Tag Archives: Aerospace engineering skilling in bangalore

aerospace skilling

This is the level of our engineering graduates

How imperative is it to skill our engineers? When does skilling really start? At the post-graduate level? Graduate? School?

Let me narrate a recent incident to you, and then you can draw your own conclusions.

This is how an engineering graduate with a further six months training in embedded systems, attempted to solve a simple exercise that I had given her:

The task was to calculate digital samples for generating a sinewave. I casually suggested that she could use Excel, if she wanted. She looked quite puzzled and asked ‘How can Excel calculate the samples’? I said, ‘Can’t you give a formula’? She asked, ‘What formula?’ I said, ‘If you specify ‘x’, the computer can calculate ‘sin x’. Anyway, I said she could do it manually with a calculator also if she so wished.

She came back to me with a table written on her notebook with columns of ‘x in 1 degree increments’, ‘x in radians’, ‘sin x in decimal’, ‘Hex value in 8 bits’. She had stopped at 15 degrees since it was taking her too much time to manually calculate the entire 360 degrees. I also noticed that she had not taken the negative values of sin x. So, I asked her to calculate just one sample in the 2nd and 3rd quadrant.
She shot back, ‘Quadrant’?
I said ‘yes. Do you know what is a quadrant’?
She shook her head and sheepishly said, ‘I’ve forgotten. You mean 270 degrees?’
I asked ‘What is the first quadrant’?
‘Zero’
Without revealing any anger in my voice, I asked, ‘What is the range of the first quadrant’?
‘Zero. No, 90’
‘What is the second quadrant’?
‘180’
‘What is the third quadrant’?
‘270’
At that point I lost my patience and told her, ‘First quadrant is from 0 to 90. Can you now identify the 3rd quadrant’?
‘Yes sir. It is 180 to 270’.
Quite relieved at this huge success, I said, ‘Can you now just calculate 16 samples of a full wave and show me the result’?
She came back after 15 minutes and showed me a set of calculations that were all wrong. She had no idea what she had to do.
I thought I would go to the absolute basics and asked her ‘What is sin 30’?
She quickly whipped out her scientific calculator. I said, ‘You don’t need a calculator for that. Can you not draw a triangle and calculate’?
She stared at me as if I was out of my mind. Then she drew a vague triangle in which not even one angle was a right angle.
So, I drew one and denoted x as the ‘opposite’ and y as the hypotenuse. I said ‘Can you now calculate sin 30’?
‘But both x and y are unknown’.
I helped her by saying that ‘y’, the hypotenuse was 1. ‘Can you now calculate x’?
She quickly and triumphantly wrote ‘x= y*sin 30’!
‘I think you can calculate the value of x in relation to y, can’t you’?
An empty stare.
‘If one angle is 30 in a right-angled triangle, what would be the other?’ I asked.
’30 degrees’!
‘What is the sum of all three angles in a triangle’?
‘180. So, the other angle should be 60’.
So, I drew a mirrored triangle beneath the existing one to create the resultant equilateral triangle and asked ‘Does this shape give you any hints?’
An empty stare. So, I asked ‘Do you see any symmetry in the super triangle’?
‘Yes! If one is x, the other is (1-x)’!
I slapped my forehead and said ‘If there’s an isosceles triangle, can you guess x’?
‘It is x/2’.
With many more minutes of prodding and slapping my forehead, she arrived at ‘sin 30 = 0.5’
‘Now that you’ve managed to calculate sin 30, can you now calculate sin 45′?
She drew another triangle just like the 30 degree triangle, wrote x=0.5 and y=1 and marked the angle as ’45’.
I remarked ‘How did you mark x as 0.5′?
‘Sir, we just worked it out’!
I let it be and asked, ‘If one angle is 45 in a right angled triangle, what is the other angle’?
I was quite relieved that she did not go for her calculator. She actually blurted out ’45’ in just under 35 secs.
‘Great! If two angles are 45, can you figure out any relationship between any two sides’?
‘The base (adjacent) will be root 2’.
I said ‘If the two angles are 45, which two sides would be equal’?
Losing patience, I identified the base and the opposite sides as ‘1’. ‘Can you now calculate the hypotenuse’?
A blank stare forced me to draw dotted squares on the three sides and I asked ‘Does this picture now tell you anything’?
She shook her head. I asked ‘Have you heard of Pythagoras theorem’?
‘I have forgotten, Sir’.
Assuming that x, y & z may be more confusing than the a,b & c that we used to be taught in school, I wrote the latter.
No use.
So, I just wrote the formula c2 = a2 + b2.
Voila! ‘Root 2’ came the answer at last!!!!

‘Now that you have managed to calculate sin 30 and sin 45, can you now do sin 60’?
‘Sure’ was the very confident and proud reply.
She proceeded to draw yet another triangle that looked exactly like the first one and promptly wrote 60 in place of the 30.
She wrote ‘1’ on the hypotenuse and ‘1.5’ on the side opposite 60.
I was horrified.
‘How did you get 1.5 on that side’?
‘For a 15 degree increase from 30 to 45, that side increased from 0.5 to 1. So, for another 15 degree increase, it will increase by another 0.5’!
I thought to myself, “Absolutely brilliant logic”, but preferred to tell her calmly, ‘That’s not correct logic. If that was so, what would happen if the angle increased to 90’?

