Aviation
| Tue 16 Jun 2026
Beijing, June 16 -- Harbin Dongan Auto Engine has sought patent for Novel Double-rotor Transmission System Structure for Aviation Rotor Engine. This invention was developed by Xu Xiaoxu, Yao Shangqi, Zhao Guoning, Yan Hao, Li Peihang, Jin Ziwei, Teng Hong, Lyu Zhongbin, Liu Jichen, Wang Dechun, Ma Jing, Zhao Chunyu, Zhao Xingtia..