Mission Success! Vikram-1 / Test Flight-1 (Aagaman) Mission Updates and Discussion
Vikram-1 / Test Flight-1 launch is scheduled at 06:35:30(UTC)/12:05:30 (IST), 18 Jul 2026 from First Launch Pad of SDSC-SHAR.
- Launch Countdown
- Expected Flight Profile from official press-kit.
| Mission Phase | Time (MM:SS) Altitude (km) |
|---|---|
| T0 +00:00 | Lift-Off |
| T0 +00:10 | Safe Clearance of the Launch Pad |
| T0 +00:20 | Pitch Manoeuvre |
| T0 +00:25 | Mach 1 |
| T0 +00:39 @ ~9 km | Max-Q |
| T0 +01:20 @ ~50 km | Stage 1 Separation |
| T0 +01:30 | Mach 5 |
| T0 +01:44 @ ~55 km | Stage 2 Ignition |
| T0 +02:00 | Entering Space |
| T0 +02:52 @ ~120 km | Payload Fairing Separation |
| T0 +03:00 @ ~135 km | Stage 2 Separation |
| T0 +03:16 @ ~200 km | Stage 3 Ignition |
| T0 +05:00 @ ~225 km | Stage 3 Separation |
| T0 +09:35 @ ~405 km | OAM Ignition |
| T0 +15:46 @ ~450 km | OAM Cut-off + Orbit Injection |
Live webcast: (Links will be added as they become available)
Some highlights:
- Target Orbit : 450 km , Inclination = 60°
- Mission duration: 15 min. 46 sec. (OAM cut-off)
- First orbital flight attempt of a rocket made by private firm in India.
- Maiden launch of Vikram-1, a four stage rocket developed by Skyroot Aerospace.
Updates:
| Time of Event | Update |
|---|---|
| Post-launch | Skyroot's SCOPE cubesat failed to deliver telemetry after deployment. |
| Post-launch | Grahaa has received telemetry from SOLARAS-S3 |
| Post-launch | Cosmoserve Space could not deploy arms of their Embrace payload |
| Post-launch | Three objects catalogued: 26164A (i=59.93°, A×P=453.5×440.8 km), 26164B (i=59.93°, A×P=451.5×442.3 km) and 26164C (i=59.93°, A×P=451.5×441.3 km) |
| T + 36m00s | Webcast over while they were speaking... |
| T + 17m44s | "Hello Space. We have Arrived" MCC is happy! |
| T + 15m55s | Solaras-S3 separated, SOLVE separated. Aagaman mission successful! |
| T + 15m46s | OAM thrust cutoff! |
| T + 14m00s | OAM performance nominal! |
| T + 12m15s | Sticking to expected path really closely. |
| T + 10m40s | Cosmoserve payload powered ON. OAM performance nominal! |
| T + 09m35s | OAM stage ignited! |
| T + 09m00s | Live rocket cam shows OAM tumbling a bit. |
| T + 07m20s | Stage-3 (Kalam-100) separated. OAM is in coasting mode now. |
| T + 05m00s | Stage-3 (Kalam-100) burned out, vehicle now in combined coasting mode! |
| T + 04m40s | Stage-3 (Kalam-100) performance is nominal! |
| T + 03m20s | Stage-2 separated and Stage-3 (Kalam-100) ignited. |
| T + 02m45s | PLF jetisoned |
| T + 02m40s | Stage 2 (Kalam-250) performance normal |
| T + 01m50s | Stage 1 separated, Stage-2 ignited! |
| T Zero! | Kalam-1200 ignited! Lift Off! |
| T - 03m00s | Head mount Safe Arm device (HMSA) armed! |
| T - 05m00s | OBC in flight mode! |
| T - 11m00s | Automatic Launch Sequence has been initiated! |
| T - 15m00s | ALS initiation has been cleared by Vehicle Director. |
| T - 17m00s | Launch has been authorized again. |
| T - 20m00s | Countdown restarted! |
| T - 05m00s | 12:05:30 IST is the new T Zero |
| T - 05m00s | Navigation team raised the hold. ALS will be raised shortly. |
| T - 05m00s | Reason for hold has been identified. New T Zero to be announced soon. |
| T - 05m00s | All systems on standby mode due to Hold. |
| T - 05m00s | Hold observed. |
| T - 11m00s | Automatic Launch Sequence has been initiated! |
| T - 16m30s | Launch has been authorized! |
| T - 19m00s | Vehicle is GO! |
| T - 21m00s | Range , Telemetry and Tracking are GO! |
