Fuel efficient propulsor for outboard motors

Details Fuel efficient propulsor for outboard motors Fuel efficient propulsor for outboard motors

1987-06-29

1989-01-17

Peters, Jr., Joseph F.

Marine propulsion

Screw propeller

Having means to control flow around propeller

440 78, B63H 516

Patent

active

047985470

ABSTRACT:
Vanes are mounted to an assembly affixed upstream of propeller blades of an utboard motor, creating a counterswirl in the fluid flow to counter the swirl produced by the propeller rotation, enabling on essentially axial discharge jet. The vanes are applied to only a 180 degree sector of the inflow to the propeller.

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patent: 4529387 (1985-07-01), Brandt
patent: 4631036 (1986-12-01), Grothues-Spork

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