Accession Number:

ADA017772

Title:

Experimental Optimization of Propeller Rudder Orientation for Minimum Vibratory Loading

Descriptive Note:

Final rept.

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF OCEAN ENGINEERING

Report Date:

1975-02-01

Pagination or Media Count:

119.0

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.

Subject Categories:

  • Marine Engineering
  • Fluid Mechanics
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE