Author Topic: ISS U.S. EVA-53 - March 29, 2019  (Read 11566 times)

Offline jacqmans

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ISS U.S. EVA-53 - March 29, 2019
« on: 09/12/2018 08:59 am »
September 11, 2018
MEDIA ADVISORY M18-137

NASA to Preview Two International Space Station Spacewalks, Provide Live Coverage

Six days later, on Saturday, Sept. 29, NASA Flight Engineer Ricky Arnold will join Gerst to complete the power system refurbishment on the port truss. It will be Arnold’s sixth spacewalk.

Coverage of the spacewalks will begin on NASA TV and the agency’s website at 6:30 a.m., with both spacewalks scheduled to begin around 8 a.m. and last about six-and-a-half hours. These spacewalks will be the 213th and 214th in support of station assembly, maintenance and upgrades; and the eighth and ninth outside the station this year.

Learn more about International Space Station research, operations, and its crew at:

https://www.nasa.gov/station
« Last Edit: 10/05/2018 03:39 pm by Chris Bergin »


Online Rondaz

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #2 on: 03/06/2019 08:47 pm »
NASA astronauts to team up for first all-female spacewalk 

The ISS is set to host a history-making spacewalk in late March, International Women's Month.

BY  AMANDA KOOSER MARCH 6, 2019 9:52 AM PST

https://www.cnet.com/news/nasa-astronauts-to-team-up-for-first-all-female-spacewalk/?utm_source=reddit.com
« Last Edit: 03/16/2019 01:16 am by eeergo »

Offline centaurinasa

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #3 on: 03/22/2019 06:30 pm »

Online Joachim

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #4 on: 03/24/2019 07:46 am »
Who will wear which EMU?

Offline anik

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #5 on: 03/24/2019 02:43 pm »
Who will wear which EMU?

McClain - 3003, Koch - 3008.

Offline Targeteer

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #6 on: 03/26/2019 03:57 am »
So much for the first all female space walk...

March 25, 2019
MEDIA ADVISORY M19-021
NASA Updates Spacewalk Assignments, Announces Final Preview Briefing

With the first in a series of three spacewalks successfully completed at the International Space Station, NASA has updated astronaut assignments for the remaining two spacewalks and will preview the third in an upcoming news conference on NASA Television and the agency’s website.

NASA astronauts Nick Hague and Anne McClain conducted the first spacewalk in this series on March 22. Hague and fellow NASA astronaut Christina Koch now are preparing to conduct the second spacewalk Friday, March 29, during which they will continue work started on the first spacewalk to install powerful lithium-ion batteries for one pair of the station’s solar arrays.

Koch had been scheduled to conduct this spacewalk with astronaut McClain, in what would have been the first all-female spacewalk. However, after consulting with McClain and Hague following the first spacewalk, mission managers decided to adjust the assignments, due in part to spacesuit availability on the station. McClain learned during her first spacewalk that a medium-size hard upper torso – essentially the shirt of the spacesuit – fits her best. Because only one medium-size torso can be made ready by Friday, March 29, Koch will wear it.

Mission experts previewed the tasks for the first two spacewalks during a March 19 news conference.

McClain now is tentatively scheduled to perform her next spacewalk – the third in this series – on Monday, April 8 with Canadian Space Agency astronaut David Saint-Jacques. Assignments for this spacewalk will be finalized following completion of the second spacewalk.

Experts will discuss the work to be performed on the April 8 spacewalk during a news conference at 2 p.m. EDT Tuesday, April 2, at NASA’s Johnson Space Center in Houston. Live coverage of the briefing and spacewalks will air on NASA Television and the agency’s website.

Media wishing to attend the briefing in person must request credentials from the Johnson newsroom at 281-483-5111 no later than 4 p.m. Monday, April 1. Media interested in participating by phone must contact the newsroom by 1:45 p.m. April 2.

Participants in the briefing will be:

    Kenneth Todd, International Space Station manager for Operations and Integration
    Rick Henfling, spacewalk flight director
    John Mularski, lead spacewalk officer

McClain and Saint-Jacques will lay out jumper cables between the Unity module and the S0 truss, at the midpoint of the station’s backbone, during their April 8 spacewalk. This work will establish a redundant path of power to the Canadian-built robotic arm, known as Canadarm2. They also will install cables to provide for more expansive wireless communications coverage outside the orbital complex, as well as for enhanced hardwired computer network capability.

