ON THE INFLUENCE OF THE PROPELLER RACE ON LARGE TOWED STRUCTURES
The expected additional resistance due to the propeller race when towing large structures is discussed. Model tests and full scale tests, measuring the velocity distribution behind a working propeller are performed. The axial due to the propeller race on 3 different structures inserted in the propeller race is measured. The results show that in extreme cases the force on the towed structure may be greater than the propeller thrust, and this results in a motion opposite of that intended. With knowledge of the scale effects, model tests of tug and towed structures can be successfully performed.
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Corporate Authors:
Royal Norwegian Council for Scientific & Indus Res
Radhusgaten 8, Sentrum
Oslo, Norway -
Authors:
- Nielsen, F G
- Publication Date: 1976
Media Info
- Features: References;
- Pagination: p. 8-14
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Serial:
- Norwegian Maritime Research
- Volume: 4
- Issue Number: 4
- Publisher: Royal Norwegian Council for Scientific & Indus Res
Subject/Index Terms
- TRT Terms: Propellers; Tests; Thrust; Towing devices
- Uncontrolled Terms: Scale effect
- Old TRIS Terms: Propeller thrust; Towed bodies; Towing tests
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00152588
- Record Type: Publication
- Source Agency: Royal Norwegian Council for Scientific & Indus Res
- Files: TRIS
- Created Date: May 11 1977 12:00AM