Numerical Prediction Of The Motion Of An Unmanned Aerial Vehicle And Parachute System During Recovery

With the development of science & technology and changes in modern military, UAV (Unmanned Aerial Vehicle) has been used widely in modern wars for its characteristics of small size, light weight, mobility, ease of concealment and capability of long time flight, and it is especially suitable for dangerous missions. Nowadays, UAV is raising value of its own due to the extensive use of high-tech equipment, and the best way of reducing costs is the repeated use of it.This paper makes a study of a certain type of UAV-parachute recovery system. The dynamic models are established in each stage of the UAV parachute recovery process. This study gives a numerical simulation and analysis of the motion characteristics of the UAV-parachute combination in the whole recycling process, and a prediction of the dynamic load, attitude angle, and speed of the UAV as well as the trajectory of UAV and parachute. In order to investigate the precision of landing, the landing point with the wind effects are compared to the windless condition. This study shows that: there is a widely normal operating range of the controlled recovery system compared to the non-controlled state according to the operating envelopes. This work is valuable for improving the UAV-parachute recovery system and some other similar research.