Thursday 11 April 2024

A Simulation for Smell?

 We have simulation software packages to mimic a lot of physical and chemical phenomena, translating them into inputs for our sense-organs.

Why is it that smell isn't one of these yet? Could we have a smell based cinematic experience A softwware simulation of smell?

Sight is based on electromagnetic waves within the visible spectrum, sound is based on pressure waves within an appropriate frequency, touch - at least temperature is based on molecule vibration and again the infrared portion of the EM spectrum.

What are taste and smell? Direct chemical contact?

Tuesday 31 January 2023

An Engineer's Prayer

नमस्ते प्रकृते माते, सुखजीवनकारणी,
गणितादिसकृतम् यन्त्रम्, चलेत् सम्यक् तवाज्ञया।

Tuesday 22 March 2016

Aero's Plight - The Complaints Continue

I logged into Quora today as usual, and was greeted with a couple of messages -both requesting guidance regarding aerospace engineering - nothing new. I was about to close the window when I saw the phrase "end my life" in one of the two messages. My eyes quickly looked at the time when the message was received. 3 minutes ago. My heart began pounding. I swiftly typed out two replies to the man who had messaged me, giving him my number and asking him to give me a missed call, or to at least reply.

And then, keeping an eye on my phone, I sat back to read his message. He had completed his B.Tech in aerospace engineering in 2012 - he was senior to me by a year. I didn't have to read any further - it was going to be the same story - with him not having cleared IIT's GATE examination (results came out this week), and having absolutely no option ahead. And upon reading it, I realised that my prediction was right. A true dead end, yes. I have now become accustomed to answering such messages, but this one was over the edge. Depression? A suicide threat? I certainly wasn't going to be the right person, but this wasn't the time to look for an expert. He called me, and after a nice, long chat, I had him convinced that things weren't going to remain this bad, and that there were options ahead. I managed to convince him to approach Professors at an IIT near his place, and to try to do research under him with or without pay, so that he could possibly end up publishing a research paper - a suggestion I give to several people.

After nearly 20 minutes of mutual listening and talking, he told me that he felt much better - that he would try approaching Professors, and would remain in touch with me in case he needed guidance.

As I hung up, memories of how my classmates and close friends suffered (some continue to suffer) the consequences of picking a specialised course for their Bachelor's engineering degree came to me. My new friend's rant may have looked marginally melodramatic, but the crux of it was true.

His story summarises those of thousands of aeronautical/aerospace engineering graduates throughout India.

"Pathetic" will be a mild term to describe the situation of India's aero students. "Not that great" is what I'd say about aero at IIT Bombay, one of the best places for it in the country.

With core aerospace companies preferring mechanical engineers over aero, and non core companies simply ignoring this course in their list of eligible candidates, aerospace engineers are left stranded in that large island of vain jobseekers that spans the length and breadth of this great peninsula.

While this is the situation on one side, colleges happily open aerospace engineering departments, attracting misguided youngsters to fill seats, year after year. My own college, Madras Institute of Technology, Chennai has seen a steady growth of number of students joining aeronautical engineering. Ironically though, placements statistics have gone down - not merely by percentage, even in whole number counts. The situation is ten times worse at other colleges in India (particularly private ones) - with students realising the lack of options and dreading the approach of their graduation.

I will not deny it if this student is blamed for his own incapacity in clearing the GATE examination. The complaint I have is that there is virtually no other option, even for someone willing to let go of this field. Not all students can afford an MS abroad or an MBA (in India or abroad) - no PSU treats GATE Aerospace Engineering's (GATE Mechanical is different) score as a criterion for recruitment (DRDO is recruiting based on GATE Aerospace this year, but 5 students is far too less. A commendable step though).

I do not blame the system for this person's plight - he should not have blindly followed his heart, or someone's advice without researching upon career paths in aero engineering, but the system is to be blamed too: for letting him build castles upon a baseless dream, and then standing aside and watching it crumble. This is heartless, cruel..

Colleges owe students options. Colleges which offer them this course, the government which approves them to offer these courses - it should be taken care that at least a handful of students get some jobs. If that can't be ensured, only a handful of Institutions should be allowed to offer this course - perhaps just IITs and a couple of other Universities.

