Chinese hypersonic research

[qwerrty]

From what I understand, the two pieces that I quote were heavily based on a recent Hypersonic Conference held in Xiamen.

Can you please give some sources?

I am too eager to read the first two articles. It would be awesome if I can some how get access to those articles.

https://www.sinodefenceforum.com/ramjet-engine-tested-by-the-chinese.t7234/page-3

 

[WarFariX]

China to Test Next-Generation Hypersonic Engine

is this even real?

 

[Cybernetics]

http://www.popsci.com/chinas-hybrid-spaceplane-could-reset-21st-century-space-race


http://www.nextbigfuture.com/2017/04/china-reveals-hypersonic-scramjet-developments-and-plans.html
China reveals hypersonic scramjet developments and plans
brian wang | April 14, 2017 |

China has revealed the first known images of an indigenous scramjet test that it says was successfully conducted at speeds up to Mach 7 and altitudes up to 30 km, in December 2015.

Credit: National Natural Science Foundation of China.

Studies of a folding-wing hypersonic boost-glide vehicle designed for deployment from a launcher at Mach 5 and 30-km altitude show dramatic changes in the center of pressure on release. Credit: China Academy of Launch Vehicle Technology

Tests of a magneto-hydrodynamic heat shield system showed performance could be boosted by seeding the flow with potassium particles. Credit: College of Aerospace Science and Engineering

Ground tests of a hydrogen-fueled continuous-rotating detonation ramjet at Mach 4.5 and simulated 18.5-km altitude indicated positive thrust was obtained. Credit: National University of Defense Technology

China will test a prototype combined-cycle hypersonic engine later this year that they hope will pave the way for the first demonstration flight of a full-scale propulsion system by 2025. If successful, the engine could be the first of its type in the world to power a hypersonic vehicle or the first stage of a two-stage-to-orbit spaceplane. Combined-cycle systems have long been studied as a potential means to access to space and long-range hypersonic vehicles.

Chinese Academy of Sciences professor Lihong Chen said: “We also developed a low cost near-space science and technology flight test platform. The first flight test was successfully carried out, and key issues of the scramjet were demonstrated at Mach 3.5-7 and at altitudes of 15-30 km [9-18 mi.].” Offering no further details, Chen says the flight test was targeted at fundamental research under a program that she likened to the Australian-U.S. Hypersonic International Flight Research Experimentation (HIFiRE) effort.

Zhang Yong, a CASTC engineer, claimed that China will master the spaceplane’s technologies in the next three to five years, and a full-scale spaceplane would then enter service by 2030.

Lihong Chen had written a Feb 2016, paper in Acta Mechanica Sinica – Engine performance analysis and optimization of a dual-mode scramjet with varied inlet conditions.

A dual-mode scramjet can operate in a wide range of flight conditions. Higher thrust can be generated by adopting suitable combustion modes. Based on the net thrust, an analysis and preliminary optimal design of a kerosene-fueled parameterized dual-mode scramjet at a crucial flight Mach number of 6 were investigated by using a modified quasi-one-dimensional method and simulated annealing strategy. Engine structure and heat release distributions, affecting the engine thrust, were chosen as analytical parameters for varied inlet conditions (isolator entrance Mach number: 1.5–3.5). Results show that different optimal heat release distributions and structural conditions can be obtained at five different inlet conditions. The highest net thrust of the parameterized dual-mode engine can be achieved by a subsonic combustion mode at an isolator entrance Mach number of 2.5. Additionally, the effects of heat release and scramjet structure on net thrust have been discussed. The present results and the developed analytical method can provide guidance for the design and optimization of high-performance dual-mode scramjets.

 

[ao333]

is this even real?

Lol, of course not. China's been testing ramjet engines for missiles. Only the US and Russia have working hypersonic jet prototypes.

 

[ao333]

So its another chinese fake. Whats new ?

Not much really. The Russians are testing their Yu-74, and the US is still struggling with its X-51.

China is the third country to test hypersonic engines, but only for their DF-ZF missiles. They have yet to test any hypersonic aircrafts. They have been testing their "BrahMos II equivalent" since 2014, but remain some distance behind Russia and US.

 

[Ultima Thule]

Lol, of course not. China's been testing ramjet engines for missiles. Only the US and Russia have working hypersonic jet prototypes.

why not? if India does research jointly with Russia on ramjet and scram-jet, China is far more advance than India in the research field in ramjet, scram-jet and hyper-sonic vehicle, give me the valid reason why China can't develop ramjet, scram-jet and hyper-sonic vehicle?

 

[ao333]

why not? if India does research jointly with Russia on ramjet and scram-jet, China is far more advance than India in the research field in ramjet, scram-jet and hyper-sonic vehicle, give me the valid reason why China can't develop ramjet, scram-jet and hyper-sonic vehicle?

The comparison was between Russia/US and China, not India and China. India cannot produce supersonic ramjet engines, let alone hypersonic ones. The BrahMos and BrahMos II has been and will be using Russian ramjets. In terms of cruise missile engine technology, China is a distant 3rd after US/Russia and India is a distant 7th, after the UN P5 and Israel.

