Cita
Onishi, Tatsuo; Martínez-Sánchez, Manuel; Cooke, D.L. y Sanmartín Losada, Juan Ramón
(2002).
Effect of magnetic field on current colection on bare tether in LEO.
En: "38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit", 7 - 10 Jul 2002, Indianapolis, Indiana. ISBN 978-1-62410-115-1.
Resumen
An eiectrodynamic Tether is a long thin conductive string deployed from a spacecraft. A part of the ED tether near one end, which is rendered positive by the Electromotive force (EMF)along the tether, collects electrons from the ambient plasma. In the frame of reference moving with theter, ions flow toward the tether, get deflected near the
tether by its high positive potential and create a wake. Due
to the asymmetry of plasma distribution and the weak but significant Geomagnetic field, the conventional probe theory becomes almost inapplicable. Computational work for the prediction of current collection is thus necessiated.. In this paper, we analyze effects of magnetic field on velocity distribution funtion at a point that is far from the tether, and discuss a new way to treat electrons at computational boundary. Three cases with different magnetic field are simulated and compiled so as to provide a part of
the pre-flight prediction of the space experiment by NASA ProSEDS, which is planned September 2002.