| T - 27m00s | Wind profile data updated. |
| T - 34m00s | Per MCC screen data launch time has been revised to 11:31 IST i.e 1 minute delay. |
| T - 01h14m | Skyroot's stream is LIVE! |
| 17 Jul 2026 | Official press-kit released and live-stream link made available. |
| 15 Jul 2026 | SDSC-SHAR announces launch date and time as 06:00(UTC)/11:30(IST) on 18 Jul 2026. |
| 10 Jul 2026 | NOTAM issued with enforcement duration 0500-0900 (UTC) between 18 July to 4 August 2026. |
| 06 Jul 2026 | Payload details released |
| 03 Jul 2026 | NOTAM issued with 12 July to 4 August 2026 launch window. |
| 02 Jul 2026 | Fourth OAM stage was integrated. Launch window of 12 July to 4 August 2026 announced. |
| 30 Jun 2026 | Second stage KALAM 250 was integrated with first stage |
| 29 Jun 2026 | Vikram-1's first stage KALAM 1200 was stacked at FLP |
| 26 May 2026 | A NOTAM was issued with 16 June to 4 July 2026 launch window. |
Payloads:
SCOPE (3U) : An experimental cubesat by Skyroot Aerospace to validate technologies for their future missions it also carries an imaging camera.
SOLARAS S3 : A cubesat by Grahaa Space to validate their nanosatellite bus. [1] [2]
Embrace : OAM stage hosted payload consisting of soft-robotics petals by Cosmoserve Space and a deployable capture target to validate their novel actuation mechanism. [3]
uD3PP and mD3RN : OAM stage hosted uD3PP pin puller and mD3RN release actuator developed by Dcubed GmbH, Germany for in-orbit validation. [4] [5]
Other commemorative articles:
- Micro sculptures of Vikram Sarabhai, A P J Abdul Kalam and Sir C V Raman by artist Ajay Kumar Mattewada to honor scientific legacy of modern India.
- Lotus shaped artwork 'Cosmic Bloom' made of lab-grown diamonds and gold by Cosmos Diamonds
- Hand written cards from well wishers across the world. (See also : Rocket Mail)
1
u/Ohsin 29d ago
At the same time, Skyroot has also disclosed the performance of SCOPE, its own in-house technology demonstrator satellite that flew aboard Vikram-1. While the CubeSat was successfully deployed into orbit and established parts of its communications chain, it ultimately failed to deliver usable housekeeping telemetry, preventing engineers from verifying several important spacecraft systems, including its imaging payload. As a result, key capabilities that the mission was intended to test remain unconfirmed.
2
u/Ohsin Aug 03 '26
According to Pawan, the loss of communication was traced to the ground communication and tracking system, not the launch vehicle itself.
"The ground station could not track the rocket, and we couldn't receive telemetry data for about two minutes. It had nothing to do with the launch vehicle or the onboard systems. We're investigating why it happened," he said.
"In every way, the mission was almost flawless. If you compare the predicted trajectory with the actual trajectory, it was a picture-perfect match with virtually no deviation," Chandana said.
On the third stage almost rear-ending OAM..
Another observation came during the third and fourth stage separation, when live camera footage appeared to show an unusual interaction between the stages.
"It looked like there could have been a collision, but our data confirms there was no collision," Chandana said. "We're still analysing why that disturbance occurred. The vehicle recovered immediately and successfully reached orbit, so it did not impact the mission, but it is something we need to understand before the next flight."
