ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,865, issued on March 31, was assigned to Nanjing University of Aeronautics and Astronautics (Nanjing City, China).
"Ultra-high-speed helicopter with stowed single-blade coaxial rotors" was invented by Guoqing Zhao (Nanjing City, China), Yongsheng Shao (Nanjing City, China), Qijun Zhao (Nanjing City, China), Tinghan Liao (Nanjing City, China), Xi Chen (Nanjing City, China), Bo Wang (Nanjing City, China) and Yuan Gao (Nanjing City, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ultra-high-speed helicopter with stowed single-blade coaxial rotors is provided and relates to the technical field of aircrafts. The ultra-high-speed helicopter inclu...