Plasma Ignition in a 30mm Cannon

Plasma ignition of conventional propelling charges has been studied in a 30 mm cannon using plasma generated in a capillary external to the charge. It is shown that the interaction distance for strong response from a propellant is limited even for this caliber that may have implications for pressure...

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Bibliographic Details
Main Authors: Beyer, Richard A, Brant, Andrew L
Format: Report
Language:English
Subjects:
Ammunition and Explosives
EXPERIMENTAL DESIGN
Explosions
GUN PROPELLANTS
Guns
IGNITION CONFIGURATIONS
INSENSITIVE EXPLOSIVES
LARGE CALIBER WEAPONS SYSTEMS
PFN(PULSE-FORMING NETWORK) POWER SUPPLY
PLASMA IGNITION
PLASMA PULSE LENGTH
PLASMA-PROPELLANT INTERACTIONS
SPARK IGNITION
SYMPOSIA
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Summary:Plasma ignition of conventional propelling charges has been studied in a 30 mm cannon using plasma generated in a capillary external to the charge. It is shown that the interaction distance for strong response from a propellant is limited even for this caliber that may have implications for pressure wave formation during ignition. The use of confinement of a portion of the charge for enhanced ignition is shown to result in the most prompt ignition. However with JA2 propellant direct action of the plasma on the charge produces good results. The effect of plasma pulse length is explored; observations that enhanced radiation from high peak power increases propellant response to plasma are discussed. A limited comparison of the response of JA2 and M30 propellants has been made. Presented at the International Symposium on Electromagnetic Launch Technology (EML) (13th), in in Potsdam, Brandenburg, Germany on 22-25 May 2006 and published in the proceedings thereof.