Methods and tools of researching some microphysical features of disperse phase of reducing visibility aerosols

Highlights

- Measuring the shape, size, particle concentration, and statistical distribution within an aerosol formation allows for the optimization of influence from the microphysical properties of the dispersed phase (DP) in aerosol obscurants.

- The reliability of particle dispersion analysis results for the DP can be achieved through the simultaneous or sequential application of various direct and indirect measurement methods, including those with different sensitivity thresholds.

Relevance. The variety of methods for studying the microphysical characteristics of aerosols and the technical means of their implementation complicates the selection of those that provide comprehensive data on DP characteristics.

Purpose of the study is to select methods and means for studying the microphysical characteristics of artificially generated aerosol DP that can be used for signature reduction.

Study base sources. Scientific and technical literature, including sources available via the global Internet.

Method. Analytical.

Results. Original classifications of the main microphysical parameters of aerosol DP were proposed, divided into three main groups (static, dynamic, and electrical parameters), along with methods for aerosol dispersion analysis based on direct and indirect measurement principles. The specifics of measuring particle size parameters, as well as methods and technical means for dispersion analysis, were examined. The applicability of these methods for studying aerosol formations in signature reduction applications was determined.

Conclusions. For the study of aerosol formations intended for signature reduction, the combined use of direct and indirect measurement methods is advisable, including static image analysis and laser diffraction analysis. Among these, a minimal set of direct and indirect measurement methods – accounting for the design features of the implementing hardware – may consist of: Phase-separation filtration (aspirator); Weighing (special-class laboratory scales); Static image analysis (microscope with soſtware for image dispersion analysis), and; Laser diffraction analysis (in a configuration with spatially separated emitters and receivers).

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