Tiangong - Chinese Space Station

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Sirius_Alpha
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Tiangong - Chinese Space Station

Post #1by Sirius_Alpha » 12.06.2021, 20:26

Tiangong_Complete.jpg
The Tiangong Space Station


China has launched a space station. Inspired by Linuxm@n's ISS models, I have begun work on a fairly detailed project to chronicle the progress of construction of this space station. This thread, like the extrasolar planets catalogue thread, will be a repository for updates to this addon. Unlike the extrasolar planets addon, I am not keeping myself under any time pressures here. Extrasolar planets remain my priority, and you can expect this project to be chronically behind schedule.

Right now, I'm expecting to release several updates to this roughly following the schedule of construction outlined in this diagram. Each step in the process is designed to fully replace all previous steps, thus like the extrasolar planet catalogue, old versions become obsolete as new ones come out. This allows me to avoid committing to a misunderstanding I invariably have had or will have regarding the functionality of some component of the space station, as well as improve its appearance as newer imagery becomes available.

This addon makes use of .ssc features that require Celestia 1.5.0 or later.

Construction of the Tiangong Space Station
Stage 1 - Tianhe Core Module (Complete 12 Jun 2021)
Stage 2 - Tianzhou 2 (Complete 02 Aug 2021)
Stage 3 - Shenzhou 12 (Complete 28 Aug 2021)
Stage 4 - Tianzhou 3
Stage 5 - Shenzhou 13
Stage 6 - Tianzhou 4
Stage 7 - Shenzhou 14
Stage 8 - Wentian Module
Stage 9 - Mengtian Module
Stage 10 - Tianzhou 5
Stage 11 - Shenzhou 15
Last edited by Sirius_Alpha on 28.08.2021, 17:26, edited 7 times in total.
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705

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Sirius_Alpha
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Post #2by Sirius_Alpha » 12.06.2021, 20:30

Stage 1 - Tianhe Core Module

Tianhe1.jpg
Tianhe Core Module


Here is the first stage of the construction of the Tiangong Space Station, the Tianhe core module. This addon shows the deployment of Tianhe in orbit - solar arrays, high-gain antenna and aft antennas.

Video preview:
https://youtu.be/kBGW4Ca1f6k

(Edit: Fixed a missing texture)
Attachments
TiangongSpaceStation.zip
Tiangong Space Station complete through Tianhe deployment.
(1.27 MiB) Downloaded 53 times
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705

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trappistplanets
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Post #3by trappistplanets » 12.06.2021, 23:54

was this the Tianhe thing you were showing me in discord DMs(i need to talk to you abotu that in PMS not here btw)?

Added after 4 minutes 53 seconds:
downloading right now
Last edited by trappistplanets on 13.06.2021, 00:21, edited 1 time in total.

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Anthony_B_Russo10
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Post #4by Anthony_B_Russo10 » 13.06.2021, 00:17

trappistplanets wrote:was this the Tianhe thing you were showing me in DMs before you blocked me (i need to talk to you abotu that in PMS not here btw)?
There is no need to bring this up in the addon thread.
Anthony B. Russo, I like Pluto. Mod of the Celestia subreddit: https://www.reddit.com/r/Celestiasoftware/
I have over 30 computers, trying to list them here would be a pain.

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trappistplanets
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Post #5by trappistplanets » 13.06.2021, 00:20

Anthony_B_Russo10 wrote:There is no need to bring this up in the addon thread.
i'll give it an edit
and chop the part your talking about out of the message

Added after 4 minutes 11 seconds:
there chopped a part of it out,
anyways to bring this back on topic, here is an image i snapped of the core module
Untitled.png
she is looking sweet!

