Aotian-1, a Chinese hypersonic reentry demonstrator flown tested on 20/09/2013?

antigravite

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Hi,

Though I'm not sure this is the appropriate thread, while being relevant, I found that on May 8, 2010 a prospective "model" of what an hypothetical future chinese space shuttle (phraseology tinted with a grain of salt) could look like was exhibited in Shanghai. This was during the World Fair. This maybe crap, and surely is. But rather than trashing this piece of information out, I am including this material herein, together with the source as it may later inspire someone or ring a bell.

A.

Source: Guorong Gu, China News Network, 08/05/2010, http://www.anhuinews.com/zhuyeguanli/system/2010/05/08/002898627.shtml
 

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antigravite

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Patent list updated. Check back this thread's post (used a an information repository) dated November, 3.
Hope this helps.

A.
 

antigravite

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Bowen Bai (School of Electronics & Mechanical Engineering, Xidian University, Xi'an, China) ; Xiaoping Li ; Yanming Liu ; Lei Shi, “Analysis of GPS patch antenna covered by re-entry plasma sheath”, Proceedings of the 2012 10th International Symposium on Antennas, Propagation & EM Theory (ISAPE) held 22-26 Oct. 2012 in X’ian (China), pp.257–260

Abstract: A plasma sheath enveloping a reentry vehicle would affect on-board antennas performances greatly, especially the navigation antennas. This paper studies the effects of plasma sheath on a GPS microstrip patch antenna during a typical reentry phase. Utilizing the algorithm of time-domain finite integration, the radiation and admittance characteristics of the GPS antenna coated by plasma sheath are obtained. The changes in antenna characteristics are analyzed and the process of a reentry blackout is also reproduced from the respect of the antenna performance degradations.

:-*

A.
 

antigravite

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Hi, the article below is related to this current topic.

Emphasis (bold) are mine. I'd be grateful to anybody willing to fact check, and offer a careful and balanced view, related to this top-secret-military-test-interpreted-as-a-UFO information.

Be kind. Enjoy.

A.

BEWARE: FACT CHECK THE INFORMATION BELOW. CAN IT BE CONFIRMED IN ANY MANNER FROM/WITH OTHER SOURCES (weibo, if it's not censored yet, etc.)



"China Developing Secret 'Space Bomber': Duowei"


China is allegedly developing a secret "space bomber" to compete with America's Boeing X-37 reusable unmanned spacecraft, reports Duowei News, an outlet run by overseas Chinese.
Sources say people who reported UFO sightings on March 13 in the Chinese cities of Chongqing, Kunming, Chengdu, Wuhan, Changsha, Zhaoqing and Haikou actually saw a top secret rocket being tested by the government. This coincides with an announcement on the website of China's National Space Science Center the same evening which declared that scientists had successfully conducted a high-altitude scientific exploration test.
Various reports claim that China upped its space program following the successful launch of the US X-37B reusable unmanned spacecraft in December last year. Sources say China has been developing a mysterious space shuttle codenamed "Shenlong," meaning "Divine Dragon" in Chinese, a stealth space bomber that will significantly boost the country's space warfare capabilities.
Chinese military websites began "leaking" alleged photos of the Shenlong project in 2007, with a spacecraft appearing to be suspended from a Xian H-6 strategic bomber. In January 2011, a television station in northwest China's Shaanxi province reported the successful test of an aerosphere vehicle. However, precise details of the Shenlong have remained secret, with most online reports about the project deleted by censors.
Last June, media in central China's Hubei province said that the Shenlong is similar in purpose to the X-37B in that it is an unmanned spacecraft, and claimed that the country's scientists have achieved four major technological breakthroughs on the project in the last two years.
Speculation from alleged photos puts the Shenlong's size at around 1m high and 5m-6m in length, which would make it roughly a third the size of the X-37B. Others sources have estimated the Shenlong at around 1.1m high, 12m long and 4m wide.
According to speculative reports, the Shenlong is designed to be launched at 10,000m in the air from a Xian H-6 jet. The first phase engine will boost the 13-tonne Shenlong up to an altitude of 490 km within eight minutes, while the second phase will take it to height of 600 km. In the third phase, a 50 kilogram satellite will be launched into orbit before eventually descending back to Earth.

source: [Staff Report], "China Developing Secret Space Bomber", Wantchinatimes, 17/05/2013, http://www.wantchinatimes.com/news-subclass-cnt.aspx?id=20130517000108&cid=1101
 

antigravite

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antigravite said:
antigravite said:
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The 2009 conference background poster
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taken on November, 14th 2009
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... shows interesting details on he projection screens.

For what it's worth, and a question.
  • What we see is definitely not the Shenlong space plane (神龙”空天飞机) and does not match anything I know of.
  • The wing-body spaceplane is represented flying in space, with an attitude which could be interpreted as pre-rentry.
  • This raises a couple of legitimate questions: (1) is it a yet unidentified Chinese shuttle project/study/etc. and in that case, how well is it documented in the technical literature? (2) if not, it is another country's CGI image/artwork used/adapted here for "background" presentation and (gap filler) illustration only. In that case, what is the reference?
  • Hypothesis #1: This image may come from an animation movie. Can this hypothesis be verified? What is the dropdown menu used for? Launching the PPT (or its local equivalent) or a movie
  • Hypothesis #2: This image seems to be used as the opening slide of a plenary lecture. Can this hypothesis be verified?
  • As to what it being shown, I feel pretty comfident it's not an Indian shuttle project. Could it be Japanese? Russian? US? European?Very old? Brand "new" (well in late 2009)?
Come on guys and girlies, don't be shy... Does this image look familliar or ring any kinda bell? What is the closest equivalent you know of?

A.
 

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Desert Dawn

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This is not to keep you from doing your research, but was only meant to say that as have been typical with the Chinese miltary aerospace programs, we will only know for sure and see the picture of what it was that was flown when they will decide to 'leak' it with one of their unofficial leakers, probably when a US Secretary of State or other dignitary will be paying them a visit, just to show off. Other than that, we are just seeing a lot of preliminary projects, illustrations showing proposals that will not look like the final vehicle if any, this all makes me think of the myriads drawings, illustrations and CG art we see from US aerospace manufacturers since decades about so many spaceplane projects. If the USAF indeed built a secret US space shuttle, we never saw it, and we may never see it until they decide to show it or long after it's been retired. Until then, we've got the not so classified X-37 B robot. The same way, none of the pictures shown here would be likely to show a classified Chinese space bomber the same way none of the drawings or photos we saw prior to the revelation of the J-20 were showing what the J-20 really looked like. If they had one they would not show it, even on the Chinese web. Too easy to see.
 

antigravite

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Hi guys...
Story becomes weirder. Enter [Input~2] and [Galactic Pingin SST] on the scene on other forums.
Super great info and debates.
antigravite said:
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Sources say people who reported UFO sightings on March 13 in the Chinese cities of Chongqing, Kunming, Chengdu, Wuhan, Changsha, Zhaoqing and Haikou actually saw a top secret rocket being tested by the government. This coincides with an announcement on the website of China's National Space Science Center the same evening which declared that scientists had successfully conducted a high-altitude scientific exploration test.
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Below is an extensive cut and paste of nasa.spaceflight forum thread dated May 13, 2013 available from here:
http://forum.nasaspaceflight.com/index.php?topic=31898.5;wap2

TO MODERATOR: I HOPE I CAN DO THAT FOR THE SAKE OF INFORMATION ARCHIVAL.


Galactic Penguin SST:
--- Quote from: input~2 on 05/12/2013 12:34 PM ---It's back, now on May 13

--- Quote ---A0523/13 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N272440E1062527-N270348E1061854 -N271521E1053214-N273614E1053838 BACK TO START. VERTICAL LIMITS: SFC-UNL.ALL ACFT ARE PROHIBITED TO FLY INTO THE AREA. SFC - UNL, 13 MAY 12:47 2013 UNTIL 13 MAY 13:36 2013. CREATED: 12 MAY 11:34 2013
--- End quote ---

--- End quote ---

People being chased off their houses right now.....

It would be absolutely weird if a missile launch would require evacuating towns and villages in several different spots, but I have no explanation on what on earth is that thing being launched right now (doubt it's aimed towards orbit though).

Expect UFO reports soon..... ::)

Galactic Penguin SST:

--- Quote from: Galactic Penguin SST on 05/13/2013 12:31 PM ---
--- Quote from: input~2 on 05/12/2013 12:34 PM ---It's back, now on May 13

--- Quote ---A0523/13 - A TEMPORARY RESTRICTED AREA ESTABLISHED BOUNDED BY: N272440E1062527-N270348E1061854 -N271521E1053214-N273614E1053838 BACK TO START. VERTICAL LIMITS: SFC-UNL.ALL ACFT ARE PROHIBITED TO FLY INTO THE AREA. SFC - UNL, 13 MAY 12:47 2013 UNTIL 13 MAY 13:36 2013. CREATED: 12 MAY 11:34 2013
--- End quote ---

--- End quote ---

People being chased off their houses right now.....

It would be absolutely weird if a missile launch would require evacuating towns and villages in several different spots, but I have no explanation on what on earth is that thing being launched right now (doubt it's aimed towards orbit though).

Expect UFO reports soon..... ::)

--- End quote ---

Launched around 13:00 UTC - lots of observation reports ranging from Chengdu to Kunming, as well as UFOs from Chongqing all the way to Wuhan and Hainan island! ::) :eek:

Edit: Even more reports from places further downstream - including one in Fujian and at least 3 in Guangdong. Damn! I should have get out and look around if I can see the "purple comet tail" from Hong Kong....

