Marine Propulsion

ABOUT THE COURSE:The course covers different aspects of marine propellers and propulsion starting with the basic concepts of screw propeller geometry, theories of propeller action, hydrodynamics in open water and behind-hull conditions and practical calculations of ship powering from model test results. Other topics include propeller cavitation, blade strength, and engine-propeller matching. Some propeller design methods and concepts will be discussed. To give a general overview of the propulsors used in marine vessels, controllable-pitch propellers, ducted propellers, podded propellers, and unconventional propulsion devices like waterjets, oscillating propulsors etc. will be included along with thrust augmentation devices for improving energy efficiency. The course should provide a general understanding of marine propulsion for both graduate students and professionals working in the maritime industry.INTENDED AUDIENCE: Students pursuing B-Tech/ M-Tech degrees in Naval Architecture, research scholars, and working professionals in the maritime industry.PREREQUISITES: Knowledge of Hydrodynamics, Basic Ship Theory and Ship Resistance.INDUSTRY SUPPORT: Shipbuilding industry, Naval Architecture firms

Week 1: Introduction, Screw Propeller Geometry, Momentum Theory Week 2:Blade Element Theory, Circulation Theory, Other Models for Propeller Action Week 3:Laws of Similarity, Dimensional Analysis, Open Water characteristics, Methodical Series Week 4:Hull-Propeller Interaction, Propulsive Coefficients, Efficiency, Engine-Propeller Matching Week 5:Propulsion Model Tests, Scale Effects, Powering Performance Extrapolation, Propeller Cavitation Week 6:Propeller Materials, Blade Strength, Propeller Design Week 7:Controllable Pitch Propellers, Ducted Propellers, Surface Piercing Propellers, Podded Propellers, Thrusters Week 8:Unconventional Propulsion Devices, Thrust Augmentation Devices.