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

doi:10.1115/1.2346697

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 journal › Article › peer-review

3 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 language	English (US)
Pages (from-to)	772-777
Number of pages	6
Journal	Journal of Vibration and Acoustics, Transactions of the ASME
Volume	128
Issue number	6
DOIs	https://doi.org/10.1115/1.2346697
State	Published - Dec 2006

All Science Journal Classification (ASJC) codes

Acoustics and Ultrasonics
Mechanics of Materials
Mechanical Engineering

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1115/1.2346697

Cite this

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title = "Hydrofoil leading edge isolation for vibration and noise reduction in marine systems",

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.",

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pages = "772--777",

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T1 - Hydrofoil leading edge isolation for vibration and noise reduction in marine systems

AU - Brungart, Timothy A.

AU - Myer, Eric C.

AU - Capone, Dean E.

AU - Campbell, Robert L.

AU - Petrie, Howard L.

PY - 2006/12

Y1 - 2006/12

N2 - 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.

AB - 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.

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

Abstract

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