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Thread: China Space Station

  1. #301
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    The Shenzhou-12 spacecraft is being upgraded for the 1st visitors to the CSS once it is launched.

    https://gbtimes.com/shenzhou-12-chin...-space-station

    A team belonging to the China Academy of Space Technology (CAST) is preparing upgrades for China's next human spaceflight mission, Shenzhou-12, which will be the first to the Chinese Space Station.

    The Beijing Institute of Control Engineering (BICE), a CAST subsidiary, is working on an upgraded Guidance, Navigation and Control (GNC) system for the spacecraft.

    GNC technology controls areas including spacecraft attitude and trajectory and orientation of solar panels, much as a brain controls an animal's limbs.

    Specifically, according to Li Mingming of BICE, the challenge will be migrating the GNC used for China's automated Tianzhou cargo vessel to the crewed Shenzhou-12 spacecraft.

    The BICE-developed GNC for Tianzhou-1 allowed the craft to perform the country's first fast rendezvous and docking procedure, reducing the time needed from two days to 6.5 hours.

  2. #302
    the old one is falling to Earth and "land" by April 2018.
    http://www.bbc.com/news/science-environment-37431478
    Most of it will melt on the why down but there might pieces to dense to melt and might hit the Earth.
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  3. #303
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    The CSS will have a domestically developed active hydrogen atomic clock.

    http://news.xinhuanet.com/english/20..._136829099.htm

    The active hydrogen atomic clock will be a key equipment of China's space time frequency lab aboard the space station, according to a press release from the clock developer, a CASIC institute in Beijing.

    "The lab aims to provide more accurate and stable time frequency signals with the help of the active hydrogen atomic clock, which can improve China's BeiDou Navigation Satellite System," the release said.

    The active hydrogen atomic clock, which weighs about 40 kg, is only one-fifth of the size of a traditional hydrogen atomic clock.

  4. #304
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    China TV released footage of the Tianhe module. Enjoying seeing the views but the whole program is in Mandarin. One difference you will notice of the Chinese approach and the International Space Station is the Chinese emphasis on growing plants for food as well as to generate oxygen.

    https://gbtimes.com/tianhe-a-look-at...-space-station

    Documentary footage released by China Central Television (CCTV) has provided a glimpse of the core module for the Chinese Space Station, which could be launched around late 2019.

    The Tianhe module is the first of three 20 metric tonne modules that will make up the Chinese Space Station (CSS), along with two experiment modules to be used for a range of science objectives.

    Tianhe, which means 'heavenly harmony', was completed in the first half of 2017, but the high levels of secrecy typical of China's space activities mean that few images or details of the spacecraft have been available.

    The footage shows the module, including views of the living and control compartments, and the docking hub under development at the Assembly, Integration and Testing (AIT) Center in Tianjin.

  5. #305
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    Quote Originally Posted by astrotimer View Post
    the old one is falling to Earth and "land" by April 2018.
    http://www.bbc.com/news/science-environment-37431478
    Most of it will melt on the why down but there might pieces to dense to melt and might hit the Earth.
    ESA now estimates it will fall to earth round March 18 to around April 12 this year, with the caveat that this is highly variable.

    The European Space Agency’s Space Debris Office has issued an updated estimate for the uncontrolled atmospheric reentry of China's 8.5 tonne Tiangong-1 space lab.

    The current estimated window for Tiangong-1 to reenter the Earth's atmosphere is around March 18 to around April 12 this year, with the caveat that this is highly variable.

    ESA's Space Debris Office, based at the ESOC mission control centre in Darmstadt, Germany, notes that determining a precise date and location will not be possible, due to the variations and fluctuations of the Earth's atmosphere.

  6. #306
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    Quote Originally Posted by selvaarchi View Post
    ESA now estimates it will fall to earth round March 18 to around April 12 this year, with the caveat that this is highly variable.
    It is now one week later - March 25 to April 17.

    https://gbtimes.com/new-tiangong-1-r...-space-program

    "New analysis of the orbit of Tiangong-1 by ESA's Space Debris Office indicates a new estimated window of March 25 to April 17 for the uncontrolled atmospheric reentry of China's 8.5 tonne space lab."

