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Abstract:
The study is on detonation characteristics of low-density granular materials. The purpose of the research under this and preceding contracts is to clarify the processes during initiation to detonation in propellants and explosives. Toward this end studies have been made of (a) the mechanisms of initiation and propagation in low-density NH4ClO4, (b) the properties of initiating shocks, (c) the loci of shocked states achieved in low-density granular aggregates, (d) hot spots in shocked granular NH4ClO4 and KC1, and (2) friction and jetting as possible causes of hot spots. The main conclusions are that shocks greater than about 5 kbar are reactive in granular NH4ClO4 at a density of 1.0 g/cu cm, that the reaction occurs from the time of shock entry and therefore is at least partially in the shock front, and that the likely sites of this shock-front reaction are hot spots which occur when the interstices collapse. These hot spots have been photographed at about 40 kbar. (Author)
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Annual rept. 1 Jan-31 Dec 67 |
| Pages: |
27 |
| Report Date: |
20 JAN 1968 |
| Contract Number: |
638, AF496381669 |
| Report Number: |
0200438 |
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Keywords relating to this report:
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