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The Parsevals were 22 airships built between 1909 and 1919 by the Luft-Fahrzeug-Gesellschaft (LFG) following the design of August von Parseval. In the 1920s and 1930s, three more airships were built following the Parseval-Naatz (PN) design. As with the rival Zeppelins, the airships were, in both English and German, referred to by the name of the inventor. (In German the nouns were masculine, that is, "''der Parseval''", "''der Zeppelin''".) In contrast to the Zeppelins, the Parsevals were non-rigid or semi-rigid airships, with little or no stiffening structure inside the fabric envelope. The Zeppelins had a rigid internal framework made of duralumin. Both types relied on hydrogen gas to provide lift. ==Experimental airship== The ''Versuchsluftschiff'' (meaning experimental airship) was Parseval's first model. It was rebuilt several times. *First flight on 26 May 1906 at Berlin's Tegel, a military field *Pilot: Captain von Krogh *Length: 48 m, Diameter: 4.8 m *Power plant: 62 kW (85 PS) Daimler-Motor *Max speed: 43.2 km/h *The hull was completed by the balloon constructer Riedinger and was later increased from 2300 to 2800 cubic metre, the length increased to 50 m *After all the modifications were completed, from 1909 it was designated "PL 1". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Parseval airships」の詳細全文を読む スポンサード リンク
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