Design Method for Contra-Rotating Propellers for High-Speed Crafts : Revising the Original Lerbs Theory in a Modern Perspective
Joint Authors
Brizzolara, Stefano
Tincani, Emilio P.
Grassi, Davide
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-18
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
The main theoretical and numerical aspects of a design method for optimum contrar-rotating (CR) propellers for fast marine crafts are presented.
We propose a reformulated version of a well-known design theory for contra-rotating propellers, by taking advantage of a new fully numerical algorithm for the calculation of the mutually induced velocities and introducing new features such as numerical lifting surface corrections, use of an integrated modern cavitation/strength criteria, a modified method to consider different numbers of blades among the two propellers, and to allow for an unloading function in the search for the optimal circulation distribution.
The paper first introduces the main theoretical principles of the new methods and then discusses the influence of the main design parameters on an emblematic example of application in the case of counter rotating propellers for a pod propulsor designed for fast planing crafts (35 knots and above).
American Psychological Association (APA)
Brizzolara, Stefano& Grassi, Davide& Tincani, Emilio P.. 2012. Design Method for Contra-Rotating Propellers for High-Speed Crafts : Revising the Original Lerbs Theory in a Modern Perspective. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-18.
https://search.emarefa.net/detail/BIM-469765
Modern Language Association (MLA)
Brizzolara, Stefano…[et al.]. Design Method for Contra-Rotating Propellers for High-Speed Crafts : Revising the Original Lerbs Theory in a Modern Perspective. International Journal of Rotating Machinery No. 2012 (2012), pp.1-18.
https://search.emarefa.net/detail/BIM-469765
American Medical Association (AMA)
Brizzolara, Stefano& Grassi, Davide& Tincani, Emilio P.. Design Method for Contra-Rotating Propellers for High-Speed Crafts : Revising the Original Lerbs Theory in a Modern Perspective. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-18.
https://search.emarefa.net/detail/BIM-469765
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-469765