轻型无人机飞行控制系统适航安全性研究

Research on airworthiness safety for flight control subsystem of light UAV

摘要:

随着技术的发展，起飞飞全重25公斤至150公斤的轻型无人机飞行空域可完全融入民航空域，本文试着从适航审定角度讨论其适航安全性。采用民机事故概率统计结果与适航安全水平对比方法，确定了该型无人机系统定量化的期望安全水平。然后以最关键的飞控分系统为对象，在某型无人机上进行了飞行控制功能危险分析和故障模式影响分析，获得飞控分系统安全关键清单。最后基于SAE ARP4754A和RPAS 1309，对飞控分系统部件的期望安全水平进行了定量化规定，和研制保证等级的分配。研究结果对全重25公斤至150公斤轻型无人机的适航审定管理实践有参考借鉴意义。

Abstract:

With the development of technology, the flight airspace of light unmanned aerial vehicle system(abbr. LUAS) with the take-off total weight from 25 kg to 150 kg can be fully integrated into the civil aviation airspace. the research on airworthiness certification was discussed in the paper .By comparing the probability of civil aircraft accidents with the safety level of airworthiness, the expected safety level of LUAS is determined.Then, taking the key flight control subsystem as the research object, its flight control function hazardous analysis(abbr. FHA) and failure mode effect analysis(abvr. FMEA) were carried out on a 150Kg take-off total weight LUAS to obtain the key safety factors of the flight control subsystem.Finally, based on the SAE ARP4754A and RPAS 1309, the expected safety level of the flight control subsystem components was quantified and the development assurance level(abbr. DAL) was assigned.The discussions in this paper can be used for the management practice of LUAS airworthiness certification.