Author Topic: GSLV MkII F12 - NVS-01 (aka IRNSS-1J) - SLP - 29 May 2023 (05:12 UTC)  (Read 26602 times)

Offline beidou

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This is going to be the first IRNSS launch in 2018.
« Last Edit: 05/29/2023 10:09 am by Galactic Penguin SST »

Offline zubenelgenubi

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Re: IRNSS-1J - PSLV - 2019?
« Reply #1 on: 07/23/2019 02:32 am »
Belated cross-post re: ISRO 2019 launches:
https://timesofindia.indiatimes.com/india/isro-aims-to-launch-22-missions-in-2019-50-in-3-years/articleshow/65375131.cms?from=mdr
Quote
The bigger launches include...IRNSS-1J, as part of India's navigation constellation, which will carry an indigenous atomic clock.
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Offline zubenelgenubi

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Re: PSLV-XL C52 - IRNSS-1J - 2020
« Reply #2 on: 10/22/2019 11:21 pm »
Do "we" know if IRNSS-1J is intended for GEO or inclined GEO?
« Last Edit: 10/22/2019 11:21 pm by zubenelgenubi »
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - November 2021
« Reply #3 on: 03/12/2021 07:49 pm »
Do "we" know if IRNSS-1J is intended for GEO or inclined GEO?

From the government annual (2020/2021) report (pdf attached here), page 51: NVS-01, also known as IRNSS-1J, will take IRNSS-1G's slot in geostationary orbit.
Five replacement satellites are planned: NVS-01 through 05.

Also note that the launch vehicle has been "upgraded" from PSLV-XL to GSLV MkII.  From page 60:
Quote
Future Missions of GSLV planned to be launched in 2021 are GSLV-F10/EOS-03, GSLV-F12/EOS-05, GSLV-F14/NVS-01. These missions are in various stages of realisation.
« Last Edit: 03/12/2021 08:13 pm by zubenelgenubi »
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - TBD 2022
« Reply #4 on: 08/22/2021 10:16 pm »
Given the third stage failure of GSLV Mk II, I expect that this launch will be delayed through the investigation and mitigation.

Whether or not this launch will be the Return To Flight for GSLV MkII, I don't know.

I'm changing the thread title to TBD 2022.
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Offline vyoma

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - TBD 2022
« Reply #5 on: 02/21/2022 06:39 am »
An interview (in Malayalam language) with Dr S Unnikrishnan, head of the Human Space Flight Center and VSSC: https://www.asianetnews.com/science-technology/vssc-director-s-unnikrishnan-talks-about-gaganyaan-chandrayaan-3-and-sslv-missions-r7k46e

Google translated: https://www-asianetnews-com.translate.goog/science-technology/vssc-director-s-unnikrishnan-talks-about-gaganyaan-chandrayaan-3-and-sslv-missions-r7k46e?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=en-US&_x_tr_pto=wapp

Quote
GSLV Mark 2 will be back

The GSLV Mark 2 will soon be back on the launch pad. The IRNSS satellite will be launched on GSLV as part of a naval project. The problem has been identified six months ago and necessary changes have been made. Nisar is also preparing for the NASA-ISRO joint mission. The Aditya L1 mission to study the Sun will also be completed later this year. GSLV Mark 2 should be used for this mission as well.
« Last Edit: 02/21/2022 06:40 am by vyoma »

Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - 2022
« Reply #6 on: 04/07/2022 02:40 am »
GSLV MkII return to flight?  See c).

https://pib.gov.in/PressReleseDetailm.aspx?PRID=1814043

Quote
Dr Jitendra Singh today gave the details of the upcoming ISRO space missions planned in 2022 in a written reply to a question in the Lok Sabha as follows:
      a) 2 Polar Satellite Launch Vehicle (PSLV) missions including 1 dedicated commercial mission and 1 mission for launching the EOS-06 earth observation satellite
      b) 2 developmental flights of ISRO’s Small Satellite Launch Vehicle (SSLV)
      c) 1 Geosynchronous Satellite Launch Vehicle (GSLV) mission for launching NVS-01 navigation satellite for NavIC
      d) 1 communication satellite mission (GSAT-24) through procured launch for commercial customer
      e) 1 Geosynchronous Satellite Launch Vehicle – Mark III (GSLV Mk-III) mission,    which   is a dedicated commercial mission
« Last Edit: 07/03/2022 02:50 am by zubenelgenubi »
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Offline vyoma

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - 2022
« Reply #7 on: 04/07/2022 04:27 pm »
https://pib.gov.in/PressReleseDetail.aspx?PRID=1814390

Quote
The Minister informed that the Failure Analysis committee has recommended improvements to enhance the robustness of the Cryogenic Upper Stage for future GSLV missions. The GSLV vehicle with the required modifications in the Cryogenic Upper Stage is expected to be ready by the third quarter of 2022. The satellite identified for the next GSLV mission is expected to be ready for launch in the fourth quarter of 2022. Therefore, no delay is envisaged with respect to the related projects due to the failure.

Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 2023
« Reply #8 on: 08/17/2022 06:41 am »
Cross-post; launch apparently delayed into 2023:
Director, SDSC SHAR, press meet [15 Aug 2022]:
[YouTube link]
Missions planned for this year:
GSLV Mk3 M2 - OneWeb
PSLV C54 - Oceansat
SSLV D2
TV-D1 and TV-D2 CES for Gaganyaan
GSLV Mk2 F12
<snip>
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NLT March 2023
« Reply #9 on: 10/23/2022 07:02 pm »
NVS-01 launch before the end of the current Indian fiscal year, NLT March 2023:

Interview begins at 02:52.



Director, SDSC SHAR, press meet [15 Aug 2022]:
[YouTube link]
Missions planned for this year:
GSLV Mk3 M2 - OneWeb
PSLV C54 - Oceansat
SSLV D2
TV-D1 and TV-D2 CES for Gaganyaan
GSLV Mk2 F12
<snip>

Might this satellite launch aboard GSLV MkII F12 instead of F14?
« Last Edit: 10/23/2022 07:03 pm by zubenelgenubi »
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NLT March 2023
« Reply #10 on: 12/02/2022 12:49 am »
Cross-post; NET January 2023, NLT March 2023:
SN, India’s PSLV rocket launches nine satellites in final mission of 2022, November 26:
[Paraphrased]
Like the article title says, the Oceansat-3 launch was the last ISRO orbital launch of 2022.
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Offline Steven Pietrobon

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NLT March 2023
« Reply #11 on: 12/02/2022 05:06 am »
https://www.daijiworld.com/news/newsDisplay?newsID=1023470 [Nov 26]

"Somanath said the space agency will launch a navigation satellite for the country's NavIC constellation.
...
He said ISRO has planned to launch four NavIC satellites and the first one will go up in 2023."
« Last Edit: 02/09/2023 09:13 pm by zubenelgenubi »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NLT March 2023
« Reply #12 on: 02/09/2023 10:19 pm »
Any new news? 👀
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Offline TheVarun

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NLT March 2023
« Reply #13 on: 02/09/2023 11:13 pm »
"Any new news? 👀"

  They seem to have gone quiet on the GSLV Mk2 vehicle. Have the troubles with the CUS-15 stage been dealt with successfully?

   That would be wonderful if a GSLV Mk2 with the first in a  new series of IRNSS went up in March!


Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - 2023
« Reply #14 on: 02/10/2023 03:50 am »
From the post launch speeches after the successful launch of SSLV D2:
Preparing GSLV Mk.III for 36 OneWeb satellites in middle of March. Commencing launch campaign immediately after today's launch for PSLV C55 for end of March on commercial mission. Using new facility. Preparing for landing demonstration of RLV in a few days time.

For Gaganyan have abort and recovery mission today, another abort and recovery mission and trying for uncrewed mission before end of year.

GSLV for NAVIC series satellite prior to NISAR, scheduled for end of this year. More PSLV missions as well.
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 18 March 2023
« Reply #15 on: 02/14/2023 02:50 pm »
Cross-post:
Quote
Intelsat License LLC (“Intelsat”) herein requests 30 days of Special Temporary Authority (“STA”),1 commencing March 18, 2023, to use its Nuevo, California C-band earth station, Call Sign E040125, to provide launch and early orbit phase (“LEOP”) services to the NVS-01 satellite.2 NVS-01 is expected to launch on March 18, 2023. Intelsat expects the LEOP period to last approximately seven days.

Why wasn't this launch specifically mentioned as happening soon at this opportunity a few days ago?
From the post launch speeches after the successful launch of SSLV D2:
GSLV for NAVIC series satellite prior to NISAR, scheduled for end of this year. More PSLV missions as well.

Next launches from SLP:
OneWeb Flight 18 17
IRNSS-1J?
« Last Edit: 02/28/2023 07:01 am by zubenelgenubi »
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Offline TheVarun

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 18 March 2023
« Reply #16 on: 02/14/2023 03:01 pm »
^

 That would be amazing if there is a launch by GSLV Mk2 by the end of March.  Fuzzy or conflicting information on this launch.

Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - April? 2023
« Reply #17 on: 03/26/2023 08:18 am »
From the LVM3 OneWeb cluster launch:
Chairman wrapping up. Coming up are launches of GSLV Mk.III, PSLV in April carrying a commercial payload and GLSV Mk.II.
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Offline GWR64

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - April? 2023
« Reply #18 on: 03/26/2023 10:39 am »
Supplement E040125 E4132 NVS-01 [Intelsat 3/16/2023]  to the STA filing SES-STA-20230213-00166 for launch and early orbit phase of NVS-1.
Launch date changed from March 18th to no earlier than May 24th, 2023

Quote
Re: Requests for Special Temporary Authority
File Nos.: SES-STA-20230213-00166 and SES-STA-20230213-00167
Dear Ms. Dortch:
Intelsat License LLC herein supplements its above referenced requests to update the requested
Special Temporary Authority commencement date and related launch date to May 24, 2023.
NVS-01 is currently expected to be launched no earlier than May 24, 2023.
« Last Edit: 03/26/2023 10:53 am by GWR64 »

Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 24 May 2023
« Reply #19 on: 04/22/2023 01:46 pm »
Cross-post:
[ISRO Director S Somnath]
<snip>
Next launches are GSLV, PSLV and LVM-3. Three major missions in next few months.
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Offline zubenelgenubi

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 24 May 2023
« Reply #20 on: 05/08/2023 06:18 pm »
Will this launch be from the FLP or the SLP?

Is it still on course for launch at the end of May?

Chandrayaan-3 launches from SLP in July.
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Offline russianhalo117

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Re: GSLV MkII F14 - NVS-01 (aka IRNSS-1J) - NET 24 May 2023
« Reply #21 on: 05/08/2023 08:58 pm »
Will this launch be from the FLP or the SLP?

Is it still on course for launch at the end of May?

Chandrayaan-3 launches from SLP in July.
SLP. FLP is for only PSLV and SSLV nowadays except when SLP is out of service for an extended period of time. As for the rest this not something that can be updated until the detailed NOTAM's are published.

Offline russianhalo117

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Will this launch be from the FLP or the SLP?

Is it still on course for launch at the end of May?

Chandrayaan-3 launches from SLP in July.
SLP. FLP is for only PSLV and SSLV nowadays except when SLP is out of service for an extended period of time. As for the rest this not something that can be updated until the detailed NOTAM's are published.

GSLV actually launched from FLP in its early days.
Yes we know that per why i used the word nowadays.  Since you did not clearly read my post fully FLP is only now used for GSLV when SLP is out of service for pad damage or maintenance or when there is a pair of high priority GSLV's that need to launch in quick succession. They moved GSLV to SLP to increase PSLV's launch rate.
« Last Edit: 05/09/2023 08:54 pm by russianhalo117 »

Offline Galactic Penguin SST

A1263/23 (Issued for VOMF PART 1 OF 3) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE
PLACE AS PER FLW DETAILS.THE LAUNCH WILL BE ON ANY ONE
OF THE DAY DRG THIS PERIOD.ACTUAL DATE OF LAUNCH WILL BE
INTIMATED ATLEAST 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM.
LAUNCH PAD COORD: 134312N 0801348E
NO FLT IS PERMITTED OVER THE DNG ZONES.
A)DANGER ZONE -1:IS A CIRCLE OF 10 NAUTICAL MILES AROUND THE
LAUNCHER.
B)DANGER ZONE -2:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1205N08450E
II)1250N08500E
III)1220N08620E
IV)1135N08610E
C)DANGER ZONE -3:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1055N08835E
II)1140N08845E
III)1105N09030E
IV)1025N09020E
RTE AFFECTED IN CHENNAI FIR
W20, Q24, Q23, V4, V9, Q11, A465, P761, N571, N877, P762
CLOSURES/ALTN RTE FOR OVERFLYING
1.W20 NOT AVBL BTN MMV-KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU
2. Q24 NOT AVBL BTN MMV - KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU (UNI DIRECTIONAL)
3. Q23 NOT AVBL BTN RINTO - MMV
ALTN: RINTO-DCT-TTP-DCT-GUANI-DCT-MMV (UNI DIRECTIONAL)
4. V4 NOT AVBL BTN BOPRI - MMV
END PART 1 OF 3. DLY 0345-0745, 22 MAY 03:45 2023 UNTIL 20 JUN 07:45 2023. CREATED:
11 MAY 08:14 2023


Could be as early as May 22 it seems.
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Offline zubenelgenubi

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Launching from SLP.
A1263/23 (Issued for VOMF PART 1 OF 3) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE
PLACE AS PER FLW DETAILS.
<snip>
LAUNCH PAD COORD: 134312N 0801348E


Edit/add:
Flying on GSLV F12, not F14.

