ISRO Faced Fail in Launch on Thursday


Indian Space Research Organisation faced fail in IRNSS-1H Mission as the shield does not open up for the deployment of the satellite. Navigation satellite ‘IRNSS-1H’ was meant to augment the existing seven satellites of the NavIC constellation to give India its own GPS services.

ISRO Faced Fail in Launch on Thursday

ISRO Faced Fail in Launch on Thursday

Addressing media persons after the launch, ISRO chairman AS Kiran Kumar said the PSLV C39 stumbled in the fourth and last stage in which the launcher had to release the satellite into the orbit.

“IRNSS-1H mission has failed as the heat shield did not open up for the deployment of the satellite,” Kumar said. The shield of a satellite is meant to protect it from the heat generated by the friction against atmosphere during take-off. Once a satellite is placed in the orbit, the shield is expected to separate and fall off.

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Kiran Kumar said though all stages of the launch were carried out, the mission failed because the heat shield did not separate from the rocket. “The satellite is still inside the fourth stage of the rocket because the heat shield did not separate. We have to check the heat shield separation command and analyse what happened subsequently,’’ he said.

Former ISRO satellite centre director S K Shivakumar said: “The rocket worked till the end but it did not have the requisite velocity. It should have had a velocity of 9.5 km/sec in space but it only had a velocity of 8.5 km/sec. The signals received from the satellite after the launch is 30 decibels below optimum. If the heat shield had separated, we would have got good satellite signals.’’

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One of the reasons ISRO began development of the indigenous Indian satellite navigation system is its use for defence purposes. The system is similar to the Global Positioning System of the US, the Russian GLONASS, the European Galileo and the Chinese BeiDou.


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