PSLV-C61/EOS-09 mission couldn’t be achieved: ISRO

PSLV-C61 rocket carrying Earth Commentary Satellite tv for pc (EOS-09) lifts off from the primary launch pad, in Sriharikota, Sunday, Could 18, 2025. After a exact liftoff, Chairman V. Narayanan mentioned that the mission couldn’t be achieved as deliberate
| Photograph Credit score: PTI

The Indian House Analysis Organisation mentioned on Sunday (Could 18, 2025) that it couldn’t full its a hundred and first mission, the PSLV-C61/EOS-09, on account of a technical glitch.

Minutes after the Polar Satellite tv for pc Launch Automobile (PSLV-C61), carrying the earth commentary satellite tv for pc EOS-09, lifted off from the Satish Dhawan House Centre in Sriharikota at 5:59 a.m., the house company mentioned that the mission couldn’t be “achieved” on account of a glitch within the third stage of the launch automobile. The PSLV was anticipated to put the satellite tv for pc right into a Solar Synchronous Polar Orbit (SSPO) 17 minutes after lift-off.

“The PSLV is a four-stage automobile and second-stage efficiency was fairly regular. The third stage’s motor began completely however through the functioning of the stage, we’re seeing an commentary and the mission couldn’t be achieved. After evaluation, we will come again,” ISRO Chairman V. Narayanan mentioned.

Mr. Narayanan later advised reporters that through the third stage, there “was a fall in chamber strain within the motor case”, on account of which the “mission couldn’t be achieved”.

The third stage of the PSLV is a stable rocket motor that gives the higher levels excessive thrust after the atmospheric section of the launch.

Former ISRO Chairman S. Somanath in a put up on X acknowledged, “I’m conscious of the formidable challenges we confronted through the growth of the third-stage stable motor — an endeavour marked by a number of failures. It’s certainly uncommon to witness such anomalies resurfacing at this stage. However, I’ve full confidence that the crew will determine the foundation trigger each swiftly and successfully.”

The C61 mission was additionally the 63rd flight of the PSLV and the twenty seventh within the PSLV-XL configuration.

Earlier than Sunday’s (Could 18, 2025) launch, the PSLV had suffered solely two failures since its first mission in 1993. The very first mission, PSLV-D1, couldn’t place the IRS-1E satellite tv for pc in orbit and in 2017, the forty first flight of the launch automobile resulted in failure. Since then, all PSLV launches had been profitable with the earlier one being the SpaDeX mission in December 2024.

The setback of the PSLV-C61/EOS-09 mission follows the ISRO’s failure to carry out the meant orbit-raising operations for the NVS-02 satellite tv for pc on account of a valve malfunction. The NVS-02 was launched on January 29 in what was the landmark a centesimal launch from Sriharikota.

Just like the EOS-04 satellite tv for pc, EOS-09 was designed with the mission goal of making certain distant sensing information for the consumer neighborhood engaged in operational functions and to enhance the frequency of commentary.

The house company mentioned that the spacecraft was configured utilizing ISRO’s RISAT-1 heritage bus, with many of the practical necessities of the Artificial Aperture Radar (SAR) payload and the bus platform methods derived from the sooner ISRO missions.

The satellite tv for pc weighing 1,696.24 kg carries a SAR payload able to offering photos for numerous earth commentary functions beneath all-weather situations. The EOS-09 was designed to offer steady and dependable distant sensing information for operational functions throughout numerous sectors and had a mission life of 5 years, the ISRO mentioned.