Engineering:GSAT-20

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Short description: Indian communications satellite

GSAT-20
Mission typeCommunication
OperatorNew Space India Limited[1][2]
Mission duration15 years (estimated)
Spacecraft properties
BusI-3K Bus
ManufacturerISRO Satellite Centre
Space Applications Centre
Power2 solar array batteries
Start of mission
Launch dateQ2 2024 (planned)[3]
RocketFalcon 9 Block 5[4]
Launch siteCC,
SLC-40/LC-39A
ContractorSpaceX
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude55° East[citation needed]
 

GSAT-20 (also known as CMS-03 or GSAT-N2) is a communication satellite jointly being developed by Indian Space Research Organisation Satellite Centre and Liquid Propulsion Systems Centre[5] and will be launched by A SpaceX Falcon 9.[6] The GSAT-20 satellite is funded, owned and operated by New Space India Limited.[7] The entire capacity onboard CMS-02 satellite will be leased to Dish TV.[8][9] GSAT-20 will be a continuation of GSAT series of communication satellites. The satellite is intended to add data transmission capacity to the communication infrastructure required by Smart Cities Mission of India.

It will be the first fully Electric Propulsion/EP enabled satellite which can be five to six times more efficient than chemical-based propulsion.[5] It will be the first ISRO made satellite to move from Geostationary transfer orbit to Geosynchronous orbit using Electric Propulsion.[10]

Payload

The satellite features a Ka-band high-throughput communications payload with 70 Gbit/s[11] throughput utilizing 40 beams offering HTS capacity of nearly 48Gpbs.[12] Each beam will have 2 polarisations, effectively making them 80 beams.[13]

Launch

The satellite was initially expected to be launched in 2024 on an LVM 3,[3][14][15] but shifted to Falcon 9 due to the satellite being 700 kilos overweight for a successful launch on indigenous platforms.[16]

Hence ,The commercial arm of ISRO ,New Space India Limited has signed a contract with SpaceX for a possible liftoff in the second quarter of 2024. The SpaceX deal also signifies a significant as till now India had relied heavily on the France led Arianespace consortium to launch its the heavy communication satellites , particularly on the now retired Ariane 5, which ISRO was hoping as a backup. The fact that the next few launches of the Ariane 6, its successor having being both booked and delayed for launch, ISRO turned to SpaceX. India's own rockets lack the capacity for launching very heavy satellites to the geostationary orbit beyond 4 ton class, a problem that is planned to be fixed with the introduction of the NGLV.[17][18]

See also

  • Indian Regional Navigational Satellite System
  • GSAT

References

  1. ↑ Kumar, Chethan (18 February 2021). "Space PSU NSIL to launch satellite for TataSky". The Times of India. https://timesofindia.indiatimes.com/india/space-psu-nsil-to-launch-sat-for-tatasky/articleshow/81081943.cms. 
  2. ↑ "Annual Report 2017-18, Department of Space". Department of Space, Government of India. https://www.isro.gov.in/annual-report-2017-18-english. 
  3. ↑ 3.0 3.1 "ISRO planning to launch second development SSLV flight in Feb: S Somanath". Mint. 4 January 2023. https://www.livemint.com/science/news/isro-planning-to-launch-second-development-sslv-flight-in-feb-s-somanath-11672838016053.html. "To facilitate in-flight connectivity for automobile services using the Ka-band the space agency is planning to launch the GSAT-20 high throughput satellite next year." 
  4. ↑ "Falcon 9 Block 5 | GSAT-20" (in en). https://nextspaceflight.com/launches/details/NextSpaceflight.com/launches/details/753. 
  5. ↑ 5.0 5.1 D.S, Madhumathi (May 1, 2017). "GSAT-9 heralds cost-saving electric propulsion". The Hindu. The Hindu (Bengaluru). http://www.thehindu.com/sci-tech/science/gsat-9-heralds-cost-saving-electric-propulsion/article18347912.ece. 
  6. ↑ "Falcon 9 Block 5 | GSAT-20" (in en). https://nextspaceflight.com/launches/details/NextSpaceflight.com/launches/details/753. 
  7. ↑ "News | NSIL". https://www.nsilindia.co.in/news-details/604. 
  8. ↑ Kumar, Chethan (18 February 2021). "Space PSU NSIL to launch satellite for TataSky". The Times of India. https://timesofindia.indiatimes.com/india/space-psu-nsil-to-launch-sat-for-tatasky/articleshow/81081943.cms. 
  9. ↑ "Space PSU NSIL to launch GSAT-20 on SpaceX’s Falcon 9 this year". The Times of India. 2024-01-03. ISSN 0971-8257. https://timesofindia.indiatimes.com/india/space-psu-nsil-to-launch-gsat-20-on-spacexs-falcon-9-this-year/articleshow/106494677.cms?from=mdr. 
  10. ↑ RAMACHANDRAN, R. (June 26, 2017). "ISRO's Mk III Launched a Little-Known Instrument Called GRASP – This Is What It Does". The Wire. The Wire (Bengaluru). https://thewire.in/151354/grasp-isro-mk3-radiation-gsat-20/. 
  11. ↑ Nair, Avinash (May 17, 2017). "ISRO's GSAT-trio to usher in high-speed internet era". The Indian Express (Ahmedabad). http://indianexpress.com/article/technology/tech-news-technology/isros-gsat-trio-to-usher-in-high-speed-internet-era-4660849/. 
  12. ↑ "GSAT-20". http://space.skyrocket.de/doc_sdat/gsat-20.htm. 
  13. ↑ Vasudeva, Akshay (May 22, 2017). "India to enter high-speed internet era with Isro's new satellites". India: mi.com. http://c.mi.com/thread-225508-1-0.html. 
  14. ↑ "Coming soon, higher internet speeds" (in en). @businessline. https://www.thehindubusinessline.com/info-tech/coming-soon-higher-internet-speeds/article25498231.ece. 
  15. ↑ "Annual Report 2018". ISRO. https://www.isro.gov.in/sites/default/files/annualreport2018-19.pdf. 
  16. ↑ "Falcon 9 Block 5 | GSAT-20" (in en). https://nextspaceflight.com/launches/details/NextSpaceflight.com/launches/details/753. 
  17. ↑ "In A 1st, India To Launch Its Big Communications Satellite On SpaceX Rocket". https://www.ndtv.com/india-news/in-a-first-india-to-launch-its-satellite-on-spacexs-falcon-9-rocket-4792333. 
  18. ↑ Bureau, The Hindu (2024-01-03). "ISRO’s commercial arm to launch GSAT-20 satellite on SpaceX’s Falcon-9 in 2024" (in en-IN). The Hindu. ISSN 0971-751X. https://www.thehindu.com/sci-tech/science/isros-commercial-arm-to-launch-gsat-20-satellite-on-spacexs-falcon-9-in-2024/article67700823.ece. 



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