Live coverage of both spacewalks will begin at 6:30 a.m., and each is expected to last about 6.5 hours. The March 29 spacewalk is scheduled to start at 8:20 a.m., while the April 8 spacewalk is set to start at 8:05 a.m.

These will be the 215th and 216th spacewalks in the history of International Space Station assembly and maintenance. During the first spacewalk of the series, on March 22, McClain became the 13th woman to perform a spacewalk. Koch will become the 14th on March 29.

Learn more about the spacewalks and the International Space Station at:

https://www.nasa.gov/station
« Last Edit: 03/26/2019 03:59 am by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online Joachim

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #7 on: 03/26/2019 05:35 am »
The same question:
Who will wear which EMU now?

Offline rosbif73

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #8 on: 03/26/2019 10:25 am »
McClain learned during her first spacewalk that a medium-size hard upper torso – essentially the shirt of the spacesuit – fits her best. Because only one medium-size torso can be made ready by Friday, March 29, Koch will wear it.

I'm having difficulty grasping how this HUT sizing issue could have arisen, and why it wasn't anticipated. The only explanation I can come up with is that McClain was expected to need a Large, presumably did wear a Large for EVA-52, but realised during the EVA that a Medium would have suited her better. Does that seem plausible?

« Last Edit: 03/26/2019 10:26 am by rosbif73 »

Offline anik

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #9 on: 03/26/2019 10:52 am »
The same question:
Who will wear which EMU now?

Hague - 3006, Koch - 3008
McClain - 3008, Saint-Jacques - 3006

Offline anik

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #10 on: 03/26/2019 10:53 am »
I'm having difficulty grasping how this HUT sizing issue could have arisen, and why it wasn't anticipated. The only explanation I can come up with is that McClain was expected to need a Large, presumably did wear a Large for EVA-52, but realised during the EVA that a Medium would have suited her better. Does that seem plausible?

McClain used EMU 3008 with Medium size's HUT during EVA-52. She planned to use EMU 3003 with Large size's HUT during EVA-53. Now she will use EMU 3008 with Medium size's HUT during EVA-54.
« Last Edit: 03/26/2019 10:56 am by anik »

Offline SWGlassPit

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #11 on: 03/26/2019 12:46 pm »
McClain learned during her first spacewalk that a medium-size hard upper torso – essentially the shirt of the spacesuit – fits her best. Because only one medium-size torso can be made ready by Friday, March 29, Koch will wear it.

I'm having difficulty grasping how this HUT sizing issue could have arisen, and why it wasn't anticipated. The only explanation I can come up with is that McClain was expected to need a Large, presumably did wear a Large for EVA-52, but realised during the EVA that a Medium would have suited her better. Does that seem plausible?

That's pretty close to what's going on.  Only difference is that I wouldn't say that she "needed" a large so much as she "could" use a large.  Her last EVA indicated that a large wasn't going to work.  Suits are sized on the ground, but things fit a little differently on orbit, and sometimes there are surprises.

Offline Nicolas PILLET

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #12 on: 03/26/2019 05:18 pm »
McClain used EMU 3008 with Medium size's HUT during EVA-52. She planned to use EMU 3003 with Large size's HUT during EVA-53. Now she will use EMU 3008 with Medium size's HUT during EVA-54.

So, she will still use a Medium size HUT ?
Nicolas PILLET
Kosmonavtika : The French site on Russian Space

Online Rondaz

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #13 on: 03/26/2019 05:57 pm »
Spacewalkers Swapping Places; Crew Studies Brain and Muscles

Mark Garcia Posted on March 26, 2019

A pair of astronauts are trading places on the next two spacewalks as the Expedition 59 crew continues upgrades and maintenance outside of the International Space Station. The orbital residents are also conducting space research to improve life for humans on and off Earth.

NASA announced Monday that Flight Engineer Nick Hague is joining fellow NASA astronaut Christina Koch on this Friday’s spacewalk. The duo will continue swapping old nickel-hydrogen batteries with new lithium-ion batteries on the station’ Port-4 truss structure. Hague and astronaut Anne McClain performed the exact same work last week on the other side of the truss structure.

Hague is swapping places with McClain this Friday due to a spacesuit-sizing issue. McClain is tentatively planned to go outside on an April 8 spacewalk with Canadian Space Agency astronaut David Saint-Jacques. The spacewalkers will install truss jumpers to provide secondary power to the Canadarm2 robotic arm.

