Technical data
Type Omega, 2MG
Function experimental
Year 1941
Crew 1
Engines 2*220hp MV-6
Rotor diameter 2*7.0m
Length 8.2m
Width (with rotors)14.2m
Empty weight 1760kg
Loaded weight 2050kg
Rotor (disk) load 26.7
Power load (kg/hp) 4.6
Maximum Speed 186km/h
Static Ceiling 290m
Dynamic Ceiling 700m
Range 250km
Seats 1

Omega / 2MG, by OKB-3 MAI, I.P.Bratukhin

24k b/w photo from the "History of aircraft construction in the USSR", Vol.2 p.436

When the WWII started, all helicopter related jobs were concentrated in single OKB-3 headed by Ivan Pavlovich Bratukhin.

The "Omega" helicopter was the first product of this bureau. It was two-rotor helicopter of transversal design. Each rotor was driven by separate MV-6 engine linked with synchronizing shaft. This shaft provided also opportunity to fly helicopter with any one of engines running. Unlike primitive powerplants of earlier helicopters (see 1-EA and more on the TsAGI list), engines of "Omega" were equipped with specially designed gearboxes, clutch and other elements typical for modern helicopters.

Fuselage had metal (wielded steel tubes) frame with fabric cover. Airplane type T-shaped tail was used for flight control together with main rotors (also fully instrumented).

Project was approved on June 27, 1940. Aircraft was finished in August 1941, and flight tests began (first - on the tie). Evacuation of the OKB-3 interrupted works on the "Omega" for 1 year. Only in 1943 flight tests started again (pilot K.I.Ponomarev). Tests included takeoffs, landings, 360° turns while hovering, straight flight and sharp turns. Also was tested (on purpose) ability of the helicopter to 'glide' safely with engines shot down, using effect of autorotation.

Modifications: Omega-II

Sources [6], Vol.2 p.434;

Modified March 28, 1997 Back to
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