Plasma generator for electrothermal gun cartridge

Details Plasma generator for electrothermal gun cartridge Plasma generator for electrothermal gun cartridge

1994-05-05

1996-08-27

Bentley, Stephen C.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

102472, F42B 508

Patent

active

055490468

ABSTRACT:
A plasma generator (44) for an electrothermal gun cartridge has elongated metallic rod and tube members (58,60) extending along a central axis thereof with the tube member (58) having at least one axial gap (62) and with an elongated annular insulator located between and in engagement with both metallic members to provide support therebetween as an electrical voltage generates an electrical arc at the axial gap to provide a plasma that ignites a propellant (46). Different embodiments of the plasma generator have a plurality of the axial gaps (62) located along the tube member (60) and are constructed for both simultaneous and sequential firing with fuses (74) controlling the timing. Helically extending member portions (78) provide rotation of the electrical arc and hence the plasma generated to distribute it for ignition of the propellent (46).

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patent: 5261315 (1993-11-01), Marinos
patent: 5444208 (1995-08-01), Mortensen
Popular Science, "Tabletop Artillery", Aug. 1992, p. 26.

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