Converging constrictor for an electrothermal arcjet thruster

Power plants – Reaction motor – Electric – nuclear – or radiated energy fluid heating means

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21912148, 2191215, F03H1/00

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active

059015519

ABSTRACT:
There is provided an anode for an electrothermal arcjet thruster. A conduit running through the anode body has a converging upstream portion and a diverging downstream portion connected by a constrictor portion having a greater diameter at the interface with the upstream portion than at the interface with the downstream portion. As the result, the cross-sectional area available to a propellant gas passing through the constrictor constantly decreases and the propellent gas velocity continually increases. This constrictor geometry allows the arcjet thruster to be operated at a lower mass flow rate increasing the obtainable specific energy.

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