Twin outboard stern drive boat propulsion unit

Details Twin outboard stern drive boat propulsion unit Twin outboard stern drive boat propulsion unit

1994-02-04

1994-12-06

Avila, Stephen P.

Ships

Hull or hull adjunct employing fluid dynamic forces to...

Having hydrofoil

440 63, B63B 124

Patent

active

053700759

ABSTRACT:
Boat propulsion unit, comprising two outboard Propeller drives (3,4), having anti-cavitation plates (7), which are coupled to each other via a tie-bar (10) with a wing profile. In the trim position of the stern drive for low speed, the wing profile has an angle of attack in order to exert a lifting force on the stern drives under the influence of the water flowing past it.

REFERENCES:
patent: 2999476 (1961-09-01), Johnson
patent: 3756186 (1973-09-01), Nordling
patent: 4756265 (1988-07-01), Cane
patent: 5049097 (1991-09-01), Rodskier et al.
patent: 5134954 (1992-08-01), Barry et al.

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