Author Topic: ISS U.S. EVA-73  (Read 17803 times)

Offline dsmillman

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ISS U.S. EVA-73
« on: 03/09/2021 08:53 pm »
https://www.nasaspaceflight.com/2021/03/us-eva-73/

https://twitter.com/ChrisG_NSF/status/1370725812413009922

March 09, 2021
MEDIA ADVISORY M21-032
NASA TV to Provide Coverage as Astronauts Venture Out for Spacewalk
 

Two NASA astronauts will conduct the fifth spacewalk of the year Saturday, March 13, to complete several systems upgrades to the International Space Station. Live coverage will begin at 6:00 a.m. EST on NASA Television, the NASA app, and the agency’s website.
Expedition 64 Flight Engineers Michael Hopkins and Victor Glover are scheduled to exit the station’s Quest airlock about 7:30 a.m. for a spacewalk planned to last approximately six and a half hours.
During the spacewalk, Hopkins and Glover will vent early ammonia system jumper cables and relocate one of them near the Quest airlock in order to reconnect the jumper cable to the current cooling system, increasing its efficiency. The duo also will connect cables for the Columbus Bartolomeo payload platform, continuing work from a Jan. 27 spacewalk, and replace a cable for an amateur radio system. Additionally, the astronauts will replace a wireless antenna assembly on the Unity module, install a “stiffener” on the airlock’s thermal cover to provide additional structural integrity, and route cables to provide ethernet capabilities for two high-definition cameras on the station’s port truss, or “backbone.”
Glover will wear red stripes on his suit as extravehicular crew member 1 (EV 1) during what will be the fourth spacewalk of his career. Hopkins will be EV 2 and wear a suit with no stripes during what will be his fifth spacewalk. Hopkins will wear a high-definition camera on his helmet to provide clear views of the Columbus connectors. The mating of these connectors is one of several tasks deferred from previous spacewalks to allow astronauts to finish installing modification kits for new solar arrays set to launch later this year.
 
In November 2020, the International Space Station surpassed its 20-year milestone of continuous human presence, providing opportunities for unique technological demonstrations and research that help prepare for long-duration missions to the Moon and Mars while also improving life on Earth. To date, 242 people from 19 countries have visited the orbiting laboratory that has hosted nearly 3,000 research investigations from researchers in 108 countries and areas.
For more information about the International Space Station, including its research crew, please visit:
http://www.nasa.gov/station
-end-
« Last Edit: 03/13/2021 01:25 pm by Chris Bergin »

Offline Targeteer

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Re: ISS U.S. EVA-73
« Reply #1 on: 03/09/2021 09:05 pm »
Kate experienced a sizable water leak while servicing one of the EMUs this morning.  Apparently a loose fitting on an adapter was the culprit.  Servicing on that EMU (the forward one I think) was postponed until the adapter on the other suit could be used once it's servicing was finished.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Re: ISS U.S. EVA-73
« Reply #2 on: 03/10/2021 08:48 am »
EMU resize underway
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Re: ISS U.S. EVA-73
« Reply #3 on: 03/13/2021 06:08 am »
Soichi finally checked in from the airlock after initially getting no response from MCC-H.  They reset all the buttons on the ATU 6 and all is good.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #4 on: 03/13/2021 11:00 am »
« Last Edit: 03/13/2021 11:00 am by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #5 on: 03/13/2021 11:02 am »
Ike is getting his SAFER installed.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #6 on: 03/13/2021 11:26 am »
Both astronauts are in the crewlock, awaiting hatch closure.

