METHOD OF CONTROLLING BUOYANCY OF UNDERWATER VEHICLE Russian patent published in 2014 - IPC B63G8/14 B63G8/22 

FIELD: physics.

SUBSTANCE: method of controlling buoyancy of an underwater vehicle includes filling buoyancy chambers with air, change in volume of which is achieved by feeding or releasing air from said chambers. When the underwater vehicle reaches a given depth, air is partially released from the buoyancy chambers and further change in depth of the underwater vehicle is achieved only by compressing or stretching the buoyancy chambers using an external mechanical action on the buoyancy chambers.

EFFECT: low consumption of compressed air during frequent immersion and emergence, which prolongs the time spent the underwater vehicle under water.

2 dwg