US Patent Issued to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS on July 29 for "Helicopter active noise suppression device integrating sound array and on-propeller control" (Chinese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,159, issued on July 29, was assigned to NANJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS (Jiangsu, China).

"Helicopter active noise suppression device integrating sound array and on-propeller control" was invented by Yongjie Shi (Jiangsu, China), Taihang Ma (Jiangsu, China), Zhiyuan Hu (Jiangsu, China), Guohua Xu (Jiangsu, China) and Yang Liu (Jiangsu, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A helicopter active noise suppression device integrating a sound array and on-propeller control, which relates to the technical field of helicopter noise reduction, includes an annular loudspeaker array, a plurality of force exciters, an error mic...