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Metal-clad airship : ウィキペディア英語版 | Metal-clad airship
Metal-clad airships are airships which have a very thin airtight metal envelope, rather than the usual fabric envelope. This shell may be either internally braced as with the designs of David Schwarz,〔Dooley A.193 (1893 airship never flew, but the 1897 flew at Berlin)〕 or monocoque as in the ZMC-2.〔NASGIVM. 2006. (NAS GROSSE ILE )〕 Only four ships of this type are known to have been built, and only two actually flew: Schwarz's aluminum ship of 1893〔Dooley, A.185-A.186 citing Robinson, pp2-3〕 collapsed on inflation; Schwarz's second airship〔 flew at Tempelhof, Berlin in 1897, landed but then collapsed; the ZMC-2 flew 752 flights between 1929 and scrapping in 1941; while the Slate ''City of Glendale'', was built in 1929 but never flew.〔National Air and Space Museum, Smithsonian Institution. 2008. (Slate Aircraft Corporation City of Glendale Negatives, Accession number 2006-0039 )〕 ==History==
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