Functional hazards assessment of an integrated flight control system validation using model-based design

Abstract

Functional Hazard Assessment is the beginning of the work on the system safety assessment and it directly affects the design, safety and final cost of the project. Errors in the Functional Hazard Assessment can lead to insufficient system safety or unreasonably expensive development. The main purpose of the work is to introduce the Functional Hazard Assessment validation process which minimizes the risk of incorrect development of MC-21 aircraft Flight Control System. To achieve this goal, Model-Based Design methods are used as validation methods. The time benefit in detecting and isolating errors in algorithms and software with the help of the Model-Based Design is shown. Integrated Flight Control System which includes fly-by-wire control system and automatic flight control system of the Irkut’s airliner MC-21 safety requirements validation process using means of Model-Based Design is considered. As a result of the work, Integrated Flight Control System models were adapted for assessing functional hazards, and a user interface was developed for the flight crew to participate in the simulation of the failures.