From: mooregr_deleteth1s@greenms.com   
      
   "JotaCe"  wrote in message   
   news:1116409084.626631.192840@g49g2000cwa.googlegroups.com...   
   > I have been thinking about the way the fire behaves in microgravity. I   
   > have found little information on this in the internet, so I am mostly   
   > just wondering, and these thoughts are what I want to share with you   
   > for discussion:   
   >   
   > In absence of gravity, the flames create a sort of sphere around the   
   > core of the fire (of course, this sphere will be limitated by the   
   > object in fire; depending on its shape, we will have an almost entire   
   > ball for a match, or just a semi-sphere in the case of a fire on a flat   
   > surface). Well, if the core of the fire is surrounded by flames   
   > (incandescent gases), how can the core be feed by fresh oxygen to keep   
   > the fire burning? Maybe this creates a sort of pulsating effect on the   
   > spherical flame, contracting it when the oxygen is running out, and   
   > allowing thus the flux of more oxygen into the core, which feeds again   
   > the flames to its previous size?   
      
   I'm sure NASA has some sort of article on this as they've done several   
   experiments on-board the shuttle with fire.   
      
   Ibeleive the pulsing effect is exactly what happened with a "candle" they   
   were testing.   
      
   Of course then there is the Mir fire, where the "candle" WAS the oxygen   
   source and as such had no trouble burning.   
      
   >   
   > If someone knows where can I find more information on this matter, I   
   > would be very grateful. Best regards,   
   >   
   > Javier Casado   
   > Space stuff in spanish in: http://es.geocities.com/fjcasadop   
   >   
      
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