And hatch closure.
« Last Edit: 03/13/2021 11:28 am by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #7 on: 03/13/2021 11:31 am »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #8 on: 03/13/2021 11:35 am »
CAPCOM Kathy Bolt turns those duties over to Andres Mogensen for the duration of the EVA.  In a quick satellite handover.
« Last Edit: 03/13/2021 11:36 am by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #9 on: 03/13/2021 11:38 am »
Polling for go/no go on depress, all looking good so far.
« Last Edit: 03/13/2021 11:40 am by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #10 on: 03/13/2021 11:42 am »
Crew is go for depress.
« Last Edit: 03/13/2021 11:42 am by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #11 on: 03/13/2021 11:47 am »
Pressure at 10 psi & dropping.  Awaiting the 5 psi pause.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #12 on: 03/13/2021 11:54 am »
At 5.0 psi.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #13 on: 03/13/2021 11:58 am »
A view from the hand-held camera Soichi is using.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #14 on: 03/13/2021 12:01 pm »
Soichi turns over the comms to Andy Mogensen.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #15 on: 03/13/2021 12:09 pm »
Still in depress.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #16 on: 03/13/2021 12:12 pm »
A look at today's tasks.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #17 on: 03/13/2021 12:14 pm »
Go to open and stow the hatch.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #18 on: 03/13/2021 12:15 pm »
Our first look outside.  The hatch is open.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #19 on: 03/13/2021 12:16 pm »
Power has been switched to battery.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #20 on: 03/13/2021 12:18 pm »
Official start to the EVA is 14 minutes past the hour.
« Last Edit: 03/13/2021 12:18 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #21 on: 03/13/2021 12:23 pm »
Mike Hopkins departs the airlock.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #22 on: 03/13/2021 12:23 pm »
Both outside now.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #23 on: 03/13/2021 12:25 pm »
Orbital sunrise, doing checks on each other's SAFER's and tethers.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #24 on: 03/13/2021 12:26 pm »
Baseline HAP and glove checks good, closing the thermal cover.

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Re: ISS U.S. EVA-73
« Reply #25 on: 03/13/2021 12:27 pm »
A quick handover, CAPCOM Mogensen is in the white shirt, middle left.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #26 on: 03/13/2021 12:28 pm »
Tools gathered, Hopper heads to P1.  Ike will be taking the APFR with him.

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Re: ISS U.S. EVA-73
« Reply #27 on: 03/13/2021 12:29 pm »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #28 on: 03/13/2021 12:30 pm »
Ike: "How does that bag look Hopper?"
Mike: "Old"
 ;D

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #29 on: 03/13/2021 12:32 pm »
Big blue thing on the right.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #30 on: 03/13/2021 12:32 pm »
Ike has camera 20.
« Last Edit: 03/13/2021 12:33 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #31 on: 03/13/2021 12:34 pm »
Hopper anchors to handrail 3651, Ike will anchor to 3652.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #32 on: 03/13/2021 12:36 pm »
Hopper has begun translating to the P6 worksite.  Ike has begun as well.

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Re: ISS U.S. EVA-73
« Reply #33 on: 03/13/2021 12:36 pm »
Hopper at the SARJ.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #34 on: 03/13/2021 12:38 pm »
A look at the batteries that garnered all the attention in earlier EVA's.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #35 on: 03/13/2021 12:39 pm »
Ike on the way.

And he's crossed the SARJ.
« Last Edit: 03/13/2021 12:39 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #36 on: 03/13/2021 12:42 pm »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #37 on: 03/13/2021 12:43 pm »
Ike is heading to WIF #27 on P6 where he'll install his APFR.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #38 on: 03/13/2021 12:44 pm »
A view from Hopper's hi-def cam.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #39 on: 03/13/2021 12:45 pm »
Ike prepping to install the APFR.

And it's in place.
« Last Edit: 03/13/2021 12:46 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #40 on: 03/13/2021 12:47 pm »
Cap is off the adapter, heading to the vent tool adapter QD.
« Last Edit: 03/13/2021 12:48 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #41 on: 03/13/2021 12:49 pm »
QD's about to mate in space.

And all set.
« Last Edit: 03/13/2021 12:49 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #42 on: 03/13/2021 12:50 pm »
The view from their work site is less than terrible.

Edit to say they had just crossed the southern part of Argentina heading over the Atlantic.
« Last Edit: 03/13/2021 12:55 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #43 on: 03/13/2021 12:53 pm »
Ike at the vent tool bag.
« Last Edit: 03/13/2021 12:54 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #44 on: 03/13/2021 12:56 pm »
« Last Edit: 03/13/2021 12:57 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #45 on: 03/13/2021 01:00 pm »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #46 on: 03/13/2021 01:01 pm »
Ike adjusting the vent so as to not spray the station with ammonia.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #47 on: 03/13/2021 01:02 pm »
Hopper will now start configuring the second adapter.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #48 on: 03/13/2021 01:03 pm »
The vent is in position.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #49 on: 03/13/2021 01:06 pm »
Ike getting into position for his next task.
« Last Edit: 03/13/2021 01:06 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #50 on: 03/13/2021 01:08 pm »
About to start venting ops.  Hopper will be opening the valve.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #51 on: 03/13/2021 01:09 pm »
Ground had said they were in orbital night, but corrected themselves.

