UAVOS announced that it had completed flight tests of its advanced bearing-less rotor system installed on the UVH 25EL unmanned helicopter. Torsion bar is aimed to provide an effective damping action ...

Lockheed Martin‘s (NYSE: LMT) Sikorsky subsidiary will maintain and overhaul the main rotor blade of Black Hawk helicopters for the U.S. Army under a five-year, $116.5 million contract. Army ...

Helicopters regularly have to get their rotor blades inspected, so they can be replaced if they're wearing out. Using the BladeSense system, however, the aircraft would be able to monitor the ...

Ordinarily on a helicopter, the main (top) rotor is mechanically linked to the tail rotor, so the spinning of the former causes the latter to do likewise. An experimental new system replaces the tail ...

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WWII helicopters were used for troop transport, casualty evac, airborne command posts, SAR operations, and attacking ground ...