Accession Number : ADA062082


Title :   Analysis of Aerosols and Fallout from High-Explosive Dust Clouds. Volume 2


Descriptive Note : Final rept. 3 May 1971-30 Sep 1973


Corporate Author : METEOROLOGY RESEARCH INC ALTADENA CA


Personal Author(s) : Green, W D ; Fegley, M J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a062082.pdf


Report Date : Mar 1977


Pagination or Media Count : 228


Abstract : Dust clouds from seven high-explosive detonations ranging from 20 to 500 tons in the Middle Gust-Mixed Company series were sampled using various aircraft-mounted instruments. A wet cyclone system proved to be the best device for sampling airborne dust. Dust concentrations as a function of time and location in the clouds were determined. One cloud was underflown as early as Z + 1:22, and another was entered at Z + 1:36. Fallout was measured on three tests, and various experiments were conducted to detect sweepup of dust from outside the crater zone. Gas samples were collected and analyzed from inside the 500-ton Mixed Company III cloud. Selected airborne dust and fallout samples were sized using an optical image processing computer. Density measurements were made to determine if particles expanded or melted in the fireball. Volume II contains ten appendices which include the following topics: Aircraft Instrumentation; Collection Efficiency Tests -- Wet cyclone vs filter sampler; Ground Experiments and Installations; Laboratory Analysis of Data; Size Distribution Data -- Airborne dust samples and Fallout dust samples; Particle Density Data--Airborne and fallout samples; Mixed Company III--Environmental impact data; Ground operations summary; and Sieve Analysis of Fallout Samples.


Descriptors :   *AEROSOLS , *NUCLEAR EXPLOSION SIMULATION , *DUST CLOUDS , PARTICLE SIZE , DUST , HIGH EXPLOSIVES , CRATERS , FALLOUT , SAMPLERS , SAMPLING , AIR , AIRBORNE


Subject Categories : Armor


Distribution Statement : APPROVED FOR PUBLIC RELEASE