China's Space Program News Thread

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delft

Brigadier
East Pendulum has a story about a ten year CASIC project to develop a two stage space plane with the first stage having combined turbo jet / scram jet propulsion:
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No promise that will be deployed, just a very deep look into the possibilities if I understand the article correctly.
 
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Hendrik_2000

Lieutenant General
East Pendulum has a story about a ten year CASIC project to develop a two stage space plane with the first stage having combined turbo jet / scram jet propulsion:
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No promise that will be deployed, just a very deep look into the possibilities if I understand the article correctly.

It is just study here is the translation
CASIC, one of China's two national aerospace groups, appears to have taken a major step forward in the development of its spacecraft called " Teng Yun " (腾云). In any case, it was officially announced
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at the international conference Global Space Exploration 2017 (GLEX 2017), which is held from 6 to 8 June in Beijing.

According to LIU Shi Quan (刘石泉), the reusable spacecraft - with take-off and horizontal return - achieved "significant" progress and the project has already completed ground testing for several of its key technologies, Including the propulsion system.

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The model of the Tengyun spacecraft presented at the GLEX 2017 conference (Images: CCTV-13)

One can also have another view of this space plane "Teng Yun" from 00:30 of this video -

The "Teng Yun" spacecraft is part of one of the five strategic projects launched by CASIC in 2016 in the field of commercial aerospace. The Chinese giant, with nearly 150,000 employees in the country, has decided to invest more than 100 billion yuan (more than 13 billion euros) over 10 years in these 5 projects as well as a new family of launchers With solid propellant.

A new aerospace design and construction base will be built in Wuhan City as part of these projects, which also include solar drones, aerostats, Wi-Fi mini-satellites and the network of connected objects, as well as Fast launchers and rockets with electromagnetic launch.

As for the "Teng Yun" project, its objective is to build and fly by 2030 a RLV (Reusable Launch Vehicle) consisting of two "stages" - an orbiter device similar to a mini space shuttle, and a carrier itself, Even recoverable.

The latter, equipped with a Turbine Based Combined Cycle (TBCC) combined propulsion system, which consists of coupling a turbojet reactor for the horizontal takeoff phase and first acceleration, and a ramjet or scramjet to achieve speed and speed The necessary altitude about 30 to 40 km from the ground, will release the orbiter which will continue its course with its own rocket engines.

Once the "parcel" is delivered, the carrier will return to the ground by posing as a normal plane. CASIC aims at the objective of a lifetime of 100 cycles for the orbiter and the wearer.

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The headgear of the Kuaizhou rockets of the CASIC group

The elements made public today indicate that the project has just completed, at the end of 2016, its phase of technical demonstration which allows to choose the architecture and the final configuration of the future space plane.

The tests referred to by LIU should therefore be of this nature, in particular at the level of the TBCC engine, and not elaborate products.

The project is then planned to carry out a series of ground simulation on the TBCC engine before conducting flight tests by 2020.

CASIC intends to complete the development of the main components by 2025, and to carry out the first experimental flight in 2030.

It should be noted that "Teng Yun" is not the first and only spacecraft currently under development in China, and it is unlikely that the one chosen by the Chinese State as the spacecraft second generation.

Indeed, the CALT Institute (China Academy of Launch Vehicle Technology), builder of the Longue Marche rockets and subsidiary of another large Chinese aerospace group CASC ( without I ), also built a small experimental shuttle Called " Ao Tian 1 ", which, in the strict sense of the word, can be classified in the RLV category rather than a space plane (nor for Teng Yun because the orbiter can not take off horizontally).

Another mini-shuttle project, known as " Shenlong " (Dragon Divine), designed this time by the 611 Chengdu Institute - a subsidiary of the Chinese aviation group AVIC and designer of fighter jets and drones like J-10 , J-20 or Wing Loong and EA-03 - has also conducted several dropping tests in recent years. The project was codenamed 863-706 under the 863 Program.

