The scope of this field is very broad. The common factor in all the applications is the control unit for controlling, monitoring or only for the indication of a certain system, engine, assembly, etc.
The examples of applications are the control of auxiliary power units running, starting and monitoring of aircraft engine parameters, power supplies, control of heating systems and air conditioning on the aircraft, etc. The units work very often with a high number of sensors and power elements. In the case of processor versions, the units are equipped with certified software.
The system of limiters of M601 engine parameters on the L410 M aircraft or on the L410 UVP aircraft, which was extensively modified long-term, it is historically the oldest one. In general, the M601 engine is equipped with the system of limiters of limiting parameters that prevents from exceeding the allowed parameters. The system visually informs when exceeding the allowed values of torque, generator speed, propeller speed and inter-turbine temperature, subsequently the system intervenes and limits the actual values.
Starting and Limiting Unit of GE H80 engine
Starting and Limiting Unit of GE H80 engine
Possibility of testing individual functional circuits
The starting and limiting unit of the GE H80 engine, the so-called SALM 601 unit, monitors the following parameters: generator speed, propeller speed, inter-turbine temperature of gases, rate of temperature increase of gases and shaft torque. Exceeding any of the monitored parameters is indicated and its limiting is subsequently initiated. The evaluation of limiting temperature of gases is part of the limiter of engine parameters. The unit includes an option of testing individual functional circuits of the device for engine start-up and control.
Technical Condition Monitoring of Engine
Technical Condition Monitoring of Engine
Enhanced safety of operation and reliability of M601 engines
The ELMS601 system (Engine Load Monitoring System) serves for monitoring the technical condition of the M601 engine with the aim to enhance the safety of operation and reliability of M 601 engines and reduce the costs of their operation and maintenance. The system was designed for the L410 aircraft. The unit comprises the set of technical and software for monitoring and evaluation of the M601 engine workload. The system carries out the calculation of the time until the end of service life of the monitored components of the M601 engine. The monitored parts of the engine are for example: axial compressor drum, radial compressor wheel, main shaft, splash ring, disk of generator turbine, rear shaft, disk of free turbine, etc. The system is composed of the recording unit RELMU 601 and the display PELMU 601 – it allows reading and displaying the data from the RELMU 601 and also its control.
Power Supply Control System
Power Supply Control System
Checking electrical current on the heating elements of the aircraft
The system of aircraft power supply checking serves for checking the electrical current in the heating systems of the aircraft. In the case of an interruption or a drop of electrical current, warning signals are generated on the outputs of the electronics bank.
Auxiliary Power Unit Control System
Auxiliary Power Unit Control System
Signals needed for starting cycle control and APU running
The control unit is part of the control system of the auxiliary power unit (APU), turbine engine which serves as a source of compressed air for starting the main engine of the aircraft or a rotational source of electrical energy. The control box generates the signals necessary for controlling the starting cycle and running of the auxiliary power unit.
- System for Fuel Filling and Measurement
- Control Systems for Aircraft De-icing
- Heating Systems
- Control Units for Controlling and Monitoring of Assemblies
- Instruments for Measurement of Physical Values
- VHF/UHF Transceivers, Antennas
- Power Converters
