Burning to detonation transition in porous beds of a high-energy propellant
| Autor: | Richard R. Bernecker, H. Sandusky, Donna Price |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Deflagration to detonation transition
Propellant Materials science Explosive material General Chemical Engineering Detonation General Physics and Astronomy Energy Engineering and Power Technology Thermodynamics General Chemistry Tetryl chemistry.chemical_compound Fuel Technology chemistry Maximum density Deflagration Porosity |
| Zdroj: | Combustion and Flame. 48:219-231 |
| ISSN: | 0010-2180 |
| DOI: | 10.1016/0010-2180(82)90129-8 |
| Popis: | The tendency of highly confined porous charges of a cross-linked, composite modified double-base propellant (VLU) to undergo a deflagration to detonation transition (DDT) has been studied over the range of 1.0–1.7 g/cm3, i.e., 53–90% theoretical maximum density (%TMD). The transition mechanism in VLU differed from that observed in most explosives. However, it resembled the variant mechanism previously observed in tetryl and thereby clarified the picture of this variant mechanism. The observations on VLU showed that it differed from most other explosives studied in the following ways: (a) the location and apparent cause of accelerated pressure buildup necessary for shock formation; (b) the effect of porosity on the relative time to detonation Δt d ; (c) the strong correlation between Δt d and predetonation column length l over the entire porosity range; and (d) a shallow (or no) minimum in the high porosity end of the l versus %TMD curve. |
| Databáze: | OpenAIRE |
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