As a powered rotor spins, it generates torque in the opposite direction of rotation; if the rotor spins counterclockwise, the body wants to spin clockwise.

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday — as investigators continue to probe what caused the deadly tragedy. Divers were spotted ...

Video showed the helicopter plunging into the 5-foot-deep water near Jersey City, New Jersey, without its tail rotor or main rotor blade. The NTSB is investigating the cause of the crash.

An object floats at the scene of a helicopter crash on the Hudson River near lower Manhattan in New York, as seen from Newport, New Jersey, U.S., April 10, 2025.© Eduardo Munoz, REUTERS ...

Local News Tail rotor of helicopter that made emergency landing in Whitemarsh Township, Pennsylvania, found nearby By Liz Crawford May 20, 2025 / 6:59 PM EDT / CBS Philadelphia ...

Metro Rotor of doomed NYC helicopter pulled from Hudson River days after deadly tragedy By Emily Crane Published April 14, 2025, 1:45 p.m. ET ...

An eyewitness captured video during the moment the helicopter fell to the water, appearing to twist rapidly as it did so. Moments after, a rotor is seen falling, detached from the aircraft.