From: tunebonk@eleven.com   
      
   On 03/20/2019 11:02 PM, Bret Cahill wrote:   
   >> But this craft, with huge drag rings encircling it, is doomed.   
   > Why can't the fans be geared together like a tandem version of the Osprey?   
   >   
   > If one engine goes down you still have an operational aircraft.   
      
   With no engines, it's a windmilling prop. It's worse than that, two   
   counter-windmilling props.   
      
      
   >>>> > >>unless you can stop the fans and feather all those blades.   
   >>>> > >>But I don't want to discourage you.   
   >>> > >That's obvious as you haven't provided any argument on why this isn't   
   >>> > >at least as safe as conventional wing mounted ducted fans.   
   >> >I want blimps to come back.   
   > They need even more monstrously yuge propulsion surfaces.  I'd look into   
   making the blades out of inflatable rubber.   
      
   This got me thinking. You could charge a blimp like a balloon, rub it   
   with some wool. Then send it up, and it would be propelled by Earth's   
   magnetic field.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)