Unmanned aircraft automatic flight control algorithm in a spin maneuver

Abstract

PurposeThe paper aims to present an idea of automatic control algorithms dedicated to both small manned and unmanned aircraft, capable to perform spin maneuver automatically. This is a case of maneuver far away from so-called standard flight. The character of this maneuver and the range of aircraft flight parameters changes restrict application of standard control algorithms. Possibility of acquisition full information about aircraft flight parameters is limited as well in such cases. This paper analyses an alternative solution that can be applied in some specific cases.Design/methodology/approachThe paper uses theoretical discussion and breakdowns to create basics for development of structures of control algorithms. Simplified analytical approach was applied to tune regulators. Results of research were verified in series of software-in-the loop, computer simulations.FindingsThe structure of the control system enabling aerobatic flight (spin flight as example selected) was found and the method how to tune regulators was presented as well.Practical implicationsIt could be a fundament for autopilots working in non-conventional flight states and aircraft automatic recovery systems.Originality/valueThe paper presents author’s original approach to aircraft automatic control when high control precision is not the priority, and not all flight parameters can be precisely measured.