Root Privileges

Month: April 2024

  • Infinity in 15 kilograms

    While space is hard, there are also different kinds of hardness. For example, on April 15, ISRO issued a press release saying it had successfully tested nozzles made of a carbon-carbon composite that would replace those made of Columbium alloy in the PSLV rocket’s fourth stage and thus increase the rocket’s payload capacity by 15 kg. Just 15 kg!

    The successful testing of the C-C nozzle divergent marked a major milestone for ISRO. On March 19, 2024, a 60-second hot test was conducted at the High-Altitude Test (HAT) facility in ISRO Propulsion Complex (IPRC), Mahendragiri, confirming the system’s performance and hardware integrity. Subsequent tests, including a 200-second hot test on April 2, 2024, further validated the nozzle’s capabilities, with temperatures reaching 1216K, matching predictions.

    Granted, the PSLV’s cost of launching a single kilogram to low-earth orbit is more than 8 lakh rupees (a very conservative estimate, I reckon) – meaning an additional 15 kg means at least an additional Rs 1.2 crore per launch. But finances alone are not a useful way to evaluate this addition: more payload mass could mean, say, one additional instrument onboard an indigenous spacecraft instead of waiting for a larger rocket to become available or postponing that instrument’s launch to a future mission.

    But equally fascinating, and pride- and notice-worthy, to me is the fact that ISRO’s scientists and engineers were able to fine-tune the PSLV to this extent. This isn’t to say I’m surprised they were able to do it at all; on the contrary, it means the feat is as much about the benefits accruing to the rocket, and the Indian space programme by extension, as about R&D advances on the materials science front. It speaks to the oft-underestimated importance of the foundations on which a space programme is built.

    Vikram Sarabhai Space Centre … has leveraged advanced materials like Carbon-Carbon (C-C) Composites to create a nozzle divergent that offers exceptional properties. By utilizing processes such as carbonization of green composites, Chemical Vapor Infiltration, and High-Temperature Treatment, it has produced a nozzle with low density, high specific strength, and excellent stiffness, capable of retaining mechanical properties even at elevated temperatures.

    A key feature of the C-C nozzle is its special anti-oxidation coating of Silicon Carbide, which extends its operational limits in oxidizing environments. This innovation not only reduces thermally induced stresses but also enhances corrosion resistance, allowing for extended operational temperature limits in hostile environments.

    The advances here draw from insights into metallurgy, crystallography, ceramic engineering, composite materials, numerical methods, etc., which in turn stand on the shoulders of people trained well enough in these areas, the educational institutions (and their teachers) that did so, and the schooling system and socio-economic support structures that brought them there. A country needs a lot to go right for achievements like squeezing an extra 15 kg into the payload capacity of an already highly fine-tuned machine to be possible. It’s a bummer that such advances are currently largely vertically restricted, except in the case of the Indian space programme, rather than diffusing freely across sectors.

    Other enterprises ought to have these particular advantages ISRO enjoys. Even should one or two rockets fail, a test not work out or a spacecraft go kaput sooner than designed, the PSLV’s new carbon-carbon-composite nozzles stand for the idea that we have everything we need to keep trying, including the opportunity to do better next time. They represent the idea of how advances in one field of research can lead to advances in another, such that each field is no longer held back by the limitations of its starting conditions.

  • Justice delayed but a ton of bricks await

    From ‘SC declines Ramdev, Patanjali apology; expresses concern over FMCGs taking gullible consumers ‘up and down the garden path’’, The Hindu, April 10, 2024:

    The Supreme Court has refused to accept the unconditional apology from Patanjali co-founder Baba Ramdev and managing director Acharya Balkrishna for advertising medical products in violation of giving an undertaking in the apex court in November 2023 prohibiting the self-styled yoga guru. … Justices Hima Kohli and Ahsanuddin Amanullah told senior advocate Mukul Rohatgi that Mr. Ramdev has apologised only after being caught on the back foot. His violations of the undertaking to the court was deliberate and willful, they said. The SC recorded its dissatisfaction with the apology tendered by proposed contemnors Patanjali, Mr. Balkrishna and Mr. Ramdev, and posted the contempt of court case on April 16.

    … The Bench also turned its ire on the Uttarakhand State Licensing Authority for “twiddling their thumbs” and doing nothing to prevent the publications and advertisements. “Why should we not come down like a ton of bricks on your officers? They have been fillibustering,” Justice Kohli said. The court said the assurances of the State Licensing Authority and the apology of the proposed contemnors are not worth the paper they are written on.

    A very emotionally gratifying turn of events, but perhaps not as gratifying as they might have been had they transpired at the government’s hands when Patanjali was issuing its advertisements of pseudoscience-backed COVID-19 cures during the pandemic. Or if the Supreme Court had proceeded to actually hold the men in contempt instead of making a slew of observations and setting a date for another hearing. Still, something to cheer for and occasion to reserve some hope for the April 16 session.

    But in matters involving Ramdev and Patanjali Ayurved, many ministers of the current government ought to be pulled up as well, including former Union health minister Harsh Vardhan, Union micro, small, and medium enterprises minister Nitin Gadkari, and Prime Minister Narendra Modi. Modi’s governance and policies both written and unwritten enabled Patanjali’s charlatanry while messrs Vardhan and Gadkari were present at an event in February 2021 when Patanjali launched a product it claimed could cure COVID-19, with Vardhan – who was health minister then – speaking in favour of people buying and using the unproven thing.

