HYDROELASTIC VARIABLES INFLUENCING PROPELLER AND HYDROFOIL SINGING

These basic studies are directed at determining the effects of both geometric and structural modifications on the flow-induced vibration of streamlined bodies. The phenomenon is examined within the framework of an analytical model of the excitation of transverse bending modes of the hydrofoil or propeller blade by speed-dependent hydrodynamic pressures. The flow-induced pressures have been determined experimentally in a wind tunnel on a two-dimensional strut outfitted with a movable trailing edge which was oscillated at varying frequencies with variable amplitude. The analytical model was used with the empirically determined pressure data and measured loss factors to calculate the hydroeleastic performance of the hydrofoils for comparison with the observed acceleration spectra.

  • Supplemental Notes:
    • Noise and Fluids Engineering, presented at the Winter Annual Meeting of ASME, Altanta, Georgia, November 27-December 2, 1977.
  • Corporate Authors:

    Society of Automotive Engineers

    2100 West Big Beaver Street
    Troy, MI  United States  48084

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Blake, W K
    • Maga, L J
    • Finkelstein, G
  • Publication Date: 1977

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00178967
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Aug 19 1978 12:00AM