NA60033: Powering Of Ocean Vehicles

NA60033
Course name	Powering Of Ocean Vehicles
Offered by	Ocean Engineering & Naval Architecture
Credits	4
L-T-P	3-1-0
Previous Year Grade Distribution
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Semester	Autumn

Syllabus

Syllabus mentioned in ERP

Component of ship resistance, resistance similarity, dimensional analysis, Froude hypothesis; Viscous resistance, experiment with planks and plates, Reynolds experiment, turbulence stimulation; Friction lines, Form resistance, Model ship extrapolation; Wave resistance Kelvin wave pattern, waves generated by a ship, wave interference and humps and hollows in wave resistance; Air resistance; Appendage drag; Trial and service allowance. Resistance of submerged bodies. Variation of frictional resistance with days out of dock. Model testing facilities. Historical development of ship propulsion. Propeller action simple momentum theory; Screw propeller features; Interaction between hull and propeller, wake and thrust deduction relative rotative efficiency; Power transmission; propulsive efficiency and quasi propulsive co efficient; Laws of similarity for screw propellers; Propeller co efficients, charts and their use in propeller design and performance study; Cavitation nature, types, effect and prevention; Strength of propellers, estimation of blade root stress and blade thickness requirement.