Chinese Hypersonic Developments (HGVs/HCMs)

ZeEa5KPul

Colonel
Registered Member
So what was the flight speed?
Here's the press release from Xiamen University (with video of the launch):
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Not a single word said about the speed. We have the dimensions and mass of the rocket, we have the altitude of flight, we have the purpose of the flight (testing the dual waverider concept). We don't have the speed.
Looks like you have some digging to do.:p
 

Hendrik_2000

Lieutenant General
Here is google translation Xiamen University was founded by Tan Kah Kee an Overseas Chinese Philanthropist from Singapore
For nine days, our school's Aerospace Academy has successfully launched the "Jia Geng No. 1" winged rocket
[print this page]
Release time: 2019-04-22Views : 4208

At 2 o'clock on the morning of April 23, 2019, after 18 hours of long-distance transition and short-term adjustment, the research team of the School of Aeronautics and Astronautics of our school officially went to the special flight test launching position of the desert unmanned area in northwestern China. At 7:28 in the morning, the "Jia Geng No. 1" rocket jointly developed by Xiamen University Aerospace Academy and Beijing Lingkong Tianxing Technology Co., Ltd. was ignited. The rocket flies throughout the atmosphere with a maximum flight altitude of 26.2km and is successfully recovered at the designated landing site. On behalf of Xiamen University, Zhang Jianlin, assistant to the principal of our school, announced the successful completion of the “Jia Geng No. 1” flight test.

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“Jia Geng No.1” is a new type of winged recyclable rocket supported by Xiamen University’s “Double First Class” major project. The total length of the rocket is 8.7m, the wingspan is 2.5m, and the takeoff quality is 3700kg. The main purpose of this joint flight test is to verify the aerodynamic performance of the double-spaced wave precursor layout proposed by the School of Aeronautics and Astronautics of Xiamen University. In this flight, the rocket transports the dual-pass wave layout to the specified altitude and speed, fully reproduces the real flight conditions and conducts aerodynamic tests, and then recovers as a whole with "winged level gliding + parachute recovery". The rocket's overall recycling, synchronous verification of a number of key technologies including ground wireless test and control, umbrella drop recovery system, low-cost electrical systems, etc., has taken an important step in the development of China's reusable rocket technology.

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The development work was tight and the task was heavy. It took only seven months from the establishment of the “double-class” school-level major project to the successful launch. The School of Aeronautics and Astronautics and Beijing Lingkong Tianxing Technology Co., Ltd. jointly established a major project team, carefully organized outstanding young teachers in various disciplines such as aviation, machinery, instrumentation, electrical, control, etc. to carry out rapid iterative demonstrations and select masters and doctoral students. The permanent design site, production workshop, assembly plant and launching site completed the development and launch of a new rocket with unprecedented speed and efficiency. “Jia Geng No.1” successfully flew. First, it gained innovation. The college effectively accumulated the experience of organizing large scientific research. Second, it tempered the team, and the team effectively expanded the ability of the project of Endeavour. The third was to strengthen the consciousness. The students enthusiastically inspired the feelings of "the air and the country".

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The Xiamen University of Aeronautics and Astronautics, which is only "4 years old", has "ambition". The College has always aimed at national strategic needs and international academic frontiers, and is planning forward-looking engineering research related to the leap-forward development of aerospace technology in the future. In June 2017, the college promoted the “civil turbine-based combined power system” as the traction development direction of the materials and intelligent manufacturing disciplines of the Faculty of Engineering. The goal of the research is to help the development of national aero-engine technology, increase the speed of civil aviation aircraft to more than five times the current speed, achieve global direct access within two hours, and completely change the world aviation structure and human transportation civilization. The successful flight of "Jia Geng No.1" and demonstration of the aerodynamic performance of the dual-pass wave layout is an important milestone for the project. It is of great significance to promote the construction of the "double-class" project of the School of Engineering of our school. It is also aerospace. The College has laid a solid foundation for undertaking more important engineering and technical projects in the future.

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The "Jiagen-1" winged rocket flight test also carried out 8 new technology verification loads and 2 scientific experimental loads developed by the School of Space Science and Technology of Xidian University, and carried out related scientific experiments.

