On the control of a permanent tethered observatory at Jupiter

Pelaez Alvarez, Jesus and Scheeres, Daniel J. (2008). On the control of a permanent tethered observatory at Jupiter. In: "AAS/AIAA Astrodynamics Conference 2007", 19-23 aug 2007, Mackinac Island, Michigan. ISBN 978-0-87703-543-5. pp. 1835-1857.

Description

Title: On the control of a permanent tethered observatory at Jupiter
Author/s:
  • Pelaez Alvarez, Jesus
  • Scheeres, Daniel J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: AAS/AIAA Astrodynamics Conference 2007
Event Dates: 19-23 aug 2007
Event Location: Mackinac Island, Michigan
Title of Book: Astrodynamics 2007. Advances in the Astronautical Sciences Series
Título de Revista/Publicación: Advances in the Astronautical Sciences
Date: 2008
ISBN: 978-0-87703-543-5
ISSN: 0065-3438
Volume: 129
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Física Aplicada a la Ingeniería Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Outer planet exploration has always been handicapped by a scarcity of power. The conversion of solar energy to electricity becomes rapidly ineffective further from the Sun. Solar intensity at Jupiter, the nearest of the outer planets, is only 4% of its value at Earth. For a mission to Jupiter any extra power will allow the use of in- struments which normally cannot be deployed in space because they need too much energy. Electrodynamic tethers could be used in some missions as an alternative to produce required levels of onboard energy. This paper describes the essential dy- namical issues arising in the placement of a permanent observatory located at one of the Jupiter inner moonlets (Adrastea, Metis, Amalthea, Thebe) and sustained by an electrodynamic tether working in the generator regime. The electrodynamic tether will be deorbiting the moonlet by using its gravitational attraction; in doing so it converts the mechanical energy of the moonlet into electrical energy that can be used onboard. The aim of the work is to analyze the dynamical problem posed by such a observatory ?orbital and attitude dynamics? and also essential aspects related with its control. A feedback control law is deduced; it allows to control and stabilize the system when is operated at unstable equilibrium positions.

More information

Item ID: 52062
DC Identifier: http://oa.upm.es/52062/
OAI Identifier: oai:oa.upm.es:52062
Deposited by: Memoria Investigacion
Deposited on: 20 Mar 2019 12:55
Last Modified: 20 Mar 2019 12:55
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