jeudi 31 août 2017

ISRO's Eighth Navigation Satellite IRNSS-1H Unsuccessful Mission

ISRO - Indian Space Research Organisation logo.

August 31, 2017

 ISRO's Eighth Navigation Satellite IRNSS-1H Lifts-off (Illustration by ISRO)

Mission Director has authorised Vehicle Director for launch. Automatic Launch Sequence (ALS) program initiation authorised by Vechicle Director and ALS started for launch of PSLV-C39/IRNSS-1H Satellite mission at 18:47 hr IST.

The forty first flight of India’s Polar Satellite Launch Vehicle (PSLV-C39), conducted today (August 31, 2017) evening from Satish Dhawan Space Centre SHAR, Sriharikota, was unsuccessful.  PSLV-C39 had a normal lift-off at 1900 hrs IST (7:00 pm) and all the flight events took place exactly as planned, except heat shield separation.

ISRO's Eighth Navigation Satellite IRNSS-1H Successfully Lifts-off aboard PSLV-C39

This resulted in satellite separation occurring within the heat shield.  The satellite is inside the heat shield resulting in the unsuccessful mission. Detailed analysis is under progress to identify the cause of the anomaly in the heat shield separation event.

IRNSS-1H Satellite

The Polar Satellite Launch Vehicle, in its forty-first flight (PSLV-C39), will launch IRNSS-1H, the eighth satellite of the Indian Regional Navigation Satellite System (IRNSS) into a Sub-Geosynchronous Transfer Orbit (Sub-GTO). The launch will take place from the Second Launch Pad (SLP) of Satish Dhawan Space Centre (SDSC) SHAR, Sriharikota. As in the previous six launches of IRNSS satellites, PSLV-C39 will use ‘XL’ version of PSLV equipped with six strap-ons, each carrying 12 tons of propellant.

For more information about the mission and Indian Space Research Organisation (ISRO), visit:

Images, Text, Credits: ISRO/HMTV/ Aerospace.


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