Goel, P. S. ; Nagabushanam, S. ; Murugesan, S. ; Patnaik, M. M. M. (1982) The attitude control system of the satellite for earth observation 'Bhaskara' Sadhana (Academy Proceedings in Engineering Sciences), 5 (1). pp. 1-27. ISSN 0256-2499
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Official URL: http://www.ias.ac.in/j_archive/sadhana/5/1/SA00501...
Related URL: http://dx.doi.org/10.1007/BF02843100
Abstract
The satellite for earth observation (Bhaskara) launched on 7 June 1979 has two TV cameras and a passive microwave radiometer for earth resources survey and meteorological studies respectively. As it had to be a minimally modified version of the earlier spin-stabilised satellite Aryabhata, it is configured as a spin-stabilised satellite, with a spin rate of between 6 to 11 rev/min and a spin axis perpendicular to the orbital plane within 3° . The cold gas system of Aryabhata was modified to provide a low and controlled thrust for spin-up and spin-axis orientation operations. Two horizon-crossing sensors are used for automatic spin-axis control and attitude determination on ground. This paper presents a report on the system evolution, design, simulation and on-orbit performance of Bhaskara.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Indian Academy of Sciences. |
| Keywords: | Horizon-Crossing Sensors; Nutation Damper; Magnetic Bias Coil; Attitude Control System; Satellite; Bhaskara |
| ID Code: | 13093 |
| Deposited On: | 11 Nov 2010 04:59 |
| Last Modified: | 02 Jun 2011 08:28 |
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