PSLV-C51, ISRO Launches 1st Commercial Mission For NSIL – Free PDF

What has happened?

  • The Indian Space Research Organisation (ISRO) launched 19 satellites on Sunday as part of the first dedicated commercial PSLV mission for its commercial company NewSpace India Limited (NSIL).
  • The PSLV-C51/Amazônia-1 mission carry Brazil’s Amazônia-1 as the primary payload, along with 18 other guest satellites, including five Indian satellites. 
  • ISRO’s first launch of 2021 and the 53rd flight of the PSLV

NewSpace India Limited (NSIL)

  • According to ISRO, the PSLV-C51/Amazônia-1 mission is the first dedicated commercial PSLV mission for the commercial company NewSpace India Limited (NSIL), which was set up in March 2019 under the Department of Space.
  • The NSIL facilitated the mission through a commercial agreement with the American company Spaceflight Inc.
  • The rocket will fly in its DL configuration, with two solid strap-on boosters.
  • PSLV-C44 on 24 January 2019 was the first flight to use PSLV-DL variant
  • NSIL is the commercial arm of Indian Space Research Organisation (ISRO) with the primary responsibility of enabling Indian industries to take up high technology space related activities and is also responsible for promotion and commercial exploitation of the products and services emanating from the Indian space programme.
  • To satisfy the needs of its customers, NSIL draws upon the proven heritage of the Indian Space Program and ISRO’s vast experience in diverse branches of Space Technology.
  • The major business areas of NSIL include:
  1.  Production of Polar Satellite Launch Vehicle (PSLV) and Small Satellite Launch Vehicle (SSLV) through industry;
  2.  Production and marketing of space-based services, including launch services and space-based applications like transponder leasing, remote sensing and mission support services;
  3.  Building of Satellites (both Communication and Earth Observation) as per user requirements.
  4.  Transfer of technology developed by ISRO centres/ units and constituent institutions of Dept. of Space;
  5.  Marketing spin off technologies and products/ services emanating out of ISRO activities
  6.  Consultancy services


  • Amazônia-1 or SSR-1, for Satélite de Sensoriamento Remoto-1 in Portuguese, is the first earth observation satellite to be developed fully by Brazil.
  • It was designed, integrated, tested, and will be operated fully by the National Institute for Space Research in Brazil.
  • It weighs 637 kg and carries a wide field imaging camera with a resolution of 60 m over an 850-km swath of area.

Engraved picture of Modi

  • There are five Indian satellites flying on the rocket.
  • The Satish Dhawan SAT (SDSAT) is a nano satellite that will study space weather, magnetosphere, radiation levels, as well as aid in long-range communication.
  • It was built by Space Kidz India, which has also included an engraved picture of Prime Minister Narendra Modi on the top panel of the satellite as well as Bhagavad Gita in a flash.
  • Space Kidz India said they put the picture of PM Modi to “show solidarity and gratitude for his Atmanirbhar initiative and Space privatisation”, and enabling ISRO facilities to open up to private players.
  • The Bhagavad Gita was included to honor the “supreme epic of India” and the idea of ‘Vasudeva Kutumbakam’.
  • UNITYsat is a combination of three satellites that were built by — Jeppiaar Institute of Technology in Sriperumbudur, Tamil Nadu, GH Raisoni College of Engineering in Nagpur, and Sri Shakthi Institute of Engineering and Technology in Coimbatore.
  • These satellites will provide radio relay services. 
  • Sindhu Netra is a defence satellite that was built by Hyderabad-based Imarat research centre, which is a part of DRDO.
  • The satellite will assist in identifying suspicious ships.

Other satellites

  • Among the 18 satellites is also the SAI-1 NanoConnect-2, which is a fully Mexican satellite developed by Institute of Nuclear Sciences of the National Autonomous University of Mexico.
  • There will also be on board 12 pico satellites by Swarm Technologies, US, called SpaceBees (Basic Electronic Elements).
  • These are the world’s smallest two-way communications satellites that are meant to provide  and data relay.

Q) Which of the following satellites are launched by PSLV?

  1. Chandrayan 1
  2. Chandrayan 2
  3. GSAT – 6
  4. Mangalyaan
  5. Astrosat
  1. 1,2,3
  2. 1,4,5
  3. 2,3,5
  4. 1,3,4




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