Spotted a L40 booster in PSLV C55 launch stream when they were showing PSLV vehicle assembly clips. It's marked F12.
« Last Edit: 05/29/2023 06:28 am by zubenelgenubi »
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Offline Steven Pietrobon

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A1263/23 (Issued for VOMF PART 1 OF 3) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE


Flying on GSLV F12, not F14.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Galactic Penguin SST

NET May 29 now.

A1275/23 (Issued for VOMF PART 1 OF 2) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE
PLACE AS PER FLW DETAILS.THE LAUNCH WILL BE ON ANY ONE
OF THE DAY DRG THIS PERIOD.ACTUAL DATE OF LAUNCH WILL BE
INTIMATED ATLEAST 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM.
LAUNCH PAD COORD: 134312N 0801348E
NO FLT IS PERMITTED OVER THE DNG ZONES.
A)DANGER ZONE -1:IS A CIRCLE OF 10 NAUTICAL MILES AROUND THE
LAUNCHER.
B)DANGER ZONE -2:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1205N08450E
II)1250N08500E
III)1220N08620E
IV)1135N08610E
C)DANGER ZONE -3:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1055N08835E
II)1140N08845E
III)1105N09030E
IV)1025N09020E
RTE AFFECTED IN CHENNAI FIR
W20, Q24, Q23, V4, V9, Q11, A465, P761, N571, N877, P762
CLOSURES/ALTN RTE FOR OVERFLYING
1.W20 NOT AVBL BTN MMV-KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU
2. Q24 NOT AVBL BTN MMV - KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU (UNI DIRECTIONAL)
3. Q23 NOT AVBL BTN RINTO - MMV
ALTN: RINTO-DCT-TTP-DCT-GUANI-DCT-MMV (UNI DIRECTIONAL)
4. V4 NOT AVBL BTN BOPRI - MMV
ALTN: BOPRI-DCT-RINTO-DCT-TTP-DCT-GUANI-DCT-MMV (UNI DIRECTIONAL)
5. V9 NOT AVBL BTN GUNRI - MMV
ALTN: GUNRI-DCT-GURAS-DCT- KOLCA -DCT-MMV (UNI DIRECTIONAL)
6. Q11 NOT AVBL BTN GURAS -MMV
ALTN: KASRO-DCT-GURAS-DCT-KOLCA-DCT-MMV
7. A465 NOT AVBL BTN GURAS-MMV
ALTN: GURAS -DCT-KOLCA-DCT-
END PART 1 OF 2. DLY 0345-0745, 29 MAY 03:45 2023 UNTIL 20 JUN 07:45 2023. CREATED:
12 MAY 12:46 2023
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Offline Galactic Penguin SST

NET May 29 now.

A1275/23 (Issued for VOMF PART 1 OF 2) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE
PLACE AS PER FLW DETAILS.THE LAUNCH WILL BE ON ANY ONE
OF THE DAY DRG THIS PERIOD.ACTUAL DATE OF LAUNCH WILL BE
INTIMATED ATLEAST 24 HR IN ADVANCE THROUGH A SEPARATE NOTAM.
LAUNCH PAD COORD: 134312N 0801348E
NO FLT IS PERMITTED OVER THE DNG ZONES.
A)DANGER ZONE -1:IS A CIRCLE OF 10 NAUTICAL MILES AROUND THE
LAUNCHER.
B)DANGER ZONE -2:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1205N08450E
II)1250N08500E
III)1220N08620E
IV)1135N08610E
C)DANGER ZONE -3:IS AN AREA BOUNDED BY FOLLOWING COORDINATES:
I)1055N08835E
II)1140N08845E
III)1105N09030E
IV)1025N09020E
RTE AFFECTED IN CHENNAI FIR
W20, Q24, Q23, V4, V9, Q11, A465, P761, N571, N877, P762
CLOSURES/ALTN RTE FOR OVERFLYING
1.W20 NOT AVBL BTN MMV-KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU
2. Q24 NOT AVBL BTN MMV - KAMGU
ALTN: MMV-DCT-DOHIA-DCT-RAMDO-DCT-KAMGU (UNI DIRECTIONAL)
3. Q23 NOT AVBL BTN RINTO - MMV
ALTN: RINTO-DCT-TTP-DCT-GUANI-DCT-MMV (UNI DIRECTIONAL)
4. V4 NOT AVBL BTN BOPRI - MMV
ALTN: BOPRI-DCT-RINTO-DCT-TTP-DCT-GUANI-DCT-MMV (UNI DIRECTIONAL)
5. V9 NOT AVBL BTN GUNRI - MMV
ALTN: GUNRI-DCT-GURAS-DCT- KOLCA -DCT-MMV (UNI DIRECTIONAL)
6. Q11 NOT AVBL BTN GURAS -MMV
ALTN: KASRO-DCT-GURAS-DCT-KOLCA-DCT-MMV
7. A465 NOT AVBL BTN GURAS-MMV
ALTN: GURAS -DCT-KOLCA-DCT-
END PART 1 OF 2. DLY 0345-0745, 29 MAY 03:45 2023 UNTIL 20 JUN 07:45 2023. CREATED:
12 MAY 12:46 2023


