DLR-led STAR project shines light on performance boost from ‘active twisting’ rotor blades

German researchers believe the addition of active twisting technology to helicopter main rotor blades can significantly improve performance while also cutting noise and vibration levels.

https://www.flightglobal.com/helicopters/dlr-led-star-project-shines-light-on-performance-boost-from-active-twisting-rotor-blades/166144.article