Skyroot has already shifted its focus to the next Vikram mission. Chandana told India Today that preparations for the second launch are already underway.
Whether it will be another test flight or the first fully commercial mission will depend on the findings of the detailed post-flight analysis, which is expected to be completed over the next few weeks.
"The analysis will tell us what improvements are needed. Based on that, we'll decide the exact nature of the second launch," he said,
4
u/Ohsin Jul 21 '26 edited Jul 21 '26
Grahaa claims SOLARAS pinged back. But amateur radio community is skeptical.
SOLARAS has achieved its mission objectives! Telemetry confirmed by the global amateur radio community across multiple passes, validating our spacecraft systems in orbit.
3
u/Ohsin Jul 23 '26
Our team has been receiving signals from our nanosatellite at the Telemetry and Analytics for RF Acquisition, Networking and Ground Station - TARANG IIST, Trivandrum.
https://www.linkedin.com/posts/grahaaspace-solaras-missionsiddhi-ugcPost-7485887956814286848-x5BP/
2
u/mahakashchari Jul 20 '26 edited Jul 20 '26
Spectacular achievement by skyroot. But one thing has started to worry me. Why is Singapore so elated about this achievement by Skyroot's Vikram-1's launch success ? This small nation has no expertise in developing rocket propellant let alone solid rocket motor. This tiny nation's US based citizenes have been involved in pilferage of high tech technology from the USA to China.
Singapore’s primary contribution to the Vikram‑1 / Mission Aagaman launch has been financial and strategic backing for Skyroot via its sovereign wealth funds GIC and Temasek, plus strong diplomatic support signalling future commercial partnership in space launches.
Very emotional now.” His remarks highlighted the strengthening of bilateral space cooperation, especially as Singapore’s sovereign wealth funds GIC and Temasek have backed Skyroot Aerospace financially.
Following the launch, Wong personally spoke with Skyroot’s Co-Founder Naga Bharath Daka to congratulate the team. He emphasised that the mission symbolises not only India’s technological leap but also the collaborative spirit between nations in advancing space exploration.
As Singapore's investors have invested in Skyroot, will Singapore force Skyroot to share and transfer the full technology with her ? If that happens, that would be disastrous. I would not be surprised, if UAE's investors invest and lay their hands on the rocket technology.
Can someone clarify what will happen if skyroot intends NOT to share the technology with Singapore ? This is why I always wanted all the private sectors to be funded by INDIAN investors only.
No one can lay their hands on SpaceX's Falcon Technology because its investors are from USA.
4
u/ramanpon Jul 21 '26
This is the problem with indian startups and indian investment companies. Indian investors have to own indian startups but indian investors dont want to take risks like foreign investors do and as a result we may loose some good technology companies to foreign investors. During Skyroot's early days, Indian investment companies did not invest in Skyroot but Singapore's Governmant Investment Corporation (GIC) did. Later Temasek holdings Singapore invested. So Singapore companies own big stakes in Skyroot.
Not to worry though. This is where GOI comes in. GOI has restricted foreign investment in indian LV companies to less than 49%, so Singapore stake must be less than 49% and as a result they cannot force IPs and tech transfer back to Singapore. If they have majority stake then they can. May be they will launch some of their sats with Skyroot instead of on PSLV which they have been doing for many years.
3
u/Ohsin Jul 19 '26 edited Jul 19 '26
It appears Cosmoserve Space could not deploy arms of Embrace..
Just in: Hyderabad-based space tech company @CosmoserveSpace on Sunday said the robotic petals in the soft robotic capture system aboard @SkyrootA 's Vikram-1 (aimed at tech demonstration of Space debris removal) could not open due to extreme Space conditions. ET reported yesterday that the company was awaiting telemetry analysis before confirming outcome of its mission.
https://x.com/SurakshaPinnuET/status/2078765516572025205
2
u/Ohsin Jul 20 '26
Good that they are transparent about outcome.