]Satori:

--- Quote from: Galactic Penguin SST on 05/13/2013 01:05 PM ---
Launched around 13:00 UTC - lots of observation reports ranging from Chengdu to Kunming, as well as UFOs from Chongqing all the way to Wuhan and Hainan island! ::) :eek:

Edit: Even more reports from places further downstream - including one in Fujian and at least 3 in Guangdong. Damn! I should have get out and look around if I can see the "purple comet tail" from Hong Kong....

--- End quote ---

This is getting really interesting!!!

Satori:
Any other informations about this launch?

input~2:

--- Quote from: Galactic Penguin SST on 05/13/2013 01:05 PM ---Launched around 13:00 UTC - lots of observation reports ranging from Chengdu to Kunming, as well as UFOs from Chongqing all the way to Wuhan and Hainan island! ::) :eek:

Edit: Even more reports from places further downstream - including one in Fujian and at least 3 in Guangdong. Damn! I should have get out and look around if I can see the "purple comet tail" from Hong Kong....

--- End quote ---
I've seen reports from microbloggers located in Xichang, Xishuangbanna (Yunnan) and Shiyan (Hubei)
 

antigravite

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Just found that [Elixir] / [Henri Kehnmann] news agency posted last september an intriguing CCTV13 video dealing with the future man-rated CZ-5 / CZ-7 launcher. The payload is a bit strange strange, and since I don't speak Chinese, understanding a little more goes beyond my reach.

A.

PS) source video:
https://www.youtube.com/watch?v=2UPFfbPsasI&feature=player_embedded#at=44


PS) Added after posting. The video segment discusses both CVZ-5 and CZ-7.
 

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antigravite

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Hi,

Here are some more contextual information for would-be fact-checkers:

(1) DATE / WEATHER

(1.1) DAY DATE
Aotian-1 alleged flight test supposedly happened on September 20, 2013 in the Hulun Buir region.
This was a Friday.

(1.2) DAYLENGTH
As to the Hulun Buir region, we can get local weather information associated with Hulun Buir's Hailar airport:
sunrise @ 05:45 local time
sunset @ 18:03 local time
day length: 12:18

source: http://www.sunrise-and-sunset.com/en/china/hailar/2013/september

These pieces of information may be useful and helpful to match against pictures posted on weibo as some of these pictures showed either sunrise or sunset.

(1.3) WEATHER INFORMATION

Daily average temperature records @ Hailar are:
Average low: 2°C
Average low: 16°C

source: intellicast.com

(2) AIRPLANE COMPANIES CURRENTLY OPERATING IN "INNER MONTGOLIA" FROM 9 AIRPORTS

Inner mongolia airports listed below (City name, ICAO - IATA - Airport name):

  • Baotou - ZBOW - BAV - Baotou Airport
  • Chifeng - ZBCF - CIF - Chifeng Airport
  • Hailar - ZBLA - HLD - Hailar Dongshan Airport
  • Hohhot - ZBHH - HET - Hohhot Baita International Airport
  • Manjur - NZH - Manzhouli Airport
  • Tongliao - ZBTL- TGO - Tongliao Airport
  • Ulanhot - ZBUL - HLH - Ulanhot Airport
  • Wuhai - WUA - Wuhai Airport
  • Xilin Hot- ZBXH - XIL- Xilinhot Airport
source #1: http://de.wikipedia.org/wiki/Liste_der_Flughäfen_in_der_Volksrepublik_China
source #2: http://www.cctsbeijing.com/china-flights/airports/inner-mongolia/

(3) AIRLINE FLIGHT STATUS CHECKING SERVICES

Typical example of real-time flight status checking services (applicable to Hailar- HLD):
http://www.flightstats.com/go/FlightStatus/flightStatusByAirport.do?airportCode=HLD&airportQueryType=1

A.
 

antigravite

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Hi,

From a programmatic standpoint, most funds are channelled through both 863/super-863 and 973 projects.
Scholars could look into that.

Actually, quite a few 863 and super-863 [technology push] projects can be traced back to reusable aerospace technologies development.
Specifically, 863-70x series. 863-706 of course, but not only. 863-702 has been connected to RLV (TSTO) studies.

One among many interesting blog articles (largely cut and pasted on many various blogs) worth of interest is:
http://blog.renren.com/share/283319025/1844697075

There's a whole website about project 863 description and funding.

863 discussed on wikipedia:
http://en.wikipedia.org/wiki/863_Program

863, as described by the Chinese Ministry of Science & Technology:
http://www.most.gov.cn/eng/programmes1/200610/t20061009_36225.htm

973 project (basic research) as described by Chinese authorities:
http://www.973.gov.cn/English/Index.aspxA.

A.
 

Deino

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;) ;)

http://lt.cjdby.net/thread-1769854-1-1.html

Deino
 

antigravite

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antigravite said:
Inner mongolia airports listed below (City name, ICAO - IATA - Airport name):

  • Baotou - ZBOW - BAV - Baotou Airport
  • Chifeng - ZBCF - CIF - Chifeng Airport
  • Hailar - ZBLA - HLD - Hailar Dongshan Airport
  • Hohhot - ZBHH - HET - Hohhot Baita International Airport
  • Manjur - NZH - Manzhouli Airport
  • Tongliao - ZBTL- TGO - Tongliao Airport
  • Ulanhot - ZBUL - HLH - Ulanhot Airport
  • Wuhai - WUA - Wuhai Airport
  • Xilin Hot- ZBXH - XIL- Xilinhot Airport
source #1: http://de.wikipedia.org/wiki/Liste_der_Flughäfen_in_der_Volksrepublik_China
source #2: http://www.cctsbeijing.com/china-flights/airports/inner-mongolia/
Another interesting link, Cryptome's "Eyeball series" applied to Chinese airports!
http://cryptome.org/eyeball/cn-bases/cn-bases.htm

A.
 

antigravite

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sferrin said:
JFC Fuller said:
quellish said:
jjnodice said:
Article on Chinese hypersonics test:

http://freebeacon.com/china-conducts-first-test-of-new-ultra-high-speed-missile-vehicle/

Perhaps we should rename the thread to: Gates, "They have prompt global strike...."
It's a MARV. Only about 50 years behind the US, and 40(?) behind Russia.
The question is whether it is powered (as the Russians have reportedly been working on), or whether it was "simply" a MARV.
Also, there is a huge difference between a Pershing II-type MARV and a boost-glide type vehicle, which this appears to be.
Yes indeed, Chinese hypersonics is in a very good shape.
And Project 2049's Mark Stokes may heavily downplay the extent of currently ongoing efforts.
Technical literature related to all aspects of this advanced weaponry (GNC, HTC, trajectory shaping, computation, etc.) clearly highlights that more projects are going on, full throttle up including various types of RLVs, and conventional and advanced high-speed airbreathing strategic platforms.

A.
 

sferrin

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Deino said:
;) ;)

http://lt.cjdby.net/thread-1769854-1-1.html

Deino
Is this fan art or an X-37 clone?
 

antigravite

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sferrin said:
Deino said:
Is this fan art or an X-37 clone?
No idea yet but a question worth asking. This series of images posted on the Chinese blog, exhibits an introductory caption reading among others 神龙2.0 空天飞机CG which goggletranslates as "Shenlong 2.0 space plane CG". CG stands for "computer graphics". It looks like fan art but tastes like a real project. That's very confusing.
It puzzles me too. BTW, I find it hard to believe this "Shenlong 2.0" or orbital Sheniong, is Aotian-1 because it doesn't look like a Bor-4, or -- for those not familiar yet with this seminal Soviet-era project --, today's "Dream Chaser" (based on my understanding of what is going on in the field of hypersonics in China, as there are several projects going on).

A.
 

Deino

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China Confirms Hypersonic Missile Carrier Test
http://www.voanews.com/content/reu-china-confirms-hypersonic-missile-carrier-test/1830606.html
Reuters

January 15, 2014
BEIJING — China has flight-tested a hypersonic missile delivery vehicle in a move that was scientific in nature and not targeted at any country, the Defense Ministry said on Monday.

A Chinese military build-up has raised regional jitters. Many countries in Asia have welcomed a stated U.S. intention to shift more attention and military assets back to the region. They are beefing up military spending and ties with Washington.

“Our planned scientific research tests conducted in our territory are normal,” China’s Defense Ministry said in a faxed response to Reuters. “These tests are not targeted at any country and at any specific goals.”

The statement confirmed a report by the online Washington Free Beacon newspaper that the hypersonic glide vehicle (HGV) was detected flying at 10 times the speed of sound over China last week. A spokesman for the U.S. Defense Department told the newspaper it was aware of the test.

The Free Beacon said the test made China the second country after the United States to have successfully tested a hypersonic delivery vehicle able to carry nuclear warheads at a speed above Mach 10 - or 12,359 kilometers per hour.

Three decades of double-digit, annual increases in military spending have accelerated Beijing's ambitious build-up and allowed Chinese defense factories to boost the quality and performance of home-grown weapons and military hardware.
 

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"House GOP Defense Heavies Slam China After Hypersonic Missile Test"
by Colin Clark on January 14, 2014 at 9:30 PM

Source:
http://breakingdefense.com/2014/01/house-gop-defense-heavies-slam-china-after-hypersonic-missile-test/

CAPITOL HILL: Sometimes it can seem as if one lives on several different planets at the same time while living here in Washington. This afternoon saw three top GOP lawmakers decrying China after it apparently tested (we don’t know if the test was successful) a hypersonic vehicle. This evening, the Navy announced it is beefing up the number of carriers stationed in the Pacific, moving the USS Theodore Roosevelt from its current berth at Norfolk to San Diego.

