Pall of gloom hits ISRO, after first launch with private sector involvement fails

 In a setback, India's mission to launch its eighth navigation satellite where the private sector was involved for the first time in the assembly of its spacecraft failed today following a technical snag after a perfect lift off of its polar rocket.

Describing the failed mission as a 'mishap', ISRO Chairman Kiran Kumar said the heat shield did not separate for the IRNSS-1H, a backup navigation satellite, to be put into orbit in the final leg of the launch sequence. As a result, the satellite got stuck in the fourth stage of the Polar Satellite Launch Vehicle--PSLV-C39.

"Today the launch mission has not succeeded. While all the systems of the launch vehicle performed extremely well, we had a mishap. Heat shield has not separated," said the chief of the Indian Space Research Organisation(ISRO), shortly after the satellite failed to separate as scheduled about 20 minutes after the lift-off.
The eighth satellite was a back-up navigation satellite for IRNSS-1A, one of the seven satellites in the constellation, as its three rubidium atomic clocks on board had stopped functioning.

For the first time, the private sector has been actively involved in assembling and testing of a satellite unlike earlier where its role was limited to supplying components.

Today's setback is considered a rare failure in India's space mission involving the PSLV, dubbed as ISRO's workhorse, which has had a time-tested record of 39 consecutive successful launches, ever since its maiden flight failed 24 years ago.

On September 20, 1993, the first development flight PSLV-D1 was unsuccessful in launching the IRS-1E remote sensing satellite into orbit.

Today's PSLV launch was the third this year with everything appearing normal from the lift-off at 7 pm till the rocket reached the fourth stage where it is supposed to inject the satellite into orbit.

However, the expected sequence did not happen and the Mission Director and other senior ISRO scientists were seen in a sombre mood, indicating all was not well.

After the Mission Director declared that the heat shield had not separated, Kiran Kumar officially announced that the mission was unsuccessful.

"We are looking into the details of what has happened and we will do the analysis and subsequently come back with the details," Kumar later told reporters.

At this point of time, the basic thing was everything -- the launch vehicle, first stage, second stage, third stage, fourth stage, separation part and all the events performed normally, he said.

"Because the heat shield is not separated, the satellite remainins inside the fourth stage and even satellite separation also we could see from the camera images that the satellite is moving inside the enclosure. So this mission has been an unsuccessful mission," Kumar said.

Earlier, at the end of the 29-hour countdown that began yesterday, the 44-metre tall PSLV-C39 lifted off majestically at the scheduled time of 7 pm from the second launch pad of the Satish Dhawan Space Centre at this spaceport, about 100 km from Chennai.

ISRO had earlier launched seven satellites - IRNSS-1G on April 28, 2016, IRNSS-1F (March 10, 2016), IRNSS-1E (January 20, 2016), IRNSS-1D (March 28, 2015), IRNSS-1C (October 16, 2014), IRNSS-1B (April 4, 2014) and IRNSS-1A on July 1, 2013.

According to ISRO, the total cost of all the seven satellites was estimated at Rs 1,420 crore.

The Indian Regional Navigation Satellite System (IRNSS) is an independent regional navigation satellite system developed by India on par with US-based GPS.
Russia has 'Glonass' while 'Galileo' is by Europe.
These satellites offer services like terrestrial and marine navigation, disaster management, vehicle tracking and fleet management, navigation aide for hikers and travellers, visual and voice navigation for drivers.

This constellation was earlier named 'NavIC' (Navigation with Indian Constellation) by Prime Minister Narendra Modi.

The NavIC system has many uses including for fishermen venturing into sea, guiding merchant ships to navigate, tracking of railway movement and alerting road users near unmanned level crossings. 

Gloom hits ISRO

 The occasion was bereft of any jubilation. No handshakes or greetings -- a stoic silence as India's navigation satellite launch mission ended in a failure.

This was the scene at the Mission Control Centre in the Satish Dhawan Space Centre of ISRO here today as the mission to launch the 'IRNSS-1H' satellite ended unsuccessfully.

What had begun with cheerful claps by scientists for each successful stage of the PSLV-C39 mission turned into anxiety after the prolonged stationary blinking on the main monitors indicated a glitch.

There was even a palpable pause in the commentary of the live telecast seeing the sudden sombre mood at the Mission Control Centre after the polar rocket reached the crucial and final fourth stage.

It was by then apparent that ISRO's tryst with successful launches, using its trusted workhorse PSLV, had taken a hit.

After the heat shield of the PSLV-C39 failed to get separated, ISRO Chairman A S Kiran Kumar termed the mission as unsuccessful amid the pall of gloom descending over the centre.

Explaining the process, Kumar said: "A heat shield is used to protect the satellite. It has to separate and fall out (in the fourth stage). And once that happens, the satellite is released to get into the orbit" and that this did not happen.

The heat shield had to protect the satellite during its atmospheric phase of the rocket flight, another ISRO official told PTI.

The customary post-launch press conference, which is generally attended by several ISRO scientists, turned out to be a brief affair with Kumar and Satish Dhawan Space Centre Director P Kunhi Krishnan wrapping it up in about four minutes.

This was the first failure of an Indian space mission involving ISRO's workaholic Polar Satellite Launch Vehicle after 39 successful launches in a row.