Operation Plumbbob, Nevada Test Site, May-October 1957, Project 33.3, Tertiary Effects of Blast - Displacement PDF Download
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Author:
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Category :
Languages : en
Pages : 0
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Book Description
The objective was to determine the velocity and distance of translation of anthropomorphic dummies and equivalent spheres caused by blast winds. The primary technique for recording the movement of these objects was photo-triangulation. Analysis of the films obtained thereby gave the velocity and distance in the case of shot 1. In shot 2, the field of view was obscured by smoke (perhaps dust too) before any motion could be recorded by the cameras. The secondary technique (applicable to certain of the equivalent spheres) was to have the spheres impelled into missile traps. The resultant penetration provides a means for determining the velocity at the time of impact. Analysis of the results from both the primary and secondary techniques is expected to provide some of the information identified in the objective.
Author:
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Category :
Languages : en
Pages : 0
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Book Description
The objective was to determine the velocity and distance of translation of anthropomorphic dummies and equivalent spheres caused by blast winds. The primary technique for recording the movement of these objects was photo-triangulation. Analysis of the films obtained thereby gave the velocity and distance in the case of shot 1. In shot 2, the field of view was obscured by smoke (perhaps dust too) before any motion could be recorded by the cameras. The secondary technique (applicable to certain of the equivalent spheres) was to have the spheres impelled into missile traps. The resultant penetration provides a means for determining the velocity at the time of impact. Analysis of the results from both the primary and secondary techniques is expected to provide some of the information identified in the objective.
Author: L. M. Swift
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ISBN:
Category : Nevada National Security Site (Nev.)
Languages : en
Pages : 0
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Author: R. V. Taborelli
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Category : Blast effect
Languages : en
Pages : 38
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Book Description
The objective was to determine the velocity and distance of translation of anthropomorphic dummies and equivalent spheres caused by blast winds. The primary technique for recording the movement of these objects was photo-triangulation. Analysis of the films obtained thereby gave the velocity and distance in the case of shot 1. In shot 2, the field of view was obscured by smoke (perhaps dust too) before any motion could be recorded by the cameras. The secondary technique (applicable to certain of the equivalent spheres) was to have the spheres impelled into missile traps. The resultant penetration provides a means for determining the velocity at the time of impact. Analysis of the results from both the primary and secondary techniques is expected to provide some of the information identified in the objective.
Author: E. J. Bryant
Publisher:
ISBN:
Category :
Languages : en
Pages : 230
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Author: J. F. Halsey
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Category : Building, Bombproof
Languages : en
Pages : 0
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The problem of defining design parameters for structures capable of withstanding blast-induced ground shock suggested the use of shock spectra as a suitable means of presenting environmental conditions. Self-contained mechanical reed gages, capable of measuring the displacement shock spectrum over a frequency range of 3 to 300 cps in any one direction, were placed on Shots Stokes, Smoky, Galileo, Whitney, and Charleston. Canisters containing the gages were normally placed with tops flush to the ground level at predicted pressure levels of approximately 100 psi; however, on Shot Smoky two additional gages were placed on the floor of an earth-covered-personnel shelter, and two gages were installed on a concrete block for Shot Whitney. A composite plot of the results of surface gages from Shots Smoky, Galileo, and Whitney indicates some definite trends. The displacements are 2 to 3 times higher at 3 cps for the vertical component than for the radial component. The rate of decrease of displacement with increasing frequency is greater for the vertical component than for the radial component. A comparison of the results from the surface gages and those within the structure on Shot Smoky indicates an attenuation factor of three for vertical displacements, with no appreciable change in the radial direction.
Author: William R. Perret
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Category : Nevada National Security Site (Nev.)
Languages : en
Pages : 0
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Accelerations were attenuated as the inverse 0.75 power of depth except at the station of highest incident overpressure, where the exponent was 1.4. Peak radial accelerations were generally similar to peak vertical accelerations except at surface gages. Peak transient vertical displacements decreased exponentially with depth to a point below 100 feet. No definitely measurable transient displacement occurred below 100 feet. At all stations the absolute vertical displacement maxima delta decreased exponentially according to delta = delta[0e-0.017D, where d is depth in feet and the zero subscript denotes surface displacement.
Author: H. S. Meszaros
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ISBN:
Category : Nevada National Security Site (Nev.)
Languages : en
Pages : 0
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The objective was to provide instrumentation, electronic and self-recording, for obtaining air-blast and ground-shock loading and response of the structures employed by the various structures projects. Included was installation of transducers, recording of transducer signals, and presentation of the recordings as nonlinearized time-dependent plots of the measured variable in the specified appropriate units. A total of 430 recording channels was utilized; of these 161 were electronic recording on magnetic tape, 225 were used for self recording time-dependent guages, and 44 were peak-indicating. A basic description of the instrumentation employed by the Ballistic Research Laboratories in taking the structural measurements is given in this report.
Author: G. W. Imirie
Publisher:
ISBN:
Category :
Languages : en
Pages : 59
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Author: United States. Food and Drug Administration
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ISBN:
Category :
Languages : en
Pages : 18
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Author: G. S. Hurst
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ISBN:
Category :
Languages : en
Pages : 144
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