Accession Number : AD0492774

Title :   APPARATUS FOR OBTAINING LARGE SINGLE AND MULTIPLE SPARK SHADOWGRAPHS OF PROJECTILES AT SUPERSONIC VELOCITIES.

Descriptive Note : Memorandum rept.,

Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Fellman, S.

Report Date : 10 OCT 1947

Pagination or Media Count : 14

Abstract : The apparatus for obtaining single and multiple spark shadowgraphs of large dimensions for use in airflwo studies is described. The chief features are a point source of light of great brilliance and short photographic duration, reliable timing and triggering circuits, and a multiple (four) spark circuit employing a common spark head. (Author)

Descriptors :   (*SPARK SHADOWGRAPH PHOTOGRAPHY, HYPERVELOCITY PROJECTILES), (*PROJECTILES, SPARK SHADOWGRAPH PHOTOGRAPHY), BODIES OF REVOLUTION, CYLINDRICAL BODIES, SUPERSONIC FLOW, MAGNESIUM, ELECTRODES, STEEL, PHOTOTUBES, AMPLIFIERS, ACRYLIC RESINS, PHOTOGRAPHIC PLATES, GAS FLOW.

Distribution Statement : APPROVED FOR PUBLIC RELEASE