| | ŕ dello sviluppo tecnologico che deve tornare a essere sostenibile e compatibile con ... air by alberto bassi we are so used to jet flights that we find it hard to ... and mentally go back through time to the first half of the past century when ... for brief periods winning alternatives to the airplane for example the sea-planes ... as several manufacturers continue to produce them and they may occasionally ... are many elements of interest connected to blimps lighter than air as they were ... defined in contrast to the heavier airplanes composed of a ... that recur throughout its history starting with ferdinand von zeppelin whose name ... synonymous of this type of aircraft to the relevance of a design philosophy ... in horizontal and vertical planes to control direction and altitude ...
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