Marine propulsion unit with controlled cyclic and collective bla

Details Marine propulsion unit with controlled cyclic and collective bla Marine propulsion unit with controlled cyclic and collective bla

1992-12-30

1993-10-05

Sotelo, Jesus D.

Marine propulsion

Screw propeller

Variable pitch

114330, 416164, B63H 300

Patent

active

052499928

ABSTRACT:
An integral marine propulsion unit utilizes both collective and cyclic propeller blade pitch angle variations to generate a thrust vector in any of three degrees of motion for use with both the submersible and surface marine vessels. The present marine propulsion unit eliminates the need for extraneous drag generating control surfaces and rudders for motion control of a marine vessel by incorporating a flat plate mechanism which includes an Oldham coupler coupled to a pair of plates and a slotted plate coupled with one of the plates. The slotted plate and the one plate coupled to the slotted plate are relatively rotatable about a fixed axis. The flat plate mechanism permits relative angular displacement between the slotted plate and the one plate to collectively pivot all of the propeller blades and permits radial movement of the slotted plate along with propeller blades.

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Richard S. Brannin, "Tandem Propellers: A New Concept for DSV".
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Nanba et al, "Development of Variable Vector Propeller (1st Report)," Journal of the Kansai Society of Naval Architects, Japan, No. 210 Sep. 1988.

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