DRDO used a hypersonic technology demonstration vehicle to fire a missile that entered the atmosphere and achieved speeds up to Mach-6. DRDO has termed it as a major achievement in defense technology. But what is this technology, and how will it help in the defense system of the country?
What is Hypersonic Speed?
It is said to be a technology in which a missile can be released not at supersonic speed but at hypersonic speeds. According to Popular Mechanics, hypersonic in the language of science is called 'supersonic on steroids,' i.e., faster speeds than faster.
Supersonic means- faster than the speed of sound (Mach-1). And hypersonic speeds mean speeds of at least five times more than supersonic. Its speed is called Mach-5, i.e., speed of five times higher than the sound's speed. Hypersonic speed is the speed where the molecules in the air around the moving object also break down and scatter. DRDO says the vehicle that was launched first went up to 30 kilometers in the sky, and then it caught the speed of the Mach-6.
What is scramjet technology?
Before we understand this, one of newton's principles is to first know about one of the key principles. Newton's third law of motion theory says that "each action has an always and opposite reaction." This means that when the fuel is burned inside the rocket and its gas comes out, its response is a sharp push to the spruce rocket (vehicle), which increases its speed. This is called jet propulsion. In the early stages, the jet that is made is burnt by oxygen and hydrogen and has to keep the fuel inside the rocket.
In the 1960s, a technique was thought of as not to put oxygen in a rocket to burn fuel and take it from the atmosphere. This technique was called Ramjet technology. By reaching 1991, the then Soviet Union proved that oxygen at high speeds could not reach sonic speeds from the outside, but we would need scramjet technology to reach the supersonic speed. In this new technology, the rocket takes oxygen from the atmosphere and increases its speed. The advantage is that the rocket does not need to double the refueling. But this technique can only be used within the atmosphere. If the rocket is removed from the atmosphere, the technology is at risk of failure. These techniques were first used by the Soviet Union in 1991 to claim the speed of the mac.
Several years after the Soviet Union's test, the United States successfully tested the technology, after which China has successfully tested it. India has become the fourth country in the world to use scramjet technology.
Use of Scramjet technology:
This technology can be used in rockets and missiles. Three things are important in any missile -
How long the fuel burns and how long it can maintain the speed of the missile. How long can the fuel continue to burn?
How much speed the missile reaches - how strong the scramjet technology can push the missile forward. If the push was so strong that it took the missile out of the atmosphere, there would be no oxygen, and it would be useless.
Ability to hit targets-
Whether these technology missiles or rockets reach their targets properly because it can be difficult to accurately hit the target faster. It is also difficult to track at such speeds. When the missile is separated from the jet, it is important to be appropriately separated and get to the right target.
This technology will have two major advantages for India. Firstly, it will contribute a lot to the defense sector as the missile time to reach the target will be reduced. Secondly, it will be possible to save fuel when sending rockets, incredibly as long as the rocket is in the atmosphere. This will reduce the weight of the vehicle.
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