The surface temperature of burning ammonium perchlorate

The burning mechanism of ammonium perchlorate- based composite solidpropellants

“…Neither infrared(25) nor mass spectroscopic (26) investigations could reveal the presence of the NH4CI04 molecule in the gas phase. Thus, as is generally agreed (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(38)(39)(40)(41)(42)(43)(44)(45), AP degradation involves as a first step dissociative sublimation of a loosely held NH 3 :HCI0 4 complex, physically adsorbed at the decomposing AP surface. Further chemical reaction between the resulting gaseous NH 3 and HCI0 4 is then possible depending on the prevailing physical conditions.…”

“…It is to be noted that the value'of 30 kcal/mole is about half of the value of the heat of dissociative sublimation of AP, 58 kcal/mole (28)(29)(30). The implication of this might be that this AP gasification step follows the ClausiusClapeyron equilibrium vaporization law.…”

“…These were in the main restricted to measurements of surface temperature (29,42,43,91,(137)(138)(139)(140)(141) and burning rate(12,13,42, 120,123,140, 143)asa function of various parameters such as pressure, propellant composition and oxidizer particle size.…”

Necessary conditions of attainable superheating of the surface of nonvolatile condensed systems under intense heating

“…The temperature dependence w(T) in view of the increase in the decomposition reaction rate in the vicinity of the LPS corresponds to the generalized Arrhenius equation [7,8], , (15) in which the cofactor K(T) allows for the variation of the mechanism of reactions and the increase in the conversion rate in the vicinity of the LPS. For exam-…”

Solid Propellant Combustion Mechanism Studies

“…Of these only the work of Webb (23), Silla (24), Powling and Smith (25), and Barrere and Nadaud (46) appear in the unclassified literature. A summary of the burning rate data from these sources is shown in Figure 13.…”