Design and implementationfor full field of view measurement scheme in vertical wind tunnel

Spin is a kind of abnormal state of aircraft, complicated and dangerous. It can easily cause flight accident. Spin experiment in vertical wind tunnel is one of the main research technical means. The purpose is to obtain the attitude angle of model aircraft in experimental process, for analysis of its spin characteristics. The paper concentrates its attention on the characteristics of spin motion and the application defect of binocular measurement system in previous experiments. The full field of view measurement scheme is designed, and the research for the key technologies is carried out. The coded marker recognition technology is adopted to realize feature automatic identification. The 3D reconstruction technology based on rigid body is adopted to realize the measurement of model attitude. The date calibration based on the same reference plane is adopted to realize the effective data fusion within multiple angles of view. The effectiveness and reliability of the measurement technology is proved by spin experiment in vertical wind tunnel. The experiment curves are complete, and the image utilization reaches 95%. It provides richer data for characteristics analysis of spin phenomenon.