Can China develop ramjet aircrafts? Perhaps, but it won't be easy. The Chinese do not have the material technology to accomplish such a feat, yet.

 

[Shotgunner51]

A look at China's most exciting hypersonic aerospace programs
The latest scramjets, near-space planes, and super wind tunnels.
By Jeffrey Lin and P.W. Singer April 19, 2017

Hypersonic technology has the potential to revolutionize both military and civilian aerospace, so it's no surprise that China is showing off its program. At the 21st International Space Plane and Hypersonic Systems and Technology in Xiamen — a global forum of scientists and engineers researching hypersonic concepts and technologies — Chinese scientists provided key details on several little-known but game-changing scramjets, near-space planes, and super wind tunnels.

China's Scramjet
This December 2015 scramjet test flight is the first public-source picture of China's scramjet program, which set a high speed of Mach 7. (National Natural Science Foundation of China)

First, let's talk about scramjets. These have air-breathing engines (like turbofans and piston engines), so they don't need to carry a supply of oxidizer to combust their fuel. This makes them lighter and more efficient than rocket propelled missiles, as well as being more maneuverable. The first open source image of a Chinese scramjet test emerged in December 2015. It flew to an altitude of 30 kilometers (over 18 miles), and reached a Mach 7 speed. Interestingly, while American scramjet tests have generally been air dropped before firing their rocket boosters, the Chinese scramjet test was boosted from a land-based launcher. Scramjets could enable more efficient and easier forms of space launch and hypersonic airliners, just as they could be used for high-speed cruise missiles to replace ballistic missiles.​

TRRE
The turbo-aided rocket-augmented ram/scramjet engine (TRRE), which uses rocket augmentation in order to aid in the transition into the supersonic and hypersonic flight regimes, could be the world's first combined cycle engine to fly in 2025, paving the way for hypersonic near space planes and single-stage space launchers. (Beijing Power Machinery Research Institute)

A hypersonic plane can fly in the "near-space" altitude of 12 miles to 60 miles, allowing it to shoot into orbit with integrated rockets, or fly civilian and military missions in near space. Such a hypersonic plane could circumnavigate the world in a couple hours, out of the reach of conventional air defenses. China has several programs researching hypersonic combined cycle engines, which consist of a turbofan stage for subsonic/low supersonic flight, and a ramjet stage for the transition from supersonic to hypersonic flight.​

The most promising program is Beijing Power Machinery Research Institute's turbo-aided rocket-augmented ram/scramjet combined cycle (a mouthful often abbreviated to TRRE; Turbo-aided Rocket-augmented Ram/Scramjet Engine), which uses integrated liquid-fueled rockets to boost the performance of the turbine and ramjet stages, thus making a safer and smoother transition from supersonic to hypersonic flight of Mach 10. With key components like the engine inlet, cooling, and combustion already developed, ground tests of the system are beginning later this year. The reported plan is for a full-scale TRRE testbed to begin flights by 2025, with a 2030 test flight.​

FD-21
The FD-21, a 556-foot-long wind tunnel, was finished in 2016 by the China Academy of Aerospace Aerodynamics, who will turn it on later this year. Reaching speeds of Mach 10-15, it's also large enough to test full-sized components of hypersonic propulsion, like gliders and scramjets (China Academy of Aerospace Aerodynamics)

And then there are the hypersonic wind tunnels. China has the world's largest hypersonic wind tunnel, the detonation drive JF-12, and is working to build an even larger one. The 556-foot-long FD-21 hypersonic shock tunnel can reach speeds of Mach 10-15, well above the JF-12's Mach 5-9 range. Clearly, China is not content to restrict its flight research to the lower end of the hypersonic speed range.​

The Future? Chinese scramjets, as part of combined cycle engines, could allow China to fly Mach 6 airplanes, anywhere in the world in under three hours, at speeds and altitudes impervious to modern air defenses. It is highly likely that due to the nature of material sciences and laws of physics, hypersonic aircraft like the American SR-72 and its Chinese counterparts would look similar to each other (like how most modern attack submarines share the same general hull shape).

At the Xiamen event, Chinese engineers also reported on a wide range of other hypersonic technologies, such as plasma jets to steer hypersonic thrust, advanced heat resistant composites, and new fuels. The event was yet another indication that, with well established programs in spaceplanes and scramjets, China is set for a hypersonic flight boom.

http://www.popsci.com/chinas-hypersonic-technology



China to Test Next-Generation Hypersonic Engine

 

[WarFariX]

China has successfully tested its solid-fuel variable flow ramjet engine in two recent airspace experiments, a breakthrough in the engine research fields which could enhance real combat ability of China's stealth aircraft including the J20 jet fighters, according to a research team from No. 4 research institute affiliated with the China Aerospace Science and Technology Corporation

A research team from No. 4 research institute affiliated with the China Aerospace Science and Technology Corporation revealed on May 31 that the team has successfully conducted two flight tests with the solid-fuel variable flow ramjet engine. The team said the new ramjet engine is ready for further engineering application, paving the way for China's next generations of hypersonic missiles, the Science and Technology Daily reported on Thursday.

