Role of condensed-phase reactions in ignition and deflagration of ammonium perchlorate propellants

✍ Scribed by Henry Wise; S. Henry Inami; Leonard McCulley

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 687 KB
• Volume: 11
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(67)90089-2

✦ Synopsis

The L:ontribution of cxotherml~., condensed-phase reactions to ignition and del]agration of propellants is examine. Measuretncnts of the rates of heat release, thermal dift'usivity, burning rate and ignition arc combined to demonstrate the role of reactions in propcl::mts made up of po',vdercd ammonium perchlorate and catalysts. By means of a theoretical analysis, it is found that tbr the propellants under study a thermal runav,'ay in the condens~ pha~ t:an account ibr the ignition phenomena observed. Also. at Io,x steady-stale deflagration rates ~he comribution of tl~e ~,olid-phase reacuon~ can be demonstrated. Some of the propellants quenched during dcflagration have sho~;n the existence of a subsurl~ce layer, which is located in a zone al which the icmperature has reached the level characteristic of the crystal transit ion of ammonium perchloratc.