China’s Mach 30 wind tunnel could put them decades ahead in hypersonic technology

WHY THIS MATTERS IN BRIEF

The future of everything is fast – and this is the world’s fastest and most brutal wind tunnel which will let China test new hypersonic concepts.

 

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Whatever America does China wants to be two generations ahead, and recently to show that China’s die hard focus on beating the US to “create” the future President Biden and the US government passed a $200Billion R&D investment bill so that they could, in their ow words “keep up with China.” Putting this into perspective a decade ago it would have been the other way round.

 

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From prioritising the development of semiconductor and quantum technologies, some of which make US stealth obsolete, to building Z-Machines that generate more power than a collapsing White Dwarf star to simulate atomic explosions the Chinese are on a tear. And now, in their desire to be the leaders in hypersonic technology and weapons they’ve built a hypersonic wind tunnel in Beijing which “will put the superpower decades ahead of the West,” an expert says.

Researcher Han Guilai, of the Chinese Academy of Sciences, said last week that the JF-22 tunnel was capable to simulating flights at Mach 30 or 23,000mph – 30 times the speed of sound.

In an online lecture, Guilai said that together with another facility, also in Beijing, China will be “about 20 to 30 years ahead” of other powers, reports the South China Morning Post.

 

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China and countries such as the US and Russia have invested heavily in the development of hypersonic flight technology and missiles, which would make it possible for super-fast jets and weapons systems to be anywhere and hit anything anywhere in the world in two hours or less.

 

The new Hypersonic Wind Tunnel. Courtesy: Handut

 

It could also make space travel accessible to ordinary people as the hypersonic aircraft could cut costs by more than 90 per cent, reports say.

Guilai, who works with China’s hypersonic agency the Institute of Mechanics, said a jet travelling at such a speed could reach 10,000 degrees celsius and break air molecules into atoms – even giving some an electric charge.

He said: “This air is no longer the air we breathe in. The flying vehicle we study is like swimming in mud.”

 

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Wind tunnels have helped China push ahead with the technology. Instead of using mechanical compressors, Beijing uses chemical explosions to generate high speed air flow. Fuel burns in the JF-22 at speeds 100 million times faster than a regular gas stove creating shock waves similar to those experienced by jets at hypervelocity.

At America’s most advanced wind tunnel, named the LENS II, simulated flights last 30 milliseconds. In comparison, JF-22’s average flight simulation can reach 130 milliseconds, Guilai said.

He said: “Our experiment time is much longer than theirs, so the aircraft model can be larger than theirs, and the experiments can be more advanced than theirs. This determines our leading position in the world.”

 

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Qian Xuesen, who developed China’s rocket programme, coined the term “hypersonic” in 1946 after he found that the behaviour of air flow was completely different at five times faster than sound.

While no launch date has been set for China’s hypersonic aircraft, scientists at JF-22 will work together with experts say JF-12 – another wind tunnel in Beijing which has about fifth of the new facility’s power output.

Guilai said: “There is a Chinese saying, it takes 10 years to sharpen a sword. “We have spent 60 years sharpening two swords. And they are the best.”

President Xi Jinping has made modernising the armed forces a key priority and wants to have a “world class military” by 2050 capable of matching the US, so naturally China has invested a huge amount of time and money developing hypersonic missiles.

 

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It is reported to have brought its newest carrier-killing rocket fully into operation ahead of HMS Queen Elizabeth heading to the South China Sea.

The DF-17 can perform “extreme manoeuvres” as it hurtles at Mach 10 – some 7,600mph – towards a target, with any warship unlikely to survive a direct hit. The missile comprises of a rocket with flies to around 25 miles above the earth and then launches a Hypersonic Glide Vehicle (HGV) armed with a warhead at a target.

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