We have very briefly mentioned these two projects in our dossier "
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" last year.

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The old technical proposals on the future Chinese RLV
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Shenlong (top right) and Ao Tian 1 (bottom right)

If our information is accurate, it would be the 611 Chengdu Institute, although an actor in the aeronautics sector, who finally won the contract financed by the Chinese government for the development of the future spacecraft (or at least one RLV).

The objective is to enable the country to have a low-cost, reusable space access tool capable of being relaunched in less than 48 hours after the previous return to Earth and ready for take-off with a maximum of 8 hours preparation.

And the new code name of this state project, 921-706, is very revealing, because the figure 921 actually corresponds to Program 921, that is to say the Chinese manned flight program which was launched in 1992.

It may be pointed out that at the time, between 1987 and 1992, before the 921 Program was officially launched, six technical proposals were studied and compared in the framework of Project 863-204.

If one of them, proposed by the CASC Institute of the CASC group, became the Chinese Shenzhou man-made ship that we know today, there was actually another candidate who looks like the "Teng Yun" project of CASIC of today, even if the latter would probably be a "private" project.

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The different spatial transport configurations studied in project 863-204, between 1987 and 1992.

To be continued.
 

visitant

New Member
Registered Member
It is just study here is the translation
CASIC, one of China's two national aerospace groups, appears to have taken a major step forward in the development of its spacecraft called " Teng Yun " (腾云). In any case, it was officially announced
Please, Log in or Register to view URLs content!
at the international conference Global Space Exploration 2017 (GLEX 2017), which is held from 6 to 8 June in Beijing.

According to LIU Shi Quan (刘石泉), the reusable spacecraft - with take-off and horizontal return - achieved "significant" progress and the project has already completed ground testing for several of its key technologies, Including the propulsion system.

Please, Log in or Register to view URLs content!

The model of the Tengyun spacecraft presented at the GLEX 2017 conference (Images: CCTV-13)

One can also have another view of this space plane "Teng Yun" from 00:30 of this video -

The "Teng Yun" spacecraft is part of one of the five strategic projects launched by CASIC in 2016 in the field of commercial aerospace. The Chinese giant, with nearly 150,000 employees in the country, has decided to invest more than 100 billion yuan (more than 13 billion euros) over 10 years in these 5 projects as well as a new family of launchers With solid propellant.

A new aerospace design and construction base will be built in Wuhan City as part of these projects, which also include solar drones, aerostats, Wi-Fi mini-satellites and the network of connected objects, as well as Fast launchers and rockets with electromagnetic launch.

As for the "Teng Yun" project, its objective is to build and fly by 2030 a RLV (Reusable Launch Vehicle) consisting of two "stages" - an orbiter device similar to a mini space shuttle, and a carrier itself, Even recoverable.

The latter, equipped with a Turbine Based Combined Cycle (TBCC) combined propulsion system, which consists of coupling a turbojet reactor for the horizontal takeoff phase and first acceleration, and a ramjet or scramjet to achieve speed and speed The necessary altitude about 30 to 40 km from the ground, will release the orbiter which will continue its course with its own rocket engines.

Once the "parcel" is delivered, the carrier will return to the ground by posing as a normal plane. CASIC aims at the objective of a lifetime of 100 cycles for the orbiter and the wearer.

Please, Log in or Register to view URLs content!

The headgear of the Kuaizhou rockets of the CASIC group

The elements made public today indicate that the project has just completed, at the end of 2016, its phase of technical demonstration which allows to choose the architecture and the final configuration of the future space plane.

The tests referred to by LIU should therefore be of this nature, in particular at the level of the TBCC engine, and not elaborate products.

The project is then planned to carry out a series of ground simulation on the TBCC engine before conducting flight tests by 2020.

CASIC intends to complete the development of the main components by 2025, and to carry out the first experimental flight in 2030.

