Coaxial-rotor aircraft
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A coaxial-rotor aircraft is an aircraft whose rotors are mounted on concentric shafts with the same axis of rotation but turn in opposite directions. This is done to offset the yawing movement that on
A Ukrainian Navy Kamov Ka-27
Gyroplane-Laboratoire
Dixon helicopter
A QH-50 conducts flight tests off the USS Nicholas
Sikorsky S-97 Raider
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The Sikorsky S-97 Raider is a high-speed scout and attack compound helicopter based on the Advancing Blade Concept with a coaxial rotor system under development by Sikorsky Aircraft. Sikorsky planned
Coaxial-rotor aircraft
…helicopter rotor configurations, including those with coaxial main rotors. Some compound helicopters do use blades with flapwise stiffness, such as the Sikorsky S-97 Raider, and are able to use their two coaxial rotors to compensate for retreating blade stall. Another benefit arising from a coaxial design includes increased…
S-97 Raider in flight
Mockup in October 2011