And the Chief of Naval Operations told the Surface Navy Association’s annual conference late this afternoon that the kerfuffle between the Chinese aircraft carrier’s escorts and the USS Cowpens “quieted down very quickly” once the carrier’s senior captain communicated directly with his colleague on the Cowpens. The CNO cast this as an excellent example of how well-understood protocols could help both sides avoid crises. It’s been previously noted that the captain of the Liaoning visited the Pentagon last September.

But on Capitol Hill, the portrayal of China was not nearly as positive. Three GOP members of the House Armed Services Committee, including chairman Buck McKeon, sounded the alarm.

The Chinese “appear to be leaping ahead of us” with the test of a hypersonic missile, said Reps. McKeon, Randy Forbes and Mike Rogers. “The Asia Pacific is fast becoming a powder keg. Allowing nations that do not share our respect for free and open avenues of commerce to gain a strategic advantage over the United States and her allies only brings us closer to lighting the fuse.”

I spoke with a former senior intelligence official who is familiar with hypersonic technologies to get some idea of the significance of the Chinese test. In military terms, this “isn’t very significant,” if it’s a gliding vehicle powered to hypersonic speed by a rocket, which appears to be the case, the former official said. The truly worrying advance would come if China had demonstrated the ability to fly a powered vehicle at hypersonic speeds that was able to engage in controlled flight. The United States has worked on hypersonic technologies for years, most recently on Boeing’s X-51, which is a scramjet. The X-51 flew faster than Mach 5 (which defines hypersonic) for 210 seconds in May last year.

There have been persistent reports that China’s so-called carrier-killer missile, the DF-21, is hypersonic. But it’s more likely a medium-range ballistic missile with an independently-guided warhead that does not fly faster than Mach 5.

Here’s the complex dance of the carriers as chronicled by the Navy News Service: “The U.S. Navy announced today that the aircraft carrier USS Ronald Reagan (CVN 76) will replace USS George Washington (CVN 73) in Japan and become part of the U.S. 7th Fleet forward-deployed naval forces (FDNF) in Yokosuka, Japan. As part of the rebalance strategy to increase the Navy’s presence in the Pacific Fleet, USS Theodore Roosevelt (CVN 71) will move from Norfolk, Va., to San Diego.

“Theodore Roosevelt will serve as a U.S. 3rd Fleet rotational carrier allowing Ronald Reagan to depart her current homeport in San Diego and proceed to Yokosuka. George Washington will depart Japan and proceed to Virginia in preparation for its mid-life refueling complex overhaul at Newport News Shipbuilding, Huntington Ingalls Industries.”
 

antigravite

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KJ_Lesnick said:
antigravite said:
Yes indeed, Chinese hypersonics is in a very good shape.
Do you think this is a serious threat to the US?
Yes of course as is the case when a new competitor shows up in the courtyard with a toy you were supposedly the only one in town, to own. Reminder: China invented gunpowder, had some practice in the art of tillery (pun intended), but they did not invent the gun nor the rifle. I should check back Needham on that, but this is what I remember from reading it a long time ago. This lack of engineering skills in an ever competing word (Europe) had dramatic consequences in the mid 19th century when europeans showed up. The Opium War is something every one should understand here, even if this is past. You just can't beat with knives and arrows a small army of gunmen, that's impossible, it does not make any sense. Chinese people learned this elementary lesson to avoid being caught by surprise in a similar situation, if anything "bad" happens. The problem reads differently today and becomes: when Vulcan's works give rise to infatuation and the feeling of limitless power, what do people do? I'm usually very positive but the future is not bright, quite the opposite. Very cloudy. Very dark. I don't understand everything but it's like everybody was currently, patiently paving the road to Hell. Everybody.

A.
 

antigravite

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Hi.

New stuff? New stuff, definitely. Please read and help [Chinese-speaking anyone].

On 19/02/2014, [Sinosoldier] a junior member of sinodefenceforum.com, posted there [section: strategic-defense; subsection thread: China's space program news and views], what appears to be a [dead] backlink from where a couple of pictured text documents, originating from two different sources, are reposted for information. These chinese pictured documents are sanitized and edited for comments. These documents are seemingly associated with a "new type of space vehicle". The post reads that a '"new type of space craft has finished autonomous approach and landing tests".

unverified source [published 22/01/2014]: http://www.zznews.cn/news/system/2014/01/22/010230573.shtml
square one forum post [dated 19/02/2014]: http://www.sinodefenceforum.com/strategic-defense/chinas-space-program-news-views-184-1143.html

The only "known" chinese space craft recently discussed here around that could be able to perform / complete ALTs and thus match the succinct description, is a winged like vehicle such as, but not limited to, Aotian-1. If this is really it, things are going to move pretty fast.

So, here's a wrap up.

  • A new type of space vehicle is under development in China (this is not really a big surprise).
  • This new type of space vehicle is managed by CASC, not handled by CALT which has many consequences.
  • This new type of vehicle might be connected to Aotian-1 classified flight test, which happened in late september 2013. (If it were not classified, far more papers and pictures would have been published.) It may also be not, which is what I favor, as of now.
  • Aotian-1, based on information released and gathered at the time the subject came up, is a man-rated project from CALT while the "new type of space vehicle" involves lots of automation and originates from CASC
  • The new type of space vehicle might be an "extension" of CASC project 863-706 Shenlong
  • In early 2014, new information allegedly originating from CASC popped up on a chinese blog, NOT on any official CASC channel that I know of, as of now.
  • This early 2014 information, was then posted on a chinese defense related forum reaching a much wider, western target audience.
  • [Elixir], as always acting like an informal chinese aerospace defense news agency source, is back from their new year holidays and active as usual. Quite surprisingly though [Elixir] lagged behind this "announcement". [Elixir] postings on this subject, might be worth looking at.
  • The "new type of space craft" documents posted on the web in early 2014 contain sanitized code names, key words and expressions.
  • At no point does the code name "Aotian-1" appear in a legible manner in any of these documents.
  • Document forensics may also be of interest [QR code readings, etc.]
  • If anybody is available for translation, please help NOW.
Your move.

A.
 

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antigravite

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Deino said:
China Confirms Hypersonic Missile Carrier Test
http://www.voanews.com/content/reu-china-confirms-hypersonic-missile-carrier-test/1830606.html
Reuters

January 15, 2014
BEIJING — China has flight-tested a hypersonic missile delivery vehicle in a move that was scientific in nature and not targeted at any country, the Defense Ministry said on Monday.
Though unrelated to Aotian-1 and "Shenlong-2", another article of interest on a CAV-like boost-glide hypersonic weapon system is available from:

http://www.eurasiareview.com/27012014-significance-chinas-hypersonic-missile-vehicle-test-analysis/

Manoj Joshi, article author, is associated with the Observer Research Foundation (ORF), an indian think tank established in the early 1990s.

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antigravite

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你好

Personal note to whom it may concern for being so responsive: thank you 10000 times.
Always send a thank you note when it is appropriate to do so.
Again, whoever you are, 谢谢.

;)

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PS) This message is not intended to any SPF member that I know of.
 

antigravite

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n x (5849 + 517) = ?
What matters is n, not 299792458 nor ms

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antigravite

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As a consequence of some of the previously posted information herein and on other forums, here comes the first of a long series of topical articles begin to spring. It is very late, and these papers only scratch the surface of things. There is so much to say, to see, to tell.

On 22/02/2014 sinodefense.com forum member [DX] issued a very incomplete article on "China's Spaceplane programme".

DX, "China's Spaceplane programme", 22/02/2014,
http://sinodefence.com/2014/02/22/chinas-spaceplane-programme/

For [DX], the author, this subject is not new. Four years ago, in january 2010, he released a succinct review of "China's space shuttle programme in the 80's" partly built on Fisher's own reviews…
http://sinodefence.com/2010/01/01/chinas-space-shuttle-programme-in-the-80s/


[Extract.]
Automated High-Speed Approach and Landing Test

A short, seemingly benign news article published on a local government website in early 2014 has, by accident, revealed that a highly secretive landing test of an unmanned spaceplane vehicle had been successfully conducted. The article, published by a department of the Fujian Provincial Government, praised the significant contribution made by a local enterprise specialised in bearings to the successful flight test of a “key aerospace system”. According to the report, the vehicle had completed an “automated high-speed approach and landing test”, marking the grasp of the associated core technology.Coincidently, the same flight test was also mentioned in an official Thank You Letter issued by CALT to Northwestern Polytechnical University (NWPU). The letter, dated October 2013 and signed by the programme director and chief designer of an “unmanned aerospace vehicle system”, praised NWPU for its work on an electrical braking system used by the vehicle. The name of the programme was carefully blacked out on NWPU’s website. The letter claimed that the successful test of the unmanned vehicle not only enabled full grasp of automated high-speed approach and landing, but had also made a number of unprecedented achievements in the field of spaceplane both domestically and internationally. Although the exact type of the unmanned vehicle involved in the test is unknown at this stage, it can be assumed that the vehicle is somehow associated with the AoTian 1 development. Based on this progress, the vehicle is likely going to enter operational service by 2018-2020."[/size]
[End Extract]


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antigravite

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Visible light imaging image motion compensation device adapting to high-speed flight platform
Patent No. CN103292791
Inventor(s): HUO JIAQUAN; LIU LING; FAN HAIQING
Applicant(s): 3RD ACADEMY 8358TH RES INST OF CASC
Application number: CN20131240019 20130617
Priority number(s): CN20131240019 20130617
Abstract: The invention relates to an image motion compensation technology, and particularly relates to a visible light imaging image motion compensation device adapting to a high-speed flight platform. The visible light imaging image motion compensation device comprises a substrate and a base, wherein the substrate and the base form a cavity, a transparent structure is arranged at the top end of the base so that the convenience is brought for shooting of a camera arranged in the cavity, the substrate is used for installing an aircraft, a guide rail is arranged on the substrate, a high-precision sliding block is arranged on the guide rail and is capable of sliding along the guide rail, a CCD (Charge Coupled Device) chip used as a shooting device is arranged on the high-precision sliding block, a reset mechanism is arranged at one end of the guide rail, and a compensating mechanism is arranged at the other end of the guide rail. The visible light imaging image motion compensation device realizes the image motion compensation by adopting a method of driving the CCD device by piezoelectric ceramics; because a microdisplacement system is small in volume and size and high in image motion compensation precision, the demand on shooting a high-resolution image during high-speed flight can be met.
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I'm not sure where to put this, even after doing a basic search of the site.
Mods, please feel free to move to an appropriate thread if I've made an error...


