While the fastest, most agile aircraft in the world undoubtedly still fill military hangars, the fastest civilian helicopters ...

The Sikorsky-Boeing SB-1 Defiant was a revolutionary coaxial rotor helicopter designed to replace the legendary Black Hawk in the U.S. Army’s Future Vertical Lift program. Featuring twin counter ...

“Our rotor blown wing has demonstrated the control ... Since then, Sikorsky hasn’t scrapped the promise of its X2 coaxial helicopter technology and continues to pitch it to other potential ...

The rotor of the helicopter from last week's deadly crash has been retrieved from the Hudson River, four days after the ...

The NTSB is investigating what caused a sightseeing helicopter to break apart and crash into the Hudson River, killing all ...

Although the helicopter, aptly named Ingenuity ... and each of the two coaxial rotors is just over 1.2 meters in diameter. Another way in which Ingenuity differs from terrestrial multicopters ...

The X2 takes off like a helicopter, but has almost the speed of its high powered fixed-wing brethren. © Sikorsky Aircraft Corporation The awarding of the 2010 ...

The research focuses on classic helicopter configurations with main and tail rotor as well as coaxial rotor helicopters, helicopters with Flettner configuration and rotorcraft configurations with ...