David So 1 Helicopter ?

[hesham]

Hi,

does anyone hear about this David So 1 helicopter before ?,I don't know it was
from which country ?.

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Riviste/Ala%20d'Italia/L'ALA%20D'ITALIA%201923%2003-04.pdf

 

[Armin Derer]

does anyone hear about this David So 1 helicopter before ?,I don't know it was from which country ?.

It was built by Italian engineer Giuseppe Somalvico (patent from 1917) and failed in 1921 during initial ground test.

The writing on the image is confusing insofar as the name is So 1 (for Somalvico) David and not the other way round, in which David in the lead suggests it may be the name of the designer. Which is what threw me off at first. Found it actually not via the name, but through a combination of elicoplano and idrovolante (= hydroplane).

Russian langage website: http://alternathistory.org.ua/gidro...a-20-kh-godov-s-vrashchayushchimisya-krylyami

 

[hesham]

Amazing find,thank you Armin.