'Rocketry' by Nambi Narayanan... Vinit Vartak ©
The film Rocketry, released on July 1, 2022, has brought to Indians a flashback of an international conspiracy that has faded into the pages of the past and set India back 10-15 years in rocket technology. how is the movie Critics will write about it. But on this occasion, it is very important to know the damage done to ISRO and India. His compensation cannot be in lakhs and crores of rupees. It was a ploy successfully played to pull ISRO and India back into space knowingly. The film will definitely tell more about the whole story. I don't want to go into that but what India has lost in terms of technology.
Any rocket that launches a satellite or takes humans into space has a struggle until it escapes the Earth's gravity. That's why most of the energy is spent there. For that, it has to burn a huge amount of fuel to generate power. The space required to store this fuel in the rocket, along with the weight of the fuel is also the weight of the rocket. What this means is that the fuel that produces the maximum force in the least amount is most important. To give an example, GSLV of India. The Mark 3 rocket carrying Chandrayaan 2 weighed around 690 tonnes (690,000 kg). But the Chandrayaan 2 on it weighed only 3.8 tonnes (3800 kg). What this means is that around 85% to 90% of the weight is just fuel. That is why the fuel and the same ignition engine that produce maximum power with minimum weight are required.
During 1995 India PSLV rocket had written his name in the space field by successful launch. With the success of this rocket, America and other countries started to feel pain in their stomachs. But this rocket did not have the capacity to launch an earth satellite. India had to depend on foreign countries for that and it cost India's foreign exchange. If India wants to make its rocket powerful, then it felt the need to make the most important cryogenic technology on its own. What is cryogenic? Cryogenic means the study of any object at freezing temperatures. Let's take a simple example, the cylinder used in our house contains LPG. That is (Liquefied Petroleum Gas). This one cylinder supplies us with gas last for about a month. How can one month's worth of gas remain in such a small cylinder, then the same answer is in its name. When petroleum gas is pressurized, it turns into a liquid. The same volume decreases and the gas contracts and settles in the cylinder in liquid form. On coming out again, it diffuses and supplies us in gaseous form for a month. The reason for saying all this is that these types of cylinders are used in rockets but the difference is that their temperature is reduced instead of applying pressure.
When the temperature of the gas used as fuel goes below -150°C, the gas changes from gas to liquid at such freezing temperatures. An engine that uses them as fuel in such a condition is called a cryogenic engine. In 1969, NASA was able to send a man to the moon because of this engine. Why a cryogenic engine? The answer is cryogenic engines and fuels produce more thrust per kilogram of fuel. It is much more abundant than any solid or liquid fuel and its efficiency is much higher. The lower the fuel weight, the more space you have to launch an object, satellite or other object into space. Any rocket has many stages. As GSLV There are three stages in between. It means GSLV. The engine of the first stage has to carry the fuel load of the next two stages and complete the flight from Earth orbit. If the fuel for the next two stages is too heavy, the engine in the first stage of the rocket will spend all the power in carrying their load. For that, the most important thing is 'cryogenic engine'.
In the cryogenic stage, hydrogen (LH2) and oxygen (LOX) at freezing temperatures are stored and used as fuel. Oxygen in air liquefies at -196°C while hydrogen liquefies at -253°C. Great care is required when you put both of these fuels into the rocket prior to flight and it is essential to keep the temperature below freezing until the first two stages of flight are completed. Either the energy generated by the combustion of the fuel in these two stages and the friction generated by the speed of the rocket have to be overcome to keep the temperature in these two tanks freezing. Simultaneously maintaining different freezing temperatures in two separate tanks and since both these fuels are highly flammable, it is very important to keep them separate and mix them properly and at the right time. In all adverse conditions such armor is given to both tanks. Also, igniting the same mixture at the right time and in the right amount to send the satellite into the right orbit is a very complicated and difficult engineering technology. So very few countries have been able to make such a cryogenic engine.
Nambi Narayanan was the head of ISRO's cryogenic technology in 1995. Under him, ISRO and India were rapidly developing cryogenic engine technology. According to an estimate, by 1998-2000, India would have developed cryogenic engines on its own. But Nambi Narayan and other scientists working on the project were checkmated by a major chess move. Of course, this was helped by our own outlaws for money and self-interest. ISRO and India's own cryogenic engine technology was thrown back by 10-15 years. In these 10-15 years, India would have jumped even higher in space. But unfortunately the traitors sacrificed the scientists who were taking the country to the highest position. No matter how many lakhs and crores of rupees the court gives to Nambi Narayanan today, the loss to the country will not be compensated.
Rocketry should not be watch as just a movie. We need to be aware of how the honey trap and the law are used to deceive. Nambi Narayanan is not the only one. In such a way, many Indian researchers and scientists have done this till now. Our system is the reason why India is still behind in technology. Its leaders are willing to go to any lengths for money and to break the country. Such people are clever in getting away with the law. Nambi Narayanan is the tip of the iceberg. Over the past 70 years of history, many systematic moves have been played to maintain political dominance. But we should not allow them to succeed and we should stand by our scientists, engineers and other important people and thwart the moves of these home invaders. What Nambi Narayanan went through cannot be expressed in words. His wife's reaction when he returned home from jail was, in his words,
“She turned around slowly, raised her head and stayed still, staring into my eyes. She had a strange expression as if she was watching me doing something horrible. Then she let out a shriek that I had never heard — from a human or an animal,”
A great scientist of the country like Nambi Narayanan was insulted, humiliated and treated very badly. But he did not hesitate to fight against the government system. Today he has come before the country with films like Rocketry. But what the country has lost in all this cannot be measured in words. In 2019, the Government of India duly honored him by awarding him Padma Bhushan. But the 15 years lost by India cannot be regained.
Jai Hind!!!
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