Method of making electro-thermal chemical cartridge

Details Method of making electro-thermal chemical cartridge Method of making electro-thermal chemical cartridge

1995-05-25

1996-05-14

Tudor, Harold J.

Ammunition and explosive-charge making

Miscellaneous

29 13, 86 23, F42B 3300

Patent

active

055157653

ABSTRACT:
An electrothermal chemical cartridge with a fuse of tapering cross section enables higher impulse energy to be imparted to a projectile by means of complete controlled burning of propellant. A long, narrow tube filled with propellant has a fuse on its inside surface with a cross section that tapers toward the discharge end, separated from the electrical ground of the cartridge casing by a layer of insulation sufficiently thin to be destroyed as the fuse ignites the propellant. A high-voltage electrode connected at the back end of the tube provides for application of a pulse of sufficient current density to ohmically heat or burn the fuse in a controlled fashion from the discharge end to the back end. Many such tubes can be bundled together in a large casing for wide barrel guns.

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