BF-34 Batch A

BF-34 Filter Block Overview

The BF-34 (Batch A) is an aviation filter block used as part of automatic control systems in helicopters. The unit is designed as an electronic module that processes incoming signals from onboard sensors and ensures stable operation of control systems. It is installed in avionics compartments and operates under demanding flight conditions.

BF-34 Signal Processing Function

The BF-34 filter block performs filtering of input signals from sensors such as gyroscopes and stabilizes control signals in feedback circuits. It suppresses noise and structural oscillations, ensuring accurate transmission of signals to исполнительные механизмы автопилота and improving stability of automatic flight control systems.

BF-34 Aircraft Application

The unit is used in helicopters of the Mi-8/17/171/172 family and is part of the AP-34B automatic flight control system. It is installed in onboard avionics and participates in stabilization and control processes during flight, including режимы автоматического управления и стабилизации.

BF-34 Design and Configuration

The block is выполнен в металлическом корпусе и включает электронные фильтры и элементы согласования. It operates from onboard AC and DC power supply systems. The product is also known under designations BF-34, БФ-34, drawing number 6A3.390.000.

Product Type: Electronic filter block
Function: Signal filtering and stabilization in control systems
Application / Where Used: Helicopter automatic control systems (autopilot AP-34B)
Operating Voltage AC: 36 V (+18 / −3.6)
Power Consumption AC: not more than 0.1 A
Time Constant T1: not more than 0.025 s
Time Constant T2: not more than 0.03 s
Failure-Free Operation Time: not less than 0.05 h
Mean Time Between Failures: not more than 0.25 h
Weight: not more than 1.2 kg
Technical Documentation: BF-34 Passport

All shipments are carried out from our international warehouse in Dubai (UAE), as well as from our partners’ remote warehouses.

In Stock — items available in stock at the Dubai warehouse are dispatched within 5–10 business days after receiving 100% prepayment.

Remote Stock — items available at our partners’ remote warehouses are supplied within an average of 30–45 business days after receiving 100% prepayment.

Pre-Order — made-to-order products are manufactured and delivered within an average of 45–60 business days. Payment terms: 50% advance payment to start production, with the remaining 50% paid before dispatch from the Dubai warehouse after full readiness for shipment.

Returns & Changes (Restocking Fee)
For selected items, a RESTOCKING FEE of 10% may apply in case of return, order cancellation, or changes to the order specifications. This condition applies only to certain products and is confirmed at the order approval stage.

Warranty
All products are covered by a standard 6-month warranty.
Extended warranty is available upon request and is agreed individually; it may affect the final product price.