Accession Number : ADA268239
Title : Nonaerodynamic Sabot Stripper for NSWCDD 40-MM Gas Gun
Descriptive Note : Final rept.
Corporate Author : NAVAL SURFACE WARFARE CENTER DAHLGREN DIV VA
Personal Author(s) : Mock Jr , Willis, ; Holt, William H
Report Date : Nov 1992
Pagination or Media Count : 34
Abstract : A nonaerodynamic sabot stripper has been designed and implemented for use with the Naval Surface Warfare Center Dahlgren Division (NSWCDD) 40-mm smooth-bore gas gun. The stripper consists of several metal parts to stop and contain the sabot while allowing the carried object to pass unhindered through it. The single-piece sabot is stopped by impacting replaceable layers of 0.750- in.-thick aluminum and steel plates and 0.125-in.-thick rubber sheets. The metal plates and rubber sheets have 1.00- and 1.25-in.-diameter holes, respectively, for passage of the carried object. The sabot stripper is located several inches from the muzzle of the gas gun and is aligned before each shot using a special metal fixture that is inserted into the gun muzzle. Cubes measuring 0.5 in. have been launched in a flat-faced orientation; other shapes (e.g., spheres or cylinders) and orientations could also be used. Both small- and large-target configurations can be used. Small targets (up to 6-in. on a side) can be positioned in an assembly that attaches to the sabot stripper and is located several inches from it. Most small targets have been 3x3-in.plates of various thicknesses. Large targets (up to several feet on a side) are secured to a steel table that is located approximately 20 ft from the sabot stripper. Twenty-seven experiments using the sabot stripper have been performed to date; 15 using the small-target configuration and 12 using the large-target configuration. The velocity range for the experiments was from 1600 to 3100 ft/sec. The sabot stripper performed satisfactorily.
Descriptors : *GAS GUNS , *SABOTS , VELOCITY , DIAMETERS , WARFARE , IMPACT , LAYERS , HIGH VELOCITY , SHAPE , RUBBER , SPHERES , TARGETS , STEEL , SURFACES , PLATES , ALUMINUM , CONFIGURATIONS , SHEETS , METAL PLATES , DIVISION , GUN MUZZLES , FEET , ASSEMBLY , BORES
Subject Categories : Guns
Distribution Statement : APPROVED FOR PUBLIC RELEASE