1. A four stroke, 12 cylinder medium speed Diesel engine is used to power a single screw ship.. The engine has a brake m

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1 A Four Stroke 12 Cylinder Medium Speed Diesel Engine Is Used To Power A Single Screw Ship The Engine Has A Brake M 1 (25.01 KiB) Viewed 58 times

1. A four stroke, 12 cylinder medium speed Diesel engine is used to power a single screw ship.. The engine has a brake mean effective pressure of 1.8 MPa, cylinder bore 0.4 m and stroke length 0.40 m. Engine and propeller are connected with a gearbox of reduction ratio 3:1. The hull surface area is S-2200 m², C, 0.0032.(including the contribution of appendages) - 0.20,-0.03. She is equipped with a propeller having D=2.8 m. It is intended that the propeller operates with J = 0.80, where the open water efficiency is n. - 0.70. Find: a. Engine revolutions b. Ship speed c. Power demand from the engine d. If the ship tows an identical sister ship, what shall be the power and speed be? (Assume that relative rotative efficiency and transmission efficiencies are equal to unity. 1-1-1.0)