If helicopters didn't have tail rotors, they would spin in circles because they need a force pushing in the opposite ...

The VTOL UAS is designed to take off and land vertically, resting on its tail like a helicopter ... "Sikorsky conducts ...

All three crew members on board survived, and no one on the ground was injured. There's been a lot of speculation surrounding the helicopter's tail rotor as a possible failure that could have ...

Video showed the helicopter plunging into the 5-foot-deep water near Jersey City, New Jersey, without its tail rotor or main rotor blade. Emergency personnel work at the scene of a helicopter ...