AN EXPERIMENTAL STUDY OF HYDROELASTIC INSTABILITIES OF FINITE SPAN HYDROFOILS UNDER CAVITATING CONDITIONS,

Abstract

This report presents the results of water tunnel tests that were carried out in order to determine the conditions for the occurrence of hydroelastic instabilities (flutter and/or divergence) of cavitated hydrofoils. No flutter or divergence was experienced in these tests for the particular parameter conditions considered, but continuous (and often severe) oscillations were experienced in all tests when the cavity length was approximately equal to 0.75 times the chord. The validity of theoretical techniques in predicting the occurrence of the various types of hydroelastic instability (including steady state oscillations) is discussed, and it is concluded that the test conditions provided limited means for theoretically determining the onset of flutter and/or divergence.

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1964
Accession Number
AD0603265

Entities

People

  • August F. Lehman
  • Paul Kaplan

Tags

DTIC Thesaurus Topics

  • Hydrofoils
  • Instability
  • Oscillation
  • Steady State
  • Tunnels
  • Water Tunnels

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Marine Propulsion Engineering and Naval Architecture
  • Structural Dynamics.