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Performance assessment of a concept propulsor: the thrust-balanced propeller

Lookup NU author(s): Professor Mehmet Atlar


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This paper presents the results of a numerical performance analysis to demonstrate the worthiness of a recently patented new concept propulsor, the so-called "thrust-balanced propeller (TBP)". The main advantage of this unconventional propulsor is its inherent ability to reduce the unsteady effect of blade forces and moments when it is operating in a non-uniform. wake flow. The propulsor comprises a pair of diametrically opposed blades that are connected to one another and mounted so as to be rotatable together through a limited angle about their spindle axis. A quasi-hydrodynamic approach is described and applied to perform the numerical analysis using a state-of-the-art lifting surface procedure for conventional propellers. Performance comparisons with a conventional fixed-pitch propeller are made for the blade forces and moments, efficiency, cavitation extents and fluctuating hull pressures. Bearing in mind the quasi-static nature of the analyses, the results present favourable performance characteristics for the thrust-balanced propeller and support the worthiness of the concept. However, the concept needs to be proved through physical model tests, which are planned to take in a cavitation tunnel. (C) 2001 Elsevier Science Ltd. All rights reserved.

Publication metadata

Author(s): Atlar M; Takinaci AC

Publication type: Article

Publication status: Published

Journal: Ocean Engineering

Year: 2002

Volume: 29

Issue: 2

Pages: 129-149

ISSN (print): 0029-8018

ISSN (electronic): 1873-5258

Publisher: Pergamon


DOI: 10.1016/S0029-8018(01)00005-1


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