12.08.92 *t09

(ii) INSAT 2A Satellite

THE MINISTER OF STATE IN THE MINISTRY OF PARLIAMENTARY AFFAIRS AND MINISTER OF STATE IN THE MINISTRY OF SCIENCE AND TECHNOLOGY, (DEPARTMENT OF ELECTRONICS AND DEPARTMENT OF OCEN DEVELOPMENT) (SHRI RANGARAJAN KUMARAMANGALAM): I am delighted to

527 Statement by Ministers INSAT-2A Satellite

inform the Honourable Members of the House that the first indigenously built second generation multipurpose geostationary satellite, INSAT - 2A has been successfully placed in its orbital position and all the payloads have been switched on.

The 1906 Kg satellite was successfully launched by the Ariane launch vehicle on 10th July 1992 and was injected into a geostationary transfer orbit. Immediately following the launch several critical manoeuvres have been carried out using the systems on board the satellite. The satellite was commanded from the INSAT Master Control Facility at Hassan in Karnataka. The satellite was first placed in a near geoynchronous orbit, nearly 36,000KM above the earth by firing the liquid apogee motor. Then the Spacecraft was allowed to move slowly towards its final orbital position at 74 Degree East longitude and all the deployments were carried out. INSAT-2A achieved its full in orbit configuration ahead of schedule, on account of the excellent performance of all the systems on board.

While the satellite was drifting towards its final orbital position, the critical deployment of the solar array was first done.

Then the two large antennas on either side of the spacecraft were released and this was followed by the controlled release and latch up of the solar boom and sail. All the deployments took place flawlessly and without any hitch. The Spacecraft was then placed in the three- axis stabilised configuration using the momentum wheels. The payload switch on commenced on 27th July. Since then all the payloads on this unique multipurpose satellite have been switched on, one by one, and have been found to be functioning normally. Trim manoeuvres were carried out and the satellite was positioned at its parking slot on 31 st July, 1992.

528 Statemet by Ministers INSAT-2A Satellite

INSAT 2A carries 18 C-band transponders including six in extended C-band, 2 high power Sband transponders, a Very High Resolution Radiometer for meteorological imaging, a Data Relay Transponder and a Search and Rescue payload. A series of extensive checks and characterisation of all the payloads has been carried out and the Spacecraft is ready for operational traffic. Phased loading of traffic in the C-band transponders commenced on 6th August, 1992 and eighth transponders have already been loaded by transferring all services from the transponders leased from ARABSAT. The Meteorological Data Utilisation Center of India Metrological Department has started receiving the cloud cover imageries and reports from Data Collection Platforms.

INSAT-2A will add capacity to the INSAT system for more long distance telecommunications circuits, business networks, teleconferencing, national and regional TV networks, messaging and data networks. The Search and distress alerts over a vast region around India for taking appropriate rescue measures.

INSAT 2A is a complex and state of the art spacecraft, and has been entirely designed and built in India with minimal imported parts and components. I am sure that Members of the House would join me in conveying our deep appreciation and heartiest congratulations to all the Scientists, Engineers, Technicians and other of the Indian Space Research Organisation and the Department of Space for the great success that they have achieved in making available INSAT 2A for national services. The country can be justifiably proud of this magnificent achievement.

529 Business of the House

13.34 hrs.

12.08.92


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