Neutrally buoyant submerged system using greater density...

Details Neutrally buoyant submerged system using greater density... Neutrally buoyant submerged system using greater density...

2011-07-26

2011-07-26

Olson, Lars A (Department: 3617)

Ships

Submersible device

Having attitude control

C114S121000

Reexamination Certificate

active

07984685

ABSTRACT:
The system provides a means by which the attitude or orientation of a submerged object can be changed using a fixed quantity of transferable ballast fluid which has a density greater than that of the surrounding fluid in which the object is submerged. In one embodiment, the process utilizes a static flotation shell offset the net negative buoyancy of the transferable ballast fluid. In this way, the total overall buoyancy of the system does not change, but by transferring fluid into expandable reservoirs which are physically separated from the static flotation shell, the separation between the center of buoyancy and the center of mass of the object can be changed, and thus the attitude or orientation of the object, if it is unrestrained, may be changed.

REFERENCES:
patent: 2887977 (1959-05-01), Piry
patent: 3343511 (1967-09-01), Hinton et al.
patent: 3379156 (1968-04-01), Keays et al.
patent: 3437065 (1969-04-01), Robbins
patent: 4448145 (1984-05-01), Hervieu

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