The COEP Satellite (SWAYAM)is a reliable bidirectional communications platform. Started in late 2008, the SWAYAM project revolved around the challenges of building a pico-satellite destined to orbit the Earth at a height of 515 km.
With a total weight of 990 grams and the volume restricted to around 100 x 100 x 113.5 mm, making it the smallest Indian to be launched, the cube shaped satellite demanded an innovative approach at every design phase, from screening of components in order to fit the stringent mass budget to the selection of suitable electronic devices which honour the mere 2 W of power produced by the solar panels. With this in mind, the team devised an ingenious passive stabilization system which employed a pair of hysteresis rods and a magnet to stabilize the satellite thus eliminating the need to use bulky and power hungry magnetorquers. This Passive Attitude Control System of SWAYAM is the first of its kind in India. The satellite housed a payload capable of half duplex communication over the HAM frequency band which enabled it to receive, store and transmit messages from one corner of the globe to the other. The team has also established a functional Ground Station and tracks many amateur radio satellites.
Acting as a platform which enables the students to empirically test their knowledge has always been the corner stone of this project. Right from its inception, the team has been strongly supported by the college on all fronts, providing valuable infrastructure and a strong funding to keep the project alive. The environmental tests on the Qualification model were successfully completed in June 2014.
The team successfully cleared the Critical Design Review (CDR) at ISAC, Bangalore on 17th September 2014. All the subsystem designs and results were presented and approved by the committee. The team got a clearance for going ahead with the Flight Model of Swayam.
The team completed the Flight Model assembly and Environmental tests on it at ISAC.
The Flight Model was handed over to ISRO. Swayam was launched successfully on 22nd of June 2016 along with ISRO’s CARTOSAT-2C by Polar Satellite Launch vehicle PSLV-C34 thus making it the 4th student satellite from India to be launched.
We are grateful to have support of ISRO for reviewing our work and also to GMRT and NCRA for providing testing facilities for evaluating communication system.
We are also grateful to VSSC for mechanical testing facilities and ARAI for vibration testing facility.