Andy: "You may have noticed that we are in daylight."  ;)

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Re: ISS U.S. EVA-73
« Reply #52 on: 03/13/2021 01:10 pm »
Ike taking some pics as Hopper is prepping the valves for venting.
« Last Edit: 03/13/2021 01:12 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #53 on: 03/13/2021 01:12 pm »
Ike hands Hopper the release tool as we head into handover.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #54 on: 03/13/2021 01:13 pm »
Released.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #55 on: 03/13/2021 01:14 pm »
A few ammonia crystals coming out from the female end.
« Last Edit: 03/13/2021 01:15 pm by DwightM »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #56 on: 03/13/2021 01:17 pm »
Hopper: "Look at that go" as venting continues.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #57 on: 03/13/2021 01:18 pm »
Hopper: "That is more than I thought."

Edit: Venting visible below the NASA logo.
« Last Edit: 03/13/2021 01:21 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #58 on: 03/13/2021 01:18 pm »
Ground asks Hopper to verify that M3 is closed.

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #59 on: 03/13/2021 01:19 pm »

Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #60 on: 03/13/2021 01:20 pm »
M3 is closed, which is the correct configuration.  Venting continues & will for a bit more.

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Re: ISS U.S. EVA-73
« Reply #61 on: 03/13/2021 01:23 pm »
Heading into orbital night SW of the Maldives.  Venting time has concluded and EV1 says he has seen no venting for over a minute. 
PET 1h 10m

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Re: ISS U.S. EVA-73
« Reply #62 on: 03/13/2021 01:24 pm »

Offline Chris Bergin

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Offline Chris Bergin

Re: ISS U.S. EVA-73
« Reply #64 on: 03/13/2021 01:25 pm »
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Offline DwightM

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Re: ISS U.S. EVA-73
« Reply #65 on: 03/13/2021 01:26 pm »
Holding tasks as they discuss the amount of venting.

The demate venting to be clear, not the main venting.  Hopper said he had some ammonia contact his visor.
« Last Edit: 03/13/2021 01:27 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #66 on: 03/13/2021 01:30 pm »
At the end of the ops they will be inspecting both EV crewmembers for possible ammonia contact.  They're making the conservative call here as they felt the venting from the demate was "propulsive" enough to have possibly contacted their suits.  Ike said he saw no contact, but he didn't have a good view and as before, Hopper said he saw visor contact.  This just warrants further inspection, it does not affect the progress of this EVA.

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Re: ISS U.S. EVA-73
« Reply #67 on: 03/13/2021 01:31 pm »
Ike will installing the plug into the QD extender once he has the jumper.
« Last Edit: 03/13/2021 01:33 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #68 on: 03/13/2021 01:35 pm »
Another quick handover as they are making the connections for the second vent op.
« Last Edit: 03/13/2021 01:36 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #69 on: 03/13/2021 01:39 pm »
Hopper is prepping for the second vent while Ike coils the lines from the first vent before taking that back to the airlock area.
« Last Edit: 03/13/2021 01:40 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #70 on: 03/13/2021 01:41 pm »
Hopper is now configuring the valves for the second vent.

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Re: ISS U.S. EVA-73
« Reply #71 on: 03/13/2021 01:43 pm »
Venting is underway.

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Re: ISS U.S. EVA-73
« Reply #72 on: 03/13/2021 01:44 pm »
Hopper checking his gloves after the valve work.  Reports black smudge on the fingertips, right index has a little RTV peeling.
« Last Edit: 03/13/2021 01:45 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #73 on: 03/13/2021 01:46 pm »
Both are reporting dry HAP's, Glover's glove check coming soon.  We don't have a view of the venting.

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Re: ISS U.S. EVA-73
« Reply #74 on: 03/13/2021 01:47 pm »
Ike is going to give Hopper a look to check for any ammonia contamination.  So far he reports clean and normal.  A couple more minutes remaining in the 5 minute vent.  Hopper will now look at Ike.

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Re: ISS U.S. EVA-73
« Reply #75 on: 03/13/2021 01:48 pm »
Hopper reports Ike's suit looks clean.

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Re: ISS U.S. EVA-73
« Reply #76 on: 03/13/2021 01:49 pm »
Ike will coil the jumper and Hopper will work to stow the QD extender.  Ike's glove check is good.

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Re: ISS U.S. EVA-73
« Reply #77 on: 03/13/2021 01:51 pm »
The vent timer has ended.  They report no further venting.  Houston wants to "drag our feet to give it another minute or so."

