Quasi-linear theory of electron density and temperature fluctuations with application to MHD generators and MPD arc thrusters.Fluctuations in electron density and temperature coupled through Ohm's law are studied for an ionizable medium. The nonlinear effects are considered in the limit of a third order quasi-linear treatment. Equations are derived for the amplitude of the fluctuation. Conditions under which a steady state can exist in the presence of the fluctuation are examined and effective transport properties are determined. A comparison is made to previously considered second order theory. The effect of third order terms indicates the possibility of fluctuations existing in regions predicted stable by previous analysis.
Document ID
19720033147
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Smith, J. M. (NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Subject Category
Propulsion Systems
Report/Patent Number
AIAA PAPER 72-101
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aerospace Sciences Meeting