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/sec. Determine the rpm a aatio and delivered power. T

/sec. Determine the rpm a aatio and delivered power. T

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3. A four-bladed propeller of 4.0 m diameter is required to produce an open water thrust of 300 kN at a speed of advance of 6.0 m/sec. Determine the rpm of the propeller for it to work at the optimum efficiency and corresponding pitch ratio and delivered power. Use the data given below for P/D =1.0. Hint: Use K/J? relation. P[D 1.0 J KT 10KQ 0.4250 0.5994 0.1 0.3984 0.5698 0.2 0.3689 0.5357 0.3 0.3365 0.4971 0.4 0.3013 0.4540 0.5 0.2631 0.4064 0.6 0.2221 0.3543 0.7 0.1782 0.2976 0.8 0.1314 0.2365 0.9 0.0818 0.1708 1.0 0.0292 0.1007
Transcribed Image Text:3. A four-bladed propeller of 4.0 m diameter is required to produce an open water thrust of 300 kN at a speed of advance of 6.0 m/sec. Determine the rpm of the propeller for it to work at the optimum efficiency and corresponding pitch ratio and delivered power. Use the data given below for P/D =1.0. Hint: Use K/J? relation. P[D 1.0 J KT 10KQ 0.4250 0.5994 0.1 0.3984 0.5698 0.2 0.3689 0.5357 0.3 0.3365 0.4971 0.4 0.3013 0.4540 0.5 0.2631 0.4064 0.6 0.2221 0.3543 0.7 0.1782 0.2976 0.8 0.1314 0.2365 0.9 0.0818 0.1708 1.0 0.0292 0.1007
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