Leading Chinese hypersonic aviation scientist Yan Hong dies at 56

Yan Hong, one of China’s leading researchers in hypersonic and high-speed propulsion technologies, has died at the age of 56, according to Northwestern Polytechnical University. Yan, a professor and doctoral supervisor at NPU’s school of power and energy, died on Tuesday at Jiangsu Provincial People’s Hospital in Nanjing following an illness. The university in the northwestern city of Xian has been placed on US sanctions lists for its alleged ties to military-related research. Her research...