RESULTS OF THE UNSTEADY PROPELLER THEORY
Time dependent forces and moments are generated by the blades of a marine propeller operating in the irregular inflow at the stern of a ship. These unsteady loads may damage the blades and can also lead to excessive vibratory loading of the propulsion system and the hull, and cause annoyance of persons on board. Therefore, upper limits for the propeller induced vibratory loads should be introduced. As a consequence a procedure is necessary with which the unsteady hydrodynamic loading caused by the inhomogeneities of the propeller inflow can be obtained. It is apparent that a formal mathematical treatment of the problem using the nominal velocity distribution in the plane of the propeller as input would require considerable computing and numerical evaluation. Consequently simplified methods have been developed to calculate unsteady blade loading, and these methods are described in the report.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0020868X
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Corporate Authors:
International Periodical Press
193 Heemraadssingel
Rotterdam, Netherlands -
Authors:
- Schwanecke, H
- Laudan, J
- Publication Date: 1973-12
Media Info
- Pagination: p. 461-466
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Serial:
- International Shipbuilding Progress
- Volume: 20
- Issue Number: 232
- Publisher: IOS Press
- ISSN: 0020-868X
- Serial URL: http://www.iospress.nl/journal/international-shipbuilding-progress/
Subject/Index Terms
- TRT Terms: Aerodynamic lift; Mechanical loads; Propellers; Vibration
- Old TRIS Terms: Lifting surface theory; Propeller loading; Propeller vibration; Unsteady loading
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00051210
- Record Type: Publication
- Source Agency: International Periodical Press
- Files: TRIS
- Created Date: Feb 28 1974 12:00AM