Oscillating-foil type underwater propulsor with a joint
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United States of America Patent
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Jun 29, 2010
Grant Date -
Jul 30, 2009
app pub date -
Oct 9, 2008
filing date -
Jan 24, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An oscillating-foil type underwater propulsor with a joint provided in the invention, the propulsor including a streamline foil having a foil surface being parallel to a water surface and a span length of at least twice as long as an average chord length of the streamline foil, and a heaving mechanism undergoing heaving motion perpendicular to a propulsion direction of the propulsor and having a transmission section, wherein the transmission section is pivotally connected to the streamline foil to form a joint, the joint being provided at the middle of the span length and having a rotation center located within a circular area, which has a radius of one third of the average chord length and is centered at the point one third of the average chord length ahead of the lifting center of the streamline foil.
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