May 29 date also thrown around here: https://www.hindustantimes.com/india-news/isro-to-launch-navic-satellite-nvs-01-on-gslv-mk-ii-in-may-to-replace-irnss-1g-offer-better-accuracy-and-coverage-101684006373706.html
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Offline zubenelgenubi

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A1275/23 (Issued for VOMF PART 1 OF 2) - GSLV-F12 ROCKET LAUNCH FM SHAR RANGE, SRIHARIKOTA WILL TAKE
PLACE AS PER FLW DETAILS.
<snip>
DLY 0345-0745, 29 MAY 03:45 2023 UNTIL 20 JUN 07:45 2023. CREATED:
12 MAY 12:46 2023


SFN Launch Schedule update, May 15:
May 29 ~04:00 UTC = ~09:30 IST
« Last Edit: 05/15/2023 05:37 pm by zubenelgenubi »
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NextSpaceflight, updated May 16:
May 29 03:45 UTC = 09:15 IST
« Last Edit: 05/17/2023 07:38 pm by zubenelgenubi »
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Offline TheVarun

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Some info and pics are up on ISRO's website.  Mentions use of first Indian made atomic clock
https://www.isro.gov.in/GSLV_F12_Landingpage.html

https://www.isro.gov.in/GSLV_F12_NVS01_gallery.html

May 22, 2023
The launch of the GSLV-F12/NVS-01 mission is scheduled on Monday, May 29, 2023 at 10:42 hours IST from the second launch pad at SDSC-SHAR, Sriharikota. This Geosynchronous Satellite Launch Vehicle (GSLV) mission is designed to deploy the NVS-01 navigation satellite, weighing about 2232 kg, into a Geosynchronous Transfer Orbit. Subsequent orbit raising maneuvers will be used for taking the satellite to the intended orbit.

NVS-01 is the first of the second-generation satellites envisaged for the Navigation with Indian Constellation (NavIC) services. NVS series of satellites will
« Last Edit: 05/22/2023 02:46 pm by TheVarun »

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https://twitter.com/isrospaceflight/status/1661376872934932481

Quote
T-5️⃣ days: GSLV Mk-2 has rolled out to the Second Launch Pad! #GSLVF12

Offline Galactic Penguin SST

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Offline K210

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Mission Brochure is out: https://www.isro.gov.in/media_isro/pdf/Missions/GSLVF12/GSLV_F12_NVS_01_Mission.pdf

Screenshots of brochure + full brochure attached

Offline K210

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Noteworthy points regarding this launch:

- First GSLV launch since failed GSLV-F10 launch in August 2021
- New 4m Diameter ogive payload fairing first flown on F10 mission will be flown for second time
- GS3 will have reduced propellent load of 14.4 tons against the nominal 15 tons
- Induction of active pressurisation system for GS3 propellent tanks to prevent another GSLV-F10 scenario in the future
- Induction of CUSCE-V2 (Not specified in brochure what this is)
- NVS-1 will have liftoff mass of 2232kg

Offline FutureSpaceTourist

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https://twitter.com/isrospaceflight/status/1662471486068920321

Quote
T-2️⃣ days: ISRO has updated the mission gallery with more images of #GSLVF12!
Link to mission gallery: https://www.isro.gov.in/GSLV_F12_NVS01_gallery.html

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- Induction of CUSCE-V2 (Not specified in brochure what this is)

CUSCE Checkout System

The Cryo Upper Stage Control Electronics checkout system is used for the testing and validation of the CUSCE package. The communication between checkout and control electronics package is using MIL 1553 standards. The checkout acts as the bus controller and the CUSCE will be configured as a remote terminal.

