Flutter test of rudder with real servo actuator in continuous transonic wind tunnel Jiangxu HAN, Nan LIU, Xiaoming SHI, Jin GUO, Song WANG and Xianpeng YU JNWPU, 40 2 (2022) 401-406 Published online: 03 June 2022 DOI: 10.1051/jnwpu/20224020401