The foldable-arm,stowable quadrotor Unmanned Aerial Vehicle(UAV)addresses the energy consumption issue during the pre-departure cruising phase of long-distance operations.By leveraging its foldable-unfoldable deformation capability,the foldable quadrotor UAV can be stored and loaded into a hollow projectile,thus enhancing the rapid remote deployment and reconnaissance abilities of UAV swarms.The UAVs are launched simultaneously using a cannon-launch method,with a proposed solution for six foldable quadrotor UAVs to be radially ejected in synchronized upper and lower layers.Based on ballistic parameters such as flight attitude,trajectory,and velocity decay,the optimal launch angle for this system is determined.Furthermore,the ejection dynamics of the UAVs from the launch chamber are analyzed,with measured torque values of 55 Nm and 26 Nm for the synchronous dual-axis rotation that drives the folding wings and arms.Simulation results and flight trajectory data from equivalent cannon-launch experiments indicate that the deployed foldable rotor UAVs achieve synchronized radial ejection and stable hovering after release,improving the combat survivability of small UAV swarm systems to some extent.
维普
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