The Dhaka Times Desk It is now developing a hypersonic plane that can fly five times faster than the speed of sound. That means the aircraft will be able to fly at Mach-5 or 6,400 kilometers per hour.
Mach-1 is the speedometer number. Sound can fly at a distance of 1235 kilometers per hour. Their goal is to build a passenger plane by 2030 that will take just four hours to fly from London to Sydney! Currently it takes more than 21 hours. The flight from Los Angeles to Tokyo will take only two hours! However, most of the research on developing hypersonic aircraft is going on with the aim of developing military aircraft, not private aircraft.
James Acton is a physicist at the Carnegie Endowment for International Peace, a Washington-based research organization. In this regard, he said, the United States, Russia and China have been working on different designs for hypersonic weapons.
As research continues to develop materials that can withstand the heat generated by an airplane flying at Mach-5 speeds, scientists are also trying to develop technologies that can match it. If these calculations are matched, it will be possible to fly through the Earth's atmosphere at a speed five times faster than sound, the related scientists think.
However, the attempt to create hypersonic aircraft is not new. America developed a hypersonic rocket named X-15 in 1960. Intercontinental Missile or ICBM. When they re-enter the atmosphere from space, they have hypersonic speed.
Now world superpowers are trying to develop weapons that can fly through the atmosphere. It will no longer need to be sent into space to protect it from altitude. With this weapon it is possible to hit not only cities but also targets that can move. The 3 leading countries in hypersonic research are spending huge military allocations in this sector.
The main problem in developing hypersonic missiles is the accuracy of hitting the target. This is exactly why if China has hypersonic missiles, US aircraft carriers will have to move far away from the Chinese coast.
When a hypersonic missile is in flight, the temperature causes a plasma sheath of gas to form around the missile.
For this, the missile's communication system is also disrupted. Military communications satellites cannot control the missile, and if the target is moving, the missile can no longer track the target.
Another major problem with hypersonic missiles is their chemical modification. Due to high speed and high temperature, oxygen molecules are broken into atoms. That greatly reduces the efficiency of the missile's engine.
Nevertheless, dramatic progress is being made in hypersonic research. In 2010, the United States tested the X-51 hypersonic missile, which looked like a shark's mouth, in the Pacific Ocean, which remained hypersonic for more than 5 minutes.
The Air Force has commissioned an Atlanta-based company to test the feasibility of building a 20-passenger aircraft for the US president. The name of the US President will be associated with the lucky few who will fly at Mach-5 speed. Source: BBC
Things to do to prevent Corona virus
# stay at home all the time.
# Follow the rules and use mask when going out for emergency.
# three-layer surgical mask can be washed if desired.
# wash clothes after coming home from outside. Or hang it without shaking for at least four hours.
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# plastic PPE or eyes, mouth, head after single use
Of course it can be washed thoroughly with detergent and dried.
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# Use a head cap that completely covers the hair.
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