The Vortex Ring State (VRS) is a dangerous condition for helicopters, occurring when the rotor descends into its own downwash, creating a turbulent vortex that causes a sudden loss of lift and control. This usually happens during vertical descents or hovering, especially at high descent rates and low airspeeds. Attempts to increase power can worsen the vortex, accelerating descent unexpectedly. To recover, pilots use forward cyclic control to move the rotor out of its downwash and reduce collect

Visualisation of escaping a Vortex Ring State with a Lama Helicopter. A Claud Vuichard film, founder of the Vuichard Recovery Aviation Safety Foundation. A film about the Vuichard Recovery Technique to escape the Vortex Ring State. Explore more Vuichard Recovery Techniques on https://buff.ly/2Lkr3oK ✔✔ The clean Vortex aerial shots can be bought at: https://buff.ly/2Lml42Q ✔✔ ✔✔ To buy the clean version of this film please contact: info@aerialstage.com✔✔ Credits: Helicopter: SA 315B Lama / Air-G

Vortex Ring State | Helipress Magazine

Perfect example of Vortex Ring State - VRS - Phantom 2 | Drone Crashes