Helicopter rotorwash is a complex and potentially dangerous form of wake turbulence, distinct from prop wash or wingtip vortices, especially for small aircraft. A recent accident where a Cirrus ...

Helicopters are marvelous pieces of engineering, providing a live demonstration of the laws of physics as they carry us into the skies. With metal or composite blades angled just right and spinning at ...

Most pilots are aware of the danger of wingtip vortices from heavy fixed-wing aircraft. And they understand the wisdom of avoiding the mini-tornadoes that flow invisibly outward and down. And ...

A school event at a U.S. base in Okinawa turned deadly when the blast of air from a descending rescue helicopter hurled a spectator off a viewing platform, sending her to a fatal fall. The Air Force ...

"Severe brownout conditions" caused by an MV-22 Osprey's own rotor wash contributed to the crash landing of the tilt-rotor aircraft in a Hawaii training accident last May that killed two Marines and ...

As the Air Force continues its re-evaluations of the proposed Combat, Search and Rescue (CSAR-X) platforms, the competitors are caught up in a swirl of questions regarding rotor downwash. The focus ...

The powerful air flow generated by a helicopter made a Japanese teacher lose her balance in her fatal fall during a school event at the U.S. military's Kadena Air Base in Okinawa Prefecture last year, ...