| Technical data | |
|---|---|
| Type | 11-EA |
| Function | experimental |
| Year | 1936 |
| Crew | 2 |
| Engines | 1*630hp "Conqueror" |
| Length | 8.5m |
| Rotor diameter | 15.4m 9.2m |
| 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)
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.
| Predecessors | Modifications |
|---|---|
 5-EA |
 11-EA-PV |
Sources [6], Vol.2 p.419;
