ATTITUDE STABILITY OF DEBRA-DELP SATELLITES IN CIRCULAR ORBIT

Citation
Mt. Aygun et U. Daybelge, ATTITUDE STABILITY OF DEBRA-DELP SATELLITES IN CIRCULAR ORBIT, Journal of guidance, control, and dynamics, 21(6), 1998, pp. 965-970
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Instument & Instrumentation","Aerospace Engineering & Tecnology
ISSN journal
0731-5090
Volume
21
Issue
6
Year of publication
1998
Pages
965 - 970
Database
ISI
SICI code
0731-5090(1998)21:6<965:ASODSI>2.0.ZU;2-L
Abstract
DeBra-Delp satellite refers to a particular attitude with respect to t he orbital coordinates of certain rigid three-axis satellites. The att itude stability of such a satellite placed on a circular orbit, exampl es of which can be found among natural and artificial satellites, is e xamined. As is well known, linearized techniques for the stability of the particular equilibrium of the named satellites have been inconclus ive because no Lyapunov function for them was found. Our aim is to dem arcate a region in the parameter space (T-1, T-2) defined by the momen ts of inertia, where the equilibrium of DeBra-Delp satellites is stabl e. This aim is achieved using and contrasting both analytical and nume rical solutions and analyzing nonlinear characteristics of the problem . The analytical approach used is based on Tkhai's theorem, which repr esents an extension of the KAM theory and provides a sufficient criter ion for stability.