Experimental Optimization of Propeller Rudder Orientation for Minimum Vibratory Loading

Abstract

Propeller induced vibratory forces acting on the rudder of a water tunnel simulation of the SEA CONTROL SHIP are measured as a function of longitudinal and transverse clearance in order to determine an optimum location. The influence of propeller-rudder clearance on steady state propulsion and rudder effectiveness is obtained. It is found that vibratory forces measured at a cavitation number corresponding to full power are three times the corresponding values measured without cavitation. A significant reduction in vibratory force at zero rudder angle appears to be possible by moving the rudder from the present design location. The present transverse propeller-rudder clearance appears to be optimum.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1975
Accession Number
ADA017772

Entities

People

  • Anthony B. Zolotas
  • Justin E. Kerwin

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Barometric Pressure
  • Boundary Layer
  • Dynamic Response
  • Engineering
  • Load Cells
  • Measurement
  • Mechanical Engineering
  • Orientation (Direction)
  • Plastic Explosives
  • Propeller Shafts
  • Propellers
  • Resonant Frequency
  • Simulations
  • Static Pressure
  • Steady State
  • Strain Gages
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Marine Hydrodynamics