Safety risk assessment of navigation and flight control computer system of unmanned aerial vehicle

Abstract

The article deals with the problem solution of reducing of safety risk level of the navigation and flight control computer system (NAFCCS) of unmanned aerial vehicle (UAV) owing to well-grounded reliability increasing of the NAFCCS critical components. The problem solution lies in development of methods (technique) of calculation of NAFCCS safety risk level, namely probabilities of catastrophic failure occurrence, without Fault Tree Evaluation. The technique allows solving the problems of reducing of safety risk level of the NAFCCS on the systems engineering design stage. The offered technique includes new mathematical models of NAFCCS subsystems with detail presentation of the of critical fault state.