Hybrid plume plasma rocket

Details Hybrid plume plasma rocket Hybrid plume plasma rocket

1987-04-13

1989-03-28

Stout, Donald E.

Power plants

Reaction motor

Ion motor

60264, 23926517, F03H 100

Patent

active

048152790

ABSTRACT:
A technique for producing thrust by generating a hybrid plume plasma exhaust is disclosed. A plasma flow is generated and introduced into a nozzle which features one or more inlets positioned to direct a flow of neutral gas about the interior of the nozzle. When such a neutral gas flow is combined with the plasma flow within the nozzle, a hybrid plume is constructed including a flow of hot plasma along the center of the nozzle surrounded by a generally annular flow of neutral gas, with an annular transition region between the pure plasma and the neutral gas. The temperature of the outer gas layer is below that of the pure plasma and generally separates the pure plasma from the interior surfaces of the nozzle. The neutral gas flow both insulates the nozzle walls from the high temperatures of the plasma flow and adds to the mass flow rate of the hybrid exhaust. The rate of flow of neutral gas into the interior of the nozzle may be selectively adjusted to control the thrust and specific impulse of the device.

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patent: 3239130 (1966-03-01), Naundorf, Jr.
patent: 3360682 (1967-12-01), Moore
patent: 3520139 (1970-07-01), Elkind et al.
patent: 4369920 (1983-01-01), Schmidt
patent: 4663932 (1987-05-01), Cox

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