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CSS/Tiangong EVA-2 - August 20, 2021 (UTC)
by
Galactic Penguin SST
on 17 Aug, 2021 08:20
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So after a long time of waiting here's an official message right now that the 2nd CSS spacewalk will occur "soon".
I don't know how soon is "soon" but it might be prudent to start checking after midnight UTC from tomorrow onward.
https://mp.weixin.qq.com/s/QLn29D5zHgdnEusRlNjZpw
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#1
by
Conexion Espacial
on 18 Aug, 2021 02:08
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CASC posted on its weibo account: "Prepare to refuel for the second outing"
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#2
by
Galactic Penguin SST
on 19 Aug, 2021 13:36
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#3
by
whiztech
on 20 Aug, 2021 01:15
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Seems like CGTN will do a live stream
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#4
by
Conexion Espacial
on 20 Aug, 2021 01:16
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They inform me that the two astronauts have already gone into space.
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#5
by
Conexion Espacial
on 20 Aug, 2021 02:17
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Some images of the transmission, at this moment the two astronauts are putting on their space suits, but this was almost an hour ago
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#6
by
Hungry4info3
on 20 Aug, 2021 02:22
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Some images of the transmission, at this moment the two astronauts are putting on their space suits, but this was almost an hour ago
That was from the first EVA -- note the 7月4日.
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#7
by
Conexion Espacial
on 20 Aug, 2021 02:27
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CCTV 13 reports from the mission control that the spacewalk started at 00:45 UTC.
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#8
by
Hungry4info3
on 20 Aug, 2021 02:40
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The objectives of this EVA are to raise another panoramic camera (panoramic camera D) and install some pumps on the exterior of Tianhe. One of the Taikonauts are currently on the end of the arm, positioned on the starboard side of Tianhe where the pump will be placed.
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#9
by
Hungry4info3
on 20 Aug, 2021 02:42
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Looks like both of them are at Tianhe starboard, and are ahead of schedule.
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#10
by
DwightM
on 20 Aug, 2021 02:49
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It's Nie Haisheng (red stripes) and Liu Boming (blue stripes) outside this time.
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#11
by
Conexion Espacial
on 20 Aug, 2021 03:02
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Some times, although they are not yet precise:
00:23-00:38 UTC - Hatch opened
00:38-00:45 UTC - First astronaut left
±01:45 UTC - The astronaut secures himself to the robotic arm.
(I will be updating them if more information comes out)
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#12
by
Conexion Espacial
on 20 Aug, 2021 03:08
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The spacesuits are signed
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#13
by
GELORD
on 20 Aug, 2021 03:15
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#14
by
Hungry4info3
on 20 Aug, 2021 03:18
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The extended pump assembly has been successfully installed. On to panoramic camera D. 40 minutes ahead of schedule.
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#15
by
Conexion Espacial
on 20 Aug, 2021 03:44
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The lifespan of these spacesuits is 15 uses per 8 hours used.
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#16
by
Josh_from_Canada
on 20 Aug, 2021 04:00
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The lifespan of these spacesuits is 15 uses per 8 hours used.
Using that knowledge I'd say it's safe to assume that the new suits will come up on future Tianzhou flights while the ones on orbit would be discarded of with the Tianzhou.
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#17
by
gemmy0I
on 20 Aug, 2021 04:34
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The lifespan of these spacesuits is 15 uses per 8 hours used.
Using that knowledge I'd say it's safe to assume that the new suits will come up on future Tianzhou flights while the ones on orbit would be discarded of with the Tianzhou.
Indeed. This would be consistent with the
modus operandi for the Russian Orlan suits the Chinese suits are based on: sent up on Progress, used until they wear out, and then discarded.
15 uses is on par with the
historical performance of Orlan suits; only two (Orlan-MK No. 4 and 6) have ever exceeded 15, and they only went to 16 and 17. Most likely they were originally rated for 15 but approved for a life extension based on observed better-than-average performance. (Technically they could be used again beyond 16/17, because they're the two older suits still retained on the ISS as backups; but unless there's a problem with the newer MKS suits they should see no further use.) Notably, their stablemate, Orlan-MK No. 5, was retired after 13 uses, supporting the idea that they were rated for 15 and some of the suits just "got lucky".
15 uses is also roughly on par with the US EMU suits if you count them as "new" each time they're sent back to Earth and refurbished. As with the Orlans, some have been extra successful and seen more than 15 uses (they seem to be lasting especially long in recent years, probably because after so many refurbishments their components' performance is very well characterized).
Given that China does not yet have a vehicle that can return significant amounts of cargo to the ground, it would make sense for them to not plan on refurbishing their first round of suits. That may change when they introduce their next generation reusable crew/cargo capsule. That said, it may not make sense for them to refurbish spacesuits for a while even if they can return them to the ground for inspection. If they keep them in serial production, they have the opportunity to introduce upgrades and improvements with each new generation. Whereas if they build a "fleet" and commit to refurbishing them, they risk getting stuck in the situation the U.S. is in right now, where our spacesuits are all 30-40 years old and we've "lost" the capability to make more and have to start from scratch because we shut the line down years ago.
