ALEXANDRIA, Va., June 12 -- United States Patent no. 12,299,354, issued on May 13, was assigned to AECC Commercial Aircraft Engine Co. Ltd. (Shanghai).

"Modeling method for a fan assembly of an aero engine" was invented by Xiaohe Yang (Shanghai), Xiaomeng Pei (Shanghai) and Shiwen Liu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A modeling method for a fan assembly includes-comprises constructing non-axially symmetric end wall curved surfaces in a cascade channel. Constructing the non-axially symmetric end wall curved surfaces in the cascade channel includes: determining, using a flow path design method for a dual flow path of a blade end area, an initial axially symmetric curve radius and a rece...