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  • 1
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    Plasma-gas interactions studies in a hybrid plume plasma rocket (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: Plasma-gas interaction was investigated and the basic mechanisms for energy and particle transport. The solution approach assumes cylindrical geometry and includes a multiplicity of atomic reactions, and the presence of a strong magnetic field is described. The principal reactions are electron and ion impact ionization, and charge exchange between hot ions and cold neutrals. Radial particle and energy transport is mainly by diffusion. A modified Bohm diffusion model for plasma in the core of the plume, and classical neutral particle diffusion in the cooler regions of the flow are presented. Neutrals are allowed to free stream in the low density regions, where the collision mean-free-path becomes comparable, or even larger than the characteristic dimensions of the system.
    Keywords: PLASMA PHYSICS
    Type: AFOSR The 1985 AFOSR(AFRPL Chem. Rocket Res. Meeting; 2 p
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    A tandem mirror plasma source for hybrid plume plasma studies (1985)
    In:  Other Sources
    Details
    Publication Date: 2019-01-25
    Description: A tandem mirror device to be considered as a hot plasma source for the hybrid plume rocket concept is discussed. The hot plamsa from this device is injected into an exhaust duct, which will interact with an annular hypersonic layer of neutral gas. The device can be used to study the dynamics of the hybrid plume, and to verify the numerical predictions obtained with computer codes. The basic system design is also geared towards low weight and compactness, and high power density at the exhaust. The basic structure of the device consists of four major subsystems: (1) an electric power supply; (2) a low temperature, high density plasma gun, such as a stream gun, an MPD source or gas cell; (3) a power booster in the form of a tandem mirror machine; and (4) an exhaust nozzle arrangement. The configuration of the tandem mirror section is shown.
    Keywords: PLASMA PHYSICS
    Type: AFOSR The 1985 AFOSR(AFRPL Chem. Rocket Res. Meeting; 3 p
    Format: text
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    NASA TECHNICAL REPORTS
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