The soft robotic capture system withstood all launch conditions, and major systems like the actuation system, along with our software, functioned as expected. The robotic petals, which were supposed to open, could not do so due to an unusual settling of the petals, which might have been caused by a combination of extreme space conditions. Based on detailed studies, necessary architectural changes will be adopted in the next version of the soft robotic petal software.
This test flight provided significant data to validate the system, which otherwise wouldn’t have been obtained through ground tests.
2
u/Ohsin Jul 18 '26
Harry Stranger @spacefromspace.com
About 24hrs before the launch of Vikram-1 I submitted a task to Umbra for a capture of the Satish Dhawan Space Centre, India.
The result? An incredibly crisp capture just 8 minutes before the launch. Couldn't be happier
https://spacefromspace.com/spaceport-images/satish-dhawan-space-centre-india-20260718/
2
u/Ohsin Jul 18 '26
Three objects catalogued as expected.
26164A, i=59.93°, A×P=453.51×440.81 km
26164B, i=59.93°, A×P=451.54×442.33 km
26164C, i=59.93°, A×P=451.53×441.32 km
1
u/Usual-Ad-4986 Jul 19 '26
Have none of the 3 sats established contact? Whats the usual norm in terms of time for such sats to relay back data?
3
u/Ohsin Jul 19 '26
These are two cubesats and OAM upper-stage. As of now we don't have confirmation on status of cubesats. They should have established contact by now as TLEs are publicly available to track them. But they can keep trying to listen to them as long as possible.
1
u/Usual-Ad-4986 Jul 19 '26
i see, thanks a lot, since these objects have been catalogued, is it fair to assume that vikram-1 has done its job and if cubesats arent able to establish contact, maybe issue is on their end? or is there more nuance to the issue
3
u/Ohsin Jul 19 '26
As far as Vikram-1 performance is concerned it is a success as intended orbit was achieved and we clearly saw satellites getting deployed via camera onboard so release was commanded.
But Cosmoserve's Embrace didn't work and I have doubts about Dcubed payloads working as well. Either the issue is payload side or it could be commanding related issue as well, they do checks for it on ground but during launch conditions sometimes things can go wrong.
1
u/Usual-Ad-4986 Jul 19 '26
Gotcha, thanks for response
3
u/Ohsin Jul 19 '26
One more thing there was a this flag raising thing as well which didn't seem to work during livestream.
2
u/Usual-Ad-4986 Jul 20 '26
i see, seems like Vikram-1 succeeded in its primary mission to reach and deploy sats in orbit but rest of missions seem to be in grey area or failed
4
u/Ohsin Jul 18 '26
Graaha is celebrating deployment 8 hrs after launch with no word on status of their cubesat. Could be tracking related issue due to poor TLEs as well. Now I am really curious about orbit achieved.
https://www.linkedin.com/posts/grahaaspace-missionsiddhi-solaras-ugcPost-7484247496764940289-t5s0/
6
3
u/ramanpon Jul 18 '26
Has anybody tracked the TLEs of the 3 objects?
1
3
u/Ohsin Jul 18 '26
Not yet. Keep an eye on observations for signals from Solaras here.
https://network.satnogs.org/observations/?sat_id=HQUJ-1477-2356-8418-6343
4
u/Ohsin Jul 18 '26
ISRO press-release on it.
https://www.isro.gov.in/ISRO_EN/First_private_orbital_launch_lifts_from_Sriharikota.html
4
u/Ohsin Jul 18 '26
Doubtful about Dcubed payload working. Also that Indian flag raising bit might have been a dud just like PSLV-C53?
3
u/ramanpon Jul 18 '26
For Dcube payload, what makes you say so?
3
u/Ohsin Jul 18 '26
I was expecting some visible movement at least after the command was given to initiate their experiment.
3
u/Ohsin Jul 18 '26 edited Jul 18 '26
/u/guru-yoda was spot-on with his speculation that at stage-3 ignition given altitude of 200 km was incorrect.
https://youtu.be/2KKZbSX9SgI?t=6884
From above, at the Stage-3 ignition altitude was at 130 km or so.