Various tests conducted include Protocol Tests, RT Response Tests, Error Injection Test, Load Test, RAM Check, Input Sensor Check, EGC Linearity Check, Drive MRC/AVR Actuator, Frequency Response Test, Step Response Test, Calibration of EGC pot, Calibration of RTD’s etc.

https://captronicsystems.com/space/
« Last Edit: 05/28/2023 03:07 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline FutureSpaceTourist

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https://twitter.com/isro/status/1662638585579724802

Quote
The countdown leading to the launch has commenced.

Tune in for live-streaming of the
🚀 Launch of GSLV-F12/NVS-01
📆 May 29, 2023
🕝 10:15 am local time

to
https://www.isro.gov.in/GSLV_F12_Landingpage.html
youtube.com/watch?v=nGRsTQ…
facebook.com/ISRO

@DDNational @PIB_India

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https://twitter.com/isro/status/1662638585579724802

Quote
The countdown leading to the launch has commenced.

Tune in for live-streaming of the
🚀 Launch of GSLV-F12/NVS-01
📆 May 29, 2023
🕝 10:15 am local time

to
https://www.isro.gov.in/GSLV_F12_Landingpage.html
youtube.com/watch?v=nGRsTQ…
facebook.com/ISRO

@DDNational @PIB_India

What's that object in the first image of the tweet? 🤔
« Last Edit: 05/28/2023 11:05 am by starbase »
bit.ly/SpaceLaunchCalendar ☆ bit.ly/SpaceEventCalendar

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https://twitter.com/isro/status/1662638585579724802

Quote
The countdown leading to the launch has commenced.

Tune in for live-streaming of the
🚀 Launch of GSLV-F12/NVS-01
📆 May 29, 2023
🕝 10:15 am local time

to
https://www.isro.gov.in/GSLV_F12_Landingpage.html
youtube.com/watch?v=nGRsTQ…
facebook.com/ISRO

@DDNational @PIB_India

What's that object in the first image of the tweet? 🤔

It is the pedestal on which the GSLV is stacked
« Last Edit: 05/28/2023 11:22 am by K210 »

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And the red coverings are shielding the holes where the VIKAS engine exhaust is channeled through into the flame trench.

The same goes for the PSLV strap-on solid motors when they ignite at liftoff.
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- Induction of CUSCE-V2 (Not specified in brochure what this is)

CUSCE = Cryo Upper Stage Control Electronics

Looks like upgraded electronics package. I found that this company was involved in developing checkout system for CUSCE package: https://captronicsystems.com/space/
Quote
CUSCE Checkout System

The Cryo Upper Stage Control Electronics checkout system is used for the testing and validation of the CUSCE package. The communication between checkout and control electronics package is using MIL 1553 standards. The checkout acts as the bus controller and the CUSCE will be configured as a remote terminal.

Various tests conducted include Protocol Tests, RT Response Tests, Error Injection Test, Load Test, RAM Check, Input Sensor Check, EGC Linearity Check, Drive MRC/AVR Actuator, Frequency Response Test, Step Response Test, Calibration of EGC pot, Calibration of RTD’s etc.

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.
-----------------------------

Jonathan McDowell
http://planet4589.org

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.

I haven't seen the designation 'IRNSS-1J' being used by ISRO and is not mentioned on the press-kit.

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.

I haven't seen the designation 'IRNSS-1J' being used by ISRO and is not mentioned on the press-kit.

It had the project name "IRNSS-1J" initially but was renamed to NVS-1 a few years back. Launch vehicle i believe was intended to be PSLV originally but was switched to GSLV along with name change. ISRO's annual report from a few years back states that NVS-1 is intended to replace IRNSS-1G which was launched on a PSLV in 2016. I have attached a copy of ISRO's annual report from 2020-2021. Refer to pages 46-47 for more info on NVS-1.

« Last Edit: 05/28/2023 06:17 pm by K210 »

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https://twitter.com/nasaspaceflight/status/1662899455765430274

Quote
ISRO is set to launch India's second generation of indigenous navigation satellites.

A GSLV Mk.II rocket will launch the NVS-01 satellite from the Satish Dhawan Space Centre at 05:12 UTC (10:42 a.m. local time).

