From: meiza@inva.com   
      
   Anvil*  wrote:   
   >> I haven't found any references to this idea. :)   
   > -----   
   > You would want to search rotary rocket   
   > Here's one reference:   
   > http://www.spaceandtech.com/spacedata/rlvs/rotary_sum.shtml   
      
   > Scaling that up you may want to research Hiller's work on flying   
   > cranes:   
   > http://avia.russian.ee/helicopters_eng/hiller_crane-r.html   
   > There were problems with using gas turbines at the tip, so research   
   > was going towards a resonant pulse-jet (valveless) design that would   
   > allow even bigger flying crane designs.   
      
   These ideas are opposite to my proposal of using the torque   
   from the rocket turbopump and a "dry" rotor.   
      
   Also, Armadillo aerospace tried rotors with tip jets and found   
   it's hard to control the fluid column in the blade.   
      
   --   
   -meiza   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)