ЭПЗ-77M – the electromechanical system in composition:
THE ELECTRIC MOTOR - brushless d.c. motor ДБ100-3700-8M, 1ДБ100-3700-8М;
THE ROTARY ELECTROMECHANISM -two-motors with summation of rotation frequencies МВ25Д2СМ (МВ25Д2СМ-1);
THE CONTROL SYSTEM - three-networks, digital, digital connecting networks;
THE CONTROL DEVICE - commutator of brushless d.c. motor КВД-30-270М,
sensor unit and limit switches БДКВ-12Т.
ЭПЗ-77M is used for control by transport airplane АН-70 flaps on conditions take-off and landing.
§ Displacement of flaps:
- In corresponding to signal from control handle position with automatic regulation of electric drive parameters,
- From switches of emergency control by failure of basic operating condition,
- By supply from accumulators in case of alternating current source failure,
- From one canal electric drive in any condition in case when second canal has refused,
- From handle drive of rotary mechanism by regulation on land.
§ Built-in automatic check of electric drive state in flight and on land,
§ Fixation of mechanism shaft by standing brakes of motors.
Basic technical characteristics
Output power, kW
Three-phase alternating current
Relative efficiency, %
By counteracting moment
By helping moment
Actuating electric mechanism