Vortex ring state - Wikipedia
The vortex ring state (VRS) is a dangerous aerodynamic condition that may arise in helicopter flight, when a vortex ring system engulfs the rotor, causing severe loss of lift.
Vortex Ring State: what is it, how to prevent it and how to get …
One of the most dangerous situations a helicopter pilot can get into is called Vortex Ring State. Learn what it is, how to prevent and how to get out of it.
Helicopter Technique: Escape the vortex - AOPA
2018年2月1日 · Sometimes called settling with power, vortex ring state happens when a helicopter descends at a rate that puts the blades in their own downwash; instead of drawing clean air from above the blades, some disturbed air begins to travel up through the blades.
What is VRS in Aviation? (Vortex Ring State)
2023年7月30日 · Vortex Ring State (VRS) is a critical aerodynamic phenomenon that can occur during helicopters’ descent. It is a dangerous condition characterized by a significant loss of lift and control, leading to a potential loss of aircraft stability.
Vortex Ring State – What Drone Pilots Need to Know
2021年7月5日 · A vortex ring state (alternatively called ‘settling with power’) is an aerodynamic condition where the rotors of a helicopter or multicopter or engulfed in a vortex ring. This results in a loss of lift and a subsequent loss of control.
V ortex ring state occurs when a recirculation vortex envelops a helicopter’s rotor system, causing significant loss of lift. This can occur when the helicopter is descending at a reduced airspeed, and is most at risk of happening during downwind approaches.
Vortex Ring - SKYbrary Aviation Safety
Vortex Ring, (a flight condition also sometimes called ‘settling with power’ or ‘power settling’) is a flight condition in which a helicopter that is receiving power from its engine(s) loses main rotor lift and subsequently experiences loss of control.
What Went Wrong - AOPA
2023年7月27日 · What is vortex ring state? Vortex ring state is an especially dangerous condition for a helicopter because it typically happens close to the ground, especially in downwind approaches.
Vortex Ring State – Helicopter Emergencies and Hazards
Vortex ring state (formerly referenced as settling-with-power) describes an aerodynamic condition in which a helicopter may be in a vertical descent with 20 percent up to maximum power applied, and little or no climb performance.
With a vortex ring above the rotor, collective becomes ineffective at arresting descent rate as it merely closes the gap between the ring and rotor, preventing thrust from increasing. VRS is an aerodynamic interaction phenomenon between the rotor and its vortex wake.