ScholarLens Back to search
1989•Unpublished venueRequires access

PROPULSIVE EFFICIENCY OF SHIP WITH CONTRAROTATING PROPELLERS

Noriyuki Sasaki, Yoshitaka Ukon, Kuniharu Nakatake

Open publisher page 0 citations

Abstract

The paper deals with the theory and the experiment on a set of contrarotating propellers (CRP) based on the open characteristics of CRP. Another is an interaction theory between CRP and a rudder. Using the former propeller theory, the efficiency loss is investigated for a conventional propeller and CRP. From the results computed by the interaction theory, it is revealed that the effects of a rudder on propulsive efficiency of a ship with CRP are considerably large compared with that of a conventional propeller. In order to evaluate these theories, propeller open tests, resistance and self-propulsion tests are conducted with tanker and container ship models. The agreement between the calculated results and the experimental ones is fairly good.

About this research paper

What this paper is about

The paper deals with the theory and the experiment on a set of contrarotating propellers (CRP) based on the open characteristics of CRP. Another is an interaction theory between CRP and a rudder. Using the former propeller theory, the efficiency loss is investigated for a conventional propeller and CRP. From the results computed by the interaction theory, it is revealed that the effects of a rudder on propulsive efficiency of a ship with CRP are considerably large compared with that of a conventional propeller. In order to evaluate these theories, propeller open tests, resistance and self-propulsion tests are conducted with tanker and container ship models. The agreement between the calculated results and the experimental ones is fairly good.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The paper deals with the theory and the experiment on a set of contrarotating propellers (CRP) based on the open characteristics of CRP. Another is an interaction theory between CRP and a rudder. Using the former propeller theory, the efficiency loss is investigated for a conventional propeller and CRP. From the results computed by the interaction theory, it is revealed that the effects of a rudder on propulsive efficiency of a ship with CRP are considerably large compared with that of a conventional propeller. In order to evaluate these theories, propeller open tests, resistance and self-propulsion tests are conducted with tanker and container ship models. The agreement between the calculated results and the experimental ones is fairly good.

Key concepts: Propeller, Rudder, Propulsive efficiency, Propulsor, Marine engineering, Propulsion, Container (type theory), Hull

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
PROPULSIVE EFFICIENCY OF SHIP WITH CONTRAROTATING PROPELLERS — Research Paper | ScholarLens