(Aerospace Academy)
 

Hendrik_2000

Lieutenant General
They name the waverider Chen Jiageng aka Tan Kah Kee. He must be smiling in heaven now. He give every single penny of his wealth to built the university eventually bankrupt his company and leave nothing to his children. His descendant has to fend for themselves.
In the early year he trusted his best friend Lim Boon Keng a baba to run the university
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The test vehicle was named after Chen Jiageng, the business tycoon better known as Tan Kah Kee, who founded the university in Xiamen, Fujian province, in 1921.
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Chinese university becomes first in world to build and test its own hypersonic plane
  • Xiamen University’s ‘double wave rider’ makes maiden test flight in the Gobi, though the ‘game-changing’ technology is usually the sole preserve of the military
  • Academics and students have long-term plan for aircraft that could travel anywhere in the world in two hours

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Published: 12:00am, 24 Apr, 2019
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Unlike other experimental hypersonic vehicles such as Boeing's X-51 Waverider, which rides on an extremely hot layer of gas known as a “shock wave”, the Jiageng-1 rides on two layers of shock waves – one under its belly and the other in the air-inlet duct for its ramjet engine.

It was a daring design. Managing just one wave of hypersonic shocks is hard enough; using two adds additional challenges.


But the new design has some intriguing advantages: it can make the transition from supersonic to hypersonic speeds more smoothly, create more lift and allow the aircraft to travel further with less fuel.

The test vehicle was named after Chen Jiageng, the business tycoon better known as Tan Kah Kee, who founded the university in Xiamen, Fujian province, in 1921.

The Xiamen University team initially came up with the design around 2008, intriguing hypersonic researchers around the world.

After completing all the necessary computer calculations, the team brought a scaled-down model to Europe, discussed the design with hypersonic scientists there and conducted some simulation tests in one of the world's most advanced wind tunnels.

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The Jiageng-1 was named after Chen Jiageng, better known as Tan Kah Kee, the founder of the university. Photo: Xiamen University.
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Zhu said the United States was perturbed by the rapid progress of China’s hypersonic weapon programmes and had tried to restrict Chinese scientists’ access to Western researchers, but European countries such as Germany had kept their doors open.

Though hypersonic technology is mainly for military use and there are many restrictions on exchanges between European and Chinese scientists, Zhu said they believed the collaboration “will continue”.

The plane was powered by a winged rocket less than nine metres (29.5ft) tall that weighed more than three tonnes, according to a statement on the university’s website.

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It reached the height of more than 26km (16 miles) and after making some manoeuvres to “reproduce real flight conditions and conduct aerodynamic tests”, glided down and landed in the designated area with the aid of a parachute.

Some details of the test, including the distance travelled, are classified because the project was partly funded by the military, according to the team.

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The university’s launch was conducted with less secrecy than surrounds military test flights. Photo: Xiamen University.
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Chen Yong, an associate professor of physics who has been involved in a hypersonic research programme at Shanghai Jiao Tong University, said the test by Xiamen University was a landmark event.

“Conducting hypersonic study in a university is quite difficult, especially when it comes to the stage to bring the concept from laboratory to the sky,” he said.

Unlike military research institutes, university researchers usually do not have the security clearances needed for direct access to top-secret military testing facilities. Obtaining approval to conduct flights usually requires a “tremendous amount of paperwork”, he said.

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Xiamen University plans to build a hypersonic plane capable of reaching anywhere on the planet within two hours, though the team said that was a distant goal.

Michael Griffin, the Pentagon’s undersecretary for research and engineering, called hypersonic weapons a “game changer” last year.

In a statement released on the website of the US Department of Defence in December, Griffin warned that the United States could be falling behind in a new arms race.

“In the last year, China has tested more hypersonic weapons than we have in a decade. We’ve got to fix that,” Griffin said.
 
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mys_721tx

Junior Member
Registered Member
A little known company with a big ambition via LKJ 86
The space transportation company the collaborator of Xiamen University
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So Tianxing-III is more or less the reverse shuttle design, a reusable first stage and expendable second stage. For comparison,
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. If it can achieve this while carrying a reasonable sized second stage (larger than Orbital Science Pegasus), then Tianxing-III has a decent chance to become a good reusable launch vehicle.
 

