Aerospace
| Thu 23 Apr 2026
Beijing, April 24 -- Harbin Aircraft Industry Group has applied Chinese patent for Helicopter Rotor Rotating Speed Display and Alarm Circuit. Li Haohan, Tan Jingjie, Luo Heshun, Yang Chunbao, Qian Henglong, Zhang Hongxia, Xiu Jiechen, Li Yang, Zhao Yantao and Wang Shuxuan developed it.
The patent application number is CN2025113..