Editing Vortex ring state (section)

=== Radio control multirotors ===
[[Radio control]]led [[multirotor]]s (common on drones) are subject to normal rotorcraft aerodynamics, including vortex ring state. Frame design, size and power affect the likelihood of entering the state and recovering from it. Multirotors that do not have altitude hold are also more likely to succumb to operator error, where the pilot drops the craft too fast resulting in the upwash at the rotor hubs that can lead to vortex ring state. Those that are equipped with that feature, on the other hand, tend to control their descent automatically and can usually (but not always) escape the dangerous condition.<ref>{{cite web |url=https://www.youtube.com/watch?v=LCret4rv0HE  |archive-url=https://ghostarchive.org/varchive/youtube/20211212/LCret4rv0HE| archive-date=2021-12-12 |url-status=live|title=Quadcopter "Wobble of Death": VRS Recovery and Avoidance |work=YouTube |date=August 2014 |access-date=21 September 2014}}{{cbignore}}</ref>