airbus helicopters reveals its racer high-speed winged helicopter concept
at the paris air show, airbus helicopters unveils the aerodynamic configuration of the high speed demonstrator it is developing as part of the clean sky 2 european research programme. dubbed the ‘racer’, for ‘rapid and cost-effective rotorcraft‘, this concept demonstrator will incorporate an array of innovative features and will be optimized for a cruise speed of more than 250 mph (215 knots)
http://www.designboom.com/technolog...h-speed-winged-helicopter-concept-06-21-2017/
the retreating blades can approach a "stalled," non-flying condition if the speed is too high, while the advancing blades can be buffeted by shock waves as they hit near-supersonic speeds.
The Airbus X3 and Racer get around this by decreasing the main rotor RPM by around 15 percent at high cruising speeds.
https://www.engadget.com/2017/06/21/airbus-imagines-a-faster-helicopter-with-wings/
at the paris air show, airbus helicopters unveils the aerodynamic configuration of the high speed demonstrator it is developing as part of the clean sky 2 european research programme. dubbed the ‘racer’, for ‘rapid and cost-effective rotorcraft‘, this concept demonstrator will incorporate an array of innovative features and will be optimized for a cruise speed of more than 250 mph (215 knots)
http://www.designboom.com/technolog...h-speed-winged-helicopter-concept-06-21-2017/
the retreating blades can approach a "stalled," non-flying condition if the speed is too high, while the advancing blades can be buffeted by shock waves as they hit near-supersonic speeds.
The Airbus X3 and Racer get around this by decreasing the main rotor RPM by around 15 percent at high cruising speeds.
https://www.engadget.com/2017/06/21/airbus-imagines-a-faster-helicopter-with-wings/