ISRO- 4 Months of Endeavours, Launches 100th Satellite

ISRO had brushed off misconceptions of wrecking explaining the failure existed due to a tiny but vital equipment of the rocket had failed, due to which its  protective heat shield could not be separated.

ISRO’s 4 months of strenuous efforts paid off . it successfully launched India’s 100th satellite along with 30 others. The Polar Satellite Launch Vehicle or PSLV lifted off at 9.29 am from Sriharikota in Andhra Pradesh. scientists gasped in relief when they detected the the failing of the key component from august. The lift-off was postponed by a minute because of fear of collision with space debris. The last launch of IRNSS-1H – India’s first privately built satellite — on August 31 last year had failed because of a freak accident. This is the 42nd flight of the PSLV.

          Here are 10 facts about the satellite.

  • The 30 other satellites the PSLV carried today includes two other satellites from India and 28 satellites from six countries — Canada, Finland, France, Korea, the United Kingdom and the United States.
  • Scientists said the mission will be a unique one, since the satellites will be launched in two orbits. Thirty of the satellites were launched in an orbit 550 km about, and one 359-km above the Earth.
  • This was done through what scientists call the “multiple burn technology” under which the rocket’s engine is switched off and then switched on to control its height.
  • The whole process of lift-off and the placing of satellites in two orbits takes 2 hours 21 minutes — the longest so far. The 28-hour countdown for the launch of the PSLV started at 5.29 am on Thursday.
  • The 710-kg earth observation satellite the PSLV is carrying is the third in the Cartosat 2 series. The last satellite of the series had been launched successfully in June 2016.
  • ISRO had brushed off speculations of sabotage after the last satellite launch failure. Scientists said a tiny but vital equipment of the rocket had failed, due to which its protective heat shield could not be separated.
  • The heat shield of a satellite is meant to protect it from the heat generated by the friction against atmosphere during take-off.
  • The IRNSS-1H was expected to replace one of the seven orbiting satellite of NAViC. Its launch became necessary after three atomic clocks of one satellite started malfunctioning. Atomic clocks provide navigational data, and they are crucial for a Global positioning system.
  • NAViC, a system of seven satellites, powers India’s powerful homegrown Global Positioning System.
  • ISRO’s workhorse PSLV rocket weighs nearly 320 tonnes and stands up to 44.4 meters, equivalent to a 15-storey building.

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