Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Energy Analysis of Bare Electrodynamic Tethers
Año:2011
Áreas de investigación
  • Ciencias del espacio,
  • Tecnología espacial,
  • Ingeniería aeronaútica
Datos
Descripción
The design of an electrodynamic tether is a complex task that involves the control of dynamic instabilities, optimization of the generated power (or the descent time in deorbiting missions), and minimization of the tether mass. The electrodynamic forces on an electrodynamic tether are responsible for variations in the mechanical energy of the tethered system and can also drive the system to dynamic instability. Energy sources and sinks in this system include the following: 1) ionospheric impedance, 2) the potential drop at the cathodic contactor, 3) ohmic losses in the tether, 4) the corotational plasma electric field, and 5) generated power and/or 6) input power. The analysis of each of these energy components, or bricks, establishes parameters that are useful tools for tether design. In this study, the nondimensional parameters that govern the orbital energy variation, dynamic instability, and power generation were characterized, and their mutual interdependence was established. A space-debris mitigation mission was taken as an example of this approach for the assessment of tether performance. Numerical simulations using a dumbbell model for tether dynamics, the International Geomagnetic Reference Field for the geomagnetic field, and the International Reference Ionosphere for the ionosphere were performed to test the analytical approach. The results obtained herein stress the close relationships that exist among the velocity of descent, dynamic stability, and generated power. An optimal tether design requires a detailed tradeoff among these performances in a real-world scenario.
Internacional
Si
JCR del ISI
Si
Título de la revista
Journal of Propulsion And Power
ISSN
0748-4658
Factor de impacto JCR
0,847
Información de impacto
Volumen
27
DOI
Número de revista
1
Desde la página
246
Hasta la página
256
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Manuel Sanjurjo Rivo (UPM)
  • Autor: Jesus Pelaez Alvarez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Física Aplicada a la Ingeniería Aeronáutica
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