Official account of https://xitter.cf/t.co/g9yxEMibDU. News | Infographics | Mission Database & a Community Forum for Indian spaceflight enthusiasts 🇮🇳
Indian subcontinent
Joined June 2025
- Tweets840
- Following116
- Followers2.9K
- Likes1.5K
Pinned Tweet
ISRO successfully hot tested the Semicryogenic Engine PHTA at full 200T thrust for the first time at IPRC Mahendragiri. 35s test, 5s at 100%. Ninth PHTA test. SE2000 will power the SC120 stage replacing L110 on LVM3. #ISRO #SE2000 #LVM3 #Semicryogenic
GSLV-F18 / NVS-03 Mission Update:
ISRO's GSLV-F18 mission carrying the NVS-03 navigation satellite is scheduled to lift off on Friday, 30 October 2026, at 11:51 PM IST (18:21 UTC) from Satish Dhawan Space Centre (SDSC SHAR), Sriharikota.
Registration for the Launch View Gallery opens on Monday, 26 October 2026, at 18:00 IST (12:30 UTC).
Register here: lvg.shar.gov.in/VSCREGISTRAT…
#ISRO #GSLVF18 #NVS03 #NavIC #GSLV #Sriharikota #SDSCSHAR
indianspaceflight.in🇮🇳 retweeted
Astrobase is hiring 17 propulsion engineers for Bangalore.
For the first time in two years, Astrobase Space Technologies is expanding its world-class propulsion team, the team behind the development of a full-scale 800 kN FFSC cryogenic engine in less than two years.
With 17+ dedicated propulsion openings, this is a unique opportunity to build and take ownership of flight-ready FFSC rocket engines for reusable launch vehicles, based in Bangalore, India.
Explore all available opportunities: astpl.keka.com/careers
indianspaceflight.in🇮🇳 retweeted
For the first time in two years, Astrobase Space Technologies is expanding its world-class propulsion team, the team behind the development of a full-scale 800 kN FFSC cryogenic engine in less than two years.
With 17+ dedicated propulsion openings, this is a unique opportunity to build and take ownership of flight-ready FFSC rocket engines for reusable launch vehicles, based in Bangalore, India.
Explore all available opportunities: astpl.keka.com/careers
🚨 GSLV-F18 is set to lift off on 30 October 2026 🚀
GSLV-F18 will carry NVS-03 (IRNSS-1L) to GTO as part of the NavIC constellation.
With this mission ISRO aims to bring back the NavIC constellation to service (bare minimum of 4 satellites required for PNT services).
Source: indianexpress.com/article/in…
SDSC SHAR has floated a tender (SH202600128501, 23 Oct 2026) to manufacture, supply and erect the SC120 Retraction System Mast Structure at the Second Launch Pad, Sriharikota.
SC120 is the LOX + ISROSENE semi-cryo stage being developed for the upgraded LVM3.
📐 What's being built
• Two ~7.8 m tall steel masts on the Mobile Launch Pedestal (MLP), one on the LOX side and one on the ISROSENE side
• ~12 t of fabricated structure in total, mostly S690QL high-strength steel
⚙️ How it works (per drawings)
• Each mast holds an Umbilical Coupling Unit (UCU) mated to the vehicle at ~12.8 m elevation
• At retraction, a ~543 kg counterweight drops inside the mast and pulls wire ropes over a top pulley, swinging the UCU and hoses clear
• Shock absorbers at the base (235 kN, 150 mm stroke) arrest the counterweight
📅 Timeline
• Delivery to SHAR within 3 months of PO
• Erection on the MLP within 1 month of site clearance
• Bids due 12 Nov 2026, price bids open 23 Nov
💡 SC120 pad infrastructure at SLP is now moving into execution.
#ISRO #SC120 #LVM3 #Sriharikota #IndianSpace
NOTAM Alert: A new NOTAM (A3241/26) has been filed for GSLV-F18/NVS-03 mission from SHAR Range, Sriharikota. The window runs October 30 to November 11, 2026, with a daily slot of 17:00 to 21:00 UTC (22:30 to 02:30 IST).
