The use of refined model of aerodynamic moment in the problem of reconstruction of the <Emphasis Type="Italic">Foton</Emphasis> satellite rotational motion |
| |
Authors: | Vas V Sazonov V V Sazonov |
| |
Institution: | 1.Moscow State University,Vorob’evy gory, Moscow,Russia;2.Keldysh Institute of Applied Mathematics,Russian Academy of Sciences,Moscow,Russia |
| |
Abstract: | A new mathematical model of the uncontrolled rotational motion of the Foton satellite is presented. The model is based on the Euler dynamic equations of rigid body motion and takes into account the
action upon the satellite of four external mechanical moments: gravitational, restoring aerodynamic, moment with constant
components in the satellite-fixed coordinate system, and moment arising due to interaction of the Earth’s magnetic field with
the satellite’s proper magnetic moment. To calculate the aerodynamic moment a special geometrical model of the outer satellite
shell is used. Detailed form of the formulas giving above-mentioned moments in the equations of satellite motion is agreed
with the form of the considered motion. Model testing is performed by determining with its help the rotational motion of the
Foton M-2 satellite (it was in orbit from May 31, 2005 to June 16, 2005) using the data of the onboard measurements of the Earth’s
magnetic field strength. The use of the new model has led to a relatively small improvement in the accuracy of the motion
determination, but allowed us to obtain physically real estimates of some parameters. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|