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#18
by
Conexion Espacial
on 20 Aug, 2021 04:38
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CCTV-13 reports that the astronauts approached the hatch to pick up the panoramic camera, I did not understand if it was the two astronauts or one and if they entered the module or from outside they could take the camera.
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#19
by
Conexion Espacial
on 20 Aug, 2021 05:14
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According to the new CCTV-13 report, Liu Boming re-entered the Thiane module at around 04:40 UTC as astronaut Nie Haisheng prepares to enter.
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#20
by
DwightM
on 20 Aug, 2021 05:24
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#21
by
newfrontiers
on 20 Aug, 2021 06:01
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#22
by
Conexion Espacial
on 20 Aug, 2021 07:15
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CCTV-13 confirms that the spacewalk has already ended, the two taikonauts entered the Thiane module at 06:33 UTC, with which the spacewalk lasted 5 hours and 55 minutes since the hatch was opened at 00:38 UTC.
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#23
by
Conexion Espacial
on 20 Aug, 2021 07:27
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The Shenzhou 12 mission crew has been on the space station for 3 months, this was their last spacewalk as they will return to Earth in about a month.
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#24
by
Liss
on 20 Aug, 2021 07:32
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http://www.xinhuanet.com/english/2021-08/20/c_1310138532.htmChinese astronauts out of spacecraft for second time extravehicular activities
Source: Xinhua | 2021-08-20 12:21:26 | Editor: huaxia
BEIJING, Aug. 20 (Xinhua) -- Chinese astronauts Nie Haisheng and Liu Boming had both slipped out of the space station core module Tianhe by 10:12 a.m. (Beijing Time) on Friday to conduct extravehicular activities (EVAs) for a second time, according to the China Manned Space Agency (CMSA).
Nie opened the hatch of Tianhe's node cabin at 8:38 a.m., the CMSA said.
Donning Feitian, new-generation homemade extravehicular mobility unit spacesuits that literally means "flying to space," the two astronauts have completed installing the foot restraints and extravehicular working platform on the mechanical arm, the CMSA said.
They will continue to work together to install other relevant extravehicular equipment with the aid of the mechanical arm, it said.
Astronaut Tang Hongbo has been staying inside Tianhe in cooperation with Nie and Liu for their EVAs.
The three astronauts were sent into space aboard the Shenzhou-12 spaceship on June 17. Liu and Tang completed the first EVAs during the construction of the country's space station on July 4. Enditem
Screen image taken at Beijing Aerospace Control Center on Aug. 20, 2021 shows Chinese astronaut Tang Hongbo working inside the space station core module Tianhe. (Xinhua/Tian Dingyu)
http://www.xinhuanet.com/english/2021-08/20/c_1310138838.htmChinese astronauts complete second time EVAs for space station construction
Source: Xinhua | 2021-08-20 15:04:20 | Editor: huaxia
BEIJING, Aug. 20 (Xinhua) -- Chinese astronauts have completed the extravehicular activities (EVAs) and returned to the space station core module Tianhe, according to the China Manned Space Agency (CMSA) on Friday.
This was the second time that the astronauts conducted EVAs during the construction of the country's space station, and the CMSA declared the EVAs a complete success. Enditem
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#25
by
SciNews
on 20 Aug, 2021 10:42
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Second spacewalk begins
Successful second spacewalk
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#26
by
TALsite
on 20 Aug, 2021 13:02
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#27
by
TALsite
on 20 Aug, 2021 13:03
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Translated with DeepL:
"This real-time modeling done based on multi-sensitive parameters and computer vision is really quite impressive to reach this level of detail (although the forward alignment interface target is drawn in the wrong place?"
Figure: BACC big screen, from Xinhua News Agency
https://twitter.com/SegerYu/status/1428607351318212615?s=20
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#28
by
TALsite
on 20 Aug, 2021 13:04
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[CNSA Live] 2nd EVA spacewalk of Chinese astronauts from Tiangong Space Station 天宫空间站中国航天员第二次出舱活动直播
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#29
by
Conexion Espacial
on 21 Aug, 2021 04:13
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#30
by
Steven Pietrobon
on 21 Aug, 2021 05:30
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What's with the Soviet flag to the right of the Taikonaut?
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#31
by
Josh_from_Canada
on 21 Aug, 2021 05:32
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What's with the Soviet flag to the right of the Taikonaut?
That's not the Soviet flag, it's the flag of the Communist Party of China.
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#32
by
Conexion Espacial
on 24 Aug, 2021 10:55
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These are the cameras used by astronauts for their spacewalks. The camera on top of the helmet is a 1080P high definition camera with integrated H.264 video compression function.