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  7. #307
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    UAE Space Agency and the International Astronomical Centre, IAC are now monitoring Tiangong-1.

    http://menafn.com/1096479559/UAE-Spa...ace-Laboratory

    The UAE Space Agency and the International Astronomical Centre, IAC, have announced a joint campaign to monitor China's Tiangong-1 Space Laboratory as it falls back to Earth. The fall is expected to take place in mid-March in areas between 43 degrees north and south latitude, which include most of the Arab region.

    The UAE Space Agency confirmed that the lab will be vaporised upon re-entry, prior to reaching the ground. The uncontrolled fall will pose no danger to Earth and will not impact any of the populated areas. Although there is a chance some debris may reach the ground, it will be falling into the sea and will not impact lives or human activities.

  8. #308
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    http://www.satview.org/?sat_id=37820U

    The map above shows the location of the possible reentry of the space junk TIANGONG 1 (37820U) predicted by modeling of orbital evolution until the fragment or satellite reaches the altitude of nominal burst.
    According to the forecast made by Satview.org, the object's reentry will occur in Monday, 16 Apr 2018 at 15:59 UTC, above the coordinates shown on map.

    The second map shows the location of the reentry like predicted by USstratcom (United States Strategic Command).

    (the above image is from the satview.org site, not a locally stored copy, so it should update when the forecast/image is updated and this page is refreshed)

  9. #309
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    The launch date of the 1st module of the Chinese Space Station has slipped to 2020. But the completion date is still 2022.

    https://gbtimes.com/launch-of-first-...-space-program

    The launch of the first module for the planned Chinese Space Station has slipped to 2020, officials from the space programme have said at the country's parliamentary sessions.

    Zhou Jianping, chief designer of China's human spaceflight programme and a member of the national political consultative conference, or CPPCC, which forms part of the country's ongoing annual parliamentary sessions, told China News Service on Monday that the core module, 'Tianhe', will launch 'around 2020'.

    The Tianhe module will be the core of the three-module Chinese Space Station (CSS), and will be joined by two experiment modules, named Wentian and Mengtian, by around 2022.

  10. #310
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    China is testing out the robotic arm which will help build the space station as well as help with receiving supplies. The report gives a short video of its testing and then goes on to show participants taking part in the Moon base simulation. The dialog is in Chinese.

    https://gbtimes.com/robotic-space-ar...-space-program

    A recent documentary has given a glimpse of the mechanical arm that will be used in Earth orbit for assembling the Chinese Space Station (CSS), as well as moving supplies and equipment.

    The mechanical arm will apparently be used to assemble the three 20-metric-tonne modules of the CSS complex, utilising a common docking hub.

  11. #311
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    If this comes about, it will be a big boost for the Chinese Space Station.

    https://www.popularmechanics.com/spa...collaboration/

    Last month Russia’s space agency, Roscosmos State Corporation, began work on a contingency plan that would reshape its future in space exploration. The country could shift its human spaceflight cooperation from the U.S. to China, sources within Roscosmos told Popular Mechanics. One possible scenario includes Roscosmos exiting the International Space Station program early.

    Russian experts were instructed to put forward ideas by March 15, including concepts for potential contributions to the planned Chinese space station along with a joint Russian-Chinese plans to send humans to the Moon.

  12. #312
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    I may be confused, the news i heard is that the chinese station is on its way back with unknown landing site?
    sicut vis videre esto
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  13. #313
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    Quote Originally Posted by profloater View Post
    I may be confused, the news i heard is that the chinese station is on its way back with unknown landing site?
    That is their 1st space station (TIANGONG 1). The 2nd one (TIANGONG 2) is still up there and working. The one the article was about is the final Chinese Space Station which will only start to be built in 2020 with the launch of the 1st module. The other two modules will follow in the next 2 years to give a fully operational station in 2022.

  14. #314
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    Quote Originally Posted by selvaarchi View Post
    That is their 1st space station (TIANGONG 1). The 2nd one (TIANGONG 2) is still up there and working. The one the article was about is the final Chinese Space Station which will only start to be built in 2020 with the launch of the 1st module. The other two modules will follow in the next 2 years to give a fully operational station in 2022.
    Oh Thanks, all clear
    sicut vis videre esto
    When we realize that patterns don't exist in the universe, they are a template that we hold to the universe to make sense of it, it all makes a lot more sense.
    Originally Posted by Ken G

  15. #315
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    The range of dates when Tiangong-1 wight reenter is now 29 March to ~9 April.

    https://gbtimes.com/tiangong-1-reent...april-9-by-esa

    A new estimate for the orbital decay of China's Tiangong-1 space lab has been released, indicating a narrowing window for atmospheric reentry.

