PMK-21TV Series 2
Program Mechanism Unit
Description
PMK-21TV Series 2 System Overview
The PMK-21TV Series 2 is an aircraft electromechanical program mechanism designed for control of anti-icing systems within onboard equipment of helicopters and aircraft. The unit functions as a programmed switching device integrated into blade and airframe heating system architecture.
Full descriptionCollapse description
PMK-21TV Series 2 Control Function
The mechanism provides cyclic sequential switching of heating element groups in an impulse mode, ensuring controlled distribution of electrical power and preventing overload of the onboard electrical system during anti-icing operation.
PMK-21TV Series 2 Aircraft Application
The unit is used on helicopters and aircraft equipped with anti-icing systems, including Mi-8/Mi-17 helicopters and Il-76 aircraft, where it ensures protection of rotor blades and airframe elements against icing under adverse weather conditions.
PMK-21TV Series 2 System Integration
The mechanism operates in conjunction with onboard AC and DC power systems and anti-icing control units, using a programmed cam-based mechanism to distribute power between heating circuits. Series 2 represents an improved modification with enhanced reliability of switching elements. The product is also known under alternative designations PMK-21TV Series 2 and ПМК-21ТВ серия 2.
Technical details
- Product Type
- Electromechanical program mechanism
- Function
- Cyclic control of anti-icing heating elements
- Application / Where Used
- Aircraft and helicopter anti-icing systems
- System / Installation Area
- Rotor blade and airframe heating system
- Compatible Aircraft / Equipment
- Mi-8, Mi-17 helicopters; Il-76 aircraft
All specificationsCollapse specifications
- Operating Voltage (Control Circuit)
- 27 V DC (24–29.4 V)
- Operating Voltage (Power Switching)
- 208 V AC
- Frequency
- 400 Hz
- Current Consumption (DC Circuit)
- ≤ 1.5 A
- Control Principle
- Programmed cyclic switching (impulse mode)
- Cycle Duration
- Approximately 160–240 s
- Number of Heating Groups
- 4 or more groups (sequential switching)
- Heating Cycle per Group
- ~40 s ON / ~120 s OFF
- Operating Mode
- Continuous operation during icing conditions
- Operating Temperature Range
- −60 to +60 °C
- Weight
- Approximately 2.5–3.0 kg
- Construction Type
- Electromechanical cam-based program mechanism
- Series Features
- Improved contact system with increased switching reliability
- Technical Documentation
- Product passport and operational documentation
Payment & delivery
Orders ship from our hub in Dubai. Partner stock is first transferred to Dubai, then shipped to you.
Dubai stock: 100% before dispatch. Partner stock (Remote stock) and Pre-order: 50% advance payment to start the order and 50% before shipment from Dubai to you.
Availability, lead time, delivery cost and payment terms are confirmed for your order before payment.
Payment & delivery terms