![]() ![]() The simulation modeling method is also the mainstream method for studying engineering problems in the world today, whether it is the image tracking of UAVs or on engine calibration and verification. At the same time, European and American countries have consistently attached importance to the simulation of aircraft functional hazards in the aircraft design and development phase, which has reduced design costs and shortened the design cycle, improved the intrinsic safety of the aircraft throughout its life cycle, and effectively reduced the probability of catastrophic accidents. The US military's fourth-generation warplanes, as well as aircraft design giants such as Boeing and Airbus that produce the B787 and A380, have undergone system safety design, and the safety design of European countries such as the UK, France, and Germany has basically referred to the US approach. Īt present, developed countries in Europe and the United States have adopted the idea of system safety design methods as the main approach in aircraft safety design, supplemented by methods based on virtual prototyping and virtual testing and evaluation of human-machine-loop complex systems. ![]() Ramus of the University of California, USA, has also studied “human-loop” systems. ![]() Baker, the University of Birmingham, UK, analyzed the impact of human factors and organizational behavior in aviation accidents. For example, research on cockpit resource management and reliability management began in the 1980s. In particular, the international civil aviation community has incorporated human factors engineering and other theories to strengthen the study of “human-machine” and “human-loop” systems. The accident mechanism analysis models such as 'Heinrich's theory, accident chain theory, 'Murphy's theorem, SHEL model, and human-machine loop theory in system safety engineering have been widely used in flight safety research. The US Army put forward safety systems engineering in the 1960s, with accidents as the main research subject, including safety analysis, safety measures and safety evaluation, and other major contents. Western countries have studied flight safety more extensively and meticulously and have conducted more in-depth research on the basic theory of flight safety, safety evaluation, and safety design. Finally, combined with the clauses in MIL-HDBK-516B, a case calculation is carried out to verify the feasibility of the proposed method. ![]() At the same time, in the terminal airworthiness verification, this paper proposes a repeatable and controllable virtual test flight verification method, which aims to reduce the cost and cycle of the terminal airworthiness verification and expand the coverage of the envelope verification. The purpose is to improve the objectivity and quantification of the FHA method in the safety design of aircraft systems. On the basis of the original aircraft system safety analysis method, this paper innovatively proposes a functional hazard analysis (FHA) method based on the analytic hierarchy process (AHP) and multifactor fuzzy comprehensive assessment (FCA). It cannot dynamically analyze the accident evolution process and lack consideration of the complex situation of multifactor coupling. However, there are still shortcomings in the reliability-based aircraft system safety analysis method. Throughout the world, the reliability-based approach to safety design of aircraft systems is quite mature and widely used. ![]()
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