Advanced Propulsor Design Studies
PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB
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It is the purpose of the propulsor to convert rotational shaft energy into a propulsive thrust. Ideally, this conversion is to be accomplished with the most efficient, vibration-free and inexpensive device. However, emphasis on achieving a particular performance goal such as cavitation resistance, efficiency, or propulsor weight and mechanical simplicity may limit the designer in the type of propulsor configuration to be selected. It is the intent of this document to review the propulsive characteristics of various propulsive types for application on planing hull type craft. On the basis of these studies the performance advantages and shortcomings associated with each type of propulsor will be discussed. The performance of the conventional open propeller as well as propellers employing stationary counterswirl vanes located upstream of the propeller reaction fin propulsor shall be reviewed. Ducted propulsors employing a stator blade located upstream of the rotor shall also be considered. Keywords Pre-swirl vanes Energy conservation Coast Guard Ships and Charts.
- Marine Engineering