When rotor downwash hits the ground surface, the vortex circulation is outward, upward, around and away from the main rotors in all directions. Credit: U.S. Army Helicopter wake turbulence is more ...

The NHS and aviation bodies have been told to take coordinated action to improve safety procedures following the death of a pensioner who was blown over by rotor downwash from a search and rescue ...

UK researchers believe they have discovered a “powerful new approach” to demonstrate safety risks posed by hovering helicopters and other vertical take-off vehicles by using video simulations to ...

According to the aircraft’s operations manual, maximum downwash from the S-92 is around 50kt (92km/h) and occurs around 100ft below the helicopter – in this case, around 25s before landing. Once below ...