were inflated with non-flammable helium. The Roma was designed by Celestino Usuelli [it], the engineers Eugenio Prassone, Umberto Nobile and Colonel Gaetano...
11 KB (1,136 words) - 07:17, 7 September 2024
stressed-skin airship Oskar Ursinus (1877–1952) – sailplane designer Celestino Usuelli [it] (1877–1926) – dirigible designer Sitaram Rao Valluri (1924–2019)...
54 KB (6,380 words) - 20:59, 13 July 2024
Triplane 1909 Ueda Hiryu-Go Biplane 1909 Usuelli U.1 airship (non-rigid airship designed by Celestino Usuelli) 1909 Vandenbergh Flapper (ornithopter like)...
103 KB (10,797 words) - 09:54, 31 August 2024