Hendrik_2000

Lieutenant General
It is only proper and fitting to remember a remarkable man who make all this possible Tan Kah Kee
The SEA Chinese distinguish themselves as hard working people But even after they achieve success They never forget where they come from. And always willing to help their fellow villager. Another of their hallmark is Philanthropy and devotion to education. Mr Tan even penned the motto of Xiamen university "Always Strive for excellence" He said education is the foundation of a nation Therefore to make strong country you have to build good education system

Remarkable considering most of this men never even finish grade school and left China at very early age mostly young boy 15 to 16 year old
100 years has been passed and the tree that he planted long time ago start to bear fruit

Xiamen University the pillar of the south has the most beautiful campus in China
 

Hendrik_2000

Lieutenant General
Via Taishang
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China develops unique heat-resistant material for hypersonic aircraft

By Liu Xuanzun Source:Global Times Published: 2019/4/28 17:47:22
Chinese composite can withstand over 3,000 C for extended periods
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Pictured is an illustration of US experimental hypersonic aircraft Falcon HTV-2. Photo: IC

Chinese scientists have developed a new heat-resistant material for hypersonic aircraft which can endure over 3,000 C from friction caused by a Mach 5-20 flight within the atmosphere.

The lead scientist on the project said the material outperforms all similar foreign-made ones with its high melting point, low density and high malleability.

The new material enables a hypersonic aircraft to fly at Mach 5-20 within the atmosphere for several hours, as the high heat resulting from the friction between the aircraft and the air reaches between 2,000 C to 3,000 C, a temperature normal metal would not be able to endure.

Normal metals melt at around 1,500 C, but this new material can bear over 3,000 C for an extended period, state-owned Hunan Television reported recently.

Unlike foreign technologies that use traditional refractory metals and carbon-carbon materials, the China-made new material is a composite of ceramics and refractory metals, Fan Jinglian, the lead scientist who developed the material and a professor at Central South University in Central China's Hunan Province, told the Global Times.

The combination of ceramics and refractory metals makes the material far more efficient than foreign-made ones, and this technology is world-leading, Fan said.

In a simple analogy, Fan likened her composite to concrete cobble. "Think of the ceramics as the cobblestones, or the pellets, and the refractory metals are like the concrete. In high temperatures, the ceramics will act as pellets that pin the refractory metals, so they will not soften and deform."

As a result, the material not only has a high melting point, but also valuable characteristics such as low density and high malleability, according to the Hunan Television report.

China launched a major hypersonic aircraft project in 2009, and most Chinese scientists considered using carbon-carbon materials instead of metals back then.

Fan was questioned for her proposal to use such a material, but she insisted on making a sample, which came into being in 2012 and showed great potential.

As of March, the material has been used for products in a variety of fields including aviation, space exploration, shipbuilding and national defense, Hunan Television reported.

Hypersonic aircraft is not the only area in which materials made of ceramics and refractory metals can shine, Fan said. Any field that involves extreme high temperature, such as engines, space rockets and nuclear reactors, will have a great demand for the material, Fan noted.

China launched the Xingkong-2 waverider hypersonic flight vehicle via a rocket in a target range located in Northwest China in August 2018.

On Tuesday, East China's Xiamen University launched the Jiageng-1 hypersonic aircraft with a double-waverider design.

The test was part of the university's project to try to quintuple the current speed of civil aircraft to achieve global direct access within two hours, the Xinhua News Agency reported on Tuesday.

It is unknown whether Fan's material was used in these two cases.
 

SinoSoldier

Colonel
How is an university able to do this? Is this some form of a government research grant or like some kind of student engineering club/society (my uni has a similar one)?
 

ougoah

Brigadier
Registered Member
How is an university able to do this? Is this some form of a government research grant or like some kind of student engineering club/society (my uni has a similar one)?

Government funding. If there are strong cases made for commercial and/or military applications, there would be government support. It's another way for the scientific establishments in China to look for talent as well while getting University level students and researchers involved.

Obviously this project also seeks to promote Xiamen University and the city to Chinese. Government may have some interest in doing this.
 

vincent

Grumpy Old Man
Staff member
Moderator - World Affairs
How is an university able to do this? Is this some form of a government research grant or like some kind of student engineering club/society (my uni has a similar one)?
Never heard of the Defense Advanced Research Projects Agency, or DARPA?
 
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