The Chinese Defense Ministry confirmed the fourth test of a hypersonic nuclear delivery vehicle, which the US called an “extreme maneuver,” amid rising tensions between the two powers in the South China Sea.
The test of the hypersonic glide vehicle, which the US has dubbed the “WU-14”, was carried out on June 7 and is the missile’s fourth test in 18 months.
"The scheduled scientific research and experiments in our territory is normal, and those tests are not targeted at any country and specific goals," the ministry said in response to a report published on Thursday by the Free Beacon.
The strategic strike weapon is extremely advanced and can travel at 10 times the speed of sound, or 12,231.01kph.
http://rt.com/news/267115-china-tests-hypersonic-missile/

A fourth test of China's ultra high-speed hypersonic glide vehicle for nuclear delivery called the WU-14 was carried out by the People's Liberation Army last week, Bill Gertz, senior editor of the Washington Free Beacon, wrote in an article published on June 11.
Gertz said the test was conducted on June 7. As this is the the fourth test of the WU-14 in the past 18 months, US intelligence analysts believe the PLA has set a high priority on the development of the vehicle. The first WU-14 test is understood to have taken place on Jan. 9, 2014, followed by further tests on Aug. 7 and Dec. 2. All four tests have been conducted at the same facility in western China, the report said.
A US intelligence official told Gertz that in the latest test the WU-14 demonstrated for the first time the "extreme maneuvers" designed to penetrate US missile defense systems. The WU-14 threatens to neutralize US strategic missile defenses with the unique capability of flying at ultra-high speeds and maneuvering to avoid detection and tracking by radar and missile defense interceptors, said the official.

http://www.wantchinatimes.com/news-subclass-cnt.aspx?id=20150614000065&cid=1101
 

antigravite

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kaiserbill said:
I'm not sure where to put this, even after doing a basic search of the site.
Mods, please feel free to move to an appropriate thread if I've made an error...
(snip)
Hi there since we don't have any WU-14 related thread, which might be considered useful now, this one may serve as a repository for hypersonic related research in China, and we shall see later.
AOTIAN-1 is not WU-14 anyway, not funded by the same organizations.
There are many other hypersonic RDT&E projects in PRC. This forum hasn't discussed much whar was going there in the field of hypersonic airbreathers : ramjet, scramjet, DCR etc. for claimed defense and/or aerospace (RLV) applications.
Yep. Many projects often changing names…
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antigravite

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Hi there,

Spacewar.com now has a paper on recent chinese studies on blackout mitigation. (They've been working on that for quite a while, actually.)

Staff Writers, Communicating with hypersonic vehicles in flight, Spacewar.com, Washington DC (SPX) Jun 17, 2015
http://www.spacedaily.com/reports/Communicating_with_hypersonic_vehicles_in_flight_999.html


Xiaotian Gao and Binhao Jiang,"A matching approach to communicate through the plasma sheath surrounding a hypersonic vehicle,"Journal of Applied Physics, 09/06/2015

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antigravite

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antigravite said:
Hi there,

Spacewar.com has published a paper on recent chinese studies on blackout (通讯中断 的) mitigation. Chinese scientists and engineers have been working on that for quite a while, actually, and many labs are involved at various levels, including CAST's "Center of Spacecraft Assembly Integration and Test" (Beijing) and the "Key Laboratory of Ionospheric Environment", part of the CAS "Institute of Geology and Geophysics" (Beijing)

Staff Writers, Communicating with hypersonic vehicles in flight, Spacewar.com, Washington DC (SPX) Jun 17, 2015
http://www.spacedaily.com/reports/Communicating_with_hypersonic_vehicles_in_flight_999.html


Xiaotian Gao and Binhao Jiang,"A matching approach to communicate through the plasma sheath surrounding a hypersonic vehicle,"Journal of Applied Physics, 09/06/2015

A.
The source paper discloses very few references to well-documented chinese academic research and engineering activities. With few (three) exceptions:
  • Guolong He (Space Centre, Tsinghua Univ., Beijing, China), Yafeng Zhan ; Ning Ge ; Yukui Pei ; Bin Wu, “ Measuring the time-varying channel characteristics of the plasma sheath from the reflected signal,” IEEE Trans. Plasma Sci. 42(12), 3975–3981 (2014). http://dx.doi.org/10.1109/TPS.2014.23638400
  • K. Chen and C. Lin , “ Enhanced radiation from a plasma-imbedded antenna,” Proc. IEEE 56(9), 1595–1597 (1968). http://dx.doi.org/10.1109/PROC.1968.6659
  • Xiaotian Gao (高孝天)1, Chunsheng Wang (王春生)1,a), Binhao Jiang (江滨浩)1 and Zhonglin Zhang (张仲麟)1 (Harbin Institute of Technology, 92 West Dazhi Street, Nan Gang District, 150001 Harbin, China), “ A physical model of radiated enhancement of plasma-surrounded antenna,” Phys. Plasmas 21(9), 093301 (2014). http://dx.doi.org/10.1063/1.4895485
Somebody didn't do their homework.

First of, here are a few keywords of interest:

  • 等离子体鞘层 : Plasma Sheath
  • 黑障 : Blackout
  • 磁化等离子体 : Magnetized plasma
  • 衰减 : Attenuation
Also found three related patents (not quoted in the well-referenced, above-mentionned paper). They are interesting, easy to access and can thus be highlighted:

1/ 种缓解空间等离子体对高速飞行器再入通信影响的装置
"Device for relieving influence on high-speed aircraft reentry communication by space plasma"
CN 10379640
Inventors: PI YIMING, ; LI JIN, ; YANG XUYANG (UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA) [Chengdu ?]
ABSTRACT/ The invention discloses a device for relieving the influence on high-speed aircraft reentry communication by space plasma. The device is located in a plasma layer of a high-speed aircraft. The device for relieving the influence on high-speed aircraft reentry communication by the space plasma comprises a strong magnet and an electrode pair. The strong magnet is arranged in the inner surface of the high-speed aircraft located in the same axial direction with an electromagnetic wave receiving and sending antenna, the electrode pair is composed of an anode and a cathode, the anode and the cathode are located on the portions, at the two sides of the electromagnetic wave receiving and sending antenna, of a surface layer of the high-speed aircraft. The composite environment of an electric field and a magnetic field is created on a physical layer in space around the electromagnetic wave receiving and sending antenna of the high-speed aircraft, and an electromagnetic relieving layer is formed on the plasma layer of the high-speed aircraft. The problem of transmission interruption of communication signals in the process that the high-speed aircraft reenters the atmosphere is solved and the safety and real-time performance of space communication and the stability of signal transmission are guaranteed.
source: http://www.google.com/patents/CN103796407A

2/ 克服临近空间等离子壳套通信黑障的磁窗天线
"Magnetic window antenna for avoiding communication blackout of near space plasma shell jacket"
CN 103531897 A
Inventors: CHEN RUSHAN, ; DING DAZHI, ; FAN ZHENHONG, ; TAO SHIFEI (NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY)
ABSTRACT/ The invention discloses a magnetic window antenna for avoiding communication blackout of a near space plasma shell jacket. The antenna comprises a dielectric substrate, a radiation metal sheet, a metal ground plate, a metal feeder line and a box, wherein the radiation metal sheet is fixed on the upper surface of the dielectric substrate; the metal ground plate is printed on the lower surface of the dielectric substrate; the metal feeder line is in link connection with the metal radiation sheet and the metal ground plate, and is taken as the feed-in interface of antenna radio waves; the box is used for fixing carbon nanotube coils; a plurality of carbon nanotube coils are fixed in the box. The carbon nanotube coils are electrified to generate a constant strong magnetic field close to the coils, so that a plasma close to the antenna is magnetized; electromagnetic waves hardly attenuate while being transmitted in the magnetized plasma, so that the receiving and transmitting capabilities of the antenna are increased, and the problem of communication blackout of a near space high speed aircraft in a reentry process is solved.
source: http://www.google.com/patents/CN103531897A


3/ 种临近空间动态等离子鞘套信道建模及模拟的方法
"Near space dynamic plasma sheath channel modeling and simulating method"
CN104378170 A
Inventors: SHI LEI, ; LI XIAOPING, ; LIU YANMING, ; ZHOU HUI, ; YAO BO, ; FANG SHUIXUN (XIDIAN UNIVERSITY)
ABSTRACT/ The invention discloses a near space dynamic plasma sheath channel modeling and simulating method. The method comprises the steps that channel resources are partitioned according to large-scale space-time-frequency characteristics to construct a large-scale space-time-frequency channel resource matrix, wherein the height corresponds to large-scale space domain characteristics, the speed corresponds to large-scale time domain characteristics, and frequency points correspond to large-scale frequency domain characteristics; for all channel resource matrixes, dynamic small-scale channel parameters are obtained; small-scale channel model simulating is achieved according to given small-scale channel parameters; large-scale channel model simulating is achieved by repeating small-scale channel models at multiple states on a near space flight path. The method is suitable for channel modeling under different dynamic rules, random-amplitude phase probability density distribution which may occurs under a plasma sheath is simulated, and channel modeling feasibility is guaranteed; the method is suitable for near space aircraft plasma sheath channel modeling and spaceflight reentry-return spacecraft plasma sheath channel modeling.
source: http://www.google.com/patents/CN104378170A

