Patent ID: 11952096
Assignee: IWAYA GIKEN INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. A method of reusing a lighter-than-air gas used for an aircraft that ascends under buoyancy generated by the lighter-than-air gas contained in an envelope of the aircraft, comprising:
a step of exhausting while the aircraft is in flight a portion of the lighter-than-air gas contained in the envelope and causing the aircraft to descend,
a step of collecting into a gas-collection container at least a portion of the lighter-than-air gas contained in the envelope by use of a gas suction device after the aircraft reaches a land or water surface,
a step of transporting the gas-collection container that contains the lighter-than-air gas collected from the envelope to a location where a liquefier is provided,
a step of liquefying by the liquefier at least a portion of the lighter-than-air gas contained in the gas-collection container and filling a storage tank with the lighter-than-air gas liquefied by the liquefier, and
a step of injecting at least a portion of the lighter-than-air gas from the storage tank into the envelope of the aircraft or into an envelope of another aircraft.