Mathematics – Logic
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010sosyr..44..409k&link_type=abstract
Solar System Research, Volume 44, Issue 5, pp.409-416
Mathematics
Logic
Scientific paper
Several of the most fundamental and feasible geophysical problems partially related to the Phobos-Grunt mission have been analyzed based on the available works. The assumed results will form the informational basis for the development of the cosmogony of planets’ small satellites and asteroids. Correspondingly, the aims of the experiment are to study the internal structure and energy state of Phobos; to analyze the manifestation of pulsed effects and fields, including the registration of seismic signals and wave fields of Phobos; and to measure the long-period oscillations on the surface of Phobos in the range of 10-5-10 Hz. Studying Phobos gives an example of specific problems peculiar to small bodies of the Solar System: specific features of cratering, grooves, and morphological structures. The registration of gas-dust streams extends the knowledge of the space-time structure of the Solar System and its objects and processes and will confirm that stellar systems can constantly interact. The physical principles of the registration of seismic fields and signals are briefly described, and the instrumental basis for cosmogonic seismology is comparatively presented. It has been indicated that the piezoelectric and electrodynamic systems of the desired signal registration complete each other, and it is desirable to use both systems if 2- and 3-D registration systems are applied. The seismometric instrumentation of the Phobos spacecraft has been considered. The device’s physical characteristics, block diagrams, energy consumption, and information content are presented. The seismoacoustic (HF) device unit and its advantages during the registration of very weak signals owing to the use of the mechanical transformer effect are described in more detail. The seismic system created can ensure the solution of the scientific problems of the mission to Phobos, including the study of the internal structure, origin, depth structures, and external impacts of the field, corpuscular, and micrometeorite types.
Khavroshkin Oleg B.
Tsyplakov Vladislav V.
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