Weekly Current Affairs

GSLV puts satellite in precise orbit [S&T]

  • A last-minute delay due to an anomaly in the indigenous cryogenic upper stage of the GSLV-F05 gave some anxious moments to ISRO officials, but this did not deter them from putting the INSAT-3DR, an advanced weather satellite with four payloads, into a precise Geosynchronous Transfer Orbit (GTO).
  • It marked a hat-trick of successful launches for the Geosynchronous Satellite Launch Vehicle. This is the third consecutive flight of the GSLV Mark II with our indigenous cryogenic upper stage engine.
  • The INSAT-3DR carries four payloads. It carries a multi-spectral Imager, one of the four payloads. It will generate images of the Earth from a geostationary altitude of 36,000 km every 26 minutes and provide information on parameters such as sea surface temperature, snow cover, cloud motion winds, among others.
  • The second payload, a 19 channel sounder, will provide information on the vertical profiles of temperature, humidity and integrated ozone while the Data Relay Transponder will provide service continuity to ISRO’s previous meteorological missions.
  • The Search and Rescue payload can pick up and relay alert signals originating from the distress beacons of maritime, aviation and land-based users to the Indian Mission Control Centre (INMCC).
  • The major users of service will be the Indian Coast Guards, Airports Authority of India (AAI), Directorate General of Shipping, Defence Services and fishermen.
  • The Indian service region will cover a large part of the Indian Ocean and will also include Bangladesh, Bhutan, Maldives, Nepal, Seychelles, Sri Lanka and Tanzania for providing distress alert services.