Water vessel propulsion apparatus

Details Water vessel propulsion apparatus Water vessel propulsion apparatus

1993-06-03

1994-09-06

Avila, Stephen P.

Marine propulsion

Jet drive

Propulsion fluid is pressurized gas

440 47, B63H 1100

Patent

active

053443454

ABSTRACT:
A water jet propulsion apparatus creates a high speed water jet rearwardly through a duct in a hull by injecting air and water into the duct from at least one injection port, thereby to impart a thrust to the hull. The need of forming protrusions such as an impeller within the duct thus is eliminated, and the resistance loss of the jet is minimized. Propulsion efficiency is improved remarkably and noise is reduced, while at the same time course stability is improved.

REFERENCES:
patent: 3149600 (1964-09-01), Traksel
patent: 3273333 (1966-09-01), Roulund
patent: 3288100 (1966-11-01), Cox et al.
patent: 3875885 (1975-04-01), Balquet et al.
patent: 4767364 (1988-08-01), Lenz
patent: 5049096 (1991-09-01), Henn

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