Bibliographic data: CN105808794 (A) ― 2016-07-27

4/ xxxxxxxxx
"Time domain integral equation method for analyzing electromagnetic scattering characteristic of hypersonic flight object"
CN105808794 A
Inventors: CHEN RUSHAN; DING DAZHI; FAN ZHENHONG; HUYAN LONG (NANJING SCIENCE & TECHNOLOGY UNIVERSITY)
ABSTRACT/ The invention discloses a time domain integral equation method for analyzing the electromagnetic scattering characteristic of a hypersonic flight object. The time domain integral equation method comprises that a time domain volume-surface integral equation is established; according to the structural scattering characteristic, the total electric field on the stimulated object is equal to the sum of an incident electric field and a scattered electric field, and the incident electric field is stimulated; the integral equation is discretized, tests in space and time are carried out, and a time domain matrix equation is established; the relationship between the dielectric flux density and the electric field intensity of plasma is established; and the time domain matrix equation is solved, and the electromagnetic scattering characteristic of a mixed object in broadband is analyzed. According to the invention, only the object model needs to be discretized, by means of a free space green function and a recursive convolution method, a mixed object containing heterogeneous plasma medium and metal can be analyzed, the calculating precision is high, and the number of unknowns is relatively small; at the same time, a time domain method is employed for solution, the electromagnetic scattering characteristic of each frequency point in broadband can be calculated for one step, compared with a frequency domain method that frequency sweep operation is needed, the time domain integral equation method is advantaged in that the solving time is reduced.

And so on, an so forth.

below is a quick list of randomly chosen papers of interest matching up the reference target material:



1982
  • 王柏懿,. 再入飞行中等离子鞘的电磁效应[J]. 力学与实践. 1982(02)
1983
  • Zhao Han-Zhang Wu Shi-Jing(Institute of Systems Science, Academia Sinica)DONG NAI-HAN(Beijing Institute of Remote Sensiong Equipments);ON THE PROPAGATION OF ELECTROMAGNETIC WAVE IN A INHOMOGENEOUS PLASMA SHEATH[J];Chinese Journal of Geophysics;1983-01
1984
  • Xu yanhou;Ji zhenyu;Cheu baoyan;Fang Iu China University of Science and Technology;The Propagation Characteristic of Oblique Incident Plane Electromagnetic Waves through Re-entry Plasma Sheath Layer[J];;1984-04
  • 焦淑卿,冯德光,. 等离子鞘套的反射系数与穿透系数[J]. 数学物理学报. 1984(04)
  • 董乃涵赵汉章,吴是静,. 非均匀等离子鞘套中电波传输的近似计算[J]. 宇航学报. 1984(01)
  • 李伟范,. 美国弹头“黑障区”信号获取途径分析[J]. 国外导弹与宇航. 1984(03)
1985
  • ZHAO HAN-ZHANG WU SHI-JING (Institute of Systems Science, Academia Sinica)DONG NAI-HAN (Beijing Institute of Remote Sensing Equipments);ON THE PROPAGATION OF ELECTROMAGNETIC WAVES IN AN INHOMOGENEOUS PLASMA SHEATH (Ⅱ)[J];Chinese Journal of Geophysics;1985-02
  • Wang Boyi Xu Yanhou Ji Zhenyu;PROPAGATION OF ELECTROMAGNETIC WAVES IN INHOMOGENOUS AND LOSSY REENTRY PLASMA SHEATH LAYER[J];Journal of Astronautics;1985-01
1987
  • Feng Lin;AN APPROXIMATE SOLUTION TO THE ELECTROMAGNETIC HELMHOLTZ'S EQUATION IN REENTRY PLASMA SHEATH[J];Journal of University of Electronic Science and Technology of China;1987-07
2001
  • YANG Hua SHI Jia-ming LING Yong-shun (Electronics Engineer Institute , Hefei Anhui 230037 , China );Studies of reflection characteristics of electromagnetic waves propagating into magnetized plasma[J];Chinese Journal of Radio Science;2001-02
2003
  • SHEN Zi-cheng (Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094,China);Review of Related Techniques of Space-based TT&C Network and Space-based Information Network[J];Telecommunication Engineering;2002-01
  • LIU Shao-bin 1,2 ,MO Jin-jun 1,YUAN Nai-chang 1 (1.Institute of Electronic Science and Engineering,NUDT,Changshai,Hunan 410073,China; 2.Basic Courses Department,Nanchang University,Nanchang,Jiangxi 330029,China);Research on the Absorption of EM-Wave by Inhomogeneous Magnetized Plasmas[J];Acta Electronica Sinica;2003-03
2004
  • LU Wen-qing,PAN Cheng-sheng (Shenyang Ligong University,Shenyang 110168,China);An Analysis of the Factors that May Affect the Electromagnetic Wave Propagation in the Space Communications[J];Fire Control & Command Control;2004-05
  • ZHAO Hong-kang,LU Jian-ping (School of Science, Beijing Institute of Technology, Beijing100081, China);Attenuation of Plane Electromagnetic Waves in Plasmas[J];Journal of Beijing Institute of Technology;2004-04
2005
  • WU Bin~1, LIN Lie~1, WU Cheng-kang~1, ZHANG Peng~2, WANG Yong-qing~2 (1.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China; 2. Shenyang Aircraft Research Institute, Shenyang 110035, China );Propagation characteristics of a vertical incident microwave in a non-equilibrium plasma slab at atmospheric pressure[J];High Power Laser & Particle Beams;2005-02
  • WENG Mu-yun~1,FU Xiao-yan~2(1.Electronic Information School,Northwestern Polytechnical University,Xi'an 710077,China;2.Northwest Electrical Training Centre,Xi'an 710054,China);Channel Attenuation Characteristics of Satellite Communications in Ka-Band[J];Telecommunication Engineering;2005-05
  • Geng You-lin Wu Xin-bao Guan Bo-ran (School of Electronic Engineering, Xidian University, Xi'an 710071, China) (The Inst. of Antenna and Microwaves, Hangzhou Univ. of Electronic Engineering, Hangzhou 310018, China) (Shanghai Institute of Microwave Technology, Shanghai 200063, China);The Analytical Solution of Electromagnetic Scattering by Multilayered Plasma Anisotrojpic Spheres[J];Journal of Electronics and Information Technology;2005-06
  • Ma Zhao-guo, Gao Zheng-ping , Rao Ke-jinUniversity of Electronic Science and Technology,Chengdu 610054,China;Transmission Study of Electromagnetic Waves in the Missile Reentry[J];Control Technology of Tactical Missile;2005-03
  • Qian, Z. H., R.-S. Chen, K. W. Leung, and H. W. Yang, “FDTD analysis of microstrip patch antenna covered by plasma sheath,” Progress In Electromagnetics Research, Vol. 52, 173–183, 2005.
2006
  • LIU Qiang,KUANG Jingming,WANG Hua(Advanced Communications Lab,Department of Electronic Engineering,Beijing Institute of Technology,Beijing 100081);Distributed Tactical Communication Network Simulation Based on HLA[J];Computer Engineering;2006-12
  • Zhu Bing Yang Juan Huang Xue-Gang Mao Gen-Wang Liu Jun_Ping(College of Astronautics, Northwestern Polytechnic University, Xi'an 710072,China);Experimental study on the plasma jet attenuation of reflected wave in vacuum environment[J];Acta Physica Sinica;2006-05
  • YIN Zhizhong~1,LI Qiang~2(1.Department of Training,the Academy of Equipment Command & Technology,Beijing 101416,China;2.Company of Postgraduate Management,the Academy of Equipment Command & Technology,Beijing 101416,China);Analysis of Near Space Vehicle and Its Military Application[J];Journal of the Academy of Equipment Command & Technology;2006-05
  • Lu Q M, Wang S. Electromagnetic waves downstream of quasi-perpendicular shocks. J Geophys Res, 2006, 111(A05204), pp.1–11
2007
  • Guo Bin Hu Youping(School of Science,Wuhan University of Technology,Wuhan,430070);Absorption of Electromagnetic Waves in Nonthermal Equilibrium Plasma under Atmospheric Conditions[J];Journal of Wuhan University of Technology(Transportation Science & Engineering);2007-04
  • Zhu Liangming,Mao Gengwang,Xu Yingqiao,Yang Juan (College of Astronautics,Northwestern Polytechnical University,Xi′an 710072,China);Experimental Study of Electron Density Distribution of Microwave Plasma Plume with Restricted Boundary[J];Journal of Northwestern Polytechnical University;2007-05
  • JIN Hong-biao1,WU Xiu-peng2,LI Wen-ze1 (1.73661 Unit of PLA,Xianyou 351251,China;2.Ordnance Engineering College,Shijiazhuang 050003,China);Design of Ammunition Supply Support Federation Based on HLA[J];Equipment Environmental Engineering;2007-06
  • SUN Jian,HUANG Jin-wu(Southwest China Institute of Electronic Technology,Chengdu 610036,China);Discussion on the TT&C and Data Transmission Technology for Spaceplanes[J];Telecommunication Engineering;2007-01
  • HU Jian-ping1,DENG Xue-qun2,YU Fang1(1.Southwest China Institute of Electronic Technology,Chengdu 610036,China;2.School of Electronic Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China);Link Characteristics and Anti-interference Technology of Ka-band TT&C and Communication Network[J];Telecommunication Engineering;2007-06
  • Ma Zhao-guo,Gao Zheng-ping,Bi Zhao-yi Electronic Science and Technology University,Chengdu 610054, China;Transmission Properties of Microwaves through Plasma Sheath in the Reentry of High-Speed Aircraft[J];Control Technology of Tactical Missile;2007-01
  • SUN Jian,HUANG Jin-wu(Southwest China Institute of Electronic Technology,Chengdu 610036,China);Discussion on the TT&C and Data Transmission Technology for Spaceplanes[J];Telecommunication Engineering;2007-01
  • LI Xiaojiang1,LI Zhide2,YANG Jian1,AN Yigui1(1.Department of Space Equipment,the Academy of Equipment Command & Technology,Beijing 101416,China;2.Department of Training,the Academy of Equipment Command & Technology,Beijing 101416,China);Study on Concept and Technology of Near Space Equipment Architecture[J];Journal of the Academy of Equipment Command & Technology;2007-04
  • WANG Yanguang LI Jianquan LI Yong YAO Wei(China Academy of Space Technology,Beijing 100081,China);Characters and Application Prospects of Near Space Flying Vehicles[J];Spacecraft Engineering;2007-01
  • Yang, H., W. Tang, and X. Kong, “Calculation of the effect on the reflection of the plane electromagnetic wave for non-
    magnetized plasma with different electron density distributions,”
    International Journal of Infrared and Millimeter Waves, Vol. 28, No. 7, 547–556, 2007.

