THE PERFORMANCE GAINS OF USING WIDE, FLUSH BOUNDARY LAYER INLETS ON WATER-JET PROPELLED CRAFT
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 percent to 12 percent over conventional flush inlets is predicted for a planing craft application. (Author)
David Taylor Naval Ship R&D CenterPropulsion and Auxiliary Systems Department
Annapolis, MD United States 21402
- Purnell, J G
- Publication Date: 1975-3
- Pagination: 45 p.
- TRT Terms: Boundary layer flow; Engine efficiency; Hydrofoil boats; Propulsion; Waterjet propelled craft
- Old TRIS Terms: Hydrofoil craft; Propulsive efficiency; Waterjet propulsion
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00136251
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: PAS-75-45 R&D Rpt.
- Files: TRIS
- Created Date: Jul 22 1976 12:00AM