Boeing says it has won a $240 million contract to upgrade five more Chinook helicopters for the U.S. Army Special Operations ...

Abstract: Clearance monitoring of rotors is of importance for the safe operation of mechanical systems. It is essential for the system stability and early warning of faults to monitor the clearance of ...

Sikorsky, a Lockheed Martin company, has successfully tested a rotor blown wing uncrewed aerial system (UAS) that can transition between helicopter and airplane flight modes, according to a press ...

The Rotor Blown Wing is a hybrid-electric, fully autonomous flying wing aircraft. Credit: Sikorsky Lockheed Martin’s Sikorsky business unit continues to invest in incremental improvements to its ...

However, while this design was initially popular, helicopter pioneer Igor Sikorsky settled ... issues with tail rotor helicopters that aren’t seen on coaxial or dual-main-rotor craft.

Sikorsky, a Lockheed Martin subsidiary, has successfully tested an electric-powered, 115-lb (52-kg) autonomous drone that utilizes a “rotor blown wing” (RBW) to transition between helicopter ...

The U.S. Department of State has approved a $500 million agreement that will enable the Croatian military to acquire eight UH-60 Black Hawk multi-role rotorcraft from Stratford-headquartered ...

Abstract: Radial-flux fractional slot concentrated winding (FSCW) yokeless counter-rotating dual-rotor permanent magnet (YCDRPM) machines are proposed and investigated in this paper. Counter-rotating ...

Sikorsky has introduced the S-92 Phase IV main gearbox, which includes an auxiliary lubrication system that automatically engages if primary oil pressure is lost, allowing helicopters to continue ...

Sikorsky, the Stratford-based helicopter maker, says it has successfully demonstrated a new type of technology that can take an aircraft from a helicopter-like vertical take off to wing flight ...

Lockheed Martin subsidiary Sikorsky has successfully flown an electric-powered, 115-lb (52-kg) autonomous drone that uses what it calls a "rotor blown wing" to fly like both a helicopter and an ...