Author Topic: ISS US EVA 83 - 4A Channel IROSA Install - 22 Dec 2022 [Rubio, Cassada]  (Read 26115 times)

Offline cohberg

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ISS US EVA 83 - 4A IROSA Install
IROSA install #4

Scheduled for: December 22nd, 2022 8:30AM EST
Duration: 7 hours
Primary Worksite: P4 Solar Array Truss
EV1 (Red Stripe): Rubio
EV2: Cassada



Updates

Quote from: nasa.gov/multimedia/nasatv/schedule.html#.V9B_0DXTt1o
Coverage of U.S. Spacewalk 83 to Install the ISS Roll Out Solar Array on the Port 4 Truss to Augment Electrical Capability for the 4A Power Channel (Rubio and Cassada; spacewalk is scheduled to begin at approximately 8:30 a.m. EST and will last around 7 hours) – Johnson Space Center (All Channels).

Quote from: Rob Navias - Email (11/24/2022) to "Ben E"
Q: Have EVA crew members been identified yet for U.S. EVA-82 and 83?
A: Cassada and Rubio for the next two

Q: I understand from NASA's TV schedule that the iROSA EVAs have now moved to 3 Dec and NET 19 Dec...
A: We had to wait for the end of a beta angle cutout

Q: Many thanks. Can I also just check: is Cassada still EV1 and Rubio EV2, or will they swap?
A: Cass is EV1 and Rubio is EV2 for the next one and the swap designations for the one after that



Relevant Threads
ISS advanced solar array upgrades (iROSA)



DOUG EVA Movie




Early DOUG EVA Steps
Quote from: Produced on 12/13 by CNG - Based on: US_EVA_3A_4A_IROSA_Install_v22
US_EVA_3A_4A_IROSA_Install_EVA2 Reconfig Dialog
2.1 Pre EVA2 Configuration
2.3 EGRESS

