A dynamic simulation model is developed and employed in a new system study to investigate the performance of electrodynamic tethers, both as power generators and thrusters. The electron collection performance of a contactor and a bare wire tether, both separately and in combination, are compared and contrasted. The power and thrust generated by a bare wire tether is found to have a higher dependence on the geomagnetic and ionospheric fluctuations. However, depending on the performance of the contactor, the combination of a bare tether and contactor can substantially boost performance for power generation. As a pure thruster, the contactor tether is examined at constant current, voltage, thrust, and power. It is found that the best mode of operation is with constant power, with resulting power/thrust ratios better than those for ion or magnetoplasmadynamic engines. It is concluded that tethers offer greater potential than previously envisioned. 13 refs.
[1]
Michael E. Baginski,et al.
Electrodynamics of the Getaway Tether Experiment
,
1989
.
[2]
Yi Lin,et al.
A Systems Study:: The Comparisons of “Whole” and “Parts”
,
1992
.
[3]
Daniel E. Hastings,et al.
Plasma contactors for use with electrodynamic tethers for power generation
,
1988
.
[4]
Daniel E. Hastings,et al.
Theory of Plasma Contactor Neutral Gas Emissions for Electrodynamic Tethers
,
1992
.
[5]
Daniel E. Hastings,et al.
The radiation impedance of an electrodynamic tether with end connectors
,
1987
.
[6]
Daniel E. Hastings,et al.
Theory of plasma contactors in ground-based experiments and low Earth orbit
,
1990
.
[7]
A. Barnett,et al.
Radiation of plasma waves by a conducting body moving through a magnetized plasma
,
1986
.