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- Tetrahedral Kites by Alexander Graham Bell, 1898-1912
Posted by : SimoneGallina™
venerdì 9 dicembre 2011
Tetrahedral Kites by Alexander Graham Bell, 1898-1912:
‘In 1898, Bell experimented with tetrahedral box kites and wings constructed of multiple compound tetrahedral kites covered in silk. The tetrahedral wings were named Cygnet I, II and III, and were flown both unmanned and manned’
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