Ship’s Propulsion Mechanism of Two-Stage “Weis-Fogh” Type

[+] Author and Article Information
Michihisa Tsutahara, Takeyoshi Kimura

Kobe University, Nada, Rokko, Kobe 657 Japan

Kideok Ro

National Fishers Junior College of Tongyeong, 445 Inpyung-Dong, Chungmu, Kyungnam 650-160 Republic of Korea

J. Fluids Eng 116(2), 278-286 (Jun 01, 1994) (9 pages) doi:10.1115/1.2910267 History: Received January 03, 1989; Revised January 10, 1994; Online May 23, 2008


The dynamic properties of a ship’s two-stage “Weis-Fogh” type propulsion mechanism are experimentally and numerically investigated. In order to study the effects of the interaction of the two wings, the wings are designed in a manner that enable them to move close to each other. The opening angle and the moving speed are the same for both wings. Two cases of the phase differences of the wings’ motions are considered, the in-phase case and the out-of-phase case. The differences of the dynamic properties between the two wings are shown and the properties of this propulsion mechanism are discussed.

Copyright © 1994 by The American Society of Mechanical Engineers
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