Regulated aeration of gases exhausting through a propeller

Details Regulated aeration of gases exhausting through a propeller Regulated aeration of gases exhausting through a propeller

1986-09-05

1989-02-07

Basinger, Sherman D.

Marine propulsion

Means for accomodating or moving engine fluids

Means for handling exhaust gas

416 93A, B63H 128

Patent

active

048028720

ABSTRACT:
Aeration holes defined by an outer propeller hub include closure devices which seal the aeration holes during rotation of the propeller due to centrifugal forces in a predetermined speed of rotation range. The aeration holes provide high power at low boat speeds and are sealed at high boat speeds to avoid further aeration and loss of forward thrust. The speed of rotation at which the aeration hole are sealed is adjustable.

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