Mapped: indianspaceflight.in/notam?t…
#IndianSpace #GSLV #GSLVF18 #NVS03 #NavIC #ISRO #Sriharikota
📢 Update: LPSC Bengaluru has extended the deadline for its Low Temperature Sensor Calibration Facility tender (No. LB 2026000322 01)
📅 Revised schedule:
• Bid deadline: 6 Nov 2026, 14:00 (earlier 16 Oct)
• Technical bid opening: 6 Nov 2026, 14:05
• Price bid opening: 20 Nov 2026, 14:00 (earlier 4 Nov)
All other terms and conditions remain unchanged.
#ISRO #LPSC #Cryogenic #Tender #IndianSpaceflight
🚨ISRO's LPSC Bengaluru has floated a tender for a Low Temperature Sensor Calibration Facility
LPSC Bengaluru has published a public tender (No. LB202600032201, dated 25 Sept 2026) for a Temperature Calibrator system to set up a Low Temperature Sensor Calibration Facility.
📌Tender Details
>Only Class-I and Class-II Local Suppliers (Make in India
>Pre-bid meeting: 6 Oct 2026 (online)
>Bid deadline: 16 Oct 2026, 14:00
>Price bid opening: 4 Nov 2026
>Custom-built system, delivery within 10 months of design approval, including installation
>12 month warranty
❄️Why does LPSC need this?
LPSC is home to ISRO's cryogenic and semi-cryogenic engines. The CE-20 engine on LVM3 (and Gaganyaan) runs on liquid hydrogen at around -253°C and liquid oxygen at around -183°C.
At these temperatures, accurate readings are critical for:
>Engine chilldown before ignition, to avoid turbopump cavitation
>Propellant density, which affects mixture ratio and thrust
>Tank pressurisation and boil-off management
>Engine qualification tests at IPRC Mahendragiri
Sensors like platinum RTDs, diodes and thermocouples behave very differently at cryogenic temperatures, so they must be calibrated across the actual range they will work in.
🎯Why in-house?
LPSC Bengaluru is ISRO's centre for transducer and sensor development
>Faster turnaround and traceable calibration data, critical for Gaganyaan
>Supports more LVM3 flights, the semi-cryo stage and future methalox engines
>The facility itself will be built by Indian industry
Better cryo sensors mean better engine data, and better data means safer rockets.
Source: ISRO share.google/QRs2QVJjllX7C5z…
#ISRO #LPSC #Cryogenic #LVM3 #Gaganyaan #CE20 #MakeInIndia #IndianSpaceflight #SpaceTech #Tender
🌍Chairman ISRO / Secretary DOS at the 77th International Astronautical Congress (IAC 2026), Antalya, Türkiye (5–9 Oct)
Organised by the International Astronautical Federation (IAF) and hosted by the Turkish Space Agency (TUA).
🎙️Key engagements:
• IAA Academy Day & Board of Trustees meeting (4 Oct)
• High-level plenary "One-to-One interviews with Global Space Agency Leaders": spoke on space benefits for all, space sustainability and international cooperation
• IAF Space Leaders' Summit (5 Oct): highlighted India's use of space tech for disaster mitigation
• Artemis Accords Principals meeting: discussed capability building for emerging space nations and taking Accords discussions to UNCOPUOS
🤝Bilateral meetings with NASA, ESA, CNES, ASI, ASA, CSA, UKSA, CONAE, JAXA, NLSA and Uzbekistan Space Agency
Topics: human spaceflight, lunar exploration, Bharatiya Antariksh Station (BAS) and capacity building
IN-SPACe Chairman Dr Pawan Goenka joined to present India's private space ecosystem
🇮🇳 Indian Space Pavilion set up jointly by ISRO, IN-SPACe and NSIL, showcasing 10 Indian space industries/start-ups
🥂 IN-SPACe Networking Reception (6 Oct) on India's emerging space ecosystem, also addressed by the Indian Ambassador to Türkiye
The focus was on seeking global partnerships for key technology areas under the Space-2047 vision.
#ISRO #IAC2026 #INSPACe #NSIL #BAS #ArtemisAccords
Department of Space, through the Construction & Maintenance Group (CMG) at SDSC SHAR, has invited e-tenders for construction of the Atmospheric & Space Science Research Facility (ASRF) building at Chandipur, Odisha.
