US Patent 7500637 Airship with lifting gas cell system

An airship with a lifting gas cell system comprises an airship that contains a plurality of partitions and a plurality of diaphragms, wherein the partitions and diaphragms are configured to form a number of gas cells that contain a lifting gas such as helium, and a single air cell that contains air. As a result, during the ascent and descent of the airship the number of gas cells ensures that the lifting gas is uniformly distributed over the entire length of the airship, whereas the air cell allows a large amount of air to be retained during a descent.