In view of the common U-shaped apron structure of large- and medium-sized airports at home and abroad. this study considered the optimization design and performance evaluation of the U-shaped apron operation procedure. First. by analyzing the physical structure characteristics and traffic operation characteristics of the U-shaped area. https://safeersappliancers.shop/product-category/rangemaster-infusion-inf110dffss-110-dual-fuel-stainless-steel-chrome-trim/