On 10/21/2020 8:18 PM, Henry Spencer wrote:
Also, one downside of cooling with peroxide is that hot peroxide is harder on catalysts than cold peroxide -- in particular, silver-based catalysts top out at about 85% peroxide if the peroxide comes in hot, but reportedly will handle 90% if it's cold. (These numbers undoubtedly depend somewhat on other variables.)Not an issue, of course, if you're not catalyzing the peroxide but rather injecting it directly as liquid oxidizer. I speculate that hotter peroxide might actually be a plus for direct injection - possibly easier to get to combust stably and efficiently.