Mortar blast attenuator diffuser

摘要

An orifice entry diverging multi vane conical venturi diffuser (10) for a mortar tube (36) that provides a surface at the discharge end of a mortar tube (36) for measuring or sensing instruments. The internal vanes (16) comprise the primary surface (18) and the conical venturi wall comprises the secondary surface (20). This apparatus allows a solid object of the equivalent diameter of the entry orifice (12) when propelled by gas pressure to travel through the diffuser (10) into the open atmosphere while at the same time providing an increasing volumetric flow path for the discharge of the propellant gas. The vanes axial parallel primary surface area (18) is used to provide a port (24) for instrumentation. The area between the primary and secondary surfaces of circumferentially spaced vanes (16) provides the gas flow channels (40) when the center section formed by the vanes primary surfaces (18) is obstructed by a solid object with the equivalent diameter of the entry orifice (12).