Hydrofoil leading edge isolation for vibration and noise reduction in marine systems

Timothy A. Brungart, Eric C. Myer, Dean E. Capone, Robert L. Campbell, Howard L. Petrie

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A technique for reducing the vibration and noise from hydrofoils subject to unsteady lift is examined experimentally. Since the unsteady lift is known to be concentrated in the leading edge vicinity, a single-stage vibration isolation mount is integrated into a hydrofoil near its leading edge to inhibit the leading edge-generated unsteady forces from being transmitted to the remainder of the foil and any structures coupled to it. A single layer of elastomer forms the mount and is used to isolate the leading 20% chord of the hydrofoil from the remainder of the structure. The hydrofoil is excited into vibration by turbulence from an upstream wake generator in a water tunnel facility. Compared to a nonisolated hydrofoil, vibration reductions up to 10 dB in level are recorded on the portion of the hydrofoil isolated from the leading edge.

Original languageEnglish (US)
Pages (from-to)772-777
Number of pages6
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume128
Issue number6
DOIs
StatePublished - Dec 1 2006

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

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