Dynamical Simulation And Optimization Of Net-Recovery System For Unmanned Aerial Vehicle (UAV)

Since the20thcentury, Unmanned Aerial Vehicle (UAV) has been a small, cheap,flexible, convenient and flexible tool extensively applied in military and civil area. Asthe development of technique, recovery problems become one of the most importantparts of UAV study. We hope to solve this problem immediately. UAV net-recovery isthe topic in this paper.Dynamical simulation of UAV net-recovery system is a nonlinear problemmainly about flexible rope and the following is the details we do:1. Theory of UAV net-recovery system is raised. The recovery system is the formof “Single net and three pillars”, and the damper is the main energy absorbingcomponent. The UAV can be recycled automatically. So the recovery system isflexible.2. On the base of simulation analysis and experiments, the key components aredesigned successfully.After this work, the erosion rope, damper and arresting netsatisfy all the recovery requirements. First of all, two models of tensile rope are builtusing different elements. And one of them was selected after comparing. Secondly, onthe base of tensile test, impact calculation of single rope and small nets calculation,we finish the design of arresting net. Lastly, damping characteristic curve and impacttest guaranteed the accuracy of damper model.3. Finite element model of UAV net-recovery system is developed andexperiment of UAV recovery is carried out. Based on finite element model, recoverycharacteristic is researched. Initial model is improved and analyze, the results showthat the system becomes more flexible in certain extent.4. In consideration of several work conditions, optimization UAV net-recoverysystem of is taken out. UVA’s impact location is divided to front location, top location,down location, right location, right-top location and right-down location. We settensile force and erosion force as the factor and the peak overload as the object. Thisfunction is solved by agent model and optimization algorithm. After this work, UAVnet-recovery system can successfully complete all kinds of recovery tasks.