Ammunition and explosives – Powder form – Rocket propellent grain
Reexamination Certificate
2011-06-14
2011-06-14
Bergin, James S (Department: 3641)
Ammunition and explosives
Powder form
Rocket propellent grain
C102S202500, C102S202000, C060S256000
Reexamination Certificate
active
07958823
ABSTRACT:
A thruster stack assembly and method for manufacturing the same is provided. The thruster stack assembly includes a plurality of grain elements having a common core region (e.g., a channel or passageway), where each grain element comprises a volume of electrically ignitable propellant. The thruster stack assembly further includes electrodes associated with the plurality of grain elements, the electrodes adapted for selectively igniting the plurality of grain elements. In one example, one or more of the grain elements may be ignited and combusted without igniting or damaging adjacent grain elements of the stack. The core region serves to channel combustion gases and exhaust from the thruster stack. Multiple stacks may be assembled together to form three-dimensional thruster arrays.
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Bergin James S
Morrison & Foerster / LLP
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