Technical data
Type SAM-9 'Strela'
Function Experimental
Year 1937
Crew 1
Engine Renault-4
Power at 0m 140hp
Length 6.15m
Height ?m
Wingspan 3.55m
Wing area 13.0m2
Empty weight 470kg
Loaded weight 630kg
Wing Load (kg/m2) 48.5
Power load (kg/hp) 4.5
Speed at 0m 310km/h
Landing Speed 102km/h
Landing Roll 100m
Takeoff Roll 200m
Range ?km
Ceiling 1500m
1000m ?min
Fuel+Oil 60+10kg

SAM-9 'Strela' by A.S.Moskalev

12k b/w "History of aircraft construction in the USSR", Vol.2 p.107

As mentioned in the story of the SAM-4 project, interest to Moskalev's 'Sigma' concept was galvanized in 1936 by 'American Factor'. GUAP ordered light prototype-analog of the 'Sigma' interceptor!

This project under designation 'Strela' ('Arrow') SAM-9 was done in 3 (three) days. No wonder - it was thought about for many years, and was actually pre-stored ready in designer's drawer. It took 70 days to built small plane. In meantime additional wind tunnel tests of the mockup were performed by V.P.Gorsky at TsAGI. All looked fine, and during Spring 1937 trial program started. 'Strela' was installed on skis, later - on wheels.

First (factory) trials, including taxi and six 'hoops' were performed by pilot A.N.Gousarov at Voronezh. Results were promising, and aircraft was transported to TsAGI. There SAM-9 controls were handed over to young test-pilot N.S.Rybko (later - Hero of The Soviet Union). Result of the first flight was shocking - aircraft refused to climb above 20m!

Fortunately, problem was not in the plane. Standard pilot training program recomended to keep attack angle in range 8° to 10° during initial climb. This was fine for conventional airplanes, but for 'Strela' with its low aspect ratio wing it had to be at least 22°! Once this was figured out, small weird-looking prototype was brought to 1500m by N.S.Rybko.

12k and 13k b/w drawings "History of aircraft construction in the USSR" Vol.2 p.107

Conclusion of trials was positive, and NKAP ordered Moskalev to develope a project of interceptor with 0.975 wing aspect ratio. Designer at the time was occupied with more conventional projects, and PM-1 (SAM-19) was project was ready only in 1944, in evacuation.


SAM-4 'Sigma'
SAM-29 'PM-1'
  • "History of aircraft construction in the USSR", Vol.2 p.106...108;
  • "Samolioty SAM" ("SAM aircraft") by L.Polukratov, "Modelist-Konstructor" N°11, 1979;
  • Links
  • "Strela" (Slovak)
  • Photos
  • Unicraft model...
  • Fsim
  • Golden Age Aircraft Singles

  • Created October 27, 1999
    with help of Neven Novak
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