A Lifting-Surface Program for Contrarotating Propellers

Abstract

A new lifting-surface computer program for a set of CR propellers has been developed based on a modified version of the MIT lifting-surface design program with hub effects. This program automatically computes the velocities induced by one propeller on the other. In addition, the hub portion of the program is modified to account for the velocities induced by one propeller on the hub of the opposite propeller. The data from LDV measurements of induced velocities are used to adjust the shape and distribution of the wakes shed from the two propellers. A comparison between the conventional and the new methods for the design of a set contrarotating propellers for a surface ship is also given. Keywords: Marine propellers.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1989
Accession Number
ADA207595

Entities

People

  • Arthur M. Reed
  • Benjamin Y. Chen

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Computations
  • Computer Programs
  • Diameters
  • Efficiency
  • Engineering
  • Flow
  • Geometry
  • Lifting Surfaces
  • Mathematics
  • Measurement
  • Open Water
  • Propellers
  • Radial Velocity
  • Slipstream
  • Standards
  • Three Dimensional
  • Water

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Electrical Engineering
  • Marine Hydrodynamics