摘要:

AbstractBy means of shock‐wave measurements it was possible to calibrate the BICT‐gap test. The relation between the height of the gap and the shock‐wave peak pressure at the end of the gap is described. From other considerations the range where the test can be used, can be obtained. BICT‐gap test will be used to test explosives whose critical diameters do not exceed 20 mm and which will be initiated by shockwave pressures from 7 kbar to 60 kbar. The test method can be regarded as a small scale‐gap test for military e

ISSN:0721-3115    

DOI:10.1002/prep.19820070402

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

摘要:

AbstractLa solubilité du perchlorate d'ammonium dans l'eau, la masse volumique, la viscosité, I'indice de réraction et la conductivité électrique des solutions aqueuses ont été mesurés et comparés à d'autres valeurs de la bibl

ISSN:0721-3115    

DOI:10.1002/prep.19820070403

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

摘要:

AbstractThis article presents an efficient numerical algorithm for determining, for a given metallized propellant system, the optimum combination of reactants which can fetch the maximum specific impulse, and also the salient features of the associated computer program. The optimization procedure is based on the Fletcher‐Powell technique with the objective function being augmented by a penalty term to accommodate the constraints. Numerical results for the optimization, obtained by means of a computer program written in FORTRAN IV on the IBM‐360 computer for a representative propellant system, are also presented in this n

ISSN:0721-3115    

DOI:10.1002/prep.19820070404

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

摘要:

AbstractEfforts to generate detectable concentrations of free radicals in explosives, binders, and their mixtures are described. Radicals were readily produced in polycaprolactone and polyethylene glycol binders at liquid nitrogen temperature using stresses as low as 0.4 kbar. These radicals were all of the peroxy type, and presumably formed by reaction of mechano‐radicals with oxygen present in the polymer. No mechano‐radicals were observed from HMX or RDX using samples cooled to liquid nitrogen temperature and applied stresses up to 4 kbar. In neither impacted samples that failed to explode nor the residues remaining after a partial explosion were radicals detected by ESR.Low temperature γ‐irradiation of these materials was also carried out. Free radical signals originating in both the polymer and the explosive could be identified. The reactivity of NO2radicals from γ‐irradiated HMX is enhanced in the presence of binder. In γ‐irradiated HMX/polycaprolactone mixtures, the NO2radical anneals rapidly at 150 K, versus 240 K for HMX alone.Evidence is presented to suggest that the relatively stable NO2radical (such as produced by γ‐irradiation) in HMX does not play a dominant role in mechan

ISSN:0721-3115    

DOI:10.1002/prep.19820070405

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

摘要:

AbstractMixtures of crystalline explosive and water have as a rule detonation properties different from the dry material. It has been shown that the character of those changes is closely related to the structure of the particles (crystals, granules) of the explosives. The critical diameters and detonation velocities have been measured for a range of explosive‐water mixtures, and the results are interpreted in terms of the hotspot theor

ISSN:0721-3115    

DOI:10.1002/prep.19820070406

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19820070407

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY

ISSN:0721-3115    

DOI:10.1002/prep.19820070401

出版商:WILEY‐VCH Verlag GmbH    

年代:1982

数据来源: WILEY