Geomagnetic Field Energy as a Source of Thrust
Abstract
This study determines analytic solutions to the interactive net force between the dipole created by a current loop and a non-uniform expanse of the geomagnetic field. A simple dipole approximation is used for the geomagnetic field and it is assumed that the current loop can be maintained in any desired orientation. Analytic solutions are found for four different orientations: the current loop parallel to the earth's surface, the current loop perpendicular to the earth's surface, the current loop dipole parallel to the instantaneous geomagnetic field, and an inertial orientation. A hypothetical satellite current loop system is discussed and the action-at-a-distance magnetic interaction force is compared to aerodynamic drag and solar radiation pressure. The magnetic force is also compared to the force that some space thrusters produce. In terms of lifetime impulse or total impulse deliverable over one orbit, the magnetic force compares favorably to many thrusters in use today or under consideration. Keywords: Magnetic forces; Space propulsion; Geomagnetic field; Theses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1988
- Accession Number
- ADA202567
Entities
People
- Stephen R. Hildenbrandt
Organizations
- Air Force Institute of Technology