Time-delayed gun bore evacuator

摘要

A bore evacuator for a gun tube may include a time-delayed discharge valve. The time-delayed discharge valve may open substantially simultaneously with the opening of the breech of the gun tube. Gas discharged from the bore evacuator may evacuate the bore of the gun tube. The time delay of the time-delayed discharge valve may be activated by gas pressure in the bore evacuator. The bore evacuator may include a pressure-regulating valve for regulating the maximum pressure in the bore evacuator.