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2026-04-21T07:16:40Z

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{{Short description|Future Indian satellite}}
{{Use Indian English|date=January 2026}}
{{Use dmy dates|date=January 2026}}
{{Infobox spaceflight
| name =
| image =
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| mission_type = Technology demonstration
| operator = [[ISRO]]
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| spacecraft_bus = [[INSAT Satellite bus]]
| manufacturer = [[ISRO]]
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| launch_date = Q1 2026
| launch_rocket = [[Polar Satellite Launch Vehicle|PSLV]]
| launch_site = [[Satish Dhawan Space Centre#First Launch Pad|Satish Dhawan Space Centre FLP]]
| launch_contractor = [[ISRO]]
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The '''Technology Demonstration Satellite-01''' or '''TDS-01''' is a planned Indian geostationary orbit technology demonstration satellite carrying payloads for [[ISRO]]'s [[Institute for Plasma Research|Institute of Plasma Research]], [[Gandhinagar]] and the CSIR-CEERI, [[Pilani]]. Payloads to be tested included an internally developed 300 mN electric powered thruster, [[atomic clock]]s, [[Traveling-wave tube|travelling wave tube amplifiers]] (TWTA) and a quantum communication suite (QuTDS).<ref>{{Cite web |title=PSLV {{!}} TDS-01 Mission |url=https://rocketlaunch.org/mission-pslv-tds-01 |access-date=2026-01-10 |website=RocketLaunch.org |language=en}}</ref>

== Satellite technologies ==
35 new technologies, ranging from atomic clocks to an [[Ion thruster|Ion propulsion]] demonstration are planned for the satellite. The primary objective will be validation of a 300 milli-Newton (300 mN), 5.4 kW electric propulsion thruster developed by [[Liquid Propulsion Systems Centre|LPSC]]. This is expected to be an improvement over the smaller 75 mN thruster used on [[GSAT 9]]. It is hoped to reduce fuel load up to 90% with an initial demonstration quantity of less than 200 kg of [[Xenon]], as compared to two tonnes for other Geostationary satellites.<ref>{{Cite web |date=2026-01-03 |title=Gaganyaan, PSLV, SSLV private debut: Isro's big plans for 2026 revealed |url=https://www.indiatoday.in/science/story/isro-2026-space-odyssey-launch-schedule-gaganyaan-vyommitra-robot-electric-propulsion-satellite-india-space-missions-pslv-gslv-nvs-science-news-space-news-isro-news-2845459-2026-01-03 |access-date=2026-01-10 |website=India Today |language=en}}</ref><ref>{{Cite news |date=2025-12-14 |title=ISRO gets ready for one of its busiest times in recent memory, lines up seven launches |url=https://economictimes.indiatimes.com/news/science/isro-gets-ready-for-one-of-its-busiest-times-in-recent-memory-lines-up-seven-launches/articleshow/125962041.cms?from=mdr |access-date=2026-01-10 |work=The Economic Times |issn=0013-0389}}</ref><ref>{{Cite news |date=2025-02-18 |title=TDS-1, the satellite India's 1st pvt PSLV will launch to test 35 new tech |url=https://timesofindia.indiatimes.com/india/satellite-indias-1st-private-pslv-will-launch-tds-1-to-test-35-new-technologies/articleshow/118338465.cms |access-date=2026-01-10 |work=The Times of India |issn=0971-8257}}</ref> A 1000 hour Ground test of the plasma thruster was conducted on 27 March 2025 to test the flight model prior to integration. The plasma thruster will be use for orbit raising of satellite to the [[Geostationary orbit]].<ref>{{Cite web |title=ISRO successfully completes 1000hrs Life Test of Stationary Plasma Thruster for Spacecraft Electric Propulsion System |url=https://www.isro.gov.in/ISRO_successfully_conducts_1000hrs_life_test_of_SPT.html#:~:text=The%20erosion%20data%20measured%20during,Thruster%20undergoing%20life%20test |access-date=2026-01-10 |website=www.isro.gov.in}}</ref> Instrumentation to validate quantum key distribution technology and a traveling wave tube amplifier will also be demonstrated on this flight.<ref>{{Cite web |date=2025-12-14 |title=ISRO plans seven launches by March next year, first mission expected next week - BusinessToday |url=https://www.businesstoday.in/india/story/isro-plans-seven-launches-by-march-next-year-first-mission-expected-next-week-506587-2025-12-14 |access-date=2026-01-10 |website=Business Today |language=en}}</ref><ref>{{Cite web |last=JAGANNATHAN |first=VENKATACHARI |title=ISRO Readies For Crucial Space Launches |url=https://www.rediff.com/news/report/isro-readies-for-crucial-space-launches/20260110.htm |access-date=2026-01-10 |website=Rediff |language=en}}</ref> Over ₹18,700 lakhs have been allotted for hardware development for a five year span from 2021 to 2026.<ref>{{cite web|title=Parliament Question: Funds for ISRO Projects
|date= 18 December 2025 |url=https://www.pib.gov.in/PressReleasePage.aspx?PRID=2205847&reg=3&lang=2 |website=pib.gov.in|access-date=14 February 2026}}</ref>

== See also ==
* [[Technology Experiment Satellite|TES]]
* [[Ariane Passenger Payload Experiment|APPLE]]

== References ==
{{Reflist}}

== External links ==
{{Indian spacecraft}}
{{Orbital launches in 2026}}

[[Category:Satellites in geostationary orbit]]
[[Category:Satellites of India]]

{{India-spacecraft-stub}}

TDS-01 - Revision history

Serzohe: created - done