摘要
Abstract
To address the serious quality problems and flight safety threats caused by the high functional and performance requirements of helicopter flight safety parts(e.g.,rotor blades,hub central components/connectors)and the significant process implementation risks,this paper proposes and establishes a whole-process risk control system based on flight safety parts/processes.First,the definition,scope,and identification criteria of flight safety parts and processes are clarified,and high-risk components are screened with reference to the six major systems of a helicopter.Second,the Process Failure Mode and Effects Analysis(PFMEA)method is adopted to systematically identify critical safety processes with a Risk Priority Number(RPN)greater than 125 by evaluating severity,occurrence,and detection,and corresponding preventive measures are formulated.Furthermore,an organizational model is built from three aspects:compiling process documents for flight safety parts,strengthening on-site production control,and optimizing product processing technologies-with particular emphasis on surface-integrity-oriented process improvements to enhance fatigue life.Empirical results show that in 2023,the system completed 1 304 inspections of flight safety process instructions and 274 video monitoring checks,covering 1 074 batches of products,achieving 100%control of safety-characteristic processes and reducing internal quality losses by more than 3%for three consecutive years.Meanwhile,569 flight safety parts/processes and 70 safety finished products were successfully identified,significantly improving delivery quality and product availability,and achieving technical closure of major flight accidents.The"personnel-technology-material"collaborative risk control mechanism established in this paper shifts quality control from post-event treatment to preventive action,providing a systematic solution for the manufacturing safety of helicopter critical components.关键词
飞行安全件/飞行安全工序/全过程风险管控/PFMEA/工艺优化/直升机Key words
flight safety parts/flight safety processes/whole-process risk control/PFMEA/process optimization/helicopter分类
信息技术与安全科学
