TINCANI , Emilio Pietro

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...

The paper presents a computational method developed for the design of contra-rotating propellers of high-speed craft propulsors. The method is based on Lerbs' lifting line theory, but with some new peculiarities introduced to adapt the method, originally devised by Morgan for slow speed propellers. The differences introduced in the method...