APD-75A
Start Control Unit
Description
APD-75A System Overview
The APD-75A is an electromechanical engine start automatic control unit designed for automated control of start processes of single-shaft gas turbine engines within aircraft and ground power installations. The unit functions as a programmed control device integrated into engine start system architecture.
Full descriptionCollapse description
APD-75A Control Function
The device controls the sequence of activation and deactivation of start system components, including starter-generator operation, ignition systems, and fuel supply, ensuring execution of the start cycle according to a predefined timing program and transition to normal engine operation.
APD-75A Aircraft and Ground Application
The unit is used in aviation and energy applications, including aircraft such as An-12, Il-18, and Il-38 equipped with AI-20 engines, as well as ground-based gas turbine power plants such as PAES-2500.
APD-75A System Integration
The control unit operates in conjunction with onboard or ground engine systems, using a cam-based programmed mechanism to generate control signals for ignition units, fuel valves, and starter systems. The product is also known under alternative designations APD-75A and АПД-75А.
Technical details
- Product Type
- Electromechanical programmed engine start control unit
- Function
- Automatic control of engine start sequence
- Application / Where Used
- Aircraft and ground gas turbine engine start systems
- System / Installation Area
- Engine start control system (AI-20; PAES-2500)
- Compatible Aircraft / Equipment
- An-12, Il-18, Il-38; PAES-2500 installations
All specificationsCollapse specifications
- Operating Voltage
- 27 V DC (24–30 V)
- Control Type
- Electromechanical (motor, gearbox, camshaft, contact groups)
- Cycle Duration
- Approximately 90 s
- Operating Sequence
- Starter-generator activation; ignition and fuel supply; shutdown of ignition; disconnection of starter; transition to idle
- Timing Stages
- Multi-stage programmed timing with fixed intervals for each operation
- Operating Temperature Range
- −60 to +60 °C
- Construction Type
- Cam-based programmed device with relay logic
- Mounting Type
- Panel or cabinet installation with vibration protection
- Interface
- Standard electrical connectors
- Weight
- Approximately 2.5–3 kg
- Modern Replacement
- Can be replaced by programmable electronic controllers with equivalent timing logic
- 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