Title :
Simulation of communications through a weakly ionized plasma for a re-entry vehicle at Mach 23.9
Author :
White, Michael D.
Author_Institution :
Ohio Aerosp. Inst., Dayton, OH, USA
Abstract :
A linear dispersive model has been added to a high-order CEM solver in order to simulate radiation through the shock layer plasma over a generic re-entry vehicle at high Mach number flight. The methodology adds a differential equation for the electron current to Maxwell´s Equations. The simulation utilizes a 4th-order Runge-Kutta scheme for time and 6th-order compact-differences in space in order to minimize the number of grid points needed to solve the problem. The base electron distribution is determined by the simulation of non-equilibrium hypersonic viscous flow and is in turn used to model the plasma for the wave propagation problem.
Keywords :
Mach number; Maxwell equations; Runge-Kutta methods; differential equations; hypersonic flow; plasma electromagnetic wave propagation; radiowave propagation; space communication links; space vehicle antennas; space vehicles; Maxwell equations; base electron distribution; communications simulation; electron current differential equation; fourth-order Runge-Kutta scheme; generic re-entry vehicle; grid points; high Mach number flight; high-order CEM solver; linear dispersive model; nonequilibrium hypersonic viscous flow simulation; plasma model; re-entry vehicle speed; shock layer plasma; space sixth-order compact-differences; wave propagation problem; weakly ionized plasma; Atmospheric modeling; Difference equations; Dispersion; Electric shock; Electrons; Frequency; Maxwell equations; Plasma simulation; Plasma waves; Vehicles;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552839