Good to close.
« Last Edit: 03/13/2021 01:52 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #78 on: 03/13/2021 01:52 pm »
That has to be it for me, I'm off to work.  Best of luck to the EV crew!
« Last Edit: 03/13/2021 01:52 pm by DwightM »

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Re: ISS U.S. EVA-73
« Reply #79 on: 03/13/2021 02:57 pm »
1556 UTC:  Ike back at the airlock, about to retrieve the WETA bag.
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Re: ISS U.S. EVA-73
« Reply #80 on: 03/13/2021 02:59 pm »
Hopper messing with the APFR out at P6 with the SAW in the background
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Re: ISS U.S. EVA-73
« Reply #81 on: 03/13/2021 03:03 pm »
Thermal cover open at Quest.  Nice view of part of Russian segment at right.
Next task is to change out a WETA (Wireless video system External Transceiver Assembly)
- I didn't catch where this particular WETA is
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Re: ISS U.S. EVA-73
« Reply #82 on: 03/13/2021 03:45 pm »
Working on WETA replacement and Bartomoleo troubleshooting at Columbus  (1644 UTC)
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Re: ISS U.S. EVA-73
« Reply #83 on: 03/13/2021 03:49 pm »
Clear view of the WETA from Ike's helcam
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Re: ISS U.S. EVA-73
« Reply #84 on: 03/13/2021 04:03 pm »
[...] This just warrants further inspection, it does not affect the progress of this EVA.

Possible ammonia contact? No affect seems ... dubious. Compare that to this report:
Quote
Because of the ammonia leak, Wheelock and Dyson will have to spend extra time in the Quest airlock, allowing any residual ammonia that might be on their spacesuits to "bake out," before they can re-enter the station. Because of that, flight controllers decided to end today's spacewalk after the astronauts installed insulation on the disconnected lines.

That's from Realtime Coverage of U.S. EVA-15
08/07/2010
https://www.cbsnews.com/network/news/space/home/spacenews/files/8cc943b904117fab5faef011c762532d-40.html
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Re: ISS U.S. EVA-73
« Reply #85 on: 03/13/2021 04:05 pm »
Helmet cam view.
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Re: ISS U.S. EVA-73
« Reply #86 on: 03/13/2021 04:10 pm »
WETA install complete. Bag content check complete. It's apparently sunny there.

Good install confirmed.
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Re: ISS U.S. EVA-73
« Reply #87 on: 03/13/2021 04:20 pm »
Failed WETA going into the airlock.
Attempting work on PAPOS P04?
Nearly 4 hours into EVA.
PAO summarizes: Hopkins has connected one jumper on the Bartolomeo external platform.
Possible change of plan; work on stiffener before cable routing.
Continuing work on P04.
Working with pin straightener.
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Re: ISS U.S. EVA-73
« Reply #88 on: 03/13/2021 04:23 pm »
Taking a picture of current state.
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Re: ISS U.S. EVA-73
« Reply #89 on: 03/13/2021 04:27 pm »
Success with P04.
Glover HAP and glove check good.
Starting stiffener install.
Trying again with P02.
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Re: ISS U.S. EVA-73
« Reply #90 on: 03/13/2021 04:30 pm »
Somewhat elaborate rigging to try to reproduce successful P04 install on P02.
No success. Moving on to P03.
« Last Edit: 03/13/2021 04:30 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #91 on: 03/13/2021 04:33 pm »
PAO says exposure to sun has completed a "natural bake out" of ammonia flakes that may have come into contact with the EVA suits.
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Re: ISS U.S. EVA-73
« Reply #92 on: 03/13/2021 04:34 pm »
Ike attaching the thermal cover stiffener to the airlock - 1732 UTC
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Re: ISS U.S. EVA-73
« Reply #93 on: 03/13/2021 04:35 pm »
P03 good pins no FOD.
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Re: ISS U.S. EVA-73
« Reply #94 on: 03/13/2021 04:39 pm »
P03 pin straightening work.
About to try connection.
Good soft dock on P03.
« Last Edit: 03/13/2021 04:40 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #95 on: 03/13/2021 04:41 pm »
P03 connection success.
Trying again with pin straightener tine expansion tool on P02/J02.
« Last Edit: 03/13/2021 04:42 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #96 on: 03/13/2021 04:48 pm »
Hopkins still working final Bartolomeo connection.
Glover at airlock installing stiffener.

