Importance

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Abstract

One embodiment of a propulsion system for omnidirectional maneuverability and efficient forward flight of an airship comprising only fixed, unidirectional engines (17, 19, 20). The thrust vectors of the fixed engines (19, 20) are oriented in a way that their speeds can be chosen such that all forces acting on the airship (i.e., engine thrusts, gravity, buoyancy, wind and potentially others) are together resulting in the desired motion. In one embodiment these are four ducted fans (17) at the bow and four ducted fans (19) at the stern of the aircraft. Their thrust vectors can be decomposed into three vectors of equal length that are each parallel to one of the three axis of a cartesian coordinate system like defined in FIG. 8. In one embodiment efficient forward flight is achieved by an additional engine (20) at the stern of the airship.

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First Claim