-0.0225*Lcb)-0.06325P/D ɳr 0.972 0.979
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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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