Observations on the Perceived Burst Size of Spherical Aerial Shells

ABSTRACT: This paper examines the effects of visual perspective on the observed size of shell bursts. The National Fire Protection Association (NFPA) codes specify minimum distances from the shell firing positions to the spectator boundaries in the United States. This paper addresses observed burst size and elevation as a function of mortar placement and spectator viewing positions, using shell burst radius and height information gathered by other researchers.

Keywords: aerial shell, burst size, display, perception, mortar placement, NFPA, spectators

Ref: JPyro, Issue 3, 1996, pp22-29
(J3_22)

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