NASA pushes Mars helicopter rotors past the speed of sound for the first time ever — next-gen “SkyFall” aircraft's rotors hit 3,750 RPM, ten times faster than normal helicopters
From Latest from Tom's Hardware: NASA pushes Mars helicopter rotors past the speed of sound for the first time ever — next-gen “SkyFall” aircraft's rotors hit 3,750 RPM, ten times faster than normal helicopters
The rotor blades that will carry NASA’s next-generation helicopters to new Martian heights broke the sound barrier during March tests at NASA’s Jet Propulsion