The sky is falling: Chemical characterization and corrosion evaluation of deposition produced during the static testing of solid rocket motors

► Static tests of rocket motors result in deposition of entrained soil and fuel combustion products over large areas ► Chloride is the main combustion product generated from the ammonium perchlorate-aluminum based propellant. ► Steel coupons exposed to test fire soil (TFS) deposition had higher corrosion rates than paired non-exposed coupons. ► Sites receiving more TFS deposition had higher corrosion rates.