clips

  • Helicopters Have A Speed Limit

    There’s a hard speed limit for helicopters. Like, a speed that helicopters physically can’t exceed. Above about 400km/h, helicopter blades literally run out of lift and the bird falls out of the sky. It’s due to a phenomenon called dissymmetry of lift, and this video explains exactly how it works.


  • Speedflying Down A Mountain Might Be The Craziest Sport

    Speedflying Down A Mountain Might Be The Craziest Sport

    Video: Jumping out of an aeroplane with a parachute on your back has its own risks. But at least in the air there’s nothing to crash into until you hit the ground. Speedflying, on the other hand, where athletes like Jamie Lee parachute down mountains just inches above massive rocks, is basically a non-stop life-risking…