Flame structure, kinetics and mechanism of chemical reactions in flames of mixed composition based on ammonium perchlorate and polybutadiene rubber

Modeling of combustion and ignition of solid-propellant ingredients

“…The reaction mechanism incorporates that proposed by Korobeinichev et al [139] for AP/CTPB, the AP monopropellant mechanism, and some reaction steps from the GRI mechanism [160]. The model was validated against the experimental data of Foster and Miller [179] for two mixtures of 12 mm AP in an HTPB binder.…”

“…This has especially been the case for pseudo-propellants. For example, the AP/HTPB combustion was modeled [101] based on reactions from the AP/CTPB [139], AP [161], and GRI [160] mechanisms. RDX/GAP was treated [23] using a combination of the Yetter mechanism for RDX [78] and the GRI mechanism [160].…”

Gas phase flame structure of solid propellant sandwiches with different reaction mechanisms

“…An 8-step reaction mechanism for the condensed phase and 39 species participating in 72 reactions for the gas phase was used. This is an improved form of the reduced mechanism proposed by Korobeinichev et al [10]. Jeppson et al [11] adopted this mechanism to examine the gas phase flame structure over a solid propellant sandwich with a nominally flat burning surface.…”

“…Detailed reaction mechanisms with 49 species and 243 reactions [9], and later a reduced mechanism of 35 species and 58 reactions [10] were reported to represent the complete gas phase flame structure. Jeppson et al [11] reported a kinetic model that accounts for the combustion of the composite propellant in solid, condensed, and premixed gas phase.…”

“…Among the investigators pursuing detailed chemistry of the propellant gas phase flame, Korobeinichev et al [9,10] studied the gas flame structure, kinetics, and reaction mechanisms of AP and hydroxy-terminated polybutadiene (HTPB) binder mixed with fine AP. Detailed reaction mechanisms with 49 species and 243 reactions [9], and later a reduced mechanism of 35 species and 58 reactions [10] were reported to represent the complete gas phase flame structure.…”