This study assessed the terminal and exterior ballistics of numerous school shooter countermeasures of convenience (COC) that may be present in a classroom or applied biomechanics laboratory. In this case study, the subject threw eight COC with maximum effort at a wall mounted force plate, with concomitant assessment with Doppler radar. Peak reaction forces and velocity of the projected objects were analyzed. Large, compared to smaller mass COC generally produced more force, but were slower to the target. Some COC produce highly variable flight characteristics likely due to forces such as surface drag, yaw, and oscillation. These forces can reduce and make variable the velocity and impact forces. Therefore, small, high density, uniform surface area, and symmetrical countermeasures may display superior ballistics and should be evaluated.
New Investigator Award
Duffin, Garrett T. and Ebben, William
"Terminal and Exterior Ballisitic Evaluation of Active Shooter Countermeasures of Convenience in a Biomechanics Classroom or Laboratory,"
ISBS Proceedings Archive: Vol. 37
, Article 61.
Available at: https://commons.nmu.edu/isbs/vol37/iss1/61