Great summary, Hendrik! I guess the series combined propulsion system ground test taken recent years is part of TengYun project's carrier. Some articles claim China will conduct a flying test of this combined propulsion system by end of 2017, it seems this info is officially released on a recent conference.

20170528161701579.jpeg


IMO the combined propulsion system is as interesting as the whole TengYun, it's the basis of future hypersonic aircraft.
 

Hendrik_2000

Lieutenant General
Here is the explanation from Henri K blog


One of the biggest manufacturers of space rockets in China, CALT (China Academy of Launch Vehicle Technology), which designs a large part of the launchers of the Long March family, revealed several of its reusable launcher projects at the international conference GLEX 2017.

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to
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, technologies to recover and reuse the (first?) Stage of launcher are being studied. This includes parachute landing and propulsion landing, some key developments of which have been completed.

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Presentation of CALT to GLEX 2017.

Although no details have been given this time, the deployable pitcher that can be seen on the presentation seems to have evolved from a project known since last year.

At the International Astronautical Congress 2016 held in Guadalajara, Mexico, WANG Xiao Wei, a researcher at the CALT Institute, has already presented two "small" reusable launcher projects in the course of studies. These partially reusable launchers are mainly targeted at the launch requirements of satellites weighing less than one ton in the Sunsynchronous Orbit (SSO).

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The two partially reusable rockets being studied at CALT (Image: CALT)

The positioning of these reusable Chinese launchers in the market therefore seems to be very different from that of Falcon 9 by SpaceX. It also seems to suggest that for new, larger Chinese launchers , such as CZ-7 (LEO 13,5t) and CZ-5 (GTO 13t, LEO 23t), the frequency of firing would not justify the application of Reuse concept.

According to IAC 2016, CALT engineers have so far evaluated three different methods for recovering the stages of a rocket, the two previously mentioned, plus the one that consists of landing horizontally Reusable parts, as planned by Airbus Defense & Space in its Adeline project ("ADvanced Expendable Launcher with INnovative Engine Economy").

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The Adeline Project of the Airbus Group (Image: Airbus Defense & Space)

The Chinese study is based mainly on four criteria that directly affect the economic performance of a reusable launcher: technological difficulty, repercussions on the design of traditional embedded systems, loss of useful carrying capacity, and Difficulty in finding the parts recovered after the landing of the latter.

For instance, CALT estimates that there would be a loss of less than 10% in capacity if the recovery is carried out by uncontrolled parachuting (which therefore does not return to the launch site and requires A search and recovery operation on the ground).

This figure would rise to more than 30% for controlled parachuting, 40% for a vertical propulsion landing such as Falcon 9, or up to 70% for a geostationary transfer mission.

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The comparison of the 3 methods of rocket recovery (Image: CALT)

As for the horizontal return method, the loss in capacity would always be greater than the first two methods according to their estimates, which explains why CALT did not mention this route during its presentation to GLEX this year.

And while the Chinese seem to have lagged behind in terms of their US and European counterparts, the number of reusable launcher R & D publications shows that China was very interested in the economic potential of the reusable launcher concept. Partial or total reuse of rockets.

Of the 426 publications published since 1989 (Census not exhaustive), CALT is at the top of the list with 53 documents and patents - mostly focused on evaluating the lifecycle cost of a reusable launcher, trajectory design, Materials, propulsion as well as post-recovery inspection automation methods - followed by NUDT University of the Chinese Army (22) and the Northwestern Polytechnic University (18).


The number of publications in China on reusable launcher technologies

The figures show that several Chinese space propulsion engineering firms have also embarked on the search for a reusable engine.

For example, CASC's No. 6 Academy, which specializes in the design of liquid propellant engines, has already exhibited a LOX / Methane engine at the last Zhuhai Air Show. The first test of this engine, reusable 50 times and designed specifically for this type of reusable launcher, was successfully completed in 2013.

As for the tests mentioned by CALT, it is known that their teams have already carried out several parachute recovery tests, one of which took place in late November 2015 when a reduced first-stage mock-up of a launcher was used.

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