April 2007 — An unmanned hydrogen fuel cell powered “jet-like” UAV made history this week as it took to the skies over the hills of Bern, Switzerland. The “Hyfish” astonished its creators as it flawlessly performed vertical climbs, loops and other aerial acrobatics at speeds reaching 200 km/h. The successful maiden flight was the result of one and a half years of cooperative development between the German Air & Space Center (Deutsches Zentrum fuer Luft-und Raumfahrt) and a number of …