148 citations · 467 across the 44 of their papers we have counts for
45 papers
Effects of Sound Suppressors on Muzzle Velocity, Bullet Yaw, and Drag
Elya Courtney, Roy Couvillion, Amy Courtney +1
Little has been published regarding whether and how sound suppressors impact bullet flight, including velocity, bullet yaw, and drag. These parameters were compared for four differ…
Secrets of Successful Science Projects
Amy Courtney, Michael Courtney
Over the past several years, the authors have served as teachers, qualified scientists, mentors, and/or parents on dozens of science projects. These projects ranged from elementary…
Terminal Performance of Lead-Free Pistol Bullets in Ballistic Gelatin Using Retarding Force Analysis from High Speed Video
Elijah Courtney, Amy Courtney, Lubov Andrusiv +1
Due to concerns about environmental and industrial hazards of lead, a number of military, law enforcement, and wildlife management agencies are giving careful consideration to lead…
Experimental Tests of the Proportionality of Aerodynamic Drag to Air Density for Supersonic Projectiles
Elya Courtney, Amy Courtney, Michael Courtney
Pure theory recognizes the dependence of supersonic drag coefficients on both Mach number and Reynolds number, which includes an implicit dependence of drag coefficient on air dens…
Comparing Terminal Performance of .357 SIG and 9mm Bullets in Ballistic Gelatin Using Retarding Force Analysis from High Speed Video
Elizabeth Keys, Amy Courtney, Michael Courtney
High-speed video has emerged as an valuable tool for quantifying bullet performance in ballistic gelatin. This paper presents the results of testing four .357 SIG bullets using hig…
Device for Underwater Laboratory Simulation of Unconfined Blast Waves
Elijah Courtney, Amy Courtney, Michael Courtney
Shock tubes simulate blast waves to study their effects in air under laboratory conditions; however, few experimental models exist for simulating underwater blast waves that are ne…