This problem is very real, but hardly known. Talks of aerospace being a booming industry are simply pointless speculations. If left uncared for, the number of unemployed aero engineers is going to grow exponentially.

I look around to see the IIT Bombay campus where life goes on so very smoothly for me - the department where I attend classes, the hostel mess whose food I complain about - all this is someone's dream. Someone who is ready to die if he doesn't achieve it.

This isn't fair. I've got to do something about it.

Someone has to.

Monday 27 July 2015

A Saint moves on...

It is surprising to note how some faceless, yet familiar men's passing affects us deeply, sometimes even more than that of people we've known...

The only such experience I can recount is the passing of Dr. R. D. Sharma, the messiah of school students. And today, it came down as nothing short of a shock to me when my mother called to tell me that Dr. Avul Pakir Jainulabdin Abdul Kalam had breathed his last. Not a faceless man to me - in fact, I've had the fortune of seeing this man, this seer at the very college where he studied, where I studied....

Words fail to come forth, I have been urged to meet this man by my well wishers, and I have ruthlessly postponed my doing so, for years - all this now adds cumulatively to the regret that engulfs me, choking me...

The man who pushed the boundaries of engineering in India, of rocket science, the father of India's missile programme.... an unforgettable President, and exemplary human being and a beloved teacher...

It hurts - hurts like a near family member has gone.. There will be time to recollect his contributions to India, his speech at Hangar I, MIT, his interaction with students, but all I can think for now is that we can never hear that sweet voice again....

This may be news to many, but it is a personal loss to us, students of MIT, to the country and the world as a whole.. A simple, honest, sincere, brilliant man whose mortal coils may have been wiped from the face of the planet, but his memories shall stay in our hearts forever..

I was told that he had collapsed while talking to students - the very shoulders that supported the country, gave it hope... Nothing less that an icon for every Indian... Nothing less than a saint..

Thursday 5 February 2015

Why Aerospace?

Atrocity has had a new definition in my dictionary since yesterday, when I saw the following page on Bhabha Atomic Research Centre’s recruitment website. (http://182.18.176.218/barconlineexam/engineer/importantinfo_eligibilitycriteria.php)



Irreversibility is a tough pill to swallow, and over 6000 students begin their lifelong struggle with its repercussions every year, from the minute they choose (or are chosen by) Aeronautical Engineering as their jeevansathi.

I write this article at a juncture where the country is, well, hopefully, awakening to the foolishness of its youth blindly pursuing engineering - at least, that's what I am able to conclude, from the exponential increase in humorous and serious remarks on the state of engineering students, and engineering in general, in India, and I feel that there is a crying need in the country for this sort of take on aeronautical engineering, a field, I believe, is one of the most misunderstood disciplines of engineering.

Engineering needs no introduction in India, but perhaps Aeronautical Engineering does. It most certainly deserves a disambiguation. So here's to all those who get all excited when we answer their question regarding our qualification - Oh, and by the way, we're extremely obliged to you, you are the only people who seem to show us any respect - swap with us for a month and you'll sympathize with us for the rest of your lives. In short, we picked this field hoping it would turn tables, but all that turned were heads.

We Aeronautical Engineers are like upper caste folk. In fact we are like brahmins. Apparently the uppermost caste, and the most oppressed lot, we flaunt our "cool" titles, the only remainder of the ancestral grandeur we claim to have once had, which mock at our current plight and stand as one of the best examples of paradox in Indian society. Only, we had no past where any of our ancestors can be accused of tormenting the "lower" discipline folk. We face challenges nearly every week, when we are confronted with questions about electronic devices in the cockpit, as to whether we work at the airport or are pilots, demands as to why crashed aeroplanes haven't been found yet, and the occasional wannabe-scientifically-minded question, so ambiguous and pathetically crazy that we wonder if the person asking the question is even sure of what he/she wants to ask. To to top it all, we are often accused of not being good engineers because we aren't able to tell the difference between an A350 and a Boeing 787, or simply because we tend to pick up a calculator to perform arithmetic calculations ("You are an engineer and you want a calculator to do this simple calculation?")

Right, you are now clear that we need not know answers to any of the above questions. So what do we know, you ask? Well, we have willingly or forcibly learnt Aircraft Structures (more commonly known among the Aero fraternity as just Structures), Aerodynamics, Propulsion and Flight Mechanics, seemingly shallow, yet reaching great depths occasionally, consciously or otherwise.

