Daily Current Affairs for UPSC Civil Services Exam – 18 December 2020

In Today’s News:

  1. PSLV C50/CMS01 satellite launched.

1. PSLV C50/CMS01 satellite launched

News Summary

India’s communication satellite CMS-01 was successfully launched by PSLV-C50 on December 17, 2020, from the Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. PSLV-C50 is the 52nd flight of PSLV and the 22nd flight of PSLV in ‘XL’ configuration (with 6 strap-on motors).

Prelims GS – Science & Technology(Space Technology)

(Note: Latest space advancements are important for both Prelims and Mains)

  • CMS-01 is a communication satellite envisaged for providing services in the Extended-C Band of the frequency spectrum.
  • The Extended-C Band coverage will include the Indian mainland, Andaman-Nicobar & Lakshadweep Islands.
  • CMS-01 is the 42nd Communication Satellite of India.
  • Polar Satellite Launch Vehicle (PSLV) is the third generation launch vehicle of India.
  • It is the first Indian launch vehicle to be equipped with liquid stages.
  • The PSLV vehicle successfully launched two spacecraft – Chandrayaan-1 in 2008 and Mars Orbiter Spacecraft in 2013 – that later traveled to Moon and Mars respectively.
  • PSLV earned its title ‘the Workhorse of ISRO’ through consistently delivering various satellites to Low Earth Orbits, particularly the IRS series of satellites.
  • It can take up to 1,750 kg of payload to Sun-Synchronous Polar Orbits of 600 km altitude.
  • Due to its unmatched reliability, PSLV has also been used to launch various satellites into Geosynchronous and Geostationary orbits, like satellites from the IRNSS constellation.
  • PSLV uses 6 solid rocket strap-on motors to augment the thrust provided by the first stage in its PSLV-G and PSLV-XL variants.
  • First Stage:-
    • PSLV uses the S139 solid rocket motor that is augmented by 6 solid strap-on boosters.
  • Second Stage:-
    • PSLV uses an Earth storable liquid rocket engine for its second stage, known as the Vikas engine, developed by Liquid Propulsion Systems Centre.
  • Third stage:-
    • The third stage of PSLV is a solid rocket motor that provides the upper stages high thrust after the atmospheric phase of the launch.
  • Fourth stage:-
    • The PS4 is the uppermost stage of PSLV, comprising of two Earth storable liquid engines.

Click here to know more about PSLV on the ISRO website.



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