New Noise Control Engineering Study Findings Recently Were Published by Researchers at Brigham Young University

摘要

2011 APR 6 - (VerticalNews.com) -- "An indoor test facility for 20-mm and 30-mmrnaircraft Gatling guns was recently constructed at Hill Air Force Base in Layton, UT. Inrndesigning the range, the primary concerns were that the 30-mm gun muzzle blast overpressuresrnwere large enough to a) cause significant spallation of the concrete walls during the anticipatedrn20-year building usage, and b) potentially pose an auditory risk for personnel working elsewherernin the test range building," scientists in Provo, United States report.