Accession Number : ADD016009

Title :   Marine Propulsion Unit With Controlled Cyclic and Collective Blade Pitch.

Descriptive Note : Patent, Filed 30 Dec 92, patented 5 Oct 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Schneider, Willian E

Report Date : 05 Oct 1993

Pagination or Media Count : 11

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.

Descriptors :   *MARINE PROPULSION, *PROPELLER BLADES, *PATENT APPLICATIONS, ANGLES, BLADES, CONTROL SURFACES, COUPLERS, DISPLACEMENT, DRAG, INTEGRALS, MOTION, PIVOTS, PLATES, RUDDERS, SUBMERSIBLES, SURFACES, THRUST, VARIATIONS, ACTUATORS, PROPULSION SYSTEMS

Subject Categories : Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE