From: earlcp@idirect.com   
      
   wbogen@visteon.com :   
      
   > Anyone know the status of research on heat exchanger laser launch   
   > technology?  By that I mean a vehicle that carries a propellant (maybe   
   > ammonia) that runs through a heat exchanger in the skin of the vehicle,   
   > is heated by a ground-based laser, and is exhausted through a nozzle,   
   > thus propelling the vehicle spaceward.   
   >   
   > Googling brings up mention of various papers and symposia on beamed   
   > propulsion but is anyone actually _building_ anything?  I was under the   
   > impression that small bench-top trials could be done without lasers,   
   > using other, cheaper heat sources.   
      
   I don't either, but please post links if you see anything.  I believe   
   microwaves can be used the same way too, and a microwave emitter should be   
   cheaper than a laser setup, I think.   
      
              Earl Colby Pottinger   
      
      
   --   
   I make public email sent to me!  Hydrogen Peroxide Rockets, OpenBeos,   
   SerialTransfer 3.0, RAMDISK, BoatBuilding, DIY TabletPC.  What happened to   
   the time? http://webhome.idirect.com/~earlcp   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)