This presentation is an overview of the electric take-off system. Click the link to view the presentation on Google Documents in full screen. https://docs.google.com/present/view?id=ddqd6t63_90c7k4ndqv&interval=15

Electric take-off is a clean form of air transport using electric motors and cables to tow aircraft to altitude.   A cable is used to electrically winch the aircraft to cruise altitude (e.g. 30,000 feet).  The system relies on two types of unmanned aircraft flying in tethered circles above the airport. The first type of [...]