FIELD: aviation. SUBSTANCE: device includes electric motor whose stator 5 is immovable and rotor 7 (on permanent magnet or asynchronous) is secured on shaft 2 of turboengine and is connected with gear wheel 8 thrown into engagement with toothed sectors 9 connected with support of each blade 1; device is also provided with unit for interlocking support 4 of blades 1 mounted by means of electromechanical drive 13 which is connected with shaft 2 and supplied with power through rotary transformer 25. EFFECT: enhanced reliability. 14 cl, 10 dwg