2.4 ---->EV FF Egress Airlock with CIL Bag M
2.5 ---->EV SSRMS Egress Airlock
2.6 WORKSITE PREP
2.7 ---->EV FF Translate to GREEN Hook P1 HR 3652
2.8 ---->EV FF Translate to the Stbd CETA cart, bundle CIL bag to cable bag, and stow on BRT
2.9 ---->EV FF Stow Cable Bag on HR 5107, then retrieve CL Bag and stow on BRT
2.10 ---->EV FF Translate to Mast Canister and stow CL Baa on lower left side of Mod Kit
2.11 ---->EV FF Install Square Scoop onto mounting bracket
2.12 ---->EV FF Retrieve Right Side Cables (Red Barber pole tape) and route towards SAW Connector Panel
2.13 ---->EV FF Retrieve Left Side Cables and route towards SAW Connector Panel
2.14 ---->EV SSRMS Translate to GREEN Hook P1 HR 3651
2.15 ---->EV SSRMS Translate to F SE Tower and retrieve Socket Caddy from CIL Bag T
2.16 RELEASE ANTI-ROTATION DEVICES
2.17 ---->EV SSRMS Translate to C12 release Stop Block Bolt (10 trns), release ARD, drive stop block bolt
2.18 ---->EV SSRMS Translate to C11 release Stop Block Bolt (10 trns), release ARD, drive stop block bolt
2.19 ---->EV SSRMS Translate to CL Bag and Stow Stow Adj Equip Tether with ARDs
2.20 RELEASE ZENITH UPPER IROSA SUPPORT BEAM
2.21 ---->EV SSRMS Translate to FSE Stanchion C and release beam Restraint bolts C4, C3 (8-11 turns)
2.22 ---->EV FF Translate to FSE Stanchion B
2.23 ---->EV FF Release Beam Restraint Bolts C5, C6 (8-11 turns)
2.24 ---->EV SSRMS Translate to Stanchion A and Release Beam Restraint Bolts C7, C8 (8-11 turns)
2.25 ---->EV FF Rotate beam towards stanchion A (Nadir Outboard)
2.26 ---->Both crew tether zenith beam to F SE
2.27 RELEASE NADIR UPPER IROSA SUPPORT BEAM
2.28 ---->EV SSRMS Translate to Stanchion D and Release Beam Restraint bolt C10, C9 (8-11 turns)
2.29 ---->EV FF Translate to Stanchion C
2.30 ---->EV SSRMS Rotate Beam towards Stanchion C (C7 to EV FF)
2.31 ---->EV FF Handstart C7 (2-3 turns), then drive (25-27 turns)
2.32 ---->EV SSRMS Handstart C9, then drive (25-27 turns)
2.33 ---->EV SSRMS Translate to P3 and verify SSRMS APFR settings [9, FF, D, 9]
2.34 ---->EV SSRMS ingress APFR
2.35 ---->EV FF Break torque on C12 (112 turn) with PGT
2.36 ---->EV FF Release bolts C11 (27 turns), get Scoop from CL Bag, then release C12 (51-54 turns)
2.37 ---->EV FF Install Scoop on root beam micro square near C12, 45 deg towards crewmember
2.38 IROSA RELEASE FROM FSE
2.39 ---->EV FF Translate to F SE Grapple Tower and retrieve Scoop + LDTDT from CL Bag T
2.40 ---->EV SSRMS Give SSRMS Go to published IROSA Nadir Position
2.41 ---->EV FF On EV SSRMS GO release C11 (24-26 turns)
2.42 ---->EV FF Install Square Scoop on root beam microsquare near C11, handle zenith
2.43 ---->EV SSRMS Slide IROSA Zenith to release from FSE
2.44 ---->EV FF Give SSRMS Go to maneuver to Lower IROSA Back Off position, then to IROSA Install position
2.45 IROSA INSTALL
2.46 ---->EV FF Socket Swap at CL Bag and relocate EV SSRMS Red hook to HR 5124
2.47 ---->EV FF Translate to left side of mounting bracket
2.48 ---->EV SSRMS Remove Scoop from Root Beam
2.49 ---->EV SSRMS, EV FF Install IROSA onto mounting bracket
2.50 ---->EV SSRMS Give SSRMS GO to R6 Release Position
2.51 ---->EV SSRMS retrieves scoop and passes both scoops + LDTDT to EV FF, stow on CL Bag 2
2.52 ---->EV SSRMS Release R6 (18-20 turns) then egress APFR and reposition to right side of mounting bracket
2.53 ---->EV FF Pivot IROSA to unfolded, EV FF engage right side alignment tab and capture
2.54 ---->EV SSRMS Drive R7, R8 (13 turns) with PGT
2.55 ---->EV FF Retrieve AM S knob then transfer to EV SSRMS
2.56 ---->EV SSRMS Drive R7, R8 with AM S knob
2.57 ---->EV SSRMS Retrieve Cap keeper from CL Bag, transfer to EV FF, receive and stow AM S knob in CL Bag
2.58 ---->EV SSRMS Remove caps J1-J4 then transfer cap keeper back to EV FF stow in CL Bag
2.59 ---->EV SSRMS Tether Swap RED hook on HR 5124
2.60 ---->EV FF Drive Left bolts, then Right bolts M31-38 with PGT
2.61 ---->EV SSRMS Translate to Mounting Bracket
2.62 ---->EV SSRMS Mate Right cables
2.63 ---->EV FF Mate Left cables
2.64 IROSA DEPLOY
2.65 ---->EV FF Position to observe tower magnets snap together during initial deployment near HR 5201
2.66 ---->EV SSRMS Remove Square Scoop from mounting bracket and stow in CL Bag
2.67 ---->EV SSRMS Release R9, R10 (17-20 turns) with PGT
2.68 ---->EV SSRMS, EV FF Monitor array deployment
2.69 RELEASE BTS BOLTS
2.70 ---->EV SSRMS Stow CL Bag in Cable Bag
2.71 ---->EV SSRMS After full deployment, release Blanket Bolts R11, R12 (5-6 turns)
2.72 ---->EV SSRMS Stow Cable Bag on BRT
2.73 ---->EV FF Translate to Port CETA Cart WIF 2
2.74 ---->EV SSRMS Translate to Port CETA Cart, Stow Cable Bag on Port CETA Cart
2.75 CLEANUP
2.76 ---->EV SSRMS Give SSRMS Go to APFR Removal Position
2.77 ---->EV SSRMS Remove APFR from SSRMS, Install APFR in Port CETA Cart WIF 3 [6, PP, F, 6]
2.78 ---->EV SSRMS Inventory Cable Bag and stow on BRT
2.79 ---->EV FF translate to Stanchion A and and hand start 0
2.80 ---->EV FF translate to Stanchion B, drive C5
2.81 ---->EV FF translate to Stanchion A and finish driving C3
2.82 ---->EV FF Translate to Tower HR, Stow CL Bag on BRT
2.83 ---->EV SSRMS Translate to AL, retrieve GREEN Hook from P1 HR 3651
2.84 ---->EV FF Translate to AL, retrieve GREEN Hook from P1 HR 3652
2.85 ---->EV SSRMS Ingress AL
2.86 ---->EV FF Ingress AL
2.87 GET AHEAD, P6 APFR Retrieve
2.88 ---->EV FF Retrieve 55 ft ST from Cable Bag
2.89 ---->EV SSRMS Stow CL Bag in Cable Bag
2.90 ---->EV FF Translate to P6 WIF 17, Retrieve APFR from WIF 17, stow on BRT
2.91 ---->EV SSRMS After full deployment, release Blanket Bolts R11, R12 (5-6 turns)
2.92 ---->EV SSRMS Stow Cable Bag on BRT
2.93 ---->EV FF translate to P4 4A lEA and perform tether swap
2.94 ---->EV FF Translate to Port CETA Cart WIF 2, Install APFR [9, PP, f, 2]
2.95 ---->EV SSRMS Translate to Port CETA Cart, Stow Cable Bag on Port CETA Cart


