From: henry@spsystems.net   
      
   In article <4070309e.11251266@supernews.seanet.com>,   
   Derek Lyons  wrote:   
   >>a long-term problem rather than something affecting short exposures, by   
   >>and large.   
   >   
   >Not really.  If you have salt air condense inside the craft, you end   
   >up leaving salts behind that can cause electrolytic corrosion in   
   >conjunction with normal atmospheric moisture.   
      
   That can be a problem even when no salt air is involved.  XCOR lost all   
   electrical engine controls on the 11th flight of the EZRocket, thanks to   
   salt-water corrosion in the desert!  "In Mojave, all water is salt water".   
      
   (Their FMEA revealed that having the engines quit on loss of electrical   
   control power was a bad idea -- what if it happens just after takeoff? --   
   so they stay running if that happens.  There's a redundant *mechanical*   
   cutoff, but they normally run the engines to propellant depletion anyway.)   
   --   
   MOST launched 30 June; science observations running     |   Henry Spencer   
   since Oct; first surprises seen; papers pending.        | henry@spsystems.net   
      
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