\documentstyle{article}
\title{
   Disturbing and Resonance Phenomena in the Rotation of\\
   Artificial Satellites and their Investigation.}
\author{
                  Epishev V.\\
    UKRAINE, Uzhgorod State University}
\date{}

\begin{document}
\maketitle






    The analysis of the prolonged observations showed that the
uncontrolled artificial satellites which are dinostinguished by
their mass, size and shape can be a good indicator of different
processes in the circumterrestrial cosmic space. Any such sate     
-llite "tries to please" disturbing moments. The latter are born
by the unsymmetry of the Earth's and the Moon's gravitational
fields, the aerodynamic processes, the Earth's magnetic field, the
pressure of the Solar radiation, the reaction of the inner mobile parts
of the satellite. The difficulty in the solution of this problem is 
connected with the separation of these moments into individual
components of the resultant interaction. Researchs of the changing
of the satellite rotation period around its own center of mass,
and the Earth in the present case are insufficient.
    The definition of the orientation character of one of main
object's axes, and its changing are an important step to success.
These affirmations are caused by our experiment. We determined
the secular precession period, and the sector of the ging charac
-ter. According to the theory, the triaxial satellite will be regu   
-larly precess around the direction of the vector of the angular
momentum in the gravitional field which acting with another
field in resonance. The vector of the angular moment processes
around the perpendicular to the orbital plane.
    The obtained data concerning the character of the secular
precession allowed us to conclude about the mechanism of the influ    
-ence of the main disturbings moments in their interaction to the
satellite. For example, the Moon's effect is clearly displaying
on the rotation of the heavy satellites with the single
stereometric shape. The resistance of the Earth's atmosphere at
the dependence from the flight's altitude begins to outweigh,
if the satellite has panels of the solar cell array.
During the year seasonal changing of the rotation period has
been noticed in light satellites especially of large diameters.
The analysis of the orientation character of the satellite
"Pageos" (m=56 kg, d=32 m, H= 4000 km) , and the theoritical
calculations of the action of the all possible disturbing
moments concerning it have been carried out. The obtained
data displayed that the interaction of two disturbings
moments such as the magnetic moment, and the solar radiation 
pressure have been the cause of the seasonal changing of the
rotation period of the present satellite. This interaction
has a resonance character.
    Experimental results concerning satellites "Midas-7", "Pageos",
"Cosmos-626", satellite rocket bearer "Cosmos-546" are presented
in the paper as poster.
    The method of the orientation definition of the uncontrolled
satellites have been carried out at the Uzhgorod University.
Results of the photometric, and positional observations for the
Earth's artificial satellites are the base of the abovementioned
methods. All the experimental data have been obtained at the
Uzhgorod University.


\end{document}
