基于IDAC-STPA模型的战机飞行安全性分析与评价

针对战机飞行安全性分析不全面且缺少定量评价的问题,提出了一种新的飞行安全性分析和评价方法。首先,危险分析技术(system theoretic process analysis,STPA)可以从系统的角度分析影响战机飞行安全的风险源,基于人为可靠性动态分析(information,decision and action in crew,IDAC)模型是目前最全面的人为可靠性分析模型,结合两者的优势提出了IDAC-STPA分析方法。然后,利用该方法分析战机飞行风险源,并在此基础上建立了飞行员操纵-战机机体模型,叠加不同飞行条件下飞行参量的风险度可以得到相应机动动作的安全谱,在此基础上得到该飞行动作的风险度。最后,通过对某型战机眼镜蛇机动的安全性分析,发现该型战机飞行中的不安全控制行为和潜在风险。通过安全谱提供一种直观的分析事故演化的方法,在此基础上计算的风险度提供了一种定量分析事故演化的方法,该方法可以为飞行员的飞行训练提供一定的借鉴。

Aircraft flight safety analysis and evaluation based on IDAC-STPA model

Aiming at the incomplete safety analysis and lacking qualitative analysis of fighter flight safety, a new flight safety analysis and evaluation method is proposed. The system theoretic process analysis (STPA) method can analyze the source of the risk that influences the flight safety of the fighter from the perspective of the system. The information, decision and action in crew (IDAC) model is the latest human reliability analysis model, and the IDAC-STPA analysis method is firstly proposed combining the advantages of both. Then, the IDAC-STPA method is used to analyze the fighter flight risk source, on this basis, the pilot pilot fighter aircraft body-servo model is established. Through the superposition of the flight parameter risk in different flight situations, the safety spectrum of the flight action is obtained, and on basis of it, the flight action is obtained. Finally, through the analysis of the safety of Cobra maneuver, the unsafe behavior and potential risks in fighter flight are discovered. The safety spectrum provides an intuitive method for analyzing the evolution of accidents. Based on this, the calculated risk degree provides a quantitative analysis of the evolution of accidents. At the same time, it can provide a reference for the pilot’s flight.