Electrostatic ion thruster with improved thrust modulation

Details Electrostatic ion thruster with improved thrust modulation Electrostatic ion thruster with improved thrust modulation

1987-12-11

1989-06-13

Casaregola, Louis J.

Power plants

Reaction motor

Ion motor

60204, 31511181, F02C 100

Patent

active

048380210

ABSTRACT:
An ion propulsion system is disclosed. The invention includes a ionizing system for ionizing a gaseous propellant within a chamber to produce a plasma. The ionizing system includes a cathode 14 to provide a source of electrons and anodes 11 and 13 to accelerate the electrons to velocitites sufficient to ionize the gaseous propellant. The invention further includes an ion extraction system 20 for expelling an ion beam from the plasma. A particularly novel aspect of the invention is the provision of a control system 45 and 46 for modulating the current of the ion beam by modulating the current through the anode 11 and 13.

REFERENCES:
patent: 3279176 (1966-10-01), Boden
patent: 3952228 (1976-04-01), Reader et al.
patent: 4318028 (1982-03-01), Perel et al.
patent: 4454453 (1984-06-01), Sagawara

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