Airship launch from a cargo airship with a payload return vehicle

摘要

A method for launch of an airship includes connecting a cargo airship to a second airship that is not positively buoyant at the launch site, launching the cargo airship, transferring lifting gas from the cargo airship to the second airship where said lifting gas is carried by the cargo airship while aloft; and releasing the second airship from the cargo airship. A releasable payload return vehicle, wherein the payload return vehicle generates aerodynamic forces while it is mated to the cargo airship.