Victor Glover eye trouble! Right eye irritated; watery; creating tears.
« Last Edit: 03/13/2021 04:49 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #98 on: 03/13/2021 05:04 pm »
Success with 3 of the 4 plugs. Discontinuing work on P02. Will take photos then cap plug and jumper.
« Last Edit: 03/13/2021 05:05 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #99 on: 03/13/2021 05:16 pm »
Glover reports eye trouble has resolved.
Concern about thread on Hopkins glove left thumb; ground happy with it though.
HAM radio worksite next.
Just over 5 hours since spacewalk began.
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Re: ISS U.S. EVA-73
« Reply #100 on: 03/13/2021 05:24 pm »
Hopkins at the next work site on Columbus for HAM radio reconfiguration. Power checkouts on the 3 connectors reported to have gone well.
Glover done with stiffener install task.
« Last Edit: 03/13/2021 05:27 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #101 on: 03/13/2021 05:25 pm »
Working on thermal cover stiffener
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Re: ISS U.S. EVA-73
« Reply #102 on: 03/13/2021 05:27 pm »
HAM radio cable disconnections.
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Re: ISS U.S. EVA-73
« Reply #103 on: 03/13/2021 05:33 pm »
Unclear: is there now a bolt missing from the stiffener attachment?
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Offline Yellowstone10

Re: ISS U.S. EVA-73
« Reply #104 on: 03/13/2021 05:40 pm »
Unclear: is there now a bolt missing from the stiffener attachment?

Yes. Glover had to remove one bolt to free a stuck RET, and when he did so, the bolt assembly came apart. You can see one of the washers floating away in the helmet cam footage.

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Re: ISS U.S. EVA-73
« Reply #105 on: 03/13/2021 05:47 pm »
Plan now not to do Bartolomeo cable clamps, but instead proceed with CP8 and CP9 cable routing.
PAO says nearly 5 1/2 hours since start.
« Last Edit: 03/13/2021 05:48 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #106 on: 03/13/2021 06:19 pm »
One of those "how did we miss that?" moments - Hopkins was having trouble getting his cable reel to pay out. Turns out there's a strip of tape marked "REMOVE BEFORE EVA" holding the reel in place, presumably so it doesn't unwind early. It hadn't been removed - although I think Hopkins had a point when he asked "aren't those supposed to be red?"!

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Re: ISS U.S. EVA-73
« Reply #107 on: 03/13/2021 06:27 pm »
Glover's cable routing complete. Hopkins' cable reel being tied down prior to their return to the airlock.
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Re: ISS U.S. EVA-73
« Reply #108 on: 03/13/2021 06:36 pm »
CP8 cable good tie-down.
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Re: ISS U.S. EVA-73
« Reply #110 on: 03/13/2021 07:05 pm »
Re-pressurization begun.
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Re: ISS U.S. EVA-73
« Reply #111 on: 03/13/2021 07:05 pm »
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Re: ISS U.S. EVA-73
« Reply #112 on: 03/13/2021 07:11 pm »
EVA by the numbers graphic.
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Re: ISS U.S. EVA-73
« Reply #113 on: 03/13/2021 07:14 pm »
PAO hedging an answer about suit sizes. "About" 3 different size HUTs. Every other number reported was exact....
See https://forum.nasaspaceflight.com/index.php?topic=46212.msg2178525#msg2178525
« Last Edit: 03/13/2021 07:15 pm by sdsds »
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Re: ISS U.S. EVA-73
« Reply #114 on: 03/13/2021 07:52 pm »
[...] This just warrants further inspection, it does not affect the progress of this EVA.

Possible ammonia contact? No affect seems ... dubious. Compare that to this report:
Quote
Because of the ammonia leak, Wheelock and Dyson will have to spend extra time in the Quest airlock, allowing any residual ammonia that might be on their spacesuits to "bake out," before they can re-enter the station. Because of that, flight controllers decided to end today's spacewalk after the astronauts installed insulation on the disconnected lines.

That's from Realtime Coverage of U.S. EVA-15
08/07/2010
https://www.cbsnews.com/network/news/space/home/spacenews/files/8cc943b904117fab5faef011c762532d-40.html
The intent of my comment was to say that they would not be stopping at that point to deal with it and that the EVA would go on.

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Re: ISS U.S. EVA-73
« Reply #115 on: 03/13/2021 08:16 pm »
[...] This just warrants further inspection, it does not affect the progress of this EVA.

