Validation Activities for Flight Control Law Monitors

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Validation Activities for Flight Control Law Monitors

Hübener, D. / Arnold, A. / Luckner, R. / Weber, G.

Electronic flight control systems are safety-critical and complex systems requiring highest levels of integrity and availability. This is why the development process for the embedded flight control laws has to ensure rigorous validation and verification. However, the complete absence of development errors cannot be guaranteed. Usually, there is one requirement set from which flight control laws software is developed. Accordingly, undetected errors in the flight control law requirements represent a potential single point of failure. Means to mitigate the effects of such errors are addressed by a current project on the investigation of flight control law monitors that the European Union Aviation Safety Agency has launched in 2022. One possible approach is to develop independent flight control law monitoring functions. This paper proposes potential Independent Monitoring Functions and validates their feasibility using a simulation environment with a flight mechanical model and flight control laws for manual flight of a commercial aircraft.