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The Performance Gains of Using Wide. Flush Boundary Layer Inlets on Water-Jet Propelled Craft
Research and development rept.
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER ANNAPOLIS MD PROPULSION AND AUXILIARY SYSTEMS DEPT
Pagination or Media Count:
The application of a wide, flush inlet on a water-jet-propelled craft was investigated to determine performance gains from using primarily low momentum boundary layer flow for producing the propulsion jet. A method of predicting the boundary layer conditions, the pump size, and the overall water- jet system performance is given. Improvement in overall system efficiency or propulsive coefficient of 10 to 12 over conventional flush inlets is predicted for a planing craft application.
APPROVED FOR PUBLIC RELEASE