‎‏‏‎ ‎‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎  ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎  ‎‏‏‎ ‎‎‏‏‎ ‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎  ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎‎‏‏‎ ‎‏‏‎ ‎  Like‎‏‏‎ ‎‏‏‎ ‎ Quote
« Last Edit: 12/21/2022 05:04 pm by cohberg »

Offline Ben E

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Re: ISS US EVA 83 - 4A IROSA Install
« Reply #1 on: 11/25/2022 08:57 am »
For this EVA, Rubio is EV1 and Cassada is EV2.
« Last Edit: 11/25/2022 08:58 am by Ben E »

Offline Galactic Penguin SST

Looks like this EVA is also going to be delayed to freed up the SSRMS for Soyuz MS-22 exterior inspections.

https://twitter.com/sciguyspace/status/1603763970208301056
Astronomy & spaceflight geek penguin. In a relationship w/ Space Shuttle Discovery. Current Priority: Chasing the Chinese Spaceflight Wonder Egg & A Certain Chinese Mars Rover

Offline Targeteer

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MCC-H confirmed during Friday evening DPC that the EVA Monday is postponed while program analyzes the Soyuz leak.  The plan for Sunday is being reworked to reflect the postponement.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online eeergo

EVA is now planned for Wednesdat, Dec 21st.
-DaviD-

Offline Targeteer

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December 19, 2022
MEDIA ADVISORY M22-185
NASA to Air Live Coverage of US Spacewalk for Solar Array Installation

NASA astronauts aboard the International Space Station will conduct a spacewalk on Wednesday, Dec. 21, to install a rollout solar array to increase electrical power in support of operations and scientific research. The spacewalk is scheduled to begin at 7:45 a.m. EST and last about seven hours.