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DaveBowman2001
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Post #6by DaveBowman2001 » 13.06.2021, 07:58

Tiangong's orbit based on TLE data below:

Code: Select all

TIANHE                 
1 48274U 21035A   21163.71654466  .00003714  00000-0  44531-4 0  9994
2 48274  41.4698 310.3899 0008869 273.5752 218.6712 15.62363322  6998

...converted into SSC (for Tianhe):

Code: Select all

   EllipticalOrbit
   {
      Epoch      2459378.21654
      Period      0.06399904581520861
      SemiMajorAxis   6758.542495043101
      Eccentricity   0.0008869000001015514
      Inclination      41.46979999999998
      AscendingNode   310.38989999999893
      ArgOfPericenter   273.57520000002086
      MeanAnomaly   218.67119999999554
   }

...the data below is for the Tiangong Space Station reference point:

Code: Select all

   EllipticalOrbit
   {
      Epoch      2459378.21654
      Period      0.06399904581520861
      SemiMajorAxis   6758.542495043101
      Eccentricity   0.0008869000001015514
      Inclination      41.46979999999998
      AscendingNode   310.38989999999893
      ArgOfPericenter   273.57520000002086
      MeanAnomaly   218.67125499999554
   }
"Open the pod-bay doors HAL"
"I'm sorry Dave, I'm afraid I can't do that"

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Sirius_Alpha
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Post #7by Sirius_Alpha » 02.08.2021, 04:08

Stage 2 - Tianzhou 2

TiangongPromo2.png


This is the next content release for the Tiangong Space Station. A number of files have been re-named, so you should delete the original add-on (all of it) and replace it with this. Do not overwrite the existing add-on, just throw the old one away, or you will get duplicated objects. This add-on extends the coverage of events from right after launch and deployment, through the deployment of the robotic arm and the arrival of the Tianzhou 2 cargo ship.

Some of the solar array segments and truss segments were given the same name originally. This created a large number of "duplicate" errors in the console. I have given them unique names to help clean that up.

Finally, my apologies about the long time in between releases. The robotic arm thing was not easy to figure out.

Video preview:
https://www.youtube.com/watch?v=gri4nGjMm-E
Attachments
TiangongSpaceStation.zip
Model of the Tiangong Space Station up to date as of when Tianzhou 2 arrived.
(1.93 MiB) Downloaded 32 times
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705

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Sirius_Alpha
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Post #8by Sirius_Alpha » 28.08.2021, 17:24

Stage 3 - Shenzhou 12

TG_Release3.png
Tiangong Space Station after the arrival of Shenzhou 12.


This is the next content release for the Tiangong Space Station. As before, you should delete or replace any previous version with this one. This add-on extends the coverage of events from the arrival of the Tianzhou 2 cargo ship through to the docking of the first crew aboard Shenzhou 12. Not a whole lot happens as far as visible space station operations - nothing interesting with the arm, etc. So I've taken some time to improve some features of the other meshes. In addition to a new Shenzhou mesh, a number of visual improvements have been made:

020_CosmeticImprovements.png
Cosmetic improvements on the Tianhe core module.


- Improved Tianhe's docking port "blade" things(?) to match those of visiting vehicles, adding the interior stringers.
- Replaced hand rails with improved, more accurate models.
- Replaced Power/Data Grapple Fixture (PDGF) with improved, more accurate model.
- Improved decals (CMS, Flag logos) - they no longer obnoxiously stick out.
- Improved appearance of Tianhe's underside.
- Improved panoramic cameras.
Attachments
TiangongSpaceStation.zip
Tiangong Space Station up to date through the arrival of Shenzhou 12.
(2.75 MiB) Downloaded 23 times
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705

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Sirius_Alpha
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Post #9by Sirius_Alpha » 29.08.2021, 15:29

DaveBowman2001 pointed out a problem with the most recent release that, quite frankly, I forgot to fix before posting it. The docking ring for Shenzhou 12 starts out ahead of the main craft. The problem seems to have been caused because the command used to create the spacecraft creates the state vector for the main craft, but not the docking ring, whose state vectors are created during flight. So the docking ring is missing the first position in the xyz file. I've fixed this issue, as well as created a separate control mode for station-keeping so that drift in three dimensions only occurs at that time rather than in the approach and docking phases. This makes the final approach look a lot better.

021_SZ12_Docking.png
Shenzhou 12 docking, with its docking ring now firmly attached.


Simply unzip this file and move the contents to the /data/ subfolder of the addon, replacing the files in there of the same name.
Shenzhou12_Trajectory.zip
Corrected Shenzhou 12 trajectory.
(18.44 KiB) Downloaded 18 times


My sincere gratitude to DaveBowman2001!
Exoplanet nerd. I maintain a monthly-updated exoplanet catalogue here:
https://celestia.space/forum/viewtopic.php?f=23&t=18705


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