The SM.91 is a multi-role twin-boom fighter developed by Savoia-Marchetti. In 1941, the Italian Ministry of Aviation announced a competition for a multi-role fighter capable of being used as an escort fighter, fighter-bomber, assault and high-speed reconnaissance aircraft. The competition was attended by Caproni Aeronautica Bergamasca with the Ca-380 Corsaro fighter and Savoia-Marchetti with the SM.91 and SM.92 fighters. When developing the SM.91 fighter, the SM.88 high-speed bomber project was used.
Twelve-cylinder liquid-cooled engines Alfa Romeo RA-1050 RC.58 Tifone (licensed copy of German Daimler-Benz DB 605A-1) were installed as a power plant. The aircraft had powerful armament - five 20 mm Mauser MG 151/20 cannons and could carry four 100 or 160 kilogram bombs or one 500 kilogram bombs. The first flight of the prototype took place on March 10, 1943. Tests of the aircraft continued until September 1943. After the Allied landing in Italy, the plane was requisitioned by the Luftwaffe and sent to the research center in Reuchlin. The further fate of the aircraft is unknown. The second copy of the aircraft was ready in July 1944. It was tested, however, on December 27, 1944, as a result of a raid on an aircraft factory by American bombers, and this instance was lost.
|Wing span, m
|Wing area, m²
| 2 × PE Alfa Romeo RA-1050 RC.58 Tifone (DB 605A-1), hp
||2 × 1,475
|Weights and loads, kg:|
|Maximum speed, km/h
|Cruising speed, km/h
|Rate of climb, m/min
|Service range, km
|Service ceiling, m
Armament. Five 20 mm Mauser MG 151/20 cannons (300 rounds per gun), bomb load - four 100 or 160 kilogram bombs or one 500 kilogram
- Savoia Marchetti SM.91 /Gruppo Modellistico Sestese. Giorgio Dorati/
- Savoia Marchetti SM.91 /Aerei Italiani - Scheda Tecnica/