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20210510110945.0 |
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|a (OCoLC)ocm24128949
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|a (OCoLC)24128949
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|a AFM
|b eng
|c AFM
|d EGM
|d OCLCQ
|d OCLCF
|d OCLCQ
|d FTU
|d OCLCO
|d COD
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|a COD9
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|a NAS 1.12:366
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|a NAS 1.12:366
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|a Herr, Robert W.
|0 http://id.loc.gov/authorities/names/n82227039.
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|a Effects of the atmospheric-lithostatic pressure ratio on explosive craters in dry soil /
|c by Robert W. Herr.
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|a Washington, D.C. :
|b National Aeronautics and Space Administration,
|c 1971.
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|a 88 pages :
|b illustrations ;
|c 27 cm.
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|a text
|b txt
|2 rdacontent.
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|a unmediated
|b n
|2 rdamedia.
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|a volume
|b nc
|2 rdacarrier.
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|a NASA technical report ;
|v R-366.
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|a Includes bibliographical references (pages 22-23)
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|a The effects of the atmospheric pressure on the size of explosive craters was experimentally investigated by detonating small spherical high-explosive charges at various depths in a bed of dry, particulate soil contained within a vacuum cylinder. The results indicate that for surface explosions atmospheric pressure has little effect on crater dimensions, but for charges buried beneath the surface, the dimensionless ratio of atmospheric pressure to lithostatic pressure can be of major importance. For a constant value of this pressure ratio and a range of charge masses of nearly 11 orders of magnitude, crater dimensions were found to vary as the fourth root of the charge mass and inversely as the fourth root of the product of the soil density and gravitational acceleration. Soil permeability was found to have an appreciable effect on crater dimensions. For cratering experiments conducted under standard atmospheric pressure and gravity conditions, the atmosphere had a relatively greater effect on the small explosions than on the large ones at a given value of the charge-depth parameter.
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|a Atmospheric pressure.
|0 http://id.loc.gov/authorities/subjects/sh85009290.
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|a Cryptoexplosion structures.
|0 http://id.loc.gov/authorities/subjects/sh85034445.
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|a Atmospheric pressure.
|2 fast
|0 (OCoLC)fst00820487.
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|a Cryptoexplosion structures.
|2 fast
|0 (OCoLC)fst00884541.
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|a United States.
|b National Aeronautics and Space Administration.
|0 http://id.loc.gov/authorities/names/n78087581
|1 http://isni.org/isni/0000000449071619.
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| 710 |
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|a Langley Research Center.
|0 http://id.loc.gov/authorities/names/n79134855
|1 http://isni.org/isni/0000000406376754.
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|i Online version:
|a Herr, Robert W.
|t Effects of the atmospheric-lithostatic pressure ratio on explosive craters in dry soil.
|d Washington, D.C. : National Aeronautics and Space Administration, 1971
|w (OCoLC)761906566.
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| 830 |
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|a NASA technical report ;
|v R-366.
|0 http://id.loc.gov/authorities/names/n86725082.
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| 907 |
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|a .b118268971
|b 06-01-21
|c 05-10-21
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|b 05-10-21
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|a .b118268971
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|c 05-10-21
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|a MARS - RDA ENRICHED
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| 952 |
f |
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|p Can circulate
|a University of Colorado Boulder
|b Boulder Campus
|c Norlin
|d Norlin Library - Government Information - US
|e NAS 1.12:366
|h Superintendent of Documents classification
|i document
|m U183075222562
|n 1
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