1997
DOI: 10.1007/bf02671921
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Ignition of petn particles by a gas-detonation wave

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Cited by 4 publications
(5 citation statements)
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“…Thus, the diameter d * cr , similarly to the critical diameter of ordinary detonation d cr , determines the limiting conditions of high-velocity convective combustion, whose propagation mechanism is not completely understood (it is obviously not a shock-wave one). Following [18][19][20], we will call such high-velocity combustion ablation combustion.…”
Section: Results Of Experimentsmentioning
confidence: 99%
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“…Thus, the diameter d * cr , similarly to the critical diameter of ordinary detonation d cr , determines the limiting conditions of high-velocity convective combustion, whose propagation mechanism is not completely understood (it is obviously not a shock-wave one). Following [18][19][20], we will call such high-velocity combustion ablation combustion.…”
Section: Results Of Experimentsmentioning
confidence: 99%
“…The specific ignition conditions were studied experimentally in great detail in [20] using multibeam pyrometry. This made it possible to measure the ignition delay of dispersed PETN particles in a gas detonation wave.…”
Section: On the Mechanism Of High-velocity Combustionmentioning
confidence: 99%
“…Thus, compositions with a thick liquid layer are being developed, leading to the necessity of estimating and describing the generally unsteady behavior of this layer at any site of the blown burning surface, and in particular, at the site of sudden flow expansion. The hypothesis of melt tearing down from the burning particle surface by gas flow was used for plausible explanation of experimental results [16].…”
Section: Introductionmentioning
confidence: 99%
“…At lower pressures of the mixture, the reaction is not observed over the entire time of recording (30 #sec). In [9], such a nature of the entrance of PETN into the reaction was explained by development of instabilities in the micron-size layer of melt on the surface of the HE grains under the action of the flow of gas-detonation products. For the experimental conditions of [9], the thermal parameters of the detonation products are such that heating and melting can proceed to precisely this depth.…”
mentioning
confidence: 97%
“…A disadvantage of this approach is that the process of formation of this layer itself is elimination from consideration. This concept was further developed in [9], where the interaction of individual PETN crystals with a gas detonation wave in a stoichiometric mixture of acetylene and oxygen was studied. This concept was developed with allowance for the weU-known facf that a gas detonation can excite the same transient process as that occurring in spark and dynamic initiation [10].…”
mentioning
confidence: 98%