FOTON-M3 SPACECRAFT ESTIMATE OF MICROACCELERATIONS
- Paper number
IAC-08.A2.2.11
- Author
Dr. Anfisa E. Kazakova, Central Specialised Design Bureau of, Russia
- Coauthor
Prof. V.V. Sazonov, Keldysh Institute of Applied Mathematics, RAS, Russia
- Year
2008
- Abstract
The flying operation stage of the advanced spacecraft, which had greatly improved characteristics than its preceding analogue, had been concluded with the Foton-M3 S/C launch. 28 types of payload for conducting experiments in field of space-based processing and biotechnology, with the total mass of 688 kg, were installed on the Foton-M3 S/C. The Foton-M3 S/C was launched on 14 September 2007 from the launching site Baikonur and put into orbit with the following parameters: minimum altitude - 262 km; maximum altitude - 304 km; inclination - 63,0° The S/C landed on 26 September 2007 on the territory of Kazakhstan. Residual microaccelerations at the time of conducting the experiments were appraised during the S/C mission. Three-component magnetometers and high-frequency and low-frequency three-axis accelerometers were used for solving this task. All these sensors were part of DIMAC P/L. Moreover, nominal three-axis sensor of the S/C motion control system angular velocity was used. The special software was designed for processing of the sensors measuring data, including operational processing. The measuring conducted steadily practically during the whole mission. The data from DIMAC were transmitted once-twice a day. Processing of the measuring data was accomplished using the integral statistic procedure: data receiving during of making some orbital revolutions processed jointly using the least-squares method with integration of equation of the S/C motion with regard to center of mass. During the data processing, initial motion conditions and used simulator parameters were evaluated. The results of motion definition were used for microacceleration on-line computation in the areas of payload location for microgravity research. According to the results of the sensors data processing and calculation, the following information was retrieved: the Foton-M3 S/C components finite value of angular value along longitudinal axis was approximately 0,46 degree/sec, Foton-M2 S/C – 1,3 degree/sec, Foton-12 – 1degree/sec. Microaccelerations in S/C board points, which were not in center of mass small neighborhood, approximately proportionate to angle velocity squared. Thus, microaccelerations at the end of the Foton –M3 mission were 6-7 times lower than Foton M2.
- Abstract document
- Manuscript document
IAC-08.A2.2.11.pdf (🔒 authorized access only).
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