MPK-5A

Function of MPK-5A in aircraft systems

The main function of MPK-5A is remote actuation of onboard pipeline fittings and air-system components. The mechanism can operate fuel valves, hydraulic distribution valves, pneumatic valves and air dampers in aircraft service systems. It may be used where direct manual access is difficult or where the valve must respond to cockpit commands or automatic system logic. The actuator rotates in both directions, allowing the connected device to move between open, closed or intermediate positions depending on the installation.

Limited-angle output shaft operation

MPK-5A has an output shaft with a limited angular travel range. According to the supplied context, the shaft travel is set by rigid external stops on the controlled object and may range from 30° to 180°. The mechanism includes a friction torque-limiting clutch, which protects the reducer and connected valve or damper when the end position is reached or when the controlled element jams. This arrangement allows the drive to work with different types of valves and dampers while reducing the risk of mechanical overload.

Aircraft installation areas of MPK-5A

In aircraft use, MPK-5A may be installed directly on fuel, hydraulic, pneumatic or air-conditioning system components. The supplied context associates the mechanism with Tu-154, Tu-22 / Tu-22M, An-12 and some heavy helicopter systems, depending on documentation. Typical installation zones include engine nacelles, wing and stabilizer technical compartments, hydraulic bays and fuselage equipment areas. On aircraft air systems, it may drive hot-air shut-off or regulating valves connected with ventilation, cabin air conditioning and anti-icing circuits.

Related equipment and control elements

MPK-5A works together with rotary valves, air dampers, shut-off valves, hard mechanical stops, cockpit switches, relays, contactors and aircraft DC power circuits. In some non-aviation applications, the mechanism is also used as a rotary drive for light directional antennas, with added feedback devices such as potentiometers or encoders. For aircraft installation, the main concern is compatibility with the valve shaft, mounting flange, connector wiring, control switch logic and system end-stop requirements.

Identification and ordering of MPK-5A

Before ordering MPK-5A, the buyer should confirm the aircraft type, installation system, required output shaft travel, shaft connection, connector type, condition and documentation set. It is also important to clarify whether the unit is required for aircraft use, industrial equipment or a non-aviation rotary drive application. For aviation supply, the product passport, year of manufacture, storage condition, inspection data and test records should be checked before shipment. Shaft rotation, clutch operation, current consumption and travel time are important acceptance points.

Related equipment: MPK-13A-5 Series 2, MPK-13I-5, MPK-15-5 Series 2. These links are grouped by function and system context and do not indicate interchangeability.