2008
  • LI Hong1,WU Si-liang1,PANG Yan-li2(1.Beijing Institute of Technology,Beijing 100081,China;2.Naval Academy of Armament,Beijing 100161,China);The research of simulation model based on HLA object-oriented method in radar electronic warfare[J];Ship Science and Technology;2008-06
  • Mou Xinwei Ju Zhansheng(Telecommunication Engineering Institute,Air Force Engineering University,Xi'an 710077,China);The Electromagnetism Calculation in Air-Ground HF Communication Based on ITS[J];Electronic Science and Technology;2008-06
  • Chai Lin(The 10th Institute of China Electronics Technology Group Corporation,Chengdu 610036,China);Selection of Work Frequency for Near Space Vehicle TT&C and Information Transmission System[J];Acta Aeronautica Et Astronautica Sinica;2008-04
  • CHAI Lin,WU Qian,LEI Li (Southwest China Institute of Electronic Technology,Chengdu 610036,China);Analysis of Development Trend of the TT&C Communication System for Near Space High Dynamic Vehicles[J];Telecommunication Engineering;2008-01
  • LIU Jia-xing(Southwest China Institute of Electronic Technology,Chengdu 610036,China);A Tentative Idea for Nearspace Tracking and Data Relay System(TDRS)[J];Telecommunication Engineering;2008-05
  • Chai Lin(The 10th Institute of China Electronics Technology Group Corporation,Chengdu 610036,China);Selection of Work Frequency for Near Space Vehicle TT&C and Information Transmission System[J];Acta Aeronautica Et Astronautica Sinica;2008-04
  • CHAI Lin,WU Qian,LEI Li (Southwest China Institute of Electronic Technology,Chengdu 610036,China);Analysis of Development Trend of the TT&C Communication System for Near Space High Dynamic Vehicles[J];Telecommunication Engineering;2008-01
  • Chai, L., “Selection of work frequency for near space vehicle TTC and information transmission system,” Acta Aeronautica et Astronautica Sinica, Vol. 29, No. 4, 1007–1012, 2008.

2009
  • Pan Wenjun,Tong Chuangming,Zhou Ming (Missile Institute of Air Force Engineering University,Shan xi Sanyuan,713800);Application of UPML Absorbing Boundary in Calculation of the Plasma Coated Targets[A];[C];2009
  • LIU Jiangfan, XI Xiaoli,LIU Yang ( Xi’an University of technology, Xi’an 710048);Calculation of Propagation Characteristics of Electromagnetic Wave in Plasma Sheath Using ADE-FDTD Method[A];[C];2009
  • LIU Yang, WANG Lili, LIU Jiangfan, XI Xiaoli ( Xi’an University of technology, Xi’an 710048);WKB solution for Wave Propagate through the plasma sheath[A];[C];2009
  • Yang Juan(1) Long Chun-Wei(1) Chen Mao-Lin(1) Xu Ying-Qiao(1) Tan Xiao-Qun(2) 1)(College of Astronautics,Northwestern Polytechnic University,Xi'an 710072, China) 2)(School of Mechatronics,Northwestern Polytechnic University,Xi'an 710072,China);Experimental study on the effect of applied magnetic field on plane wave attenuation by microwave plasma plume[J];Acta Physica Sinica;2009-07
  • XU Mao-ge,XI Wen-jun(Southwest China Institute of Electronic Technology,Chengdu 610036,China);Study on Blackout in Near Space Hypersonic Vehicle Radio Frequency Communication[J];Telecommunication Engineering;2009-10
  • LIU Jiangfan, XI Xiaoli,LIU Yang ( Xi’an University of technology, Xi’an 710048);Calculation of Propagation Characteristics of Electromagnetic Wave in Plasma Sheath Using ADE-FDTD Method[A];[C];2009
  • Ma Lai-xuan,Zhang Hou,Zhang Chen-xin (Missile Institute of Air Force Engineering University,Sanyuan Shhanxi 713800,China);Analysis of Plasma Interference Mechanism[A];[C];2009
  • 刘江凡,. 等离子鞘套中电波传播的算法研究[D]. 西安理工大学 2009 [PhD Thesis]
  • Yang, H., X. Duan, and H. Lu, “Simulation of electromagnetic wave reflection on plasma by multiresolution time-domain
    method,”
    Journal of Infrared, Millimeter and Terahertz Waves, Vol. 30, No. 1, 51–55, 2009.
  • Lu H Y, Lee C H, Dong H T. Characterization of the three-dimensional supersonic flow for the MHD generator. Sci China-Phys Mech Astron, 2009, 52: 534–545
2010
  • PAN Wenjun,TONG Chuangming,ZHOU Ming(The Missile Institute,Air Force Engineering University,Shaanxi Sanyuan 713800,China);Application of a New Method of Setting the Plane-wave in Calculation of the Plasma Coated Targets[J];Journal of Projectiles,Rockets,Missiles and Guidance;2010-03
  • He Xiang1,Chen Jianping2,Ni Xiaowu1,Wu Ying1,Chen Yudong2,Zeng Xiaojun2,Qin Haichao2(1. College of Science,Nanjing University of Science and Technology,Nanjing 210094,China;2. Beijing Aeronautical Technology Research Center,Beijing 100076,China);Attenuation of planar electromagnetic waves by inhomogeneous plasma[J];High Power Laser and Particle Beams;2010-09
  • CHAI Lin(Southwest China Research Institute of Electronic Technology,Chengdu 610036,China);Technical Characteristics Analysis of The TT&C Communication System for Near Space Vehicle[J];Journal of Astronautics;2010-07
  • 孟龙,. 源于人工电磁材料的高效率电小天线研究[D]. 北京邮电大学 2010 [PhD Thesis]
  • 贺忠伟,. 加载小型化宽频带天线研究[D]. 西安电子科技大学 2010 [PhD Thesis]
  • Lei, S., Y. Liu, B. Guo, and S. Jin, “Research on phase shift characteristics of radio propagate through plasma sheath,” 2010 - 9th International Symposium on Antennas Propagation and EM Theory, ISAPE 2010, IEEE Computer Society Guangzhou, China, Nov. 29–Dec. 2, 2010.
2011
  • Ma Chun-Guang1) Zhao Qing1) Luo Xian-Gang2) He Guo1) Zheng Ling1) Liu Jian-Wei1) 1)(School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China) 2)(Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China);Study on attenuation characteristics of millimeter wave in plasma[J];Acta Physica Sinica;2011-05
  • He Xiang1,Chen Jianping2,Chu Ran3,Chen Yudong2,Zeng Xiaojun2,Ni Xiaowu1(1.College of Science,Nanjing University of Science and Technology,Nanjing 210094,China;2.Beijing Aeronautical Technology Research Center,Beijing 100076,China;3.Microwave Center,Nanjing University of Science and Technology,Nanjing 210094,China);Experimental investigation on radar cross section reduction of plasma covered cavity[J];High Power Laser and Particle Beams;2011-05
  • LIU Yun-ge(Southwest China Institute of Electronic Technology,Chengdu 610036,China);S/Ka Band TT&C Communication System Design and Key Techniques Analysis[J];Telecommunication Engineering;2011-06
2012
  • Zheng Ling(1)) Zhao Qing(1)) Luo Xian-Gang(2)) Ma Ping(1)) Liu Shu-Zhang(1)) Huang Cheng(2)) Xing Xiao-Jun(1)) Zhang Chun-Yan(1)) Chen Xu-Lin(1)) 1)(School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China) 2)(State Key Laboratory of Optical Technologies for Microfabrication,Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,China);Theoretical and experimental studies of electromagnetic wave transmission in plasma[J];Acta Physica Sinica;2012-15
  • HU Hongjun1,CHEN Yong2,CHEN Ju2(1 School of Astronautics,Northwestern Polytechnical University,Xi'an 710072,China; 2 Xi'an Satellite Monitor and Control Center,Xi'an 710043,China);The Discussion on TT&C Technology for Spacecraft in Blackout Area[J];Journal of Projectiles,Rockets,Missiles and Guidance;2012-02
  • Zheng Ling Zhao Qing Liu Shu-Zhang Xing Xiao-Jun(School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,China);Studies of terahertz wave propagation in non-magnetized plasma[J];Acta Physica Sinica;2012-24
  • Anon, The Requirements and Strategy Analysis for TT&C of Near Space Vehicles[J];National Defense Science & Technology;2012-02
  • LI Jian-peng,Lü Na,ZHANG Chong(Air Force Engineering University,Telecommunication Engineering Institute,Xi'an 710077,China);Study on Approaches for Mitigating Hypersonic Vehicle Communications Blackout[J];Fire Control & Command Control;2012-02
  • YUE Ying-chao,XIAO Tian-yuan,FAN Wen-hui,MA Cheng,CHEN Xin(Nation CIMS Engineering Research Center,Tsinghua University,Beijing 100084,China);Semantic interoperation of high level architecture based on multi-view nesting ontology mapping[J];Computer Integrated Manufacturing Systems;2012-05
  • LI Jian-peng,Lü Na,ZHANG Chong(Air Force Engineering University,Telecommunication Engineering Institute,Xi'an 710077,China);Study on Approaches for Mitigating Hypersonic Vehicle Communications Blackout[J];Fire Control & Command Control;2012-02
  • LI Yong1,DAI Ming2,CHANG Li-xin3(1.The 54th Research Institute of CFTC,Shijiazhuang Hebei 050081,China;2.China Transport Telecommunication & Information Center,Beijing 100011,China;3.The Military Department of General Staff Stationed in Shijiazhuang,Shijiazhuang Hebei 050081,China);Design of a Ka-band Multiple-beam Reflector Antenna[J];Radio Engineering;2012-08
  • Shi, L., B.-L. Guo, Y.-M. Liu, and L. Zhao, “Research on integrated channel model for Near-space hypersonic vehicle,”
    Yuhang Xuebao/Journal of Astronautics, Vol. 32, No. 7, 1557–1563, 2011.
  • Ai, X., Y. Han, C. Y. Li, and X.-W. Shi, “Analysis of dispersion relation of piecewise linear recursive convolution FDTD method for space-varying plasma,” Progress In Electromagnetics Research Letters, Vol. 22, 83–93, 2011
  • Liu, J.-F., X.-L. Xi, G.-B. Wan, and L.-L. Wang, “Simulation of electromagnetic wave propagation through plasma sheath using the moving-window finite-difference time-domain method,” IEEE Transactions on Plasma Science, Vol. 39, No. 3, 852–855, 2011.
  • Li, J.-T., L.-X. Guo, Q.-J. Fang, and W. liu, “Electromagnetic wave propagation in plasma sheath of hypersonic vehicles,” Systems Engineering and Electronics, Vol. 33, No. 5, 969–973, 2011
  • Li J P, Lv N, Zhang C. Study on approaches for mitigating hypersonic vehicle communications blackout (in Chinese). Fire Contr Comm Contr, 2012, 37, doi: 10.3969/j.issn.1002-0640.2012.02.042
  • Su Y Q, Lu Q M, Gao X L, et al. Ion dynamics at supercritical quasiparallel shocks: Hybrid simulations. Phys Plasmas, 2012, 19(092108): 1–5
  • Zheng L, Zhao Q, Liu S, et al. Theoretical and experimental studies of 35 GHz and 96 GHz electromagnetic wave propagation in plasma. Prog Electrom Res, 2012, 24: 179–192 [this paper rather explores blackout mitigation by means of higher frequencies…]
2013
  • LIU Feng,ZHU Zhong-bo,CUI Wan-zhao(Science and Technology on Space Microwave Laboratory,China Academy of Space Technology(Xi'an),Xi'an 710100,China);Prospects on Space THz Information Techniques[J];Journal of Microwaves;2013-02
  • Tao Z, Ni M J. Benchmark solutions for MHD solver development. Sci China-Phys Mech Astron, 2013, 56: 378–382
2014
  • 方圆,. 再入等离子鞘层中的电磁波传输特性研究[D]. 哈尔滨工业大学 2014 [PhD. Thesis]
  • 张洋,. 电磁波斜射入等离子体介质的FDTD方法[D]. 西安电子科技大学 2014 [PhD. Thesis]
In light of these TTC&DC elements, China's own GPS system and architecture - Beidou - fits this picture pretty well.


