Luigi Stipa conceived this experimental Italian aircraft concept. Stipa partnered with Caproni who constructed it. This aircraft has been called the Flying Barrel because of the shape of its body. A entire body converted into a duct fan. In 1932, the Stipa-Caproni lifted off the ground for the first time. The aircraft flew, but not optimally. Its design created aerodynamic drag that hindered engine efficiency. The Italian Royal Air Force rejected continued development of the Stipa-Caproni. The Flying Barrel wasn’t a complete failure. The Stipa-Caproni’s design furthered the development of jet propulsion, reaction engines that quickly discharge fluid to thrust forward.