Series on Model Tests on Ducted Propellers

Abstract

Results of an investigation into nozzle shapes, reducing the flow rate through the propeller, are presented. The purpose of this reduction is to prevent the occurrence of cavitation. The investigation was carried out under Contract No. N62558 -3960 of the U.S. Department of the Navy, David Taylor Model Basin, through its U.S. Navy European Research Contract Program. A theory is described for the numerical calculation of systematic series of nozzles shapes. The shape of the nozzles was chosen to produce ram pressures at the propeller plane in order to delay the onset of cavitation. Tunnel experiments were carried out with the above nozzles.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1972
Accession Number
AD0746868

Entities

People

  • J. D. Van Manen
  • M. W. Oosterveld

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Flow
  • Flow Fields
  • Flow Rate
  • Geometry
  • Leading Edges
  • Mathematical Models
  • Model Basins
  • Model Tests
  • Propellers
  • Propulsion Systems
  • Radial Velocity
  • Ship Model Basins
  • Ship Models
  • Shrouded Propellers
  • Static Pressure
  • Trailing Vortices
  • Two Dimensional

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Combustion and Flow Dynamics.
  • Naval Architecture and Marine Engineering.