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antigravite

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Re: Iaotian-1, a Chinese hypersonic reentry demonstrator flown tested on 20/09/2013?

SOC said:
antigravite said:
The number of potential sites where the test flight supposedly happened is limited to 30 Air Bases of interest including the Dingxin / Shuangchengzi AB which has a special missile testing unit.
Dingxin is not in the same region.
Thx


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antigravite

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Question.

Anybody having leads on PRC's hypersonic flight ground test facilities, achievements, plans, projects, university and industry teams? A lot of information is available but it seems we don't have this kind stuff posted on this forum yet. That for sure would be a nice repository. No ground test. No flight test. So.

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antigravite

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Hi. Slightly off topic but not so much as it pertains to the ease of access to Chinese S&T litterature. And I'll be careful enough to loop the loop and weave it back to the topic.

Below is a screenshot of the nodal architecture of Chinese scholar's IS, for each academia article published on any subject of interest. It also extends to patent literature, blogs, websites, PhDs theses manuscripts, etc. It is quite impressive.

For those who do not understand the power of a centralized "communist" economy, this sort of information system (IS) cannot exist in any other not-centralized system -- to the best of my knowledge, of course. Everything published is sucked up and indexed in an orderly, nodal referenced system.

This information system was dreamt of by Tsien Hsue-Shen in the early 1980s, as described by Iris Chang in her biography of this father of the contemporary chinese space rocketry. getting back to our thread, Tsien was key to evaluate Sänger's report on the Raketenbomber (WWII's spaceplane bomber concept) and came up with the new field of study: superaerodynamics (hypersonics in rarefied dynamics.) Tsien was von Karman's protege. Looping the loop, hey!

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flateric

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antigravite said:
Come on guys and girlies, don't be shy... Does this image look familliar or ring any kinda bell? What is the closest equivalent you know of?
...a fantasy schoolboys' H-8/H-9/H-X
 

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antigravite

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flateric said:
antigravite said:
Come on guys and girlies, don't be shy... Does this image look familliar or ring any kinda bell? What is the closest equivalent you know of?
...a fantasy schoolboys' H-8/H-9/H-X
Flateric, you are likely the only person able to connect the dots to the fanboy CGI presented at this pro conference! Thx alot, as always.
And BTW, I keep editing / completing my bibliographical posts in this thread.

Thx again, really.

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phrenzy

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Re: the magnetic windows and other systems designed to allow antennae and sensors to operate during re-entry, would they most likely be for command guidance or for onboard sensors to inform onboard decision making? Obviously they aren't mutually exclusive, but would you expect most of the tracking updates to come externally? How much intelligence would you pack in something like this?

Would it have much use as a high speed re-taskable recon platform if the plasma blackout wasn't a problem? Have to wonder if some of the US recon analogues had similar systems, copper canyon and the like.
 

antigravite

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phrenzy said:
Re: the magnetic windows and other systems designed to allow antennae and sensors to operate during re-entry, would they most likely be for command guidance or for onboard sensors to inform onboard decision making? Obviously they aren't mutually exclusive, but would you expect most of the tracking updates to come externally? How much intelligence would you pack in something like this?

Would it have much use as a high speed re-taskable recon platform if the plasma blackout wasn't a problem? Have to wonder if some of the US recon analogues had similar systems, copper canyon and the like.
Hi back;

Most open, and easily available Chinese S&T literature discussing or tackling those subjects always quote recent US papers on blackout mitigation, as well as a series of NASA conference proceedings dating back to the 1970s (fact check this, my memory might fail) which you can all download from DoD's DTIC website.

The questions you ask are short but pertinent; they require, however, complex answers and echo ViceNews' recent article (well, the title is self-explanatory, contents is a bit below their publishing standards IMO):

You may use blackout mitigation (BM) techniques to (try to) open specific windows for specific bands which would be designed for telemetry or GN&C only. Many reference books on hypersonics authored by Chinese scientists are now available. One of them, published in 2012, might help you:

  • H.F. Li, Hypersonic vehicle guidance and control technology, M. Beijing: China Astronautic Publishing House, 2012(in Chinese), and can be puchased from here:http://www.abebooks.com/Hypersonic-vehicle-guidance-control-technology-Set/10565778355/bd