💰Estimated cost: ₹906 lakh (~₹9.06 crore)
• Civil & Plumbing: ₹567 lakh
• Electrical: ₹297 lakh
• AC: ₹42 lakh
⏳Completion: 15 months from work order
👷Who can apply:
• Indian bidders only
• Built RCC framed buildings (civil + electrical) in the last 7 years: 1 work ≥ ₹724.8L, or 2 ≥ ₹543.6L, or 3 ≥ ₹362.4L
• At least one building with pile foundation
• Avg annual turnover ≥ ₹271.8L, solvency ≥ ₹362.4L
• Electrical & AC works can be done directly or via a declared specialised agency (valid electrical licence needed)
• JV/sub-contract experience not counted
📅Key dates:
• Document download: 23 Oct – 12 Nov 2026
• Bid deadline: 20 Nov 2026, 2:30 PM
• Technical bid opening: 23 Nov 2026
💵EMD: ₹18.12 lakh (MSEs exempt)
#ISRO #SDSCSHAR #Odisha #Chandipur #Tender
🌏 Astreva Aerospace, a student startup based in Vellore, Tamil Nadu, flew mission Vetriyaan, a near-space mission carried out using a high-altitude balloon 🌌
This is the onboard footage from the mission at its peak altitude of ~25.4 km. The mission lasted around 3 hours and 10 minutes. More details about the mission will be shared soon.
This footage was shared exclusively with @ispaceflight_in! Congratulations @ASTREVA_SPACE on your first near-space mission! Looking forward to your future missions!
indianspaceflight.in🇮🇳 retweeted
India is building the engines, the capsule and the docking skills to put its own astronauts on the Moon by 2040. A new feature maps the whole climb, from the test stands at Mahendragiri to the goal
Deep Analysis
Read at @ispaceflight_in, written by me.
indianspaceflight.in/forum/p…
ISRO has released the 4th Announcement of Opportunity (AO) for Aditya-L1, inviting solar physicists worldwide to propose observations from the Sun–Earth L1 point. #AdityaL1 #ISRO
This cycle offers observation time on two remote-sensing payloads:
🔹 VELC – Visible Emission Line Coronagraph
🔹 SUIT – Solar Ultraviolet Imaging Telescope
🗓️ Approved observations run January–March 2027
📅 Proposal deadline: 20 November 2026
ALT Image Credit: ISRO
indianspaceflight.in🇮🇳 retweeted
A Vikram T-shirt on the @NYSE floor!
And @bennbuilds talking about @reflectorbital’s upcoming launches with @SkyrootA. 🚀
indianspaceflight.in🇮🇳 retweeted
ELEKTRO-L5 (76°E) full-disk images received at my ground station: parabolic dish + #SKYSAW receiver. 14 to 16 Oct 2026, 12 passes.
Natural Color composite from the MSU-GS imager, decoded with SatDump.
One video per band 🧵👇 #ElektroL5 #weathersatellite #hamradio
indianspaceflight.in🇮🇳 retweeted
🛰️ ELEKTRO-L5 (76°E) full-disk images received at my ground station: parabolic dish + #SKYSAW receiver. 14–16 Oct 2026, 12 passes.
Channel 1 — 0.50–0.65 µm, visible (blue-green).
ISRO's U R Rao Satellite Centre (URSC) has floated an RFP (Request for Proposal) to manufacture aluminium honeycomb dampers for the landing legs of ISRO's lunar lander. These dampers crush on touchdown to absorb the landing shock.
📋 Tender No: URSC/PR/IS202600086801
6,600 dampers across 7 types:
• Footpad Damper Assembly – 300
• Tele Dampers 1–4 – 3,300
• Knee Dampers 1 & 2 – 3,000
How they're made:
• 0.25 mm AA2024 face sheets bonded to aluminium honeycomb cores
• Cured in an autoclave, then CNC-machined into rings and discs
• Every damper is pre-crushed by 2 mm before delivery
• Each footpad assembly stacks a 420 mm top damper (with 6 potted M6 inserts) on 3 bottom dampers
Vendor requirements:
• AS9100-compliant
• Mandatory in-house facilities: autoclave (2.5 m dia × 3 m), ISO Class 8 clean room, –20°C cold storage
• Must first build & qualify a test panel before production
• Indian firm, 3+ yrs in operation
• Single vendor, no split orders
Delivery in 3 batches. 30% advance only after qualification clears.
Key dates:
• Pre-bid meeting: 30 Oct 2026, 10:00 IST
• Bid due: 16 Nov 2026, 14:00 IST
• Bid opening: 16 Nov 2026, 14:30 IST
#ISRO #URSC #Moon