Hydrodynamic Performance of a Proposed Cruising, Ducted Propeller for Submarines
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD
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A theoretical and experimental investigation was performed to determine the steady-state propulsion characteristics of a cruising, ducted- propeller system for a submersible body of revolution. The most important aspects of the design method and numerical procedures are discussed. The theoretically predicted and experimental performance of the ducted propeller showed good agreement on power. However the experimental rpm was 6 percent higher than predicted this difference is attributed to the fact that the propeller was underpitched due to an error in input to the computer program. The subject propulsion system was found to be less efficient than an optimum unshrouded, wake-adapted propeller, but the optimum rpm-diameter relationship was not determined for the ducted propeller.
- Submarine Engineering
- Fluid Mechanics