Features modern ACS TVGTD
Features modern ACS TVGTD

Features modern ACS TVGTD



Given these requirements, the functions of modern TVGTD ACS, the main ones are:


- Stabilization of the free turbine speed when changing the power consumed by the main and tail rotor limited casting failures and rotor speed within specified limits (program)

- Synchronization modes of the two motors

- Direct restriction limiting parameters workflow engine;

- The protection of the free turbine of the promotion, liquidation and restoration of the surge of engine flameout;

- Fixation failure of one engine and restructuring constraints limit parameters of another engine for the emergency operation;

- Optimization of rotor speed on the flight conditions and loading of the helicopter;

- Detection and compensation of failures in the control system.


Program Control helicopter turbine engine and the characteristics of ACS management programs similar to the gas generator of the turboprop.

Computing power of modern digital electronic automatic control system allow you to implement the necessary set of control algorithms, control and diagnostics of technical condition of the engine. The focus of the development of digital FADEC type ACS is paid to the reliability of the system and, above all, safe operation of the engine.


Currently, the following variants of the ACS TVGTD:

- Single-channel digital electronic systems with advanced hydro-mechanical part, which in case of failure of the electronic control ensures that the maximum power of the engine;

- Two-channel digital electronic system with a simplified hydraulic mechanical backup system, which is at work in case of failure of the electronic controller may reduce engine power to 15%. 20%. The system of protection of the free turbine of the promotion runs standalone hardware.


The main features of Advanced SAU TVGTD FADEC type are:

- The application instead of the hydromechanical backup regulator third simplified electronic channels;

- The use of autonomous systems of protection from the promotion of the motor rotor;

- Use as actuators stepper motors which provide a record mode of the engine in case of failure of the electronic controller;

- The integration of hardware systems and the control of a technical condition of the engine;

- The use of electronic meters of torque (twisting) moment, torsion bar which is built into the engine;

- The use of stand-alone power generators to power the electronic components of ACS;

- Duplication of the main parameters of the engine sensors and actuators of the electronic system.


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