coaxial rotors

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coaxial rotors

A rotor system in which two rotors are mounted on the helicopter rotating in the opposite direction but running on concentric shafts. There is thus no residual torque.
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The companies are offering the SB-1 Defiant, which is based on Sikorsky's X2 technology that replaces the single main rotor on a traditional helicopter with a coaxial rotor, and a pusher-propeller that replaces a traditional tail rotor, said Chris Van Buiten, vice president of Sikorsky Innovations.
Coaxial rotor aircraft are gaining interest in civil and military applications, as well as in the small, Unmanned Aerial Vehicle (UAV) market.
Black Shark is a single-seat Russian attack helicopter with the unique coaxial rotor system of the Kamov design bureau.
subsidiary (NYSE: UTX), said it has made the successful first flight of the S-97 RAIDER helicopter, a rigid coaxial rotor prototype designed to demonstrate a combination of maneuverability, hover ability, range, speed, endurance and survivability.
Going faster is not the only purpose of the story," Steve Engebretson, Director advanced military programmes at Sikorsky told Armada International, "we want to improve helicopter's manoeuvrability and properties, and our coaxial rotor configuration and pusher propeller is perfect for this purpose.
Here we open a new horizon to work on coaxial rotor helicopters with a new approach.
There are many different types of small unmanned copters, such as traditional helicopter, the twin-rotor or tandem-rotor helicopter, the coaxial rotor helicopter and four-rotor helicopter.
The X2 Technology demonstrator combines an integrated suite of technologies intended to advance the state-of-the-art, counter-rotating coaxial rotor helicopter.
A single CTS800 turboshaft engine powers a counter-rotating coaxial rotor and pusher propeller.
Sikorsky's X2 counter-rotating coaxial rotor technology unofficially tested at 258 miles per hour last week, bypassing a previous record set by a Westland Lynx in 1986.
Both the G70 and E70 employ a 70-inch coaxial rotor and control system, minimizing the complexity of coaxial systems of the past, but scalable to future craft, smaller or larger in size.