Patent ID: 8505847

Claim:
A lighter-than-air system comprising: an airship comprising a first balloon and a second balloon, the first balloon movable between a deflated configuration and an inflated configuration, the first balloon comprising a wall defining a first balloon chamber, the second balloon disposed within the first balloon chamber, the second balloon movable between a deflated configuration and an inflated configuration, the second balloon comprising a wall defining a second balloon chamber; and a thruster attached to the airship, the thruster comprising a thruster body and a container, the thruster body defining a cavity, a first passageway, and a second passageway, the container attached to the thruster body and comprising a wall defining a container chamber, wherein the cavity is in communication with the first balloon chamber, wherein the first passageway is in communication with the second balloon chamber, and wherein the second passageway is in communication with the container chamber.