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INSAT-3DS: ISRO's meteorological satellite

Published: 22nd Feb, 2024

Context

The Indian Space Research Organisation (ISRO) successfully launched the INSAT-3DS meteorological satellite onboard a Geosynchronous Launch Vehicle (GSLV).

About

About INSAT-3DS Satellite

  • INSAT-3DS Satellite is a follow-on mission of Third Generation Meteorological Satellitefrom geostationary orbit.
  • It is designed for enhanced meteorological observations and monitoring of land and ocean surfaces for weather forecasting and disaster warning.
  • The satellite would serve various departments under the Ministry of Earth Sciences including the Indian Meteorological Department (IMD).
  • The satellite will augment the meteorological services along with the presently operational INSAT-3D and INSAT-3DR satellites.

A geostationary orbit is a high earth orbit that permits satellites to match Earth's rotation

Objectives of the mission:

The primary objectives of the mission are:

  • To monitor Earth’s surface, carry out oceanic observations and its environment in various spectral channels of meteorological importance.
  • To provide the vertical profile of various meteorological parameters of the atmosphere.
  • To provide the data collection and data dissemination capabilities from the data collection platforms (DCPs).
  • To provide satellite aided search and rescue services.

About GSLV

  • GSLV is a three-stage 51.7 m long launch vehicle with a liftoff mass of 420 tonnes.
  • First stage (GS1) comprises a solid propellant (S139) motor having a 139-tonne propellant and four earth-storable propellant stages (L40) strapons, each carrying 40 tonnes of liquid propellant.
  • Second stage (GS2) is also an earth-storable propellant stage loaded with 40-ton propellant.
  • Third stage (GS3) is a cryogenic stage with a 15-ton propellant loading of liquid oxygen (LOX) and liquid hydrogen (LH2).
  • During the atmospheric regime, the satellite is protected by Ogive payload fairing.
  • GSLV can be used to launch a variety of spacecraft capable of performing communications, navigation, earth resource surveys, and any other proprietary mission.
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