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List of SSLV launches

From Wikipedia, the free encyclopedia
Launches made by India's Small Satellite Launch Vehicle family of rockets

This article lists all the previous and planned launches byISRO usingSmall Satellite Launch Vehicle (SSLV).

SSLV flight D2 during rollout.

Launch statistics

[edit]
2
2022
2023
2024
2025
2026
  •   Failure
  •   Partial failure
  •   Success
  •   Planned
Decade-wise summary of SSLV launches
DecadeSuccessfulPartial successFailureTotal
2020s2013


Launch history

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2022–2029

[edit]
Date/Time
(UTC)
PayloadLaunch siteRegimeStatus
Flight NumberOperatorFunction
Remarks
7 August 2022
03:48
IndiaEOS 02
IndiaAzaadiSAT[1]
143 kg (315 lb)
Satish Dhawan FLPLEO (intended)
TAO (achieved)
Failure
SSLV-D1ISROEarth observation
The first developmental flight of SSLV. The mission target was a circular orbit of altitude 356.2 km with 37.2° inclination. The mission carried two satellite payloads. The 135 kgEOS 02, an Earth observation satellite and the 8 kgAzaadiSATCubeSat.[2][3][4] Due to sensor failure coupled with shortcomings of onboard software, the stage as well as the two satellite payloads were injected into an unstabletransatmospheric Earth orbit measuring 356×76 km and subsequently destroyed upon reentry. According toS. Somanath, an anomaly lasting 2 seconds in one of the accelerometers during second stage separation initiated salvage mode by onboard computer.Guidance, navigation, and control software switched from 'closed loop guidance' where it received real-time feedback from all sensors to an 'open loop guidance' where accelerometer data gets isolated and a predetermined path is followed.[5] This resulted in velocity shortfall from the required 7.3 km/s to 7.2 km/s. Being in salvage mode, Velocity-Trimming Module didn't rectify this shortfall which led to mission failure.
10 February 2023
03:48[6][7][8]
IndiaEOS-07
United States Janus-1
IndiaAzaadiSAT-2
156.3 kg (345 lb)
11.5 kg (25 lb)
7.3 kg (16 lb)
Satish Dhawan FLPLEOSuccess
SSLV-D2ISROEarth observation
Second developmental flight of the SSLV.[9][10][11] The purpose of SSLV-D2 is to launchEOS-07, Janus-1 andAzaadiSAT-2 into a 450-kilometer circular orbit and showcase the in-flight performance of the SSLV vehicle systems.[12] According to SSLV-D1 fault evaluation study, six onboard accelerometers detected vibrations that were longer in duration and more intense during the second stage of separation. In order to ensure that this problem doesn't occur again, the second stage detachment system in SSLV-D2 was modified to reduce vibrations. Furthermore, the system was redesigned to navigate utilizingNavIC data and readings will now be monitored for a longer time before entering rescue mode.[13] The separation mechanism, the equipment bay, and the on-board system for identifying malfunctioning sensors were further modified and five new pieces of hardware were installed. The electronics in SSLV-D2 worked successfully, as did the launch vehicle's new, affordable guidance and navigation system.[14]
16 August 2024
03:47[15][16]
IndiaEOS-08
India SR-0 DEMOSAT
175.5 kg (387 lb)
0.2 kg (0.44 lb)
Satish Dhawan FLPLEOSuccess
SSLV-D3ISROEarth observation
Third developmental flight and completion of SSLV Development Project.[17][18] The development team will continue to search for specific operational activities in the VTM stage before ISRO supplies the industry with SSLV technology for serial production. Any necessary fine-tuning will be finished prior to the technology transfer.[19][20] Repeatable flight performance of the SSLV vehicle systems has also been demonstrated by SSLV-D3.[21]

Future launches

[edit]
Date / time (UTC)Rocket,
Configuration
Launch sitePayloadOrbitUser
By Q1 2026[22]SSLVSHARIndia TBD
India PARIKSHIT
ISRO
Flight L1. First serial flight of the SSLV.[16]
NET 2026[23]SSLVSHARIndia TBD
India Azista60°
ISRO
Flight L2.[16]
2026[24]SSLVSHARAustralia OptimusLEOSpace Machines Company
Space MAITRI (Mission for Australia-India's Technology, Research and Innovation). First dedicated commercial SSLV launch. Payload weight 450 kg.[25]
TBD[26]SSLVSHARUnited StatesBlackSky Global-5, 6, and two othersLEOSpaceflight Industries
Manifested on a future SSLV commercial flight, four 56 kgBlacksky Global satellites to ~500 km circular orbit with 50° inclination.[27][28]

