Technical data
Type Gakkel-VII
Function Experimental
Trainer
Year 1911
Crew 2
Engines 1*100hp Argus
Length 8.9m
Wingspan 9.9/11.5m
Wing area 40m2
Empty weight 560kg
Loaded weight 800kg
Wing Load (kg/m2) 20.0
Power load (kg/hp) 8.0
Speed (0m) 92km/h
Climb (500m) 9min
Flight time 3.5h

Gakkel-VII, Ya.M.Gakkel

Gakkel-7, 32k b/w photo from the "History of aircraft construction in the USSR" Vol.1, p.62

Gakkel-VI aircraft modified for participation in First Contest of Russian Military Airplanes (September 1, 1911). Wings were lowered, ailerons installed between the wings. Radiator installed below the engine, fuel tanks volume increased for 3.5-4hours of flight. Third (central) wheel was added to the landing gear.

The last modification became a significant one - Farman type competitors from Dux and Lebedev factories failed to perform landing on unprepared field, breaking landing gear each time they tried to fulfill contest requirements.

During the contest pilot G.V.Alekhnovich performed 200km flight (five times between Petersburg and Gatchina) with average speed 92km/h, and next day (September 24, 1911) 3.5hours flight in strong wind conditions.

Gakkel-VII was the only aircraft to fulfill all requirements of the contest. But by some twisted logic this fact (only one aircraft!) became a reason for annulling the results. Ya.M.Gakkel was practically forced to sell his airplane to the Military Department (for 8000 rubles) to gain some money for future designs.



References:
  • "History of aircraft construction in the USSR", Vol.1 p.61-62

  • Modified May 12, 1997 Back to
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