Nautical propulsion performance enhancer

Details Nautical propulsion performance enhancer Nautical propulsion performance enhancer

1995-04-17

1996-04-09

Avila, Stephen

Marine propulsion

Screw propeller

Having means to control flow around propeller

440 78, B63H 118

Patent

active

055056423

ABSTRACT:
A nautical propulsion performance enhancer for a propeller of a marine propeller type propulsion system, comprising a facility for twisting and directing a flow of water into the propeller, in such a manner that swirling water will hit the propeller in a direction opposite to rotation of the propeller. A structure is for mounting the twisting and directing facility to the marine propeller type propulsion system adjacent the propeller, in order to overcome unwanted effects of cavitation and porpoising.

REFERENCES:
patent: 2355842 (1944-08-01), Arado
patent: 4798547 (1989-01-01), Gearhart

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