We have moved to http://www.XPrizeNews.org.
Saturday, July 12, 2003
Armadillo Aerospace News: Catalyst bale, Forced preheat, Big vehicle work
We tried an alternate catalyst design fro Catalytic Products International this week. It is basically a mass of thin stainless steel ribbons that have been crimped like heating elements, then coated with a catalyst. It is provided in a pack wired together like a hay bale. We were hoping that a platinum based catalyst on a stainless steel base would be a metallic bond, but it turned out to be more of a platinum-black powder coating, and the adhesion was terrible. It was probably fine for gas processing (the intended application), but you could rub the coating off with gloved fingers, and rocket engine liquid / high speed gas flows took it right off. Baking it on under flame helped a bit, but not nearly enough. When we fired an engine with this catalyst in it, we wound up with a big ring of black goo on the ground under the nozzle where all the catalyst had been washed off. Read More
Archives: Latest News | April 2003 | May 2003 | June 2003 | July 2003 | August 2003 | September 2003 | October 2003 | November 2003 | December 2003 | January 2004 | February 2004 | March 2004 | April 2004 | May 2004 | June 2004 | July 2004 | Site Feed