ISRO tastes first success of 2019, places military satellite Microsat-R in orbit


  • Under a starry night and a waning gibbous moon, ISRO’s PSLV C-44 broke the silence over a brimming Pulicat lake as it lifted off from Satish Dhawan Space Centre, SHAR, to successfully place in orbit military satellite Microsat-R.
  • The mission, with a modified PSLV with just dual strap-on motors (PSLV-DL), marked another first for ISRO – it provided an alternative to its normal six strap-on motors. This will enable the rocket to carry slightly higher payloads than its Core-Alone version.
  • Towards the end of the first stage, the rocket’s plumes were white with its tail end burning bright red even as a large flock of birds passed on the horizon.
  • A second later, as the rocket soared further into the night sky, the second stage ignition burned a bright orange propelling the rocket ahead.

In low orbit:

  • Microsat-R was placed in orbit 13 and-a-half minutes after lift-off. It is the first time an Indian satellite was being placed by ISRO in a low orbit at an altitude of 274 km.
  • ISRO also used this launch as an opportunity to demonstrate the usability of the fourth stage of the rocket after the satellites are ejected into orbit. 
  • The fourth stage used to just become yet another piece of space debris.
  • However, ISRO has found a way to make use of this stage with student satellite Kalamsat, made by Space Kidz India, weighing just 1.26kg, attached to it.
  • The first mission of 2019 is a grand success.
  • Another innovation is making the fourth stage an experimental platform to do technology demonstrations and carrying out science experiments by students.

For experiments:

  • This would enable any agency that wants to conducts experiments in space to use the fourth stage till it disintegrates naturally. The fourth stage may be orbiting in space for six months to a year. ISRO is aiming to use this time-frame to enable agencies to run short time experiments.
  • Students in India to develop such satellites and ISRO would take care of the launches.
  • ISRO was developing a Small Satellite Launch Vehicle (SSLV), smaller than the PSLV.
  • The first SSLV launch would take place this year


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