We're possibly the best B.Techs in structural mechanics, certainly overtaking mechanical engineers, perhaps on par with our civil counterparts, only that we are good at elasticity, vibration, finite element methods and experimental stress analysis instead of soil mechanics and the like. Our knowledge of fluid mechanics is certainly unmatched by any other graduates.

Aircraft propulsion and flight mechanics, being specific to this field, are other areas of expertise.

And, needless to say, our syllabus-deciders have managed to squeeze in some C Programming, four semesters of "engineering" mathematics which most probably covers the syllabus of B.Sc Mathematics, thermodynamics, engineering mechanics and even theory of machines. In other words, we are as equipped as any other engineering graduate, to work in non core, and sufficiently qualified to work on what mechanical engineers can do. Oh, and let me do justice to our weak side as well. We're pathetic at engineering drawing. And automotive engines. A couple of years of focusing on the Brayton cycle has cost us the memory of other automotive engine cycles, and that's about the size of it, but hey! We are people trained to optimize structural stress and aerodynamic forces - one of the most challenging aspects of engine design. How long will it take us to simply recollect some topics that we've merely lost touch with? Believe me, we've done that towards the end of each and every semester of our course, and so we've got plenty of practice.

I must admit that if it's research is what you want to do, aerospace is the field for you. Yes, we have, unfortunately been born in an era where some beautiful topics have been researched on so much that, all that can be published on them are textbooks, but there is no dearth of research topics in engineering, particularly in aerospace. And we have plenty of students taking up Master's and PhD programmes every year - and they fall under one of three broad categories, whatever their specific intentions may be: those who are, or believe they are tailor made for research, those who either didn't get jobs or seek a better job opportunity than those available to them, and those who wish to change their field of study.

That said, let's bring our discussion to the majority of the population: graduates who need to get employed.

So now comes the big question: Why don't engineering companies want us? Why don't government bodies like ISRO and DRDO want us? It might seem senseless to ask this after the previous questions,but just to complete the questionnaire: why don't PSU's like ONGC and BARC want us? I am specifically targeting these organizations, because they gladly take engineering graduates from the three golden engineering disciplines: Mechanical, Electronics and the evergreen Computer Science - grads who can simply get anything - oh did I say "evergreen" Computer Science? Yes, I did - And I meant it. No recession ever deprives these people of options. Even if it does, they have a fat bank balance, thanks to the pay offered by their dream jobs, when people from other engineering disciplines only dream of getting jobs.

I'm going to have to disappoint the reader - if they aren't already disappointed, that is - for I have no answer to the set of questions I have raised above. And nor do I believe my target organizations do. It might simply be their way of cutting down on number of job applicants, which sounds perfectly justifiable from MNCs' point of view but cruelly unjust from the point of view of government organizations. Or they may be simply unaware of our capabilities, but for how long?Aeronautical Engineering has existed in India since Madras Institute of Technology, Chennai started offering it in 1949. Anything further that I may say here will be arguably brushed aside as baseless speculation, and so I'll stop here.

It will certainly take immense financial and infrastructural effort to create tailor made opportunities for aeronautical engineers to use their full potential, not to mention the planning required and the huge risks involved, but for the time being, they can be accommodated in the roles already available. The skills I have mentioned above more than satisfy the requirement of mechanical engineering and IT roles.

We're not desperate people, we're people who deserve opportunity and haven't been given even a fraction of it.

So dear companies, please think twice before you post your "Eligibility to apply" criteria.

To colleges, I say this: Don't offer a course if you can't ensure that at least a handful of students can get placed in companies.

And, most of all, to aspiring students: Look before you leap. Know very clearly what you are walking into, and decide right. Talks of following your passion are the trend of the day. Yes, it sounds great, but if you are not practical, your heart might lead you into a ditch. And this holds good not just for India, it's a life lesson.

The reader may put me down as a self-sympathizing cynic, and I don't seek to argue, but I do wish to clarify that I speak here, not as an individual, but as a representative of every aeronautical or aerospace graduate in this country.

To companies, I ask, "Why not aerospace?" and to students, "Why aerospace?"