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LUFTSCHIFF
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Siemens automatic telephone systems in new LZ 130 Graf Zeppelin
Use of polyphase a-c electric motors for propulsion of large airplanes and airships
Feasibility Research on Traditional-Shape Stratospheric Airship
Mathematical modeling and implementation of the airship navigation
A low cost alternative for satellites- tethered ultra-high altitude balloons
3D off-line path planning for autonomous airships in restricted known environments