See also

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References

[edit]
  1. ^"AzaadiSAT – Space Kidz India". Retrieved8 July 2022.
  2. ^"SSLV-D1/EOS-2 Mission Brochure"(PDF). Archived fromthe original(PDF) on 3 August 2022. Retrieved4 August 2022.
  3. ^Madhumathi, D.S. (7 August 2019)."ISRO's mini launcher SSLV is unborn but has 2 flights booked".The Hindu.ISSN 0971-751X. Retrieved16 August 2019.
  4. ^"Department of Space, Annual Report 2020-2021"(PDF).ISRO. p. 23.Archived(PDF) from the original on 4 March 2021. Retrieved6 March 2021.EOS-02: EOS-02 is configured around MicroSat-TD bus platform to demonstrate launch on demand capability with SSLV. It is expected to meet the ever-increasing user demands for cartographic applications, urban and rural management, coastal land use and regulation, utilities mapping, development and various other GIS application. The mission life of the satellite is 9 months.
  5. ^Subramanian, T. s (11 August 2022)."ISRO chief S. Somanath interview | 'An anomaly for two seconds led to SSLV mission's underperformance'".The Hindu.ISSN 0971-751X. Retrieved11 August 2022.
  6. ^Kumar, Chethan (26 January 2023)."SSLV 2nd mission to carry US Sat, EOS-7; OneWeb Sats set to arrive Friday".Times of India. Retrieved27 January 2023.
  7. ^"ISRO planning to launch second development SSLV flight in Feb: S Somanath".mint. 4 January 2023. Retrieved4 January 2023.
  8. ^"Sslv Hardware Ready, Launch Likely In '23 | Bengaluru News - Times of India".The Times of India. 5 December 2022. Retrieved5 December 2022.
  9. ^Rajwi, Tiki (12 October 2022)."Second development flight of Small Satellite Launch Vehicle likely this year".The Hindu.ISSN 0971-751X. Retrieved13 October 2022.
  10. ^"SSLV-D2/EOS-07 MISSION".www.isro.gov.in. Retrieved5 February 2023.
  11. ^"SSLV-D2/EOS-07 Mission: Second Developmental Flight of SSLV".www.isro.gov.in. Retrieved5 February 2023.
  12. ^"Isro's SSLV-D2/EOS-07 mission successful; three satellites placed in orbits".The Times of India. 10 February 2023.ISSN 0971-8257. Retrieved16 August 2024.
  13. ^Singh, Abhinav (10 February 2023)."Mission accomplished: ISRO's SSLV-D2 launch explained".The Week. Retrieved16 August 2024.
  14. ^Dutt, Anonna (10 February 2023)."SSLV-D2 places three small satellites in orbit".The Indian Express. Retrieved16 August 2024.
  15. ^"Loksabha Q&A"(PDF). DEPARTMENT OF SPACE. 5 April 2023.
  16. ^abc"Integrated Launch Manifesto for 2023-24 (Q4) & 2024-25".NSIL. 8 February 2024.
  17. ^"SSLV-D3/EOS-08 Mission".ISRO. Retrieved16 August 2024.
  18. ^"SSLV development complete, says Isro chairman Somanath after today's launch".The Indian Express. 16 August 2024. Retrieved16 August 2024.
  19. ^C.S, Hemanth (16 August 2024)."ISRO successfully launches EOS-08 Earth Observation Satellite".The Hindu.ISSN 0971-751X. Retrieved16 August 2024.
  20. ^Dutt, Anonna (16 August 2024)."SSLV development complete, says Isro chairman Somanath after today's launch".The Indian Express. Retrieved16 August 2024.
  21. ^"Isro's SSLV-D3 mission successful, EOS-08 and SR-0 Demosat satellites placed in orbit".The Times of India. 16 August 2024.ISSN 0971-8257. Retrieved16 August 2024.
  22. ^"ISRO reveals new schedule, 7 launches planned in next 5 months".News9live. 4 November 2025. Retrieved22 November 2025.
  23. ^"Unstarred Question No. 406: Space Programmes and Missions"(PDF).Lok Sabha.Parliament of India. 24 July 2024.Archived(PDF) from the original on 28 July 2024. Retrieved28 July 2024.Following are the space programmes & missions planned in the year 2024. [...] One SSLV mission, to launch a technology demonstration Satellite (EOS-08).
  24. ^"SSLV's first dedicated commercial launch to put Australia-built satellite into orbit in 2026".The Economic Times. 26 June 2024. Retrieved28 July 2024.
  25. ^NSIL and SMC_SSLV (1).pdf
  26. ^"SSLV | BlackSky Global 5 & 6".Next Spaceflight. Retrieved6 September 2023.
  27. ^"Application for Earth Exploration Satellite Service by BlackSky Global, LLC"(PDF). FCC. 25 July 2019. p. 6. Archived fromthe original(PDF) on 28 July 2019. Retrieved28 July 2019.Global-5 through Global-8 are currently scheduled to be launched in November 2019 on a Small Satellite Launch Vehicle (SSLV) by the Indian Space Research Organization from its Satish Dhawan Space CenterPublic Domain This article incorporates text from this source, which is in thepublic domain.
  28. ^"BlackSky Global to launch four earth observation satellites on board ISRO SSLV-D2".The Tech Outlook. 25 February 2021. Retrieved6 September 2023.
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