Savoia-Marchetti SM.62
| Industry | Aerospace |
|---|---|
| Founded | 1920s |
| Headquarters | Italy |
| Products | Aircraft, including SM.62 flying boat |
The Savoia-Marchetti SM.62 was an Italian single-engine maritime patrol flying boat introduced in 1926. It operated within the Regia Aeronautica and several international air forces, with production also taking place in Spain and the Soviet Union. A number of these aircraft remained active during the Spanish Civil War.
Design and development
The SM.62 flying boat marked a significant achievement for Savoia-Marchetti, evolving from the earlier SM.59 model that first took to the skies in 1925.
This wooden biplane featured a single-engine mounted between its upper and lower wings on a single-spar structure. It was powered by an Isotta Fraschini Asso 500 R.I. engine delivering 373 kW (500 hp), which drove a pusher propeller. The aircraft had a wingspan of 15.5 m (51 ft) and could reach a maximum takeoff weight of 3,000 kg (6,600 lb), accommodating fuel, armament, and a crew of four. Production commenced in 1926.
Armament included two machine guns positioned at the front and rear of the fuselage in exposed mounts. Although there were considerations to equip it with an Oerlikon 20 mm cannon, this upgrade was never implemented operationally.
Development proceeded steadily, leading to the introduction of the SM.62bis variant in 1927, which featured a more powerful engine and an increased wingspan of 16 m (52 ft). This model laid the groundwork for the future SM.78. The upgraded powerplant was an Isotta Fraschini Asso 750 engine producing 559 kW (750 hp), representing a 50% increase in power output. Consequently, the maximum takeoff weight rose to 4,000 kg (8,800 lb), with a top speed of 220 km/h (140 mph; 120 kn) and a range of approximately 1,200 km (750 mi; 650 nmi)—impressive capabilities for a single-engine aircraft of that era.
The SM.62 was among Italy’s pioneering aircraft in competitive racing and world record attempts. It participated in events such as the 1926 New York to Buenos Aires air race and a 10,000 km (6,200 mi; 5,400 nmi) competition across northern Europe. It also established several speed records: averaging 190.537 km/h (118.394 mph; 102.882 kn) over 500 km (310 mi; 270 nmi) in 1926, later improved to 194.237 km/h (120.693 mph; 104.880 kn), as well as world records for flying 500 km (310 mi; 270 nmi) carrying 500 kg (1,100 lb), plus records over 100 km (60 mi) and 500 km (310 mi; 270 nmi) with a load of 1,000 kg (2,200 lb).
Internationally, the SM.62 became Italy's most successful flying boat export. Japan acquired at least one unit for its naval aviation forces, while Romania purchased several examples, and Spain received 40 units, some produced under license. The Soviet Union also secured licensing rights to manufacture the SM.62bis at their Taganrog facilities, where it was designated as the MBR-4, resulting in numerous units being built.
Romania obtained a license for local production of the SM.62bis at the IAR plant in Brașov, producing five units in 1936.[1][2][3]
Despite becoming outdated by later standards, several Spanish SM.62s remained active during the Spanish Civil War. Given their moderate speeds relative to contemporary aircraft, some were utilized at Italy’s Desenzano "high-speed flying school" and continued fulfilling reconnaissance and bombing missions. The subsequent SM.78 derivative featured over one ton additional weight and approximately 20% more engine power; it could carry substantially more fuel—doubling its operational range—and achieved slightly higher speeds compared to the SM.62bis.
Variants
- SM.62
- Introduced in 1926.
- SM.62P
- Designed for civilian use.
- SM.62bis
- Released in 1927, equipped with a 559 kW (750 hp) Isotta Fraschini Asso 750 W-18 engine.
- SM.62ter
- MBR-4
- The Soviet-built version of the SM.62bis, manufactured in Taganrog.
Operators
- Royal Romanian Naval Aviation (operated 11 aircraft)
.svg){kind=link}
- Spanish Air Force – Utilized after the civil war.
Specifications (SM.62)
See also
References
- ↑ Mark Axworthy, London: Arms and Armour, 1995, Third Axis, Fourth Ally: Romanian Armed Forces in the European War, 1941–1945, p. 272
- ↑ Francesco Sorge, Giuseppe Genchi, Essays on the History of Mechanical Engineering, Springer, 2015, p. 144
- ↑ Anthony Robinson, The Illustrated encyclopedia of aviation, Volume 11, Marshall Cavendish Corp., 1979
- ↑ Stroud 1966, p. 439.
- ↑ Lua error in Module:Citation/CS1/Configuration at line 2123: attempt to index field '?' (a nil value).
- ↑ Letectví + Kosmonautika 1995 no. 20, p. 1635.
Bibliography
- Lua error in Module:Citation/CS1/Configuration at line 2123: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2123: attempt to index field '?' (a nil value).
- Lua error in Module:Citation/CS1/Configuration at line 2123: attempt to index field '?' (a nil value).
Further reading
- Lembo, Daniele SM.78, Storia Militare N.19, Westward editions, pp. 43–49.
Lua error in mw.title.lua at line 359: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal'). Template:Savoia-Marchetti aircraft Template:Soviet scout designations