|
Server : Apache/2.4.62 System : FreeBSD fbsdweb2.web.rcn.net 14.1-RELEASE FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC amd64 User : www ( 80) PHP Version : 8.3.8 Disable Function : NONE Directory : /domains/astrosfm/AAS_meetings/1997_astro/abstracts/ |
Upload File : |
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<TITLE>Abstract AAS 97-679</TITLE>
</HEAD>
<BODY BGCOLOR="ffffff">
<h2>AAS 97-679</h2>
<h2>SATELLITE NONLINEAR ATTITUDE MOTION ABOUT AN OBLATE CENTRAL BODY </h2>
<h4> H.A. Karasopoulos - WL/FIMA and D.L. Richardson - University of Cincinnati </h4>
<h2> Abstract </h2>
The nonlinear dynamics of the planar pitch attitude motion of a gravity-gradient satellite is investigated for an elliptical polar orbit about an oblate, axially symmetric, central body. Perturbations to the attitude and orbit equations due to the oblateness of the central body are shown to significantly affect satellite pitching motion. Eccentricity, assumed constant in previous nonlinear analyses of planar pitch dynamics, varies as much as 15% for an example low altitude, Earth orbiting satellite. With this model, chaos is detected in the resultant pitching motion in regions of the phase space where previous dynamical models indicate only regular motion.