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Wind tunnel tests on the influence of propeller loading on ship rudder performance: four quadrant operation, low and zero speed operation

Wind tunnel tests on the influence of propeller loading on ship rudder performance: four quadrant operation, low and zero speed operation
Wind tunnel tests on the influence of propeller loading on ship rudder performance: four quadrant operation, low and zero speed operation
The results of wind tunnel tests on a rudder operating downstream of a propeller are presented. The experiments simulated the condition of a rudder operating in the proximity of a propeller but without the influence of the hull.

The tests were carried out in the 3.5m x 2.5m wind tunnel at the University of Southampton and form an extension to the basic rudder-propeller tests which have already been carried out and are reported on elsewhere. The rudders tested were all movable, and the propeller used in the tests was modelled on a Wageningen B4.40.

Tests were carried out with positive and negative wind speed and positive and negative propeller revolutions in order to simulate all the four quadrants of operation. These tests also included the case of zero and low wind speed.

Results are presented as rudder lift, drag and moment coefficients and centre of pressure for selected angles of attack and changes in propeller thrust loading. Surface pressure distributions over the rudder were also obtained in selected cases in order to provide a detailed knowledge of the distribution of forces over the rudder.

The results provide rudder force data for use in manoeuvring simulations and detailed data for the validation of numerical modelling of the interaction problem.
64
University of Southampton
Molland, A.F.
917272d0-ada8-4b1b-8191-1611875ef9ca
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce
Molland, A.F.
917272d0-ada8-4b1b-8191-1611875ef9ca
Turnock, S.R.
d6442f5c-d9af-4fdb-8406-7c79a92b26ce

Molland, A.F. and Turnock, S.R. (1993) Wind tunnel tests on the influence of propeller loading on ship rudder performance: four quadrant operation, low and zero speed operation (Ship Science Reports, 64) Southampton, UK. University of Southampton 162pp.

Record type: Monograph (Project Report)

Abstract

The results of wind tunnel tests on a rudder operating downstream of a propeller are presented. The experiments simulated the condition of a rudder operating in the proximity of a propeller but without the influence of the hull.

The tests were carried out in the 3.5m x 2.5m wind tunnel at the University of Southampton and form an extension to the basic rudder-propeller tests which have already been carried out and are reported on elsewhere. The rudders tested were all movable, and the propeller used in the tests was modelled on a Wageningen B4.40.

Tests were carried out with positive and negative wind speed and positive and negative propeller revolutions in order to simulate all the four quadrants of operation. These tests also included the case of zero and low wind speed.

Results are presented as rudder lift, drag and moment coefficients and centre of pressure for selected angles of attack and changes in propeller thrust loading. Surface pressure distributions over the rudder were also obtained in selected cases in order to provide a detailed knowledge of the distribution of forces over the rudder.

The results provide rudder force data for use in manoeuvring simulations and detailed data for the validation of numerical modelling of the interaction problem.

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More information

Published date: 1993
Additional Information: ISSN 0140-3818

Identifiers

Local EPrints ID: 46044
URI: https://eprints.soton.ac.uk/id/eprint/46044
PURE UUID: d8249e75-ba57-4f56-a879-0d6201ffabc2
ORCID for S.R. Turnock: ORCID iD orcid.org/0000-0001-6288-0400

Catalogue record

Date deposited: 16 May 2007
Last modified: 14 Mar 2019 01:55

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Contributors

Author: A.F. Molland
Author: S.R. Turnock ORCID iD

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