    The latest estimate from the Space Debris Office of the European Space Agency (ESA) suggests a window for reentry of ~29 March to ~9 April.

    The office, based at the ESOC mission control centre in Darmstadt, Germany, states that the estimate is highly variable due to the complexities of modelling the atmosphere, the dynamics of the reentering object and limitations in observing the spacecraft.

  16. #316
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    Confirmation China is aiming to have their Space Station completed by 2022.

    https://america.cgtn.com/2018/03/12/...tation-in-2022

    The next frontier of China’s space exploration program – its first permanent, manned space station. It’s expected to be ready for service in 2022.

    To reach that goal, China is designing and developing a telescope and four modules.

    The core module will have docking areas for cargo ships and manned spacecraft.

    “We also have an important scientific facility — the optical module,” Zhou Jianping, chief designer for China’s space station said. “It will carry a space telescope that has a two-meter diameter lens with the same level of image resolution as the well-known Hubble telescope.”

    And, it will go a step further by offering a field of view 300 times that of the Hubble,

    Tests begin this month on a new heavy-lift rocket. It will carry crucial parts to the space station.

    Ahead of this month’s CPPCC First Session, China’s first astronaut, Yang Liwei, said the space station has been a top priority after the successful launch of Space Lab Tiangong-2.

    “China has harnessed the three fundamental technologies in space expedition: space transportation, astronaut extravehicular mission and space rendezvous,” Yang said. “It’s safe to say that we are capable of building our own space station. This year is crucial for our research work.”

    China may have the only orbiting station in space once it’s completed. It’s designed to last for at least 10 years.

    The station will likely play a major role in carrying on the functions of the International Space Station which may retire in 2024.

  17. #317
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    Quote Originally Posted by selvaarchi View Post
    The range of dates when Tiangong-1 wight reenter is now 29 March to ~9 April.
    ESA has narrowed the dates to March 30-April 6.

    https://gbtimes.com/tiangong-1-esa-r...6?cat=business

    European Space Agency scientists tracking the orbit of China's Tiangong-1 space lab have released a new estimate for atmospheric reentry of between March 30 and April 6.

    The estimate from ESA's Space Debris Office for March 15 states that the window is highly variable, due to the complexities of modelling the atmosphere, the dynamics of the reentering object and limitations in observing the spacecraft.

  18. #318
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    I just captured some pics of TIANGONG 1 passing over head at 7:56pm AEST 21 March 2018.

    TIANGONG 1 2018 03 21 19_56_19 AEST.jpg

    TIANGONG 1 2018 03 21 19_56_26 AEST.jpg

    TIANGONG 1 2018 03 21 19_56_29 AEST.jpg

  19. #319
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    Here is one image at a larger resolution with the original Photo Properties (some details removed).

    WP_20180321_19_56_26_Pro.jpg

    Photo Properties.jpg

    Note the software error in the last image, Date Created and Date modified.
    Attached Images Attached Images
    Last edited by LaurieAG; 2018-Mar-21 at 12:25 PM. Reason: clarification

  20. #320
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    Quote Originally Posted by selvaarchi View Post
    The range of dates when Tiangong-1 wight reenter is now 29 March to ~9 April.
    It is now March 31+- 3 days.

    https://www.popularmechanics.com/spa...date-march-31/

    My latest #reentry estimate for #Tiangong1:
    31 March +- 3 days
    The geomagnetic storm of yesterday does seem to have given it a bump.@SSC_NL

  21. #321
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    China is now posting daily updates on the orbit of Tiangong-1 space lab.

    https://gbtimes.com/china-is-now-pro...-of-tiangong-1

    China's human spaceflight office is now releasing daily updates on the orbit of the doomed Tiangong-1 space lab, which is currently losing around 2 km of altitude daily and expected to reenter the Earth's atmosphere in the next few weeks.

    According to the March 18 notice issued by the China Manned Space Agency (CMSA) Tiangong-1 via its website, Tiangong-1 was orbiting with a perigee, or closest approach to the Earth, of 227.3 km and an apogee of 240.4 km, with an average altitude of about 233.8 km.

    The orbit is inclined by 42.65 degrees, which reveals how far north and south of the equator the spacecraft passes during its orbit, and the area of the Earth debris not burned up on reentry could fall.

