Technical data
Type Stal-2
Function Passenger
Year 1931
Crew 1
Engines 1*300hp Wright J6, M-26, MG-31
Length 9.7m
Height ?m
Wingspan 16.2m
Wing area 31.0m2
Empty weight 1030kg
Loaded weight 1800kg
Wing Load (kg/m2) 58.2
Power load (kg/hp) 6.0
Speed max. at 0m 200km/h
Cruising Speed 170km/h
Landing Speed 70km/h
Landing Roll 140m 12sec
Takeoff Roll 130m 11sec
Range 750km
Flight Endurance 5h
Practical Ceiling 5760m
Climb
1000m 4min
2000m 9min
3000m 16min
4000m 25min
Payload
Fuel 290kg
Cabin size LxWxH ?m3
Seats 4
Cargo ?kg

Stal-2 by A.I.Putilov

26k b/w picture, "History of aircraft construction in the USSR", Vol.1 p.469

High wing braced passenger monoplane. Cockpit and passenger cabins - enclosed, door at the port side of the fuselage. 'Stal-2' was built at OOS GVF as a result of wielding experiments with different steel alloys. Aircraft frame was formed by quite complex 3D structure of thin-wall wielded profiles of corrugated steel. Despite being very labour intensive and costly, such airframe was twice lighter than equivalent wooden or thick-wall tube structure, and aircraft normal payload 43% of takeoff weight.

13k drawing of the Stal-2 wing spar fragment, "History of aircraft construction in the USSR", Vol.1 p.470

Flight trials started on October 11, 1931, less than a year after the creation of OOS. No problems were revealed, and Stal-2 was put in production at just built aircraft factory N°81. Novelty of technology caused 'slow start', and series production started only in 1934 (87 aircraft).

Total 111 Stal-2 were built, all powered with 300hp Wright J6, M-26 or MG-31 engines. Stal-2 and its successor Stal-2 proved itself a good light passenger aircraft. One Stal-2 was equipped with landing flaps and designated Stal-2bis.

Production of Stal-2 was phased out in 1935 in favour of Stal-3.


PredecessorsModifications
? Stal-3

ReferencesLinks
  • "History of aircraft construction in the USSR", Vol.1 p.468...470;
  • TsGASA, f.29 op.13, d.1639
  • "Technica Vozdushnogo Flota" magazine, 1932, Vol.7 pp648...666;
  • "Technica Vozdushnogo Flota" magazine, 1933, Vol.4 pp37...49;
  • 'Samoliot' N°2 1934
  • ....
  • Created September 2, 1999 Back to
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