Can you make a silent stealth helicopter? The Franco-German-Spanish subsidiary of the European Aeronautic, Defense and Space Company, Eurocopter, has invented noise-canceling rotor blades that do away ...

Helicopters make a lot of noise because of a physical phenomenon called blade-vortex interaction. Eurocopter engineers have developed a new kind of rotor blade that attenuates this problem. It’s ...

Hill Helicopters engineered composite main rotor blades using a novel single-cure manufacturing process for stiffness and ...

Computational fluid dynamics performed by NASA Ames Research Center illustrates the variation in vortices caused by advancing and retreating rotor blades. Credit: NASA The FAA in the past conducted a ...