Explosive behavior of a simple composite propellant model

Explosive behavior of aluminized ammonium perchlorate

“…In the study of waxed A? 3 The present data show that the mixture of the non-explosive fuels (wax or Al) with an explosive exhibits the group behavior of the explosive component, aa originally proposed in Reference 4.…”

“…A 2 50p screen was used for final screening Pressed isostatically and machined to 1-3/8" diam x 9" X X X X X Density of charge (g/cc) 3 The corrected detonation velocity was obtained by using AD = o (o2 -11) where b is the slope of the D vs p line for 1-3/8" diameter charges of AP N-141!Al HSD (90/10), and p, is the average density, 1.32 g/cc., b = 2.3.…”

“…For AP/wax, 90/10, nearly a stoichiometric mixture, it was found that Tf approximated the Ruby value of T better at 50% than at 80% fa TMD; f&-r pure AP, the approximation was acceptable only in the vicinity of 50N I D. 3 Since AP and its mixtures show regular detonation behavior (i.e., linear D vs 6) only at 40-55% TMD, this is no great restriction. Moreover, at 50% TMD, the major Cl product shown by Ruby was HCI as was also the case for deflagration in the propellant code.…”

“…wax), they indicated that only about half of the wax was reacting in the detonation. 3 Finger et a1 1 3 have used the Ruby code for computing relative energies (available for moving the metal wall in the cylinder test) of HmX/perchlorate/hydrocarborWAl syrtems relative to HMI. For the non-aluminized system, their results indicated complete reaction of 6g AP in the two inch dia test, the expected particle size effect on reaction time of perchlorates (3O KP 90%-and 4i4 KP 30% reacted in 0.5 psec), and the fact that reaction of the Al is post-detonation, e.g., 15% of the aluminum present had reacted after 4 psec.…”

“…3a nor 3b shows any sign of a sharp change in slope such as that found in the D vs u curves of mixtures of AP with the volatile fuels, wax and HMX. 3 With the assumption that the infinite diameter detonation velocity (Di) is a linear function of A, the extrapolations of Fig. 3 give NOLTR 72-15 …”