Rocketflip. Ball juggling experiments with quadrotors in the ETH Flying Machine Arena By Mark Müller, Sergei Lupashin and Raffaello D'Andrea www.flyingmachinearena.org IDSC, ETH Zürich, Switzerland Common question This is not human-piloted (please see the overview vid). The vehicles/ball are tracked by an overhead motion capture system and controlled by a pair of computers.