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Engineering · Mechanical Engineering
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A ship has a speed of 20.0knots when the propeller rpm is 180 and the brake power of the engine is 15000 kW. The effective power of the ship ať 20.0 knots is 10000kW, and the wake fraction is 0.200, the thrust deduction fraction 0.120 and the relative rotative efficiency 1.050, based on thrust identity. The shafting efficiency is 0.970. Calculate the delivered power and thrust power, the hull efficiency, propeller open water efficiency and propulsive efficiency, and the propeller thrust and torque. 2-

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