Overview by William Graham (@w_d_graham)

https://www.nasaspaceflight.com/2023/05/india-nvs01-gslv/

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ISRO webcast has begun.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Rollout images.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-25 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-20 minutes.
« Last Edit: 05/29/2023 04:52 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Mission Director key authorisation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-15 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Integration video.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-10 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-6 minutes. Vehicle on internal power.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-5 minutes. Big crowd watching the launch.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-4 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-2 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T-1 minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Liftoff!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+1 minute.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Core stage burnout.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Core separation.

T+3 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+4 minutes. Fairing separation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+5 minutes. Second stage separation.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Third stage ignition.

T+6 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+7 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+8 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+9 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+10 minutes. Cryo stage performance normal.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+12 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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I started to be concerned 😟 when I noted the slight deviations on the graphs.
Support your local planetarium! (COVID-panic and forward: Now more than ever.) My current avatar is saying "i wants to go uppies!" Yes, there are God-given rights. Do you wish to gainsay the Declaration of Independence?

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T+14 minutes. 7.22 km/s.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+15 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+16 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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T+17 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline Steven Pietrobon

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T+18 minutes.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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Third stage ignition.
Gratified that the third/cryogenic stage functioned nominally.  Third stage ignition failed on the previous GSLV MkII launch.
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Cutoff.

Separation!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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ISRO Chairman. Happy that the fixes have worked on CUS. Total of five satellites in second generation.
« Last Edit: 05/29/2023 05:50 am by zubenelgenubi »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Mission director. First flight of GSLV-II with 4 m fairing.
« Last Edit: 05/29/2023 05:50 am by zubenelgenubi »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Satellite Director. Believes naughty boy has been full tamed.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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SAC Director. Feels like climbing Everest.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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URSC Director. Long time since ISRO launched its own satellite to GEO. Solar panels have deployed.
« Last Edit: 05/29/2023 05:43 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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LPSC Director. Seven propulsion systems. All performed extremely well.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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IPRC Director.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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Tracking Director.

IISU Director. First magnetically levitated reaction wheels being flown.
« Last Edit: 05/29/2023 05:47 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline zubenelgenubi

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.
I haven't seen the designation 'IRNSS-1J' being used by ISRO and is not mentioned on the press-kit.
It had the project name "IRNSS-1J" initially but was renamed to NVS-1 a few years back. Launch vehicle i believe was intended to be PSLV originally but was switched to GSLV along with name change. ISRO's annual report from a few years back states that NVS-1 is intended to replace IRNSS-1G which was launched on a PSLV in 2016. I have attached a copy of ISRO's annual report from 2020-2021. Refer to pages 46-47 for more info on NVS-1.
I changed the "a.k.a." in the thread title to IRNSS-2A.

What happened to 1J, 1K, and 1L?  Were they never manufactured or completed?

NSF India launches new-generation navigation satellite aboard GSLV, May 28
Quote
Beginning with NVS-01, the second-generation satellites will fly with Indian-developed atomic clocks in place of the units manufactured by Swiss company SpectraTime which were flown on previous spacecraft.

With a mass of 2,232 kilograms, NVS-01 is also over 900 kilograms heavier than the first-generation satellites and incorporates other enhancements to expand the capabilities of the NavIC constellation. These include broadcast of a new L1 signal, in addition to the L5 and S-band signals broadcast by the existing satellites, which will improve interoperability with other satellite navigation systems such as the US Global Positioning System (GPS) network.

The new second-generation spacecraft, including NVS-01, are based on ISRO’s I-2K satellite bus instead of the I-1K platform used on the first-generation spacecraft. Powered by a pair of solar arrays generating up to 2.4 kilowatts, the satellites have a design life of at least 12 years.

The increased mass of the second-generation satellites renders them too heavy for the Polar Satellite Launch Vehicle (PSLV) rockets that were used to deploy the first generation. Instead, they will be carried aboard the more powerful Geosynchronous Satellite Launch Vehicle, or GSLV, using the Mk.II version of this rocket.
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VSSC Director.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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VSSC SHAR Director. Congrats Team India.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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ISRO Chairman wrapping up. Next GSLV launch is Insat 3DS, happening soon. Same rocket with NISAR. Coming months with PSLV, GSLV Mk.III and test vehicle for Gaganyan. Further PSLV and SSLV launches as well.
« Last Edit: 05/29/2023 05:57 am by Steven Pietrobon »
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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End of webcast.

Congratulations to ISRO and India for the successful launch!
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

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twitter.com/nasaspaceflight/status/1663050820647022594

Quote
LAUNCH! ISRO's GSLV Mk.II rocket launches with NVS-01.

