Accession Number : AD0761615

Title :   Smoke Design Criteria,

Corporate Author : NAVAL AMMUNITION DEPOT CRANE IND

Personal Author(s) : Gilliam,Clarence W. ; Bradley,Gerald S. ; Lipscomb,Charles A. , Jr

Report Date : 01 APR 1973

Pagination or Media Count : 52

Abstract : Pyrotechnic smokes have been traditionally generated from intrinsically colored dyes. The fuel mixtures used for dye sublimation have delta H-values which far exceed that needed to compliment the heats of sublimation of red, green, yellow, violet and blue dyes. Other criteria which influence the quality of smoke color and visibility are discussed in the report. From these discussions, a mathematical model which uses the Mie Theory to ascertain a multiple scattering function for particulate smoke clouds, and the Discrete Ordinate Theory which treats the multiple scattering of polychromatic light within the particulate clouds were formulated. Coupled with these two concepts is the visibility model which computes the inherent contrast of the target against background, from which one obtains the 50% probability of detection of a smoke cloud. (Modified author abstract)

Descriptors :   (*COLORED SMOKES, OPTICAL PROPERTIES), (*SMOKE MUNITIONS, *SMOKE GENERATORS), SMOKE, VISIBILITY, PARTICLE SIZE, RAYLEIGH SCATTERING, COLORIMETRY, MATHEMATICAL MODELS, DETECTION

Subject Categories : Pyrotechnics

Distribution Statement : APPROVED FOR PUBLIC RELEASE