Technical data
Type 11-EA
Function experimental
Year 1936
Crew 2
Engines 1*630hp "Conqueror"
Length 8.5m
Rotor diameter 15.4m
Height 3.5m
Wing Span 10.6m
Wing Area 11.3m2
Empty weight -
Flight weight 2600kg
Ceiling 40m
Minimum Speed -
Maximum Speed -
360° turn -
Takeoff roll -
Landing Roll 0m
Flight Duration -
Range -

11-EA by I.P.Bratukhin (TsAGI)

TsAGI 11-EA. 13k b/w photo from the "History of aircraft construction in the USSR" Vol.2, p.418

Experiments with 5-EA rotor allowed I.P.Bratukhin to build substantially bigger and heavier aircraft. The engine was housed in the front end of fuselage, together with cooling fan and radiator. Main rotor was same as on the 5-EA, but control rotors were placed on the wing (actually 11-EA had an appearance of a monoplane with helicopter rotor and two tractor propellers on the wing).

Controls included both for helicopter and airplane 'components' of the apparatus. Flown on the rope only, due to over-complicated control system.

One built.




Sources [6], Vol.2 p.419;

Modified March 24, 1997 Back to
Main Gate