TOC: Pub Date: October 2012 Pages: 670 in Publisher: China Astronautic Publishing hypersonic vehicle guidance and control technology (Set 2 Volumes) covers the concept and design of hypersonic vehicles cycle Guidance and Control Technology. both The preliminary design can be applied to aircraft conceptual design can also be used in the detailed design of the aircraft. Generation methods. including the aircraft movement model aircraft model aircraft atmospheric environment model Earth model spacecraft trajectory design and optimization design of the guidance law and control law design and evaluation of guidance and control methods. Contents: Chapter 1 Introduction 1.1 hypersonic vehicles 1.1.1 The reentry vehicle 1.1.2 manned spacecraft 1.1.3 reusable launch vehicle and related technology demonstrator 1.1.4 the hypersonic vehicle aspirated 1.2 hypersonic vehicle concept initially the main task of design guidance and control technology 1.2.1 Guidance and control technology in the preliminary design phase hypersonic vehicle concepts 1.2.2 GNC hypersonic vehicle concepts preliminary design stages of the design process 1.2.3 control Integrated Design Environment 1.3 Hypersonic 2.1 Preliminaries 2.1.1 vector aircraft guidance and control technology challenges facing 1.4 book writing features and content arrangements 1.4.1 book writing characteristics 1.4.2 book arrangements References Chapter 2 hypersonic vehicle equations of motion component arrays 2.1.2 coordinate transformation 2.2 coordinate system and movement variables defined in 2.2.1 Coordinate System Definition 2.2.2 coordinate system conversion 2.2.3 2.2.4 Soviet-type coordinate system and the definition of the Euler angles Europe and the United States coordinate system 2.3 high the establishment of six degrees of freedom of the supersonic aircraft rigid body motion equations 2.3.1 2.3.4 Other supplementary hypersonic vehicle quality 2.3.2 aircraft rotary motion of the heart motion dynamics equations of general form kinetic equation 2.3.3 hypersonic vehicle kinematic equations equation 2.4 motion equations simplify 2.4.1 model-based guidance system designed to simplify 2.4.2 to simplify the hypersonic vehicle motion equations 2.5 elastomers establishing 2.4.1-based control system design model equations of motion of non-inertial coupling elastomer 2.4.2 The equations of motion of inertial coupling elastomer 2.4.3 longitudinal plane coupled kinetic equations derivation of Chapter 3 of the Reference 3.1 hypersonic vehicles Modeling Techniques 3.1.1 aircraft parameterized geometry modeling method 3.1.2 hypersonic hypersonic vehicle modeling aerodynamic engineering prediction methods 3.1.3 hypersonic aerodynamic heating engineering prediction method 3.1.4 scramjet modeling method parameter of 3.2 aircraft coordinate system of the geometric shape modeling 3.2.1 3.2.2 body geometry modeling 3.2.3 the hood design 3.2.4 wing and pneumatic control surface design 3.2.5 parameterized geometric shape modeling results predicted 3.3 3.2.6 Aircraft mesh generation 3.2.7 with CAD-based method of comparing 3.3 hypersonic aerodynamic engineering. 3.3.2 The pressure coefficient of a the calculated surface element and impact angle 3.3.3 hypersonic inviscid flow aerodynamic Calculation 3.3.4 frictional resistance calculated 3.3.5 fix 3.4 hypersonic aerodynamic heating engineering CFD-based aerodynamic model forecast 3.4.1 high temperature 3.4.2 boundary layer of air physical properties of the outer edge of flow parameters 3.4.4 3.4.3 Reference temperature method of aerodynamic heating and heat flux of thermal radiation 3.4.5 3.5 3.4.1 ramjet supersonic combustion ramjet modeling Overview 3.4.2 ramjet The principle and performance indicators 3.4.3 the scramjet engine thrust mechanism 3.4.4 scramjet flow field of theoretical calculation method 3.6 Calculation example 3.6.1 wing-body combi.

[/list]COPPER CANYON? Well, I don't know if anything on BM has been studied / published on/for this early 1980s SSTO RLV system predating US NASP. I'd first try to investigate another line such as a still little-known mid-1980s hypersonic boost glide vehicle program called "HAVE NOT" which was cancelled at some point, to the best of my knowledge (it would be rather surprising these BM issues were not studied at the time.) For sure, US hypersonic efforts are inspirational for Chinese prospective weaponmakers; so looking at what's available on one side of the Pacific Ocean is helpful to understand what might serve as guidelines on the other side. Example of an interesting hypersonic patent-related analysis from a little known institute (Beijing Seahawks Science and Technology Information Institute):

  • Li Yelan, Bai Yang, Zhou Peng, Patent Analysis of the Course of Aerojet's Business and the Key Technologies of Hypersonic, Procedia Engineering, Volume 99, 2015, pp.773-779: Proceedings of the 2014 Asia-Pacific International Symposium on Aerospace Technology, APISAT2014 September 24-26, 2014 Shanghai, China. Abstract: This study researched the patents published from 1942 to March of 2014 of Aerojet Company (including Aerojet Rocketdyne Company's patents) in USA, considering Aerojet's annals and other information, analyzed relationship of the patents and the course of Aerojet's business development, and the technology R&D process, and extracted the key hypersonic technologies of Aerojet Company, at last raised the conclusion. Source paper: http://ac.els-cdn.com/S1877705814037151/1-s2.0-S1877705814037151-main.pdf?_tid=9157c328-35b9-11e5-a700-00000aab0f6c&acdnat=1438150862_462d3046fb4571f6e39fbefb9509cb9f
Chinese S&T literature is replete with -- hundreds of -- RLV reentry/guidance papers such as:
  • Ping Lu, Entry Guidance and Trajectory Control for Reusable Launch Vehicle, J. Journal of Guidance, Control, and Dynamics.1997.20(1):143-149
  • Ping Lu, Predictor-Corrector Entry Guidance for Low-Lifting Vehicles, J. Journal of Guidance, Control, and Dynamics.2008.31(4):1067-1075.
  • J.B. Wang, Y. Tian, Z. Ren, Mixed guidance method for re-entry vehicles based on optimization, J. Journal of Beijing University of Aeronautics and Astronautics.2010.36(6)(in Chinese).
  • G. Chen, Study of reentry guidance and terminal area energy management for lifting vehicle, D. Harbin: Harbin Institute of Technology, 2011(in Chinese).
  • Q. Wang, M.P. Ran,Y. Zhao, Re-entry guidance for hypersonic vehicle based on predictor-corrector method, J. Journal of Beijing University of Aeronautics and Astronautics. 2013.39(12):1563-1567(in Chinese).
Lastly, there is a lot of homework required to answer your question. Chinese scientists regularly organize expert-level conferences on GNC and tracking such as the China Guidance, Navigation and Control Conference (CGNCC), described as "the largest academic conference on the guidance, navigation and control of aeronautical and astronautic flying vehicles in China" (CSAA website). This conference is organized by the CSAA's Technical Committee on Guidance, Navigation and Control (TCGNC) and here's a recap of past and planned conferences where BM and hypersonic-related GNC has been (and will be) discussed:

  • IEEE CGNCC2007 > 2007 Chinese Guidance, Navigation and Control Conference - 3-5 November, 2007, Beijing, China
  • IEEE CGNCC2008 > 2008 Chinese Guidance, Navigation and Control Conference - 14-16 November, 2008, Xi'an, China
  • IEEE CGNCC2009 > 2009 Chinese Guidance, Navigation and Control Conference - 13-15 November, 2009, Beijing, China
  • IEEE CGNCC2010 > 2010 China Guidance, Navigation and Control Conference - 9-10 October, 2010 - Shanghai, China
  • IEEE CGNCC2014 > 2014 Chinese Guidance, Navigation and Control Conference [2014中国制导、导航与控制学术会议] - Yantai City (烟台), Shandong Province - 8-10 August 2014
  • IEEE CGNCC2016 > 2016 IEEE Chinese Guidance, Navigation and Control Conference - Yantai City (烟台), Shandong Province (originally planned in Nanjing, Jiangsu Province) - http://cgncc.buaa.edu.cn/
It's always helpful to get an integrated, system, contextual (over)view. What type of system-level architecture would be necessary to allow any such retargatable system, etc. Terminal guidance with low CEP is not something I've gone into yet, since it's RLV-off topic in this current context.

A.
PS) I try to keep updating the reference paper list in every related post which I often edit. Hope this helps.
 

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antigravite

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Hi.

For what it's worth, and looking back again and again at Aotian-1 story, against other several chinese "winged" reentry projects (Shenlong, Wu-14, etc.), something annoys me.

In january 2014, at least one chinese media outlet gave away pieces of information on a flown-tested reentry vehicle, identified as a CALT project which I suspect to be Aotian-1. I did not grab this information on time, and here is the (empty) available URLs:

http://www.fjgzw.gov.cn/ar/20140124000003.htm

It seems that the official website of the Chinese city of Zhangzhou (漳州) released some sort of statement implying that a "high speed autonomous landing test" had been performed. The reason why the city would have released any such information was (partly) to boast of a city-based company's achievements, implied on the project. This (yet-unidentified) company might have been in charge of designing or manufacturing the vehicle's body flaps. I'll try to check things out in this, when I have more time.

A.

PS) I am very careful here because this information comes from an only recently identified "old avatar" of the ever-talkative "Henri K." organization though under another alias, as always. So, let's see where this all goes. And for those who do not see the point of this footnote, please read the PS of my very first post in this thread to get a better contextual understanding of the picture. This is of particular relevance today.
 

antigravite

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Hi again.

Something odd happened on the French aerospace forum "FCS" (Forum de la conquete spatiale) on the Space China section wherein [Henri K] aka [ELIXIR] released what seems to be highly confusing but high-value pieces of information on the still secret Aotian program. Newcomers are urged to read carefully the footnote of my first post here in this thread to get a better understanding of the context. And be aware that, to the very best of my skills and knowledge, there is/was no such equivalent open China source discussing strategic aerospace, defence and advanced weapon systems on western forums. Some time ago, [Elixir] warned his audience he was suffering and that he would post for the last time; then he returned, then we are left in the dark…

So here we go, again:

http://www.forum-conquete-spatiale.fr/t16416-information-avion-spatial-ao-tian-1

According to [Elixir], a series of patents filed by CALT in October 23013, showcases a winged spacecraft which he relates to Ao-Tian. These patents clearly show a spacecraft structure and structural elements which could be associated to a Chinese version of X-37B, which in turn would be distinct from Shenlong.

This is old news but puzzling anyway. Until now, my strongest belief was that Aotian was a lifting body. My only guess is… I don't know and I feel a bit confused, although I do have some ideas.

I am attaching herein "as is" elements posted by [Elixir]. They really are interesting but dots still need to be connected very carefully. Something's not right. (Or I was made to make analytic mistakes, in the past which is not good.)

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