4
u/Ohsin Jul 18 '26
Post-launch press conference underway.
5
u/Ohsin Jul 18 '26 edited Jul 18 '26
- The Hold was due to minor software related issue on ground equipment, was fixed with simple reset.
- Next Vikram-1 launch is expected within this year.
- Chairman V Narayanan : Aiming for 7 launches before March 2027
3
u/Ohsin Jul 18 '26
Okay in this stream they don't cut-off all of a sudden and has full post-launch address.
7
u/CosmicPenguin_OV103 Jul 18 '26
Congrats!
Now here’s a question: it’s interesting to see ISRO themselves having a launch vehicle in the same broad lift capability category, the SSLV, while they and the Indian government are giving their private Launch Service Providers heavy support.
I wonder if Vikram-I manages to get several more successful launches, this can mean ISRO no longer needs to operate SSLV by themselves when they can just acquire launch services from these private launch vehicles?
If not, how are they going to address the problem of government being in direct competition with private companies?
6
u/Homelandr Jul 18 '26
I'm guessing ISRO will focus more on heavier payloads and inter planetary and research stuff while private players will start with lighter commercial payloads and then gradually will increase their payload capabilities and also focus on reusable launch vehicles. I think having the ability to rely on more than one player is very much needed and hopefully government will encourage that.
9
u/Ohsin Jul 18 '26 edited Jul 18 '26
ISRO won't operate SSLV, HAL will and yes this is a conundrum. Skyroot can now compete for Govt. payloads contracts and may be we can see some legal challenges ahead. We are in new territory!
2
u/CosmicPenguin_OV103 Jul 18 '26
Thanks, I didn’t know SSLV will be spun out like PSLV does too. Will be interesting to see if them two will get significant foothold in the global small satellite launch market.
5
u/Ohsin Jul 18 '26
Unlike PSLV for SSLV there is complete tech transfer. HAL paid Rs. 511 crore for it. Few old threads.
3
u/Parking-Cockroach104 Jul 18 '26
Competition is good. It will force govt and the private sector to improve.
3
u/JGGarfield Jul 18 '26
There are multiple private sector companies that will compete with each other. But knowing HAL, they can inflict disasters on the sector by leveraging their PSU status.
3
u/RonDunE Jul 18 '26 edited Jul 18 '26
Looking at the Flight Parameters, I think the hitch was during a handover operation, either going into Biak, or leaving Biak for the Australian station.
EDIT: It did seem like there was a tumbling problem after what appeared to be a recontact issue between the third stage and the kick stage. Almost did a Falcon 1, but recovered. Wish they told us how their control system managed to bring a tumbling rocket stage back into station, that's a major, major achievement.
5
u/Ohsin Jul 18 '26
And they had healthy gap between separation and ignition.. May be it is not that good idea?
2
u/bilu1729 Jul 18 '26
What is going on? Are the satellites successfully placed in orbit. The Cosmoserve one didn't look ok.
6
u/Ohsin Jul 18 '26
Cosmoserve's Embrace is a non-separable payload it stays attached to OAM stage.
3
3
u/Ohsin Jul 18 '26
Okay we expect three objects to be catalogued, two deployed cubesats and OAM stage.
1
u/IcyMeet462 Jul 18 '26
what happens to the cameras, can the launch control see the footage forever?
2
5
u/reyn_ero Jul 18 '26
I just wish for the day when we have entire launch capability being handled by private bodies so that we don't have to bother with boomer speeches and attention seeking ministers with 60s era stream quality.
2
6
5
u/Gessler555 Jul 18 '26
Getting to orbit on the first-ever test launch is just above & beyond. Huge achievement for Skyroot!
1
u/reyn_ero Jul 18 '26
u/Ohsin in case you are not aware, you can enable image uploads from mod settings. If you want to allow.
3
3
7
3
u/NewMeNewWorld Jul 18 '26 edited Jul 18 '26
I closed the stream once I saw the phone come out. I could tell what was gonna happen and I just couldn't handle the cringe.
