Chethan Kumar Profile picture
Nov 10 10 tweets 4 min read
#Space #UPDATE #Thread

Earth observation satellite by @PixxelSpace #Anand will be among seven satellites @NSIL_India will launch as ride-sharing payloads along with @isro’s #Oceansat3, tentatively scheduled to be launched on a #PSLVC54 on Nov 26. 1/n

Pic for representation Image
Anand will be the first privately developed Earth observation satellite to be launched from India and second from the Pixxel stable. 2/n
The firm had launched Shakuntala using a SpaceX rocket in April 2022. Aside from Anand, NSIL will launch two private communication satellites (Thybolt) for Dhruva Space and four other satellites (Astrocast) for US firm Spaceflight. 3/n
“All of them are through commercial contracts and together the seven satellites through NSIL will weigh around 50 kg. The four satellites for Spaceflight are being built by Swiss firm Astrocast,” an official said. 4/n
Pixxel, which was initially looking at launch services in Russia, decided to launch its first satellite on an Indian launch vehicle in December 2020. 5/n
Following that #Anand was scheduled to be launched on the #PSLV51 in February 2021 making it the firm’s first launch, but the firm withdrew the satellite owing to technical issues. 6/n
“Due to certain software issues that surfaced during the final satellite testing, we have decided not to proceed with our launch..” the firm had then said. It later launched Shakuntala on SpaceX. 7/n
Sources in Isro said that the firm has now resolved all the technical issues and the satellite was ready for launch along with Oceansat-3 or Earth Observation Satellite-6 (EOS-6). 8/n
Hyderabad-based Dhruva, which space qualified its satellite orbital deployer (DSOD 1U) earlier this year, will launch two tech-demonstrator satellites — their Thybolt-1 and Thybolt-2. 9/n
Besides the NSIL payloads and #Oceansat3, the PSLV will also put into orbit BhutanSat — a satellite for Bhutan as part of New Delhi’s diplomacy. n/n

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More from @Chethan_Dash

Nov 12
#Thread #Space #India

Space startup @BellatrixAero today opened a new facility in Bengaluru that would expedite the firm's prototyping and rolling out of new models, supplementing its testing lab incubated at the @iiscbangalore. 1/n Image
This facility is part of the company’s expansion plans that will also see a $76-million manufacturing facility come up near @BLRAirport by the end of next year. I first reported that Bellatrix signed an MoU regarding this ($76-mn) facility with the state government. 2/n
The new facility was inaugurated by @isro chairman S Somanath, who visited the firm’s IISc lab before inaugurating this. Somanath expressed confidence that private sector firms like Bellatrix could address some key challenges in the Space sector and complement Isro. 3/n Image
Read 8 tweets
Nov 10
#UPDATE #Rockets #Thread

Late yesterday, @isro said that the CE20 cryogenic engine indigenously developed for #LVM3 (#GSLVMk3) has been successfully hot-tested “at an uprated thrust level of 21.8 t for the first time”. 1/n Image
“This will enhance #LVM3 payload capability up to 450kg with additional propellant loading. Major modifications carried out on this test article compared to previous engines was introduction of Thrust Control Valve (TCV) for thrust control,” Isro said. 2/n
Additionally, the space agency said a 3D-printed LOX (liquid oxygen) and LH2 (liquid hydrogen) turbine exhaust casings were inducted in the engine for the first time. 3/n
Read 5 tweets
Nov 3
#JUSTIN #Important #Thread 

Indian radar-imaging satellite — #Risat2 — has made an uncontrolled re-entry into Earth’s atmosphere and landed at the predicted impact point in the Indian Ocean near Jakarta. 1/n Image
The re-entry happened on October 30, at around 12.06am, the Indian Space Research Organisation — @isro —has confirmed. 2/n
“Launched onboard PSLV-C12 in April 2009, Risat-2 weighed about 300kg and had carried 30kg fuel for an initial designed life of four years...." 3/n
Read 12 tweets
Nov 3
#Space #Update #Thread

An R&D centre & manufacturing factory for #Spacetaxis or #OTVs & propulsion systems for rockets & satellites are expected to begin first phase ops on a 5-acre facility at the aerospace park near @BLRAirport by late 2023. 1/n
The new facility, which once fully operational is expected to be worth $76mn will be established by @BellatrixAero, which signed an MoU with the government of Karnataka on Wednesday. 2/n
“Having a wide range of thrusters designed to overcome challenges associated with incumbent tech by providing better performance, longer life, reduced costs etc, we now aim for large scale production and research facilities,” Yashas Karanam of @BellatrixAero told me. 3/n
Read 10 tweets
Nov 1
Here We Go: #Update #Thread

As #GSLVMk3 or #LVM3 prepares for its second commercial launch, @isro efforts on enhancing its weight-lifting capacity is gaining pace. I hear that the qualification tests for semi-cryo (SC120) are expected to be completed in a couple of months. 1/n
#GSLVMk3 is India’s heaviest rocket yet. Here’s some perspective: Between May 26, 1999 and Oct 22, 2022, @isro launched 345 foreign satellites, all on #PSLV, which together weigh 9,326.4kg. On Oct 23, 2022, in its first commercial mission, #LVM3 launched 5,796kg. 2/n
Of course, these missions are incomparable given that most of the foreign satellites launched by PSLV were ride-sharing payloads and include tens of small, micro and nano satellites… 3/n
Read 14 tweets
Oct 29
#UPDATE #JUSTIN #Thread

Yesterday, @isro successfully carried out the flight acceptance hot test of a CE-20 engine for a duration of 25 seconds at its high altitude test facility in Mahendragiri. 1/n Image
This engine is earmarked for the next GSLV-Mk3 mission — the LVM3-M3 — identified for the launch of the next set of 36 OneWeb India-1 satellites. 2/n
"The cryogenic upper stage of the LVM3 vehicle (C25 stage) is powered by a CE-20 engine working with the LOX-LH2 propellants combination. This engine develops a nominal thrust of 186.36 kN in vacuum," Isro said. 3/n
Read 7 tweets

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