The Stipa-Caproni was an experimental Italian aircraft designed in 1932 by
Luigi Stipa and built by Caproni. It featured a hollow, barrel-shaped
fuselage with the engine and propeller completely enclosed by the fuselage -
in essence, the whole fuselage was a single ducted fan. Although the Regia
Aeronautics was not interested in pursuing development of the Stipa-Caproni,
its design was an important step in the development of the Jet Engine