3rd Generation Avionics

The latest and greatest avionics for UAV/RPAS from the ESC aerospace R&D division.

The autopilot is designed as a modular system consisting of a UAV Control Unit and various sensors (GPS, gyroscope, accelerometers, altimeter) communicating through two independent CAN buses for high reliability. The data collected by various sensors is combined by a unique algorithm statistically evaluating validity of the data. Data from one particular sensor are merged with data obtained by another sensor based on sensor noise probability guess, which leads to more precise calculation of the UAV’s state. This topology benefits from using of redundant sensors that are working simultaneously without switching. When sensor malfunction occurs, only noise probability increases. Classical switching to backup device does not use all sensorsduring normal operation.

Features

The key feature of the autopilot is to stabilize the aircraft.
The considered variables are:

• direction (heading)
• horizontal speed
• altitude

 

The controlled variables are:

• control of the engine thrust
• aerodynamic control surfaces
• (roll, pitch and yaw)

The heading is controlled by a combination of deflection of the rudder (or elevators in case of the rudder-free airframes) and ailerons. The horizontal speed is controlled by adjustment to the engine thrust. The rate of climb to a given altitude is achieved by the application of a combination of elevator deflection and engine thrust.

Automatic Flight Control System

The Automatic Flight Control System (AFCS) – higher level intelligence of the autopilot – which accepts the commands from the operator (respectively GCS), calculates proper trajectory to target waypoint and instructs the other layer of the system to make appropriate corrections. It contains the memory to store mission (a list of waypoints and how to fly through them) and flight program able to react to unpredicted events.

 

 

Download datasheet in PDF:

3rd Generation Avionics datasheet