| Shock Evolution After Shaped Charge Jet Impact and Its Relevance to Explosive Initiation |
FEB 96 |
31 pages |
| Authors:
R. Frey; W. Lawrence; M. Chick; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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 | When a shaped charge jet impacts a target containing explosive, the explosive may be initiated by one of three shocks: the impact shock, a bow shock that forms in the inert plate covering the explosive, or a bow shock that forms in the explosive. In this report, numerical calculations are used to determine how thick the cover plate must be to prevent initiation by the impact shock and how much ... |
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| Determination of a Worst-Case Acceptor for Large-Scale Sympathetic Detonation Testing |
JUL 94 |
26 pages |
| Authors:
O. Lyman; R. Frey; W. Lawrence; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD
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| The Project Manager for Ammunition Logistics (PM-AMMOLOG) has an interest in barriers which prevent sympathetic detonation between large stacks of ammunition. Tests of such devices are expensive, and the results are valid only for the munitions that are tested. To extend the validity of such tests, PM-AMMOLOG would like to identify 'worst-case acceptors' which can be used in such tests. A successful test with a worst-case acceptor would validate a ... |
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| Temperature Measurement of Residual Penetration Fragments. |
JUL 1977 |
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| Authors:
W. G. Von Holle; G. Melani; J. Waddell; R. Frey; BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD
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 | The temperature of residual fragments from the low velocity penetration of 1.27 steel spheres into various targets has been measured by 2-band infrared radiometry. The residual velocities of the fragements were also measured. The temperatures correlate well with the predictions of a simple model based on the conversion of mechanical energy to heat. The residual velocities correlate with theoretical and previous empirical data. (Author) |
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| TUNABLE INFRARED GENERATION BY STIMULATED RAMAN SCATTERING, IN: INFRARED PHYSICS, VOL16, NO1/2, P117-120 |
MAR 1976 |
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| Authors:
R. Frey; JOURNAL ARTICLE-UNIDENTIFIED SOURCE
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| Absolute Gravity Measurements with Reversible Pendulums at Potsdam, 1968-1969 (Absolute Schwaremessungen mit Reversionpendein in Potsdam, 1968-1969), |
JAN 1973 |
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| Authors:
R. Schueler; G. Harnisch; H. Fischer; R. Frey; DEFENSE MAPPING AGENCY AEROSPACE CENTER ST LOUIS MO TECHNICAL TRANSLATION BRANCH
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| A new absolute determination of the acceleration due to gravity was made at the former Geodatisches Institut Potsdam (since 1969 part of the Zentralinstitut Physik der Erde), using the reversible pendulum method. Beside essential theoretical fundamentals of the reversible pendulum method the publication presented here includes a detailed description of facts concerning the devices which have been used, their results and the way of interpretation. In addition the determinations of ... |
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