Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, China Helicopter Research and Development Institute, Nanjing University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics and Nanjing University of Aeronautics and Astronautics