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Safe Switching of the GRACE Formation using an Eccentricity/Inclination Vector Separation;

Kirschner, M. and Montenbruck, O. and D´Amico, S. (2004) Safe Switching of the GRACE Formation using an Eccentricity/Inclination Vector Separation;. 18th Intern. Symposium on space Flight Dynamics, 11-15 Oct. 2004, Munich.

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Abstract

After more than two years in orbit, a longitude swap maneuver is required to exchange the leading and trailing spacecraft of the GRACE formation. While the two satellites are nominally separated by about 200km in along-track direction, a close encounter will take place during the swap sequence. Based on the successful use for co-location of geo-stationary satellites, the concept of eccentricity/inclination vector separation is suggested for safe proximity operations in this mission phase. Taking care of the natural evolution of the relative orbital elements of GRACE 1 and 2, optimum maneuver dates are identified. By proper timing of the maneuvers a safe limit for the minimum distance during the encounter can then be guaranteed even in case of arbitrary thruster performance errors. This allows the use of a fuel optimal maneuver sequence with single drift start and stop maneuvers.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2005,
Title:Safe Switching of the GRACE Formation using an Eccentricity/Inclination Vector Separation;
Authors:
AuthorsInstitution or Email of Authors
Kirschner, M.UNSPECIFIED
Montenbruck, O.UNSPECIFIED
D´Amico, S.UNSPECIFIED
Date:2004
Status:Published
Event Title:18th Intern. Symposium on space Flight Dynamics, 11-15 Oct. 2004, Munich
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Space Operations and Astronaut Training > Hauptabteilung Raumflugbetrieb und Astronautenausbildung
Deposited By: Sabine Klaas
Deposited On:16 Sep 2005
Last Modified:14 Jan 2010 17:32

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