LONGITUDINAL VIBRATION OF PROPULSION SYSTEM ON USS SIMON LAKE (AS-33)

Abstract

Measurements were made on the propulsion system of the USS SIMON LAKE (AS-33) in February 1965 as part of a program to improve analysis procedures used by the Navy for predicting the longitudinal vibration of shaft propulsion systems. The objectives were to find the axial exciting forces and damping associated with the propulsion system of this ship, as well as to determine how the gear case, turbines, condenser, and machinery foundation affect longitudinal vibration. Alternating thrust in the shaft and longitudinal displacement of the gear case, low-pressure turbine, condenser, and machinery foundation were measured. A resonance was found to exist in the operating range, but it is not considered detrimental. The gear case, turbines, and condenser move essentially as one unit. A mass-elastic system derived from measured data includes a level effect acting on the foundation mass. The exciting forces are lower than usual, except at or near full power.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1966
Accession Number
AD0629273

Entities

People

  • Gary P. Antonides

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Center Of Gravity
  • Equations Of Motion
  • Frequency
  • Gravity
  • Measurement
  • Model Basins
  • Peak Values
  • Power
  • Propellers
  • Propulsion Systems
  • Reduction Gears
  • Resonance
  • Resonant Frequency
  • Ship Model Basins
  • Strain Gages
  • Thrust Bearings
  • Wiring Diagrams

Fields of Study

  • Engineering

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Naval Architecture and Marine Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).