Vessel provided with at least one water jet propulsion unit

Details Vessel provided with at least one water jet propulsion unit Vessel provided with at least one water jet propulsion unit

1988-11-16

1990-05-29

Basinger, Sherman D.

Marine propulsion

Jet drive

440 47, 416 93A, B63H 1100

Patent

active

049292005

ABSTRACT:
Vessel provided with at least one water jet propulsion unit consisting of a casing containing, between an intake (3) tangential to the hull (2) and a rear water outlet (4), a duct (5) upstream of the propulsion device, an impeller (6), fixed flow-correction guide vanes (7) and a tail cone (8) carried by the blades which with the casing (9) form the tail pipe (10). The cross section of the tail pipe (10) varies but within narrow limits between the vanes (7) and the outlet (4) by virtue of a number of gas injection slots situated in the area of the trailing edges of the vanes (7) and connected by a circuit to a supply of compressed gas (16). The gas supply circuit includes an external annular chamber (14) formed within the casing and the shroud surrounding the vanes (7) and connected to the injection slots (25, 26, 29). Of application to vessels requiring very high thrusts.

REFERENCES:
patent: 3214903 (1965-11-01), Cochran
patent: 3249083 (1966-05-01), Irgens
patent: 4631032 (1986-12-01), Nishida

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