CGV-4 Series 4

Function of the CGV-4 attitude reference unit

The main function of CGV-4 Series 4 is continuous determination of aircraft attitude angles. The unit measures roll and pitch and issues corresponding electrical signals to aircraft consumers. These signals may be used by command flight director instruments, attitude indicators, navigation computers and automatic control systems. Since the CGV-4 is a central vertical reference unit, it is normally installed as part of the aircraft avionics system rather than as a standalone cockpit display.

Operating principle of CGV-4 Series 4

CGV-4 is built around two two-degree gyroscopes with mutually perpendicular precession axes. This arrangement allows the instrument to maintain a vertical reference and generate roll and pitch outputs for connected equipment. The system uses correction circuits to reduce drift and maintain vertical accuracy during flight. According to the source context, the unit can provide stable vertical reference in straight and level flight and on an oscillating base within specified limits.

Signal output and connected systems

CGV-4 Series 4 uses potentiometric signal output for roll and pitch channels, according to the source context. The output signals are transmitted to autopilot channels, attitude indication equipment, command flight director instruments and navigation computers. In aircraft installations, the unit may work with systems such as KPPM, AGD-type indication equipment or other onboard consumers depending on the aircraft configuration. Exact integration should be verified through the aircraft wiring and avionics documentation.

Power supply and operation of CGV-4

The CGV-4 Series 4 unit operates from standard Soviet / Russian aircraft power supplies. The source context indicates three-phase 36 V AC at 400 Hz and 27 V DC power. The AC supply is used for gyro motor operation, while DC circuits are associated with control, correction and signal functions depending on installation. After power-up, the gyros require a start-up period to reach operating speed and establish the vertical reference before the unit is ready for normal output.

Installation and ordering of CGV-4 Series 4

CGV-4 Series 4 is installed as an avionics unit in protected aircraft equipment areas using a mounting arrangement with shock isolation. The exact position depends on the aircraft type and system layout. When ordering, the buyer should confirm the precise series, aircraft application, condition, passport availability, repair certificate and test status. Since Series 4 / Series 04 may refer to a specific electrical and mechanical execution, substitution with another CGV-4 version should be checked against system documentation.