GA-1M Series 2

GA-1M Series 2 gyroscopic unit for heading systems

GA-1M Series 2 is an aircraft gyroscopic unit used as a central component of Soviet and Russian onboard heading systems. The unit measures, stabilizes and maintains the aircraft heading reference by means of an internal gyroscope. It provides electrical signals proportional to aircraft heading for cockpit indicators, navigator equipment, pilot displays and autopilot systems. GA-1M Series 2 is used as part of navigation and flight-control equipment rather than as a standalone cockpit instrument.

Function of the GA-1M Series 2 gyro unit

The main function of GA-1M Series 2 is to preserve a stable heading direction in space and transmit heading information to aircraft consumers. The unit works as a directional gyro element inside a heading system. Its output can be used by navigator indicators, pilot heading displays, automatic flight-control equipment and related navigation systems. The unit supports aircraft course stabilization and helps maintain a reliable heading reference during flight.

GA-1M Series 2 in KS-6 and KS-8K heading systems

GA-1M Series 2 is most commonly associated with KS-6 and KS-8K heading systems. In these systems, it acts as the central gyroscopic assembly that generates the heading reference and supports electrical transmission of course data. The unit may also be used in navigation complexes installed on aircraft and helicopters depending on the avionics configuration. Actual compatibility must be checked against the aircraft equipment list, wiring diagrams and maintenance documentation.

Construction of the GA-1M gyroscopic unit

GA-1M Series 2 is a complex electromechanical unit. The source context describes its internal construction as including a high-speed gyro motor, rotating transformers, bearing assemblies and pendulum correction elements. The gyro rotor operates at high speed and creates the kinetic moment required to maintain directional stability. The unit is built in a cylindrical housing with a mounting flange and is normally installed with a shock-mounted frame or rigid base.

Installation of GA-1M Series 2 on aircraft

GA-1M Series 2 is installed in a defined aircraft equipment area, often near the aircraft center of gravity or on a special rigid frame. This placement reduces the influence of linear accelerations, vibration and structural oscillations on gyro performance. The unit is not normally mounted in the pilot cockpit because of its size, noise and technical service requirements. Access is usually provided through aircraft technical panels or equipment bay hatches.

Aircraft application and ordering of GA-1M Series 2

The source context indicates application of GA-1M Series 2 on Mi-8 family helicopters, An-24, An-26, An-30, Yak-40 and Il-76 aircraft, depending on system configuration. It may be used as part of KS-6, KS-8K or related heading systems. When ordering, the buyer should specify the exact series, aircraft type, heading system, condition, passport availability, repair status and test documentation. Interchangeability should be confirmed through aircraft and heading-system manuals.

Product Type: Gyroscopic unit / directional gyro assembly
Designation: GA-1M Series 2
Alternative Designations: GA-1M ser.2, GA-1M Series 2, ГА-1М серия 2, ГА-1М сер.2
Function: Measurement, stabilization and preservation of aircraft heading reference
System Role: Central gyroscopic unit in aircraft heading systems
Application / Where Used: Heading systems, navigation systems, pilot and navigator indication equipment, autopilot channels
Associated Systems: KS-6, KS-8K and related heading systems according to source context
Compatible Aircraft / Equipment: Mi-8 family, An-24, An-26, An-30, Yak-40, Il-76 and other aircraft depending on documentation
Output Data: Electrical signals proportional to aircraft heading
Internal Components: High-speed gyro motor, rotating transformers, bearing assemblies and pendulum correction elements, according to source context
Gyro Motor Reference: GUA-20, according to source context
Gyro Rotor Speed: 23,000 rpm, according to source context
Gyro Kinetic Moment: 1.96 N·m·s
Azimuth Drift / Error Reference: Not more than ±1° in 30 minutes in GA mode, according to source context
Readiness Time: Approximately 5 minutes
AC Power Supply: 36 V AC, 400 Hz, three-phase
DC Power Supply: 27 V DC
DC Circuits: Follow-up systems, correction potentiometers and relays, according to source context
Maximum Dimensions: 390 × 272 × 252 mm
Weight: Not more than 10 kg
Housing Form: Cylindrical body with mounting flange
Mounting: Special rigid frame or shock-mounted frame near aircraft center of gravity, depending on aircraft installation
Access Area: Technical bay, equipment compartment or service hatch area depending on aircraft type
Condition: New / As-Stored / Overhauled / Serviceable, depending on availability
Technical Documentation: Product passport, repair certificate, test report, storage records and heading-system documentation if available

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Warranty
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