DOWNWIND VMG GREATER THAN WINDSPEED WEDGE

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=H_OKNr120t4

This animation shows how sail vehicles are able to outrun the wind, that pushes them (achieve a downwind velocity-made-good greater than true wind speed). As an analogy a wedge squeezed between two oblique edges is shown. • Vector diagram showing how the propulsive forward force is generated by the sail: • https://imgur.com/a/WYlKTjo • Interactive vector diagram for optimal sail courses: • https://www.geogebra.org/m/tj5qf3w2 • Real world data for iceboats (note the diagram on page 4): • https://www.nalsa.org/Articles/Cetus/... • • See this video: • DDWFTTW#.avi for a design that could go DIRECTLY downwind faster that the wind using this type of tacking • • See this: • DDWFTTW : TACKING PROPELLER BLADE (WE... for an even cleverer version of DIRECTLY downwind faster that the wind using a propeller. • Comparison of vectors for the sail craft and the propeller blade: • https://imgur.com/a/obNUVT5

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