From: zili@home   
      
   Am 4 Sep 2005 13:02:12 -0700 schrieb "manofsan@yahoo.com":   
      
   >Hi Mike,   
   I'm not Mike, but I'll try to answer just one of your questions...   
      
   >I'd like to ask if the hull temperature of a launchcraft would come   
   >close to 100C during ascent. I can understand that nobody wants a   
   >polyethylene heat shield for re-entry, but if it's a disposable rocket   
   >then perhaps having your polyethylene boosters/stages burn up on   
   >re-entry ensures a more thorough/carefree disposal.   
   >The embrittlement from cold sounds like more of a problem to me.   
      
   As a matter of fact, especially nose cones/payload shrouds are often   
   insulated with a thin layer of cork, that makes a very good isolator,   
   because its surface is charred away and acts just like an ablative   
   heat shield.   
      
      
      
   cu, ZiLi aka HKZL  (Heinrich Zinndorf-Linker)   
   --   
   "Abusus non tollit usum" - Latin: Abuse is no argument against proper use.   
      
   mailto: heinrich@zili.de   http://zili.de   
      
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