From: zenadsl6186@zen.co.uk   
      
   Cray74@gmail.com wrote:   
      
   > Is it necessary for bipropellant rockets using a hydrogen peroxide   
   > oxidizer to breakdown the peroxide with a catalyst as it enters the   
   > combustion chamber, or can hydrogen peroxide just combust normally once   
   > it encounters fuel (and an initial ignition source)?   
      
   No, it is not necessary.   
      
   There are some circumdsrtanaces where it can be useful to pre-decompose the   
   peroxide, eg where the decomposed peroxide is used to turn a turbine, or for   
   easier ignition, but in practical terms they are very limited.   
      
   You can burn peroxide with alcohol or kero, or even with solid fuel in a   
   hybrid.   
      
   I don't much like peroxide as a rocket oxidiser or monoprop though, it is   
   sneaky-dangerous, it's impossible to buy the right grades (HTP) and   
   dangerous to make them, and it's harder to handle than people think.   
      
      
   --   
   Peter Fairbrother   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)