Pixhawk PX-4 Autopilot in Control of a Small Unmanned Airplane

The paper analyses the properties of the Pixhawk PX-4 autopilot used in unmanned aerial vehicle Skydog, while in the introduction describes motivation and reasons for a research and an analysis. Based on connections to external devices and knowing principle of communication between processes and applications, it is possible to create algorithms that would replace default control systems. The paper also contains a description of created algorithms for stabilization of aircraft model and a test that was made. The algorithms can be further improved and modified for usage in other aircrafts and can serve as platform for further developing.