Marine propulsion – Jet drive – Propulsion fluid is pressurized gas
Patent
1981-07-23
1984-01-03
Barefoot, Galen L.
Marine propulsion
Jet drive
Propulsion fluid is pressurized gas
114338, 416 20R, 416 90A, B63H 118, B63H 1108, B63H 1906, B63H 2326
Patent
active
044240422
ABSTRACT:
A propulsion system for an underwater vehicle includes a solid propellant gas generator producing gas which drives a gas turbine. The turbine drives one, or alternately two, centrifugal pumps which induct sea water from intake ports and supply it under pressure through a passage to passages leading to tip nozzles in the blades of a propeller which drives the vehicle, thereby using the reaction force from the tip nozzles to drive the propeller. Exhaust gas, after driving the turbine, is conducted through a conduit and to an annular chamber where it is cooled by means of a spray of sea water, thus condensing the steam present and reducing the volume of exhaust gas. The exhaust gas is then connected to the base of the propeller blades where it is exhausted into a low pressure region or, alternately, into passages in blades parallel to the water conduits such that the gas flow is exhausted at the propeller tips adjacent the water nozzles, thus ventilating the cores of the tip vortices emanating from each blade into which the water jets are discharged. Thus an external eductor is created which is actuated by the water jets and which compresses the exhaust to ambient pressure, thus lowering the back pressure on the thermal engine, be it a turbine or positive displacement type.
REFERENCES:
patent: 2428191 (1947-09-01), Alterio
patent: 2511156 (1950-06-01), Glass
patent: 3188497 (1965-06-01), Christensen
patent: 3273333 (1966-09-01), Roulund
patent: 3288100 (1966-11-01), Cox
patent: 3402555 (1968-09-01), Piper
patent: 3643438 (1972-02-01), Barsby
patent: 4188406 (1980-02-01), Tachmindji
Barefoot Galen L.
Bartz C. T.
Smith Robert C.
The Bendix Corporation
Thornton W. F.
LandOfFree
Propulsion system for an underwater vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Propulsion system for an underwater vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Propulsion system for an underwater vehicle will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1030553