Abstract: This study was conducted in an attempt to improve the hydrodynamic performance of a Weis-Fogh type ship propulsion mechanism by installing a spring to the wing so that the opening angle of ...

Abstract: The three-dimensional flows in the Weis-Fogh mechanism are studied by flow visualization and numerical simulation by a discrete vortex method. In this mechanism, two wings open, touching their ...

Abstract: 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 ...

Abstract: The velocity and pressure field of a ship’s Weis-Fogh-type propulsion mechanism are studied in this paper using an advanced vortex method. The wing (NACA0010 airfoil) and channel are approximated ...