Intrigued by a grainy video from 1992, [Destin] from Smarter Every Day decided to jump in and fund his own research into the strange phenomenon of vortex ring collisions. This hack started with a s… ...

Philadelphia aviation lawyer Arthur Alan Wolk, who represents the families, said Cullen was an “expert in vortex ring state avoidance and the Bell 407 he was flying is virtually impossible to ...

Here are five things to know about the Aug. 3, 2020, crash and the NTSB's findings. Jim Clayton entered vortex ring state.

The volcano, one of Europe’s most active, has been spewing volcanic vortex rings at a rapid pace. But that doesn’t mean a big explosion is on the way, one expert says.

A Waikato Westpac Rescue Helicopter crash was caused by a phenomenon called a ‘vortex ring state’, an investigation has found. The helicopter was trying to ...

Europe's largest active volcano, Mount Etna in Italy, has been emitting "smoke rings" since last week, putting on a spectacular show for tourists and locals alike.

NTSB faults pilot, instructor in 2022 fatal accident. The NTSB cited "the pilots' inappropriate flight control inputs while in vortex ring state" as the probable cause of the April 26, 2022 accident.

Rare pink volcanic vortex rings seen spewing from Italy's Mount Etna 01:04. A rare event was caught on camera over the weekend at Italy's Mount Etna, the most active stratovolcano in the world.

Vortex rings are not the only unusual signs of activity recently spotted at Mount Etna. On July 20, a new vent opened up in the Bocca Nuova crater, Behncke wrote on Twitter.

The rare phenomenon, known as “volcanic vortex rings,” is generated by the combination of rapid gas release and the vent shape spewed out of a new crater that opened on Tuesday on Etna’s ...

The Transport Accident Investigation Commission (TAIC) has released its final report on the 2023 crash of an air ambulance helicopter on Mount Pirongia. Photo/Supplied. Track plot on GE with key ...

The report states that during an 18-second span from 12:59:26 to 12:59:44, the helicopter was in the vortex ring state. At 12:59:47, flight data shows that there were “multiple abrupt control ...