The fundamental design principles behind rotary-wing aircraft date back to the Renaissance, with some of the earliest-known designs belonging to Leonardo da Vinci. Naturally, technology has ...

The main rotor of the doomed helicopter that crashed into the Hudson River was finally recovered Monday — which could provide crucial information as investigators continue to probe what caused the ...

Emergency responders at the Mercy Flight crash that killed two pilots on April 26 in Elba have known that the Bell 429 helicopter landed in two pieces: the main body and the tail. Now a preliminary ...

LOWER MANHATTAN (WABC) -- The main rotor and roof structure from the deadly helicopter crash last week have been recovered from the Hudson River. It could be the most important piece of evidence yet ...

The science behind how helicopters turn midair is straightforward enough. Most of them usually come with main and tail rotors, which spin to create lift for the craft. This lift can be controlled by ...

The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the devastating accident that killed all six people on board, according to a ...

Helicopters stand among the many reasons why aviation is as important as it is today. These aircraft occupy various niches worldwide, ranging from extensive military applications, such as helicopters ...

Forensic engineers examined the main rotor driveshaft that had sheared just below the teeter stops. Teeter stops are fitted to the main rotor driveshaft to prevent the main rotor spindles from ...