According to the report, the solid-fuel ramjet engine is a member of the ramjet engine family, which has the advantage of low cost, high power, and high controllability with compact size. And it is hardly accessible in the world as it demands sophisticated and highly difficult research on technology.

The new engine, can remarkably increase the firing range and mobility for air-to-air missiles and antiship missiles equipped with China's stealth aircraft including the J20 jet fighters, Song Zhongping, a military expert who used to serve in the PLA Rocket Force, told the Global Times.

The engine will enable the J20 fighters to fire from greater range and the missiles to fly faster at a hypersonic speed, which will increase their combat ability, Song said.

The research institute has established a special research team to work on the project since 2000, and in recent years, the research institute has conducted eight flight tests with the new ramjet engines.

It is a milestone in the field of engine research, which has been a bottleneck for China for quite a while, Li Jie, a Beijing-based military expert, told the Global Times on Monday.

Once the engine achieves miniaturization, it will very likely enable China's air-to-air missiles to strike targets up to 300 kilometers at a speed faster than Mach 5, Song estimated, adding that the engine can be applied to China's latest missiles including PL12 missiles.

A lot of research needs to be done in the future to achieve that. For example, China should also conduct research on building up a super range detection network to support such a long-range strike, and the precision guiding system should be capable of processing information at super high speeds, Wang Ya'nan, chief editor of the Aerospace Knowledge magazine, told the Global Times.

At present, such an engine will be mainly used on missiles, as for the manned aircraft, there is still a long way to go, since the thrust of such engines are still not enough for that, Song said.

Cruise missiles and experimental aircraft including drones can also adopt such technology to realize high-speed travel within the atmosphere, Wang added.

 

[WarFariX]

@Deino @Bilal Khan (Quwa) @Oscar progressing at high rate. Making full use of their R&D. Something like this will truly reshape the aerial combat especially BVR

 

[Mrc]

Excellent

 

[I S I]

Congratulations.

 

[Shotgunner51]

View attachment 402401 China has successfully tested its solid-fuel variable flow ramjet engine in two recent airspace experiments, a breakthrough in the engine research fields which could enhance real combat ability of China's stealth aircraft including the J20 jet fighters, according to a research team from No. 4 research institute affiliated with the China Aerospace Science and Technology Corporation

A research team from No. 4 research institute affiliated with the China Aerospace Science and Technology Corporation revealed on May 31 that the team has successfully conducted two flight tests with the solid-fuel variable flow ramjet engine. The team said the new ramjet engine is ready for further engineering application, paving the way for China's next generations of hypersonic missiles, the Science and Technology Daily reported on Thursday.

According to the report, the solid-fuel ramjet engine is a member of the ramjet engine family, which has the advantage of low cost, high power, and high controllability with compact size. And it is hardly accessible in the world as it demands sophisticated and highly difficult research on technology.

The new engine, can remarkably increase the firing range and mobility for air-to-air missiles and antiship missiles equipped with China's stealth aircraft including the J20 jet fighters, Song Zhongping, a military expert who used to serve in the PLA Rocket Force, told the Global Times.

The engine will enable the J20 fighters to fire from greater range and the missiles to fly faster at a hypersonic speed, which will increase their combat ability, Song said.

The research institute has established a special research team to work on the project since 2000, and in recent years, the research institute has conducted eight flight tests with the new ramjet engines.

It is a milestone in the field of engine research, which has been a bottleneck for China for quite a while, Li Jie, a Beijing-based military expert, told the Global Times on Monday.

Once the engine achieves miniaturization, it will very likely enable China's air-to-air missiles to strike targets up to 300 kilometers at a speed faster than Mach 5, Song estimated, adding that the engine can be applied to China's latest missiles including PL12 missiles.

A lot of research needs to be done in the future to achieve that. For example, China should also conduct research on building up a super range detection network to support such a long-range strike, and the precision guiding system should be capable of processing information at super high speeds, Wang Ya'nan, chief editor of the Aerospace Knowledge magazine, told the Global Times.

At present, such an engine will be mainly used on missiles, as for the manned aircraft, there is still a long way to go, since the thrust of such engines are still not enough for that, Song said.

Cruise missiles and experimental aircraft including drones can also adopt such technology to realize high-speed travel within the atmosphere, Wang added.

Thanks for posting, do you have the source link?

 

[WarFariX]

Thanks for posting, do you have the source link?

Yep
http://www.airrecognition.com/index...ly-tests-new-variable-flow-ramjet-engine.html

 

[Shotgunner51]

Yep
http://www.airrecognition.com/index...ly-tests-new-variable-flow-ramjet-engine.html

Just checked the link, they source from link below. That helps me other others to trace the news, thanks by the way!
http://www.globaltimes.cn/content/1050098.shtml