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Applicant:
Indian Institute of Technology (IIT) Patna 
Title:
A sytem and method for controlling the buoyancy of an underwater submersible 
Inventor(s):
Dr. Rishi Raj, Dr. Atul D. Thakur, Mr. Sumit Banerjee, Mr. Udayan Pandey 
Application type:
Applied - 2018-07-30 
Application Number:
201831028588 
Applied at:
India 
Entered by:
Indian Institute of Technology (IIT) Patna 
Abstract:
The present invention relates to a system and method for controlling the buoyancy of an underwater submersible. Accordingly, a novel buoyancy control system for controlling the buoyancy of an underwater submersible, comprising of a housing configured to enclose a controller and a power source. A swim bladder having a flexible membrane covering an upper end, attached to an upper portion of said housing through a lower end, characterized in that a heater is positioned inside the swim bladder containing a fluid. The controller is configured to actuate in which the power source supplies power to the heater to cause liquid to vapour phase transition of the fluid. The submersible is configured to ascend on heating during which the phase transition is from fluid phase to vapour phase, and to descend on cooling during which the phase transition is from vapour phase to fluid phase, such that by varying the power supplied to the heater the buoyancy of an underwater submersible is controlled  

 
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