Ships – Submersible device – Having attitude control
Patent
1979-09-24
1981-05-12
Blix, Trygve M.
Ships
Submersible device
Having attitude control
9 8R, B63G 822
Patent
active
042665000
ABSTRACT:
A compressed fluid hover control system for a submersible buoy in which the water level in a buoyancy chamber is controlled in accordance with external water pressure and predetermined levels of water in the buoyancy chamber. More specifically, a submersible buoy having a fluid-containing chamber containing a compressed fluid is connected to a buoyancy chamber by a gas inlet valve. A gas exhaust valve connects an upper portion of the buoyancy chamber to the surrounding water and a relief duct connects a lower portion of the buoyancy chamber to the surrounding water. Both the gas inlet and gas exhaust valves are controlled by a valve control circuit which opens and closes the valves in accordance with predetermined criteria related to water levels within the buoyancy chamber and the depth of the buoy as determined by a water pressure transducer. The valve control circuit thus causes the buoy to oscillate between predetermined depth levels, those levels changing as the compressed fluid is expended in order to maximize operating life of the buoy. In the specific embodiment described, four level sensors are utilized in the buoyancy chamber and four predetermined depths are programmed in the valve control circuit.
REFERENCES:
patent: 3171376 (1965-03-01), Sellner et al.
patent: 3179962 (1965-04-01), Shear et al.
patent: 3257672 (1966-06-01), Meyer et al.
patent: 3436776 (1969-04-01), Davis
patent: 3818523 (1974-06-01), Stillman, Jr.
patent: 3946685 (1976-03-01), Chadbourne et al.
patent: 3952349 (1976-04-01), Erath et al.
patent: 4031581 (1977-06-01), Baugh
Arbuckle F. M.
Blix Trygve M.
Bunker Ramo Corporation
Freilich A.
Sotelo Jesus D.
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