1. College of Civil Aviation, Nanjing University of Aeronautics & Astronautics, Nanjing, People’s Republic of China
2. College of Aeronautical Engineering, Air Force Engineering University, Xi′an, People’s Republic of China
3. Support Group Directly under Air Force Logistics Department, Beijing, People’s Republic of China
4. CCCC Third Highway Engineering Co., Ltd, Beijing, People’s Republic of China