Overview:
nasaspaceflight.com/2023/05/india-… - by William Graham (@w_d_graham).

Livestream:
youtube.com/watch?v=nGRsTQ…

https://twitter.com/nasaspaceflight/status/1663051390665539585

Quote
Staging. It's a bit off its trajectory but classed as nominal.

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Congratulations to ISRO for a successful GSLV launch after nearly 2 years!

Also it is worth pointing out the orbit achieved (173km x 40,079km) is higher than the intended orbit of (170km x 36568km) that is mentioned in the brochure. That ~4000km higher apogee will no doubt help prolong the life of the satellite as less delta-v will be required for it to reach its final orbit.

Thank you Steven for your coverage of the live stream. 

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Offline zubenelgenubi

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Thank you, Steven!
Congratulations to the entire launch campaign team! 🎊 👏 🥳
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I started to be concerned 😟 when I noted the slight deviations on the graphs.

  When I saw this, I sank a bit!  Oh no, here we go again with a possible failure of the GSLV Mk2.  Very uplifting to know of the successful mission!  There are some new technologies involved in this launch/mission, hope we hear about them in the days to come.

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Thank you, Steven!
Congratulations to the entire launch campaign team! 🎊 👏 🥳

Due to caregiver duties, I missed the launch in its entirety.  This is why having these Update threads are so important especially those done by Steven and Future and other special NSF members.  You guys make it possible for me to re-live it while re-watching the live broadcast.  It's like the flight never happened until I read this thread from the start of the launch coverage.  Thanks.
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twitter.com/isro/status/1663056148273172481

Quote
GSLV-F12/ NVS-O1 Mission is accomplished.

After a flight of about 19 minutes, the NVS-O1 satellite was injected precisely into a Geosynchronous Transfer Orbit.

Subsequent orbit-raising manoeuvres will take NVS-01 into the intended Geosynchronous orbit.
https://twitter.com/isro/status/1663066760252391424

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Lift-off images📸

Offline Skyrocket

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.

I haven't seen the designation 'IRNSS-1J' being used by ISRO and is not mentioned on the press-kit.

It had the project name "IRNSS-1J" initially but was renamed to NVS-1 a few years back. Launch vehicle i believe was intended to be PSLV originally but was switched to GSLV along with name change. ISRO's annual report from a few years back states that NVS-1 is intended to replace IRNSS-1G which was launched on a PSLV in 2016. I have attached a copy of ISRO's annual report from 2020-2021. Refer to pages 46-47 for more info on NVS-1.



Here is an ISRO PDF document on several payloads, which confirms the designation "IRNSS-1J" for NVS-01.

https://www.isro.gov.in/media_isro/pdf/Publications/Payloads.pdf

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Is this really IRNSS-1J?   I thought 1J to 1L were spares of the I1K-based design, while this is the first I2K-based IRNSS so I would have expected it to be IRNSS-2A or  something like that.

I haven't seen the designation 'IRNSS-1J' being used by ISRO and is not mentioned on the press-kit.

It had the project name "IRNSS-1J" initially but was renamed to NVS-1 a few years back. Launch vehicle i believe was intended to be PSLV originally but was switched to GSLV along with name change. ISRO's annual report from a few years back states that NVS-1 is intended to replace IRNSS-1G which was launched on a PSLV in 2016. I have attached a copy of ISRO's annual report from 2020-2021. Refer to pages 46-47 for more info on NVS-1.



Here is an ISRO PDF document on several payloads, which confirms the designation "IRNSS-1J" for NVS-01.

https://www.isro.gov.in/media_isro/pdf/Publications/Payloads.pdf

Very helpful, thank you!

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  Congrats to ISRO on an excellent launch and mission!  With the somewhat erratic performance of the GSLV Mk2, this was much needed.  ISRO now has 4 operational launch vehicles- the GSLV MK2, PSLV, SSLV and the LMV3.  It would be nice to see a multiple launch by GSLVMk2.  With the larger payload fairing, that should not be too far off. There must be countries eager to launch smaller geosynchronous satellites in the range of 600kg to 1200 kg, just like ISRO/India did in the early years. GSLVMk2 would conceivably be able to carry, say, a 1000kg and a 1200-1300 kg satellite on the same launch. That would be within its total payload capacity.

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From June 2023 monthly report: https://www.isro.gov.in/media_isro/pdf/Monthly_summary/Monthly_Summary_June2023_Eng.pdf

Quote
NVS-01 satellite, launched on 29th May, 2023, achieves intended orbit and in-orbit testing is initiated. All sub-systems are functioning nominally.

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