Accession Number : ADA181924

Title :   Factors for MPD Thrustors.

Descriptive Note : Annual rept. 15 Dec 83-14 Dec 84,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE SPACE SYSTEMS LAB

Personal Author(s) : Martinez-Sanchez,Manuel

PDF Url : ADA181924

Report Date : 01 May 1986

Pagination or Media Count : 149

Abstract : The work resulted in: (a) A generalization of the classical anode depletion theory of onset to conditions below onset, giving insights as to anode drops and flow rearrangements; (b) Analytical results describing the current concentration at cathode roots due to the Hall effect, and also the axial voltage distribution in a segmented thruster with suppressed axial current; (c) Completion of our study on local plasma stability, with the conclusion that damping, mostly due to heat conduction makes is unlikely that onset can be due to a local instability. Work was initiated on a theory of flow in contoured channels. Keywords: Magnetoplasma dynamic thrusters; Electric propulsion.

Descriptors :   *HALL EFFECT, *ELECTRIC PROPULSION, *MAGNETOHYDRODYNAMICS, *PLASMA ENGINES, ANODES, DEPLETION, THEORY, AXES, SPATIAL DISTRIBUTION, VOLTAGE, DAMPING, STABILITY, PLASMAS(PHYSICS), THRUSTERS, SUPPRESSION, CHANNELS, CONTOURS, THERMAL CONDUCTIVITY, SEGMENTED, FLOW

Subject Categories : Electric and Ion Propulsion

Distribution Statement : APPROVED FOR PUBLIC RELEASE