McClain and Hague successfully installed new lithium-ion batteries during a spacewalk on March 22. Ground teams checked out the power channel immediately after the spacewalk with no issues. Over the weekend, attempts to recharge one of the batteries were unsuccessful. Engineers on the ground are continuing to identify the cause of the issue and explore possible solutions. There has been no impact to standard space station operations.

Science work is always ongoing aboard the orbital lab with the crew researching blood flow to the brain and muscle adaptation in space.

Hague spent a couple of hours this morning in the Kibo lab module measuring his arterial blood pressure using waveform data. The results will inform the Cerebral Autoregulation experiment that observes the brain’s blood vessels in microgravity.

Hague then joined Koch and collected leg, shoulder and back measurements for the Myotones muscle study in the Columbus lab module. Results could improve muscle rehabilitation techniques on Earth and in space.

https://blogs.nasa.gov/spacestation/2019/03/26/spacewalkers-swapping-places-crew-studies-brain-and-m...

Offline anik

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #14 on: 03/26/2019 08:41 pm »
McClain used EMU 3008 with Medium size's HUT during EVA-52. She planned to use EMU 3003 with Large size's HUT during EVA-53. Now she will use EMU 3008 with Medium size's HUT during EVA-54.

So, she will still use a Medium size HUT ?

Sure.

NASA said: We’ve seen your tweets about spacesuit availability for Friday’s spacewalk. To clarify, we have more than 1 medium size spacesuit torso aboard, but to stay on schedule with @Space_Station upgrades, it’s safer & faster to change spacewalker assignments than reconfigure spacesuits.

So one variant: resized M-size HUT will be attached to PLSS 3008 (read EMU 3008) for McClain and Koch’s M-size HUT will be attached to PLSS 3006 (read EMU 3006) for Saint-Jacques.

Another variant: Koch’s M-size HUT will be attached to PLSS 3008 for McClain and Hague’s L-size HUT will be attached to PLSS 3006 for Saint-Jacques.

One more variant: :)
« Last Edit: 03/26/2019 09:00 pm by anik »

Offline AbeJ

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #15 on: 03/27/2019 12:02 am »
I'm still confused - can someone explain what it take to "reconfigure a spacesuit" that makes it faster and safer to avoid doing it?  It sounds like swapping torsos is no big deal, but I must be missing something.

Online mlindner

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #16 on: 03/27/2019 03:00 am »
The amount of media hype going around this spacewalk is nonsensical, and frankly borderline sexist. I'm really getting tired of this nonsense. People need to listen to Anne McClain dismissing this nonsense more. It doesn't matter what your gender is. Spacewalks aren't harder, easier, nor more impressive, nor less impressive for women.

Reporting on this spacewalk cancelation is going on at SpaceNews, NPR, CNN (3 articles in under 24 hours!), New York Times, NBC, Jalopnik, CBS, Washington Post, The Guardian, Politico, Ars Technica, and several local papers in the various space states and the list goes on.
« Last Edit: 03/27/2019 03:06 am by mlindner »
Internal combustion engine in space. It's just a Bad Idea.TM - Robotbeat

Offline Targeteer

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #17 on: 03/27/2019 03:09 am »
Would have been better if an actual astronaut had participated but informative...

https://www.cnn.com/2019/03/26/us/nasa-spacesuits-trnd/index.html
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online mlindner

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #18 on: 03/27/2019 03:12 am »
Would have been better if an actual astronaut had participated but informative...

https://www.cnn.com/2019/03/26/us/nasa-spacesuits-trnd/index.html

CNN couldn't find someone more educated about spaceflight to ask questions? Luckily the NASA people filled in information without being asked.
« Last Edit: 03/27/2019 03:13 am by mlindner »
Internal combustion engine in space. It's just a Bad Idea.TM - Robotbeat

Offline anik

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Re: ISS U.S. EVA-53 - March 29, 2019
« Reply #19 on: 03/27/2019 11:20 am »
Another variant: Koch’s M-size HUT will be attached to PLSS 3008 for McClain and Hague’s L-size HUT will be attached to PLSS 3006 for Saint-Jacques

I was told that this variant will be used.

In EVA-54 McClain will use EMU 3008 with M-size's HUT (she used it on EVA-52 and Koch will use it on EVA-53). And Saint-Jacques will use EMU 3006 with L-size's HUT (Hague will use it on EVA-53).

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