Variable-buoyancy propulsion
http://dbpedia.org/resource/Variable-buoyancy_propulsion
In engineering, variable-buoyancy propulsion is the use of a buoyancy engine to provide propulsion for a vehicle. The concept was first explored in the 1960s for use with underwater gliders, but has since been applied to autonomous aircraft as well.
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Variable-buoyancy propulsion
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In engineering, variable-buoyancy propulsion is the use of a buoyancy engine to provide propulsion for a vehicle. The concept was first explored in the 1960s for use with underwater gliders, but has since been applied to autonomous aircraft as well.
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1926