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 journalArticle

2 Citations (Scopus)

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

Fingerprint

hydrofoils
Hydrofoils
leading edges
Noise abatement
noise reduction
isolation
vibration
hydraulic test tunnels
elastomers
Elastomers
wakes
upstream
Metal foil
foils
Tunnels
Turbulence
generators
turbulence

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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Hydrofoil leading edge isolation for vibration and noise reduction in marine systems. / Brungart, Timothy A.; Myer, Eric C.; Capone, Dean E.; Campbell, Robert L.; Petrie, Howard L.

In: Journal of Vibration and Acoustics, Transactions of the ASME, Vol. 128, No. 6, 01.12.2006, p. 772-777.

Research output: Contribution to journalArticle

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