Six Sigma in quality control of military aircraft engine assembly

Abstract

In order to solve the problem of low first time yield rate of engine clearance size in aircraft assembly plant C Six Sigma DMAIC (define, measure, analyze, improve and control) method was introduced to analyze the engine installation process. Multiple regression analysis and other methods were used to determine the key factors affecting the clearance size and their influence degree, and the optimal parameter range was obtained by linear fit-ting, and a detailed control plan was made. The analysis results of the control chart show that the improved clear-ance size is in a stable state of the process, and the first time yield rate of engine installation has increased from 65.2% before the improvement to 95%. Conclusion:quality control based on Six Sigma DMAIC method has a pos-itive effect on reducing production process variation and improving production efficiency.

Keywords

• six sigma
• engine assembly
• dmaic
• quality control