The drag is reduced by a gas generator located on the base of the projectile. Once ignited, the gas generator bleeds hot gas into the projectile's wake, which causes the flow of air at the base to be less turbulent. The decrease in turbulence reduces base drag, which typically accounts for 50 percent of total drag.
The drag is decreased by a gas generator situated at the base of the projectile. Upon ignition, the gas generator releases hot gas into the projectile's trail, which results in less turbulent airflow at the base, thereby reducing base drag, typically accounting for 50 percent of total drag.