Possible ammonia contact? No affect seems ... dubious. Compare that to this report:
[...]
The intent of my comment was to say that they would not be stopping at that point to deal with it and that the EVA would go on.

Understood! No offense intended regarding your coverage; quite the opposite actually as I really appreciate it!

And as events played out NASA clearly made the correct decision. Lots of time in the sun was all it took to clear any chance of a hazard. NB in the airlock Kate had prepped the ammonia test equipment kit, but everyone was content with her assessment based on a quite literal sniff test!
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Offline Yellowstone10

Re: ISS U.S. EVA-73
« Reply #116 on: 03/13/2021 09:41 pm »
NB in the airlock Kate had prepped the ammonia test equipment kit, but everyone was content with her assessment based on a quite literal sniff test!

Anecdotally, having worked with anhydrous ammonia in chemistry labs before - yep, if it's not rigorously contained, your nose will let you know.

Data-wise, most humans can smell ammonia around 5 ppm, with the permissible exposure limit in the US being 50 ppm and the IDLH level being 300 ppm.

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Re: ISS U.S. EVA-73
« Reply #117 on: 03/13/2021 11:34 pm »
Anyone know approximately when US EVA 74 is scheduled?

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Re: ISS U.S. EVA-73
« Reply #118 on: 03/14/2021 01:11 am »
Anyone know approximately when US EVA 74 is scheduled?
if they choose to complete the current set of tasks plus get ahead tasks then as early as a week from the last one. If they defer until after IROSA-1,2 arrival at station it will be after CRS-22 arrives.

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Re: ISS U.S. EVA-73
« Reply #119 on: 03/14/2021 04:50 am »
Video of entire EVA:



Offline eeergo

Re: ISS U.S. EVA-73
« Reply #120 on: 03/15/2021 10:29 am »
Success with 3 of the 4 plugs. Discontinuing work on P02. Will take photos then cap plug and jumper.

Did they finally plug in P02 or did they leave it disconnected? What's the status of Bartolomeo after this EVA, in either case?
-DaviD-

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Re: ISS U.S. EVA-73
« Reply #121 on: 03/15/2021 11:41 am »
P2 to J2 was not successful. He left both capped.
Jack

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Re: ISS U.S. EVA-73
« Reply #122 on: 03/15/2021 03:35 pm »
NASA ISS EVAs stats
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Offline SMS

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Re: ISS U.S. EVA-73
« Reply #124 on: 03/17/2021 01:53 pm »
iss064e041816 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Victor Glover is pictured during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Michael Hopkins (out of frame).

iss064e041692 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Michael Hopkins is pictured during a spacewalk during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Victor Glover (out of frame).

iss064e041713 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Michael Hopkins (center) is dwarfed by the International Space Station's main solar arrays and radiators during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Victor Glover (out of frame).

iss064e041634 (March 13, 2021) --- NASA spacewalkers Michael Hopkins and Victor Glover (both at center) are dwarfed by the International Space Station's main solar arrays and radiators during a spacewalk to service the station’s cooling system and communications gear.

iss064e041899 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Victor Glover takes a "space-selfie" with his helmet's visor down during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Michael Hopkins (out of frame).

iss064e042015 (March 13, 2021) --- JAXA (Japan Aerospace Exploration Agency) astronaut and Expedition 64 Flight Engineer Soichi Noguchi poses for a playful portrait with the suited up NASA spacewalkers (from left) Michael Hopkins and Victor Glover. The duo would go on to service the International Space Station’s cooling system and communications gear during a six-hour and 47-minute spacewalk.

iss064e042014 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Kate Rubins poses for a playful portrait with the suited up NASA spacewalkers (from left) Michael Hopkins and Victor Glover. The duo would go on to service the International Space Station’s cooling system and communications gear during a six-hour and 47-minute spacewalk.

iss064e042055 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Victor Glover is pictured outside the Quest airlock during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Michael Hopkins (out of frame).

iss064e042327 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Michael Hopkins takes a "space-selfie" with his helmet's visor down during a spacewalk to service the station’s cooling system and communications gear with fellow NASA spacewalker Victor Glover (out of frame).

iss064e042059 (March 13, 2021) --- NASA astronaut and Expedition 64 Flight Engineer Michael Hopkins is pictured during a spacewalk servicing communications gear on the outside of the International Space Station's Columbus laboratory module.
« Last Edit: 03/17/2021 02:36 pm by SMS »
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SMS ;-).

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