    I think the Supreme Court’s inclination to hold Ramdev et al. in contempt should extend to Vardhan as well because his presence at the event conferred a sheen of legitimacy on the product but also because of a specific bit of theatrics he pulled in May the same year involving Ramdev and former Prime Minister Manmohan Singh. Ramdev apologising because that’s more politically convenient rather than because he thinks he screwed up isn’t new. In that May, he’d called evidence-based medicine “stupid” and alleged such medicine had killed more people than the virus itself. After some virulent public backlash, Vardhan wrote a really polite letter to Ramdev asking him to apologise, and Ramdev obliged.

    But just the previous month, in April 2021, Manmohan Singh had written a letter to Modi suggesting a few courses of action to improve India’s response to the virus’s spread. Its contents were perfectly reasonable, yet Vardhan responded to it accusing Singh of spreading “vaccine hesitancy” and alleging Congress-ruled states were responsible for fanning India’s deadly second wave of COVID-19 infections (in 2021). These were all ridiculous assertions. But equally importantly, his lashing out stood in stark contrast to his letter to Ramdev: respect for the self-styled godman and businessman whose company was attempting to corner the market for COVID-19 cures with untested, pseudo-Ayurvedic froth versus unhinged rhetoric for a well-regarded economist and statesman.

    For this alone, Vardhan deserves the “ton of bricks” the Supreme Court is waiting with.

  • Feel the pain

    Emotional decision making is in many contexts undesirable – but sometimes it definitely needs to be part of the picture, insofar as our emotions hold a mirror to our morals. When machines make decisions, the opportunity to consider the emotional input goes away. This is a recurring concern I’m hearing about from people working with or responding to AI in some way. Here are two recent examples I came across that set this concern out in two different contexts: loneliness and war.

    This is Anna Mae Duane, director of the University of Connecticut Humanities Institute, in The Conversation:

    There is little danger that AI companions will courageously tell us truths that we would rather not hear. That is precisely the problem. My concern is not that people will harm sentient robots. I fear how humans will be damaged by the moral vacuum created when their primary social contacts are designed solely to serve the emotional needs of the “user”.

    And this is from Yuval Abraham’s investigation for +972 Magazine on Israel’s chilling use of AI to populate its “kill lists”:

    “It has proven itself,” said B., the senior source. “There’s something about the statistical approach that sets you to a certain norm and standard. There has been an illogical amount of [bombings] in this operation. This is unparalleled, in my memory. And I have much more trust in a statistical mechanism than a soldier who lost a friend two days ago. Everyone there, including me, lost people on October 7. The machine did it coldly. And that made it easier.”

  • Cheers for everyone but the bustard

    Behold, the legerdemain of spinning bad news into good:

    Setting aside the meaningless headline, we have a lede (and the rest of the article, for that matter) that claims the Supreme Court of India “struck” a fine balancing act between the transition to renewable energy and protecting the great Indian bustard by rolling back a complete ban on overhead cables in the birds’ habitat.

    Accepting sustained arguments from attorney general R Venkataramani, solicitor general Tushar Mehta and additional SG Aishwarya Bhati, the bench said, “India’s commitment to promoting renewable energy sources, particularly in regions like Gujarat and Rajasthan, aligns with its broader sustainable development objectives.”

    Pats on the back for everyone.

    Except while the Supreme Court is switching between imposing and revoking a ban on overhead cables and the newspaper declaring this a pro-climate triumph, there is no indication in the report that the petition before the Supreme Court is to move the power cables underground, protecting both the endangered bustards and the region’s power-generation potential.

    The apex court has now asked an expert committee to examine the feasibility of underground cables and their costs, which the promoters of solar- and wind-power projects in the region have contended are too high. As such, the court’s order has created a false balance between the birds and the profit margins of these promoters, as if to say they’re equally legitimate and equally valuable.

    Such are the perils of government by Supreme Court.

  • It’s the little things

    ‘What Muslim Women Face Every Day at Work’, The Wire, April 4, 2024:

    [Nisha] Shah, who prays five times a day, says such Islamophobia at the workplace – amongst highly educated Indian youth – has become more audacious. She says her two-three prayer breaks are shorter than the frequent smoke and tea breaks her colleagues take. But she was asked to leave her religion out of the office. There was no holiday for Eid and no concessions to her schedule during the month of Ramzan. But when the Hindu festival of Diwali came around, the company organised pujas at work.

    It’s the little stuff like this – unearthed expertly, laboriously by Mahima Jain – that really drives the pseudo-secularist point home on the ground. In my limited experience, I’ve noticed this kind of discrimination, motivated by anti-Muslim sentiment and sustained by kettle logic, in some research institutes, journalism establishments, and apartment complexes. Social anthropologist Renny Thomas’s book Science and Religion in India: Beyond Disenchantment is in this regard an eye-opener.

    Some people exchange polite wishes for Islamic festivals even if they’re not Muslim themselves but by and large what on-premise celebrations the powers that be consider appropriate are very different for Eid and Mawlid versus Dussehra and Janmashtami. And when these powers don’t see value in or actively ignore the value of affirmative action in the cultural sphere of the space they administer, the differences hang like a reminder that, even if physical violence isn’t in the offing, “the seeds of hatred” are there, as Shah says.