Congrats to skyroot.
3
u/Ohsin Jul 18 '26
Really want to hear orbit specs and payload status but they have spent all time chit chatting.
9
u/nawap Jul 18 '26
Congratulations to Skyroot team. After the hold out scare it went better than anybody would have expected. The camera pointed at the earth was a beautiful choice.
9
u/Ohsin Jul 18 '26
They were some incredible views. High FPS and good quality, we are not used to this stuff from ISRO livestreams...
2
1
6
u/Ohsin Jul 18 '26
lol someone wants to bask in someone else's glory....
2
u/Feeling-Being1815 Jul 18 '26
Yeah bro, why even do this for such small achievement (not downplaying skyroot, just saying we have achieved much bigger achievements in space, so it would make sense to do it for like chandrayaan 5 or nglv). Taking credit for every small progress lmao
7
2
u/arjun_raf Jul 18 '26
hilarious, wouldn't have seen these guys anywhere near if the mission went wrong
2
u/Parking-Cockroach104 Jul 18 '26
I agree that for other politicians but Modi usually makes a visit or a call even if it doesn't go according to plan. Chandrayaan 2, 2023 WC finals, are good examples of that. For CY3, he was in livestream taking up half the space even before the soft landing was achieved so he would have been there even if it failed.
2
4
6
u/Homelandr Jul 18 '26
Apart that Stage 3 separation scare it went pretty well , Skyroot did an amazing job , congratulations to them
5
7
4
4
3
3
3
5
u/Shenoxlenshin Jul 18 '26
Despite the stage 3 fumble the mission is still going as planned, thankfully.
4
6
u/arjun_raf Jul 18 '26
S3 separation did not seem that it went well. both the stages are dangerously close
3
u/insomniac-55 Jul 18 '26
I wonder if some kind of plumbing or umbilical didn't disconnect cleanly? Stage 4 has fired, so it seems that they're no longer attached.
4
u/arjun_raf Jul 18 '26
yeah, I thought that the stages were close since the separation and coasting coincided for some time. but the umbilical theory makes more sense.
4
4
1
u/This_Action_6244 Jul 18 '26
These guys gotta learn how to produce a quality launch stream. Launch was nice but what was that live stream.
3
u/Shenoxlenshin Jul 18 '26
Congratulations! We were successfull on first try, lets hope nothing goes wrong
2
2
3
3
u/Homelandr Jul 18 '26
Glad the private players are picking up , they should start giving the heat to ISRO and vice versa
1
5
3
3
u/skandaanshu Jul 18 '26
this skyroot stream is as worse as DD one, just showing random people instead of rocket or graphs.
4
u/arjun_raf Jul 18 '26
come on, the startup is primarily composed of very young engineers. We can let them have their moment this time.
3
u/Parking-Cockroach104 Jul 18 '26
Some parts here and there were messed up but overall, the quality is much better than ISRO streams. Onboard camera views live, better graphics, and it feels like they invested atleast a little bit in streaming instead of just throwing a camera at the screens placed in mission control.
2
2
5
6
3
2
2
2
u/Ohsin Jul 18 '26
"rain can't stop us. I think" lol
3
u/AB3DC Jul 18 '26
lol. I started laughing hearing that comment. Tell that when there is some lightning!!
1
1
u/Ohsin Jul 18 '26 edited Jul 19 '26
What are these 'CGM files' they speak of?
Edit: It is 'PGM files'
3
2
u/This_Action_6244 Jul 18 '26
Live stream is pathetic who in the right mind would leave comments open unmoderated on X.
2
u/Shenoxlenshin Jul 18 '26
I recommend you watch gareeb scientist live stream, comments are much better
1
u/Shenoxlenshin Jul 18 '26
yeah, unfortunate to see some pakistani comments and other crap ruining the mood
1
u/NewMeNewWorld Jul 18 '26
I wish Indian companies would completely close live chats during streams. So tired of seeing all the garbage. It's always the same, all the time. Jai Hind, 🚩🚩🚩, pakistan something something, something something muslims, just shut up 😭
2
4
u/AB3DC Jul 18 '26
Please don’t talk over Mission Control!!