She proceeded to write two superimposed vertical lines for some distance and said, ‘It will be 2’.
‘How did you get 2? Why not 2.5’?
‘No, it can’t be 2.5’
‘But, you know what sin 90 is in reality, don’t you’?
‘Yes. 1’.
‘So, isn’t your logic wrong’?
‘Yes, Sir’.
‘So, now go back to your first triangle that you drew for sin 30. There’s something that you can see right there for 60’, I said.
She didn’t get it. So, I pointed out the 60 degree angle at the top of the triangle and asked ‘Can you write the sin 60 with reference to this angle’?
‘But that angle is in reverse. It goes beyond 180′.
I could not believe that I was listening to all this coming from an engineering graduate. Maintaining my composure, I took a deep breath.
I quickly drew another triangle as a mirror image of the 30 degree example and asked ‘Does this make any difference to the sin 30 just because the triangle is reversed’?
I was relieved when she said ‘No’.
‘So, can you now calculate sin 60 in the same triangle as the sin 30’?
‘Yes. It is 0.75’.
With anger and pain very visible on my face, I asked ‘How did you get that? Did you apply Pythagoras theorem’?
‘Oh yes. I forgot to do the squaring and rooting, Sir’!

If an engineering graduate has not understood the basics of what she studied in school, how did she not only progress through college but also get marks of over 60 and 70%? So, what’s the use of the examination system, not to talk of the class room lectures? If she does not even know the basic school-level geometry of a right angled triangle, let alone remember the name ‘Pythagoras theorem’, what science is she going to apply in life? What’s even more shocking to me is that many people tell me that 75% of the graduates are of this standard.

The question remains – If our engineering graduates do not learn how to apply basic  mathematical, engineering and science concepts to solve a problem, what do we mean by “Make in India”?

Aerospace skilling in bangalore

Why it is difficult to start a new venture in ‘Aerospace & Defence’ sector.

The original article appeared on EntrepreneurIndia.

It is not feasible for a budding entrepreneur to start a new venture in the A&D sector, for several reasons, the most important being the requirement of extensive domain knowledge & considerable work experience.

The term ‘start-up’ is a catch-phrase today. Start-ups are increasingly achieving success in every sector – be it technology, healthcare, eCommerce, services, etc. However, this is one phrase that cannot be applied to any enterprise in the A&D sector, since the long gestation period ensures that by the time the industry sees any returns, it can no more be classified as a ‘start-up’. Lack of funding, lack of trained technical manpower – right from engineers to shop floor workers, unfavourable procurement policy of government and restriction on the export of defence items etc, are some of the key challenges that discourage a new entrepreneur to step into the A&D space.

Here are four reasons highlighting the challenges faced while starting a new venture in  Aerospace and Defence:

1) Starting a new venture in A&D sector requires specialised knowledge – be it in the electronics, mechanical, hydraulic or pneumatic domain. This sector needs products with high precision, ruggedness to withstand extreme conditions, and reliability over a long period. Therefore, the enterprise should have the capability to design and manufacture these specialised products.

2) The stringent testing procedures are expensive and time consuming. The entire cycle, from understanding the RFQ and bidding, to the final testing, acceptance and receipt of payment from the defence organisation is a very long one.  The entrepreneur should be able to withstand the financial burden for a long period of time. Since it is a ‘long-gestation’ industry, finance is not as easy to obtain as in other fast-growing sectors.

3) The A&D sector is a highly demanding and specialised engineering sector. The industry needs to possess a distinct culture that lays emphasis on rigidly controlled processes, quality of output, attention to details, documentation and traceability, etc. Any industry that possesses these qualities and enjoys accepting challenges can find this sector highly rewarding and satisfying.

4) Since the A&D sector is dominantly controlled by the Government agencies, one need to be extremely patient and bear the slow decision making processes, even in cases where there is an urgent requirement.

Thus, it is not feasible for a budding entrepreneur to start a new venture in the A&D sector, as it requires extensive domain knowledge, considerable work experience and the ability to bear the financial burden for a length of time before realising any returns.

Making youth self-sufficient to take up entrepreneurship in A&D sector

In an attempt to empower fresh engineering graduates with the basic skills in design and manufacture, Raj Narayan initiated a training program named DRONA, a school of engineering practice. The program exposes fresh graduates to live projects and focuses on creating skilled engineers, especially for the Electronics and Aerospace & Defence sector. This gives them an insight into the complete design and manufacturing process of specialized defence equipment. Any engineering graduate, who opts for the DRONA training program at Radel, will be mentored by veterans of industry and well-known guest faculty.

DRONA attempts to address all the key issues associated in imparting skills to the engineers. The trainee goes through a complete transformation of the thought process, by which the critical, analytical and innovative skills blossom. At the same time, the graduate is trained in systematic quality analysis and documentation processes.

A major weakness among the engineers lies in communication skills. The Drona program provides training in written and oral communication skills, business etiquette and time management too. Drona offers courses ranging from 3-day orientation to a complete 6-month program.

Over the years, the program has transformed more than 150 such engineers. Radel has launched Drona as an initiative focusing on producing skilled engineers so that they cannot only ‘Make in India’, but ‘Create in India’, ‘Design in India’ and ‘Innovate in India’.