ISRO Chief V Narayanan confirms PSLV-C61 ‘mission could not be accomplished’

8 months ago

Sriharikota (Andhra Pradesh) May 18, 2025 (ANI): On the launch of PSLV-C61, ISRO Chief V Narayanan says, "...During the functioning of the third stage, we are seeing an observation and the mission could not be accomplished. After analysis, we shall come back..."

Transcript

00:00Up to the second stage, the performance was quite normal.

00:02Functioning of the third stage, we are seeing an observation and the mission could not be accomplished.

00:0810, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0.

00:23Plus 5 seconds.

00:24Liftoff normal.

00:26Auto tracking.

00:27P3 driver tracking.

00:28P3 driver tracking.

00:32P3 driver tracking.

00:33P3 driver tracking.

00:34First stage performance normal.

00:38There is a magnificent lift off.

00:42The morning sky made brighter by the PSLV.

00:45EOS 09 on its journey to orbit.

00:47Airwick trap ons ignited.

00:50The vibration of the rocket launch is indeed to the...

00:54Plus 40 seconds.

00:57Plus 40 seconds.

00:59Garjana karta hua PSLVC 61.

01:02Aakash mein Poonh garjana se sab ko achambit karta hua.

01:11Apne Uddisht kakshaki or ja raha hai.

01:14First stage for shara on is a minute.

01:17Pratham charan ka nishpadan.

01:19Sabhi tantra puritra samanya kaare kata hua.

01:22Shara is a minute.

01:23Shara ground station currently tracking the launch vehicle and will continue to track till PS4 ignition around 500.

01:30Ground lid strap ons separated.

01:34P2 change raha to ACVT2.

01:36Ground lid strap ons ko yaan se prithak kar diya gya hai.

01:40Is ghatna karam mein agla air lid strap ons ko prithak kiya jana hai.

01:49The ground lid strap ons have been separated from the ongoing launch vehicle.

01:53Air lid strap ons separated.

01:54And just now we have a confirmation that the air lid strap ons have also been jettisoned.

02:00Trivendram station joined for the tracking.

02:09Action time for PS1 is 112 seconds for this mission.

02:13First stage separated.

02:14Second stage engine started.

02:26Second stage performance normal.

02:30The second stage has commenced its operation.

02:33152.5 seconds action time for this mission.

02:36The hydrate of unsymmetrical dimethyl hydrosyne.

02:43The hydrate of unsymmetrical dimethyl hydrosyne.

02:45The hydrate of unsymmetrical dimethyl hydrosyne is the fuel and dinitrogen tetroxide is the oxidizer.

02:56Both of which merely need to come into contact to be able to burn.

02:57They are called hypergolic propellants.

02:58The hydrate of unsymmetrical dimethyl hydrosyne is the fuel and dinitrogen tetroxide is the oxidizer.

03:10Both of which merely need to come into contact to be able to burn.

03:13They are called hypergolic propellants.

03:15Vikas engine with a thrust capability of 73.9 tons powers this stage.

03:21Current altitude is 168 km.

03:40Closed loop guidance has been initiated and the payload fairing has been jettisoned.

03:47Vikas engine has been jettisoned.

03:54Vikas engine with three ground stations.

04:00Shahr Asthith ground station, Trivendram and Mauritius Street ground stations.

04:05We are now on the ground.

04:08Vartaman and Shahr and Trivendram are the ground stations.

04:14We are now on the ground.

04:21Second stage performance is normal.

04:30We are now on the ground.

04:42Second stage separated.

04:43Third stage ignited.

04:44Third stage performance is normal.

04:49The third stage of PSLV has been ignited and its performing normal.

04:56122 seconds or 2 minutes approximately is the action time.

05:03PS3 adds significant relative velocity to the launch vehicle.

05:08It is increased from 4 km per second to 6 km per second at the time of its burnout.

05:15This is the 3-3 Charan has been working on PSLV's vehicle.

05:22It is increased from 4 km per second to 6 km per second at the time of its burnout.

05:30This is PSLV, which is 102 seconds, which is about 480 kN.

05:43This is a flex nozzle control, which is called flex nozzle control.

05:55third stage performance normal

ISRO Chief V Narayanan confirms PSLV-C61 ‘mission could not be accomplished’

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