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Performance Theory of Diagonal Conducting Wall Magnetohydrodynamic AcceleratorsThe theoretical performance of diagonal conducting wall crossed-field accelerators is examined on the basis of an infinite segmentation assumption using a cross-plane averaged generalized Ohm s law for a partially ionized gas, including ion slip. The desired accelerator performance relationships are derived from the cross-plane averaged Ohm s law by imposing appropriate configuration and loading constraints. A current-dependent effective voltage drop model is also incorporated to account for cold-wall boundary layer effects, including gasdynamic variations, discharge constriction, and electrode falls. Definition of dimensionless electric fields and current densities leads to the construction of graphical performance diagrams, which further illuminate the rudimentary behavior of crossed-field accelerator operation.
Document ID
20040171926
Acquisition Source
Marshall Space Flight Center
Document Type
Technical Publication (TP)
Authors
Litchford, R. J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 7, 2013
Publication Date
May 1, 2004
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
M-1107
NASA/TP-2004-213173
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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