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The Stal-3 (Stal – steel) was a transport aircraft designed and built in the USSR from 1933.

Stal-3
Role	Transport Type of aircraft
National origin	USSR
Designer	A.I. Putilov
First flight	1933
Number built	79
Developed from	Stal-2

Development

The Stal-3 was an enlarged development of the Stal-2, designed at the OOS (Otdel Opytnogo Samolyetostroeniya - section for experimental aircraft construction), with a simplified structure which reduced manufacturing man-hours and structural weight, whilst increasing the design load factor. The layout of the aircraft was very similar to the Stal-2, but featured larger dimensions, slotted flaps, a wide chord engine cowling, slotted ailerons, and spatted wheels with brakes, or skis depending on season.

Flight testing began in 1933 with acceptable results, leading to a production order for 79. The Stal-3 was an important aircraft with the GVF / Aeroflot until 1941, continuing to give service on utility duties with Aeroflot and the Soviet Air Force.

Operators

 Mongolia

• Mongolian People's Aviation

 Soviet Union

• Aeroflot
• Soviet Air Force

Specifications (Stal-3)

Data from Gunston, Bill. "Encyclopaedia of Russian Aircraft 1875-1995". London:Osprey. 1995. ISBN 1-85532-405-9

General characteristics

• Crew: one/two
• Capacity: 6/7
• Length: 10.68 m (35 ft 0.5 in)
• Wingspan: 17.02 m (55 ft 10 in)
• Wing area: 34.8 m² (364.6 sq ft)
• Empty weight: 1,672 kg (3,686 lb)
• Gross weight: 2,817 kg (6,210 lb)
• Powerplant: 1 × M-22 , 358 kW (480 hp)

Performance

• Range: 940 km (584 mi, 507 nmi)
• Service ceiling: 5,340 m (17,250 ft)
• Rate of climb: 3.333 m/s (656.2 ft/min)

See also

Aircraft of comparable role, configuration, and era

• Ford-Stout 2AT
• Fokker F.VII

Related lists

• List of aircraft of World War II
• List of aircraft

References

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