Chethan Kumar Profile picture
Feb 7 10 tweets 4 min read
#JUSTIN | Senior @isro scientist S Unnikrishnan Nair has taken charge as the director of #VSSC. Nair will continue to also hold the position of director, #HSFC (Human Space Flight Centre) that is spearheading the #Gaganyaan programme. 1/n
He has B.Tech in mechanical engineering from Kerala University, ME in Aerospace engg from @iiscbangalore, and a PhD in Mechanical Engineering from @iitmadras. 2/n
“Some missions will be taken up on priority. SSLV will come in April, Gaganyaan test vehicle missions will be this year, and we are looking at #chandrayaan3. These are immediate goals. We'll continue with overall Gaganyaan activities and other projects," Nair told me. 3/n
A ‘Distinguished Scientist’ Nair is the first HSFC director who started his career in VSSC in 1985. During his tenure at VSSC, he has made significant contributions in launch vehicle mechanisms, acoustic protection systems and payload fairing areas. 4/n
“He was the member-secretary of the study team for Space Capsule Recovery Experiment (SRE) and deputy project director of SRE for deceleration and recovery systems... 5/n
...He was associated with devp of recovery systems for SRE & involved in SRE capsule recovery from sea. He was associated with the HSF prog since its inception as project director for techn devp activities,” VSSC’s description of Nair’s contributions reads. 6/n
He was also the payload director for CARE (Crew module Atmospheric Re-entry Experiment), where a prototype of Crew Module was flown successfully on December 18, 2014 in LVM3X vehicle. 7/n
Nair served as deputy director (structures entity) of VSSC till Jan 2017 concurrently with human space flight tech devp. He led the team for technology development of Crew Escape System and was its mission director for the Pad Abort Test held on July 5, 2018. 8/n
“Prior to the formation of HSFC, he was serving as programme director of Advanced Space Transportation System leading all advanced projects like human spaceflight, air breathing propulsion and reusable launch vehicle development,” VSSC said. 9/n
Nair at present is still in Bengaluru. He will be going to VSSC soon to take stock of things. And then we'll see a lot of shuttling. But thankfully, a lot of #Gaganyaan work is also happening at VSSC. n/n

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More from @Chethan_Dash

Feb 3
More #Space Updates: @isro , which has a packed 2022 has made considerable progress on #Chandrayaan3. With many related hardware and special tests successfully completed, the team is moving closer to integrated testing. Launch targeted this year. Maybe August. #Thread
@isro chairman S Somanath told me late last month: “Chandrayaan-3 has been going through a series of reviews, improvements, and strengthening. Some of these are based on the issues we’ve seen earlier....
...But the issues we’ve learnt so far may not be the only ones. The questions are many and we need to foresee a lot of them which may further require corrections. The hardware is under realisation too.”
Read 12 tweets
Feb 3
#JUSTIN | Indian Institute of Science @iiscbangalore says it has installed and commissioned Param Pravega, one of the most powerful supercomputers in the country, and the largest in an Indian academic institution as part of the National Supercomputing Mission (NSM). 1/n
The system, which is expected to power diverse research and educational pursuits, has a total supercomputing capacity of 3.3 petaflops (1 petaflop equals a quadrillion or 1,015 operations per second). 2/n
It has been designed by the @cdacindia. A majority of the components used have been manufactured and assembled within India, along with an indigenous software stack developed by C-DAC, a statement issued by IISc reads.
Read 11 tweets
Feb 3
Two #Gaganyaan crew abort tests & #Aditya top priority this yr. @isro will look to launch a relay sat too. Dept of Space, which got Rs 13.7k-cr in Budget has outcome targets for sat launches: 5 PSLV, 2 GSLV, 2 SSLV. #Thread

Story: toi.in/VHeJFZ48/a24gj
@isro working towards carrying out at least 2 test missions to establish crew abort and escape systems using the specially designed test vehicle this yr; 1st uncrewed mission expected early next year. Isro will also look to launch the 1st relay satellites for the mission
Somanath on special test vehicle: “Whenever a new agency develops a human-rated space capability, they go through various tests for building such capability. Before the human-rated vehicle flies we have to fly the critical aspects of this techn in a low-cost option..."
Read 15 tweets
Feb 1
Scientists from SAC and PRL recently demonstrated quantum entanglement based real time Quantum Key Distribution (QKD) over 300m atmospheric channel along with quantum-secure text, image transmission and quantum-assisted two-way video calling. @isro
The demonstration was conducted at SAC between 2 buildings 300m apart. This experiment & demonstration were repeated over several nights for repeatability and robustness of indigenously developed QKD system that can seamlessly generate, utilise secure keys for various apps.
@isro: Various images were encrypted using a generated quantum key and transmitted over a classical channel from one building to another building separated by 300m and decrypted at the receiving terminal in real time.
Read 9 tweets
Apr 28, 2021
1/n: While our colleagues have been reporting about families struggling and overwhelmed crematoria, forcing staff to work multiple shifts, I'd been trying to get numbers to see what this means. Here: For every Covid-19 death reported in B'luru, at least 2 bodies are cremated.
2/n: Long queues of ambulances and hearses outside crematoria, prima facie, appeared as a logistics issue but data from 12 dedicated crematoria collated between Mar 1&Apr 26 shows: For every Covid-19 death reported in Bengaluru, at least 2 bodies are being cremated.
3/n: Sample this: Crematoria staff from these places have cremated 3,104 bodies under Covid protocol in 57 days, while official number of deaths was only 1,422. The govt is yet to report deaths of 1,682 patients, which makes the gap in reporting and cremations more than double.
Read 12 tweets
May 23, 2020
1/n No amount of appreciation will be enough for the kind of work 3 fantastic photojournalists — Asif, Sunil and @chethan18 — have been doing for @TOIBengaluru. In this series of photos, I hope to celebrate their work. You are free to caption. I'm posting just 1 in each tweet.
2/n No amount of appreciation will be enough for the kind of work 3 fantastic photojournalists — Asif, Sunil and @chethan18 — have been doing for @TOIBengaluru. In this series of photos, I hope to celebrate their work. You are free to caption. I'm posting just 1 in each tweet.
3/n No amount of appreciation will be enough for the kind of work 3 fantastic photojournalists — Asif, Sunil and @chethan18 — have been doing for @TOIBengaluru. In this series of photos, I hope to celebrate their work. You are free to caption. I'm posting just 1 in each tweet.
Read 15 tweets

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