APD-88 Series 4
Start Control Unit
Description
APD-88 Series 4 System Overview
The APD-88 Series 4 is an aircraft engine start automatic control unit designed as an electromechanical programmed device for automated control of engine start processes within onboard systems of helicopters and fixed-wing aircraft.
Full descriptionCollapse description
APD-88 Series 4 Control Function
The unit controls the sequence of activation and deactivation of engine start system components, including starter operation, fuel supply, ignition systems, and transition to normal engine operation, ensuring execution of the start cycle according to a predefined timing program.
APD-88 Series 4 Aircraft Application
The device is used on helicopters and aircraft equipped with turboprop and turboshaft engines, including platforms such as Mi-8 (Mi-17), Ka-32, An-24, and An-26, where it supports automated engine start procedures.
APD-88 Series 4 System Integration
The unit operates in conjunction with onboard engine systems and cockpit controls, using a cam-based programmed mechanism to generate control signals for ignition units, fuel valves, and starter contactors. The product is also known under alternative designations APD-88 Series 4 and АПД-88 серия 4.
Technical details
- Product Type
- Electromechanical programmed engine start control unit
- Function
- Automatic control of engine start sequence
- Application / Where Used
- Aircraft engine start systems
- System / Installation Area
- Engine start control system
- Compatible Aircraft / Equipment
- Mi-8 (Mi-17), Ka-32, An-24, An-26
All specificationsCollapse specifications
- Compatible Engines
- TV3-117; AI-24
- Operating Voltage
- 27 V DC
- Number of Programs
- Typically 2 (ground start; air start)
- Operating Modes
- Start; Rotation (without fuel and ignition)
- Cycle Duration
- Approximately 30–55 s
- Start Termination
- Automatic shutdown after completion of programmed cycle or unsuccessful start
- Control Functions
- Starter control; ignition activation; fuel valve control; switching to operating systems
- Programming Mechanism
- Camshaft with profile discs and microswitch actuation
- Drive Mechanism
- Electric motor with gearbox driving camshaft
- Construction Type
- Electromechanical programmed unit
- Interchangeability
- Series 4 differs from earlier series by adjusted timing parameters
- 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