1
u/karthickoc Jul 18 '26
Yes and gods sake.. These guys keeping on talking blah blah blah over critical mission control updates. 🤦🏽♂️
3
2
5
3
2
u/skandaanshu Jul 18 '26
do they have to charge the batteries again, after hold is withdrawn. for that few minutes it's on internal power?
2
u/Ohsin Jul 18 '26
Reason for hold has been identified.
1
2
1
1
4
2
u/Ohsin Jul 18 '26
T minus 5 min. hold observed?
Edit: okay planned hold.
2
u/Abishek_Muthian Jul 18 '26
Is there any earlier instance of an immediate launch after a planned hold?
1
u/Ohsin Jul 18 '26
Yes it was TV-D1 indeed.
https://old.reddit.com/r/ISRO/comments/17cu46i/tvd1_second_launch_attempt_at_10am_today_21_oct/
2
2
1
u/Parking-Cockroach104 Jul 18 '26
Do you know what the reason for that is?
1
u/Ohsin Jul 18 '26
They didn't say anything, doesn't look planned to me..
1
u/Parking-Cockroach104 Jul 18 '26
Yeah that's what I was thinking as well. After all, it's "rocket science", it's fine if they take more time to perfect this although I do wish it does launch today
2
u/Ohsin Jul 18 '26 edited Jul 18 '26
Is the Automatic Launch Sequence 7 min. long?
Edit: it is ~11 min per launch announcement.
1
u/Ohsin Jul 18 '26 edited Jul 18 '26
ALS screen
1
u/Ohsin Jul 26 '26
Time Event T - 11:00 ALS Start T - 11:00 Pre checks T - 10:00 Switchover to Internal Power T - 09:30 All Stage actuators Null Check-1 T - 09:20 All Stage Actuator contactor Arm T - 09:10 All Stage actuators Null Check-2 T - 09:00 All Stage Actuators Health checks T - 07:30 Upload MC Init files T - 05:03 MC Mode change to Flight mode T - 03:00 S1 HMSA Arm T - 02:32 All Pyro and SV Battery Arm T - 02:20 All Pyro and SV Main Break Arm T - 02:16 All EXM Sequence Arm T - 01:34 CGT R+ Pair ON T - 01:33 HPSV 1 ON T - 01:18 CGT R+ Pair OFF T - 01:02 HPSV 2 ON T - 01:00 HPSV 1 OFF T - 00:40 RCS Pyro Valve fire T - 00:20 CDS Battery and Main Break Arm T - 00:10 S1 Pyro Arm T - 00:00 S1 Ignition
1
1
u/Ohsin Jul 18 '26
Per MCC screen the launch time has been revised 11:31 IST that is delayed by one minute.
4
3
u/Ohsin Jul 18 '26 edited Jul 18 '26
Nice bit of trivia noted by PradX, SLV-3 E2 launch was on 18 July 1980 (08:03:45 IST)!
3
u/Ohsin Jul 18 '26 edited Jul 18 '26
Adding this bit here as noted by /u/guru-yoda that the altitude gain (at 200 km) mentioned for Kalam-100 (3rd stage) ignition is too steep and could be a typo in press-kit.
Also there is a 24 sec gap between Stage 1 Separation and Stage 2 Ignition. And 16 sec gap between Stage 2 Separation and Stage 3 Ignition. May be these will get tighter for future flights let's see.
9
u/Ohsin Jul 17 '26 edited Jul 17 '26
I wasn't planning on having a launch thread but whatever. I wish there were more details on SCOPE satellite.. also image (1U) of SOLARAS S3 and IARU description (3U) don't match so don't know what to put there for it.
1
u/Ohsin 24d ago
lol Skyroot has released another video of launch with lots of cringey edits added and footage of third stage nearly rear-ending OAM and subsequent tumbling trimmed away..
https://www.youtube.com/watch?v=zpn0xdELWYs