. CEL 20K propellant-actuated anchor. Deep-sea moorings; Anchors. M58 primer Figure 10. Cartridge assembly for CEL 20K safe-and-arm device cartridge case (M108B1) plug/obturator M41 gun tube Figure 11. Gun and cartridge assembly for CEL 20K anchor. Functionally, as the rod touches the seafloor, the magnet located on the rod approaches the magnetic switch, which is fixed relative to the fluke, and momentarily closes it. The power source then acti- vates the S/A device which in turn detonates the cartridge. Above 50 feet firing is prevented by a hydrostatic pressure switch that interrup


. CEL 20K propellant-actuated anchor. Deep-sea moorings; Anchors. M58 primer Figure 10. Cartridge assembly for CEL 20K safe-and-arm device cartridge case (M108B1) plug/obturator M41 gun tube Figure 11. Gun and cartridge assembly for CEL 20K anchor. Functionally, as the rod touches the seafloor, the magnet located on the rod approaches the magnetic switch, which is fixed relative to the fluke, and momentarily closes it. The power source then acti- vates the S/A device which in turn detonates the cartridge. Above 50 feet firing is prevented by a hydrostatic pressure switch that interrupts the nickel cadmium battery power source, and by a hydrostatic- ally activated mechanical interlock that prevents motion of a firing pin in the S/A. Below 50 feet, upon touchdown, the power source activates a valving assembly that completes a gas flow path to the firing pin and releases the 1,100-psi nitrogen; this action then causes a 400-psi shear disk above the firing pin to rupture. After rupture, the pressure drives a firing pin either into a detonator for the ordnance S/A or directly into the M58 primer for the nonordnance reusable S/A. The original S/A device is shown in Figure 15. The base section of the S/A device, which was adapted from the Navy Signal Underwater Sound (SUS) charge, worked perfectly; however, problems were encountered with sealing the 1,100-psi nitrogen. The inflator was not a satisfactory means for sealing 11. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Taylor, R. J. Port Hueneme, Calif. : Civil Engineering Laboratory, Naval Construction Battalion Center


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