Power plants – Reaction motor – Ion motor
Reexamination Certificate
2011-04-19
2011-04-19
Michener, Joshua J (Department: 3644)
Power plants
Reaction motor
Ion motor
C315S111210
Reexamination Certificate
active
07926258
ABSTRACT:
A pulsed plasma thruster provides for an advanced lightweight design with solid propellant and predominately electromagnetic thrust in a coaxial geometry. Electromagnetic forces are generated in a plasma by current flowing from a small central electrode to an electrically conducting diverging nozzle electrode. The thruster employs a series of electric current pulses of limited duration and varying frequency between the pair of electrodes creating a series of electric arcs. The electric arcs pass over a propellant surface located between the electrodes, forming a plasma, which is then exhausted from the device to produce thrust. The thruster maintains a low plasma resistance and cavity pressure, which in turn yields strong electromagnetic body forces, resulting in a high efficiency and consistent pulse-to-pulse performance.
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Benavides Gabriel F.
Burton Rodney L.
Laystrom Julia K.
CU Aerospace, LLC
Michener Joshua J
Much Shelist
Sacharoff Adam K.
Sanderson Joseph W
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