Felice Trojani collaborated with Umberto Nobile on which aircraft that was the first to reach the North Pole?
Aeronautica Umbra Trojani AUT.18 The AUT.18 was a prototype fighter aircraft developed in Italy by Aeronautica Umbra shortly before the outbreak of World War II. It was designed in 1934 by Ing Felice Trojani, who at that time was collaborating with Umberto Nobile on the Arctic flights of the airships "Norge" and "Italia". The aircraft's designation came from initials of the manufacturer, the surname of the designer, and the aircraft's wing area (18 m²), the sole prototype receiving the serial no. "M.M.363".
Savoia-Pomilio SP.3 The Savoia-Pomilio SP.3 was a reconnaissance and bomber aircraft built in Italy during the First World War. It was a further development of the family of designs that had started with the SP.1. Ultimately all of these took their basic configuration from the Farman MF.11: a biplane with twin tails and a fuselage nacelle that accommodated the crew and a pusher-mounted engine. However, since the preceding SP.2 had been found to be too slow and vulnerable in front-line service, the SP.3 was designed for higher performance. The new design had a reduced wingspan, lower weight, and the aerodynamics of the fuselage nacelle were improved. Some were also equipped with an improved version of the Fiat A.12 engine, with its power output increased from 190 kW to 220 kW (250 hp to 300 hp)