Directed thrust propulsion system
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United States of America Patent
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Feb 21, 2023
Grant Date -
N/A
app pub date -
Jun 29, 2022
filing date -
Jun 29, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A directed thrust propulsion system has a central hub and at least three blades that extends outward at a rake angle between about 20 to 70 degrees. Each blade is shaped as a portion of a cylindrical surface, in which concave side forms the blade face and is facing in direction of thrust generated by rotating the hub. The convex side of the blades minimizes drag in the water that resists forward motion while the concave shape and tilted end portions directs the thrust inward toward the extension of the hub's principal axis rearward. The directed thrust propulsion system may be deployed on inboard and outboard motors for all manner of watercraft to increase efficiency above 10 knots speed.
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