Causes and Corrections for Propeller-excited Airborne Noise on a Naval Auxiliary Oiler PDF Download
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Author: Michael B. Wilson
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 66
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Book Description
Author: Michael B. Wilson
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 66
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Book Description
Author: Michael B. Wilson
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 29
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Book Description
The AO-177, first of a new class of Naval Auxiliary Oilers, experienced high levels of inboard airborne noise and initial-stage erosion damage on its skewed, seven-bladed propeller during builder's trails. This report describes the problems, corrective design modifications considered, and procedures and rationale used to develop a successful corrective design modification consisting of a fin to improve the flow into the propeller. To evaluate the problem, extensive model experiments were conducted, including flow visualization, wake survey, powering experiments, and a crucial series of cavitation experiments including propeller-induced hull pressure measurements in a large water tunnel. Experiments with two fin designs showed the superiority of a flow-accelerating configuration. Other experiments showed some benefits of altering the propeller blade shape. Propeller analyses were undertaken to provide design alternatives for retrofitting the ship with a new propeller. A full-scale trail with the final fin design provided evidence or reduction of the highest levels of airborne noise, reduction in the initial-stage erosion damage, and minimal effect on ship speed. The result is that the AO-177 has been accepted by the fleet for normal service. (Author).
Author: United States. Office of Naval Research
Publisher:
ISBN:
Category : Cavitation
Languages : en
Pages : 672
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Author:
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 634
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Author:
Publisher:
ISBN:
Category : Naval architecture
Languages : en
Pages : 764
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Author: British Ship Research Association
Publisher:
ISBN:
Category : Shipbuilding
Languages : en
Pages : 922
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Book Description
Consists largely of abstracts of articles and papers of interest to shipbuilders, ship owners and marine engineers.
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 1096
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Author: Society of Naval Architects and Marine Engineers (U.S.)
Publisher:
ISBN:
Category : Marine engineering
Languages : en
Pages : 722
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Book Description
List of members in vols. 1-24, 38-54, 57.
Author: Robert J. Boswell
Publisher:
ISBN:
Category : Propellers
Languages : en
Pages : 52
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Author:
Publisher:
ISBN:
Category : Piping
Languages : en
Pages : 164
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Book Description
