Air vehicle with a controlled buoyancy lifting system and method thereof
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United States of America Patent
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Oct 26, 2021
Grant Date -
N/A
app pub date -
Sep 4, 2018
filing date -
Sep 4, 2018
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Abstract
An air vehicle comprises a payload vessel, a propulsion system, and a buoyancy lifting unit anchored on said payload vessel. The buoyancy lifting unit comprises a plurality of balloons and a plurality of buoyancy gas reservoirs arranged in horizontal rows and vertical columns, a protractible rod, and a control system. Each of the balloons and buoyancy gas reservoirs is tethered to a lifting-joint on the protractible rod through a cable. The control system controls vertical move of the air vehicle to ascend through directing buoyancy gas flow from the buoyancy gas reservoirs into the balloons, and to descend through directing buoyancy gas flow from the balloons into the buoyancy gas reservoirs. The propulsion system controls horizontal move of the air vehicle to go forward and make turns.
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