  22. #322
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    I just captured another set of pics of TIANGONG 1 passing over head at 7:21pm AEST 23 March 2018. Satview said 7:20pm but they're 1 minute fast. Same position as yesterday.

    Unfortunately the optics must be slightly different in Portrait mode compared with Landscape mode in the previous pics as this was the only good one. The others seemed like the camera was trying to stabilise the image.

    AEST 2018 03 23 19_21_03 ZOOM.jpg

    AEST 2018 03 23 19_21_03.jpg

    That was a straight crop in Windows Paint too and CQ changed the orientation to Landscape when I uploaded, that's why the line goes in different directions in each pic.
    Last edited by LaurieAG; 2018-Mar-23 at 09:54 AM. Reason: fix date

  23. #323
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    Expect almost daily reports on Tiangong-1 as it approaches its D day.

    https://gbtimes.com/tiangong-1-reent...t-esa-estimate

    The latest estimate for the fall of China's Tiangong-1 space lab has narrowed the window down to between March 30 and April 3, with most of the spacecraft to burn up on reentry.

    The estimate, issued by the European Space Agency's Space Debris Office on March 22, states that the window, while refined, is highly variable, due to the complexities of modelling the atmosphere, the dynamics of the reentering object and limitations in observing the spacecraft.

    A period of heightened solar activity, for example, would influence the Earth's atmosphere and could see Tiangong-1 and other spacecraft lose altitude quicker than normal.

    With Tiangong-1 travelling at around 17,000 miles per hour, or close to 8 kilometres every second, it is impossible to give accurate estimates of which area of the Earth the spacecraft will reenter over, until very shortly before the event. The craft's orbit can be seen and followed here.

  24. #324
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    I just captured another pic of TIANGONG 1 starting to pass over at 6:54pm AEST 24 March 2018. Although it is a bit jumpy I was lucky to get it due to clouds. Satview had the pass from 6:58pm to 7:02pm AEST so it looks like the pass was actually around 6:53pm to 6:57pm AEST, 5 mins earlier. I have also noticed that my camera has been switching to Portrait mode as I have taken all images in Landscape mode so i will re post them below. On Friday morning I also took a series of photo's of old documents and all came out upside down. At least the times are ok. All images were taken pointing almost due west with the same camera settings at the same location.

    AEST 2018 03 24 18_54_34 ZOOM.jpg

    AEST 2018 03 24 18_54_34.jpg
    Last edited by LaurieAG; 2018-Mar-24 at 11:27 AM.

  25. #325
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    7:21pm AEST 23 March 2018 re posted images.

    AEST 2018 03 23 19_21_03 ZOOM.jpg

    AEST 2018 03 23 19_21_03.jpg

  26. #326
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    Quote Originally Posted by LaurieAG View Post
    7:21pm AEST 23 March 2018 re posted images.
    Thanks for the pictures. Only a week more before it comes down.

  27. #327
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    Quote Originally Posted by selvaarchi View Post
    Thanks for the pictures. Only a week more before it comes down.
    Maybe a bit quicker than the latest forecasts selvaarchi, as tonight's pass was 5 mins early. I did notice that the Satview projection dropped from 10d 9h 20 mins to 9d 13h 54 mins at 6:22pm AEST today 24th March 2018 so they may have noticed the change a little bit earlier than I did at 6:54pm. Pity their pass information is not linked to their data and the latest projection.

  28. #328
    It suppose to hit somewhere in Oregon in the next week.
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  29. #329
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    Quote Originally Posted by The Backroad Astronomer View Post
    It suppose to hit somewhere in Oregon in the next week.
    No way they can predict where it is going to land till very near the end.

  30. #330
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    I think I got it again tonight but I was being eaten by mosquitoes so it's a bit shaky. TIANGONG 1 passed over head around 6:30pm AEST 25 March 2018. The image was taken slightly to the south of west and almost directly overhead with the location and camera settings the same as my other photo's.

    There was no update tonight yet on Satview from USstratCom.
    China manned Space hasn't posted an update since March 22.
    The ESA forecast on March 24 said "The current estimated reentry window remains between 30 March and 2 April; this is highly variable."
    I won't be able to get a pic tomorrow night as it will be too light and further away.

    AEST 2018 03 25 18_30_15 ZOOM.jpg

    AEST 2018 03 25 18_30_15.jpg
    Last edited by LaurieAG; 2018-Mar-25 at 11:01 AM.

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