Technical features of airship ZEPPELIN-P1
It can be compared to air models.
Dimensions: lenght 11,5 mt - diameter 3,00 mt.
In-flight weight: approximately 1.5 kg.
Radio-controlled at sight.
Envelope filled with helium, inert and therefore non-inflammable and absolutely harmless gas.
Max speed:50 Km/h.
Electrical propulsion, therefore silent and eco-friendly. Propulsion propellers are completely  wrapped in a pipe, so that safety during their rotation is guaranteed.