Solar-powered flight for 81 hours: A new endurance world record
  
    
    
   
    
    
    
    
    
    
    
    
    
  
     
     
     
  
Two weeks after demonstrating AtlantikSolar’s first 24-hour flight, the fixed-wing team of ETH Zurich’s Autonomous Systems Lab has reached another milestone: 81.5 hours and 2316 km of continuou...