The agency will provide live coverage of the spacewalk beginning at 6:30 a.m. on NASA Television, the app, and the agency’s website.

Expedition 68 Flight Engineers Frank Rubio and Josh Cassada will exit the station’s Quest airlock to install an International Space Station Roll-Out Solar Array (iROSA) to augment power generation for the 4A power channel on the station’s port truss.

Rubio will serve as extravehicular crew member 1 (EV 1) and will wear a suit with red stripes. Cassada will serve as extravehicular crew member 2 (EV 2) and will wear an unmarked suit. The spacewalk will be the third in both Cassada and Rubio’s careers.

If more time is needed to complete the iROSA installation, a second spacewalk may be conducted on Tuesday, Dec. 27.

This will be the fourth iROSA installed on station out of a total six planned for installation. Overall, the iROSAs will increase power generation capability by up to 30%, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

The iROSA arrived at the space station Nov. 27, following a launch aboard the agency’s 26th SpaceX Dragon commercial resupply mission Nov. 26.

Cassada and Rubio are in the midst of a science mission living and working aboard the microgravity laboratory to advance scientific knowledge and demonstrate new technologies for future human and robotic exploration missions, including NASA’s Artemis missions to the Moon.

Get breaking news, images and features from the space station on Instagram, Facebook, and Twitter.

Learn more about the International Space Station and its crew at:

https://www.nasa.gov/station
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Go for O2 mask doffing.  Comm checks in work.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Go for airlock repress
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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ISLE CO2 purge protocol underway.  SG-1 is being privatized, not normal, so there is something NASA doesn't want broadcast...
« Last Edit: 12/21/2022 09:17 am by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Comms back and crew has been instructed to perform some POST EVA procedures...
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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crew has been instructed to photograph the water absorbing HAPs which can only be done if the crew isn't wearing their helmets... Other steps sound like the crew is no longer in the space suits...
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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the CO2 cannisters have been removed
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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crew requested pre-breathe configuration remain in place overnight.  Sounding more like the EVA is off...
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline FutureSpaceTourist

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Offline Targeteer

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EVA back out complete.  Crew will be replanning the rest of the day.  EVA is definitely cancelled/delayed.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Will NASA provide an update when coverage was supposed to start at 0630?
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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coverage announcement is up so we'll see what NASA says in 5 minutes
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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I'm guessing a "physiological issue"...
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Frank is back on comms and joked about it being nice to talk to CAPCOM
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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Late Orbital debris conjunction caused the scrub, PDAM using Progress planning in progress.  Debris part of a Russian Fregat upper stage that is apparently rarely tracked--in a high inclination/Molniya orbit?
« Last Edit: 12/21/2022 10:43 am by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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miss distance within 1/4 mile.  Maneuver target 0742 central, 0842 eastern.
« Last Edit: 12/21/2022 10:36 am by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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time of closest approach was 1017 central.  PDAM may replace planned reboost scheduled later this week.  No new date on EVA
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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crew was 30 minutes ahead on the timeline and asked if they would have been held--for day/night pass timing?  The response was yes, they would have been held.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Online eeergo

miss distance within 1/4 mile.  Maneuver target 0742 central, 0842 eastern.

Wow, that's awfully close for a full Fregat if accurate, especially when it could have shed small pieces (insulation, paint flakes...) over time into similar orbits around it, which would be completely invisible being in a highly elliptical orbit.

Orbital debris is giving ISS a hard time these last few days.

Offline FutureSpaceTourist

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twitter.com/marco_langbroek/status/1605545912175972352

Quote
This appears to be object nr 52960,  2011-037PP, a piece of debris from the Fregat stage of the Spectr-R launch

https://twitter.com/marco_langbroek/status/1605553784905641984

Quote
Encounter with the Fregat debris would have been over the Pacific Ocean near 18.5 N 168.4 E near 16:17:43 UTC (21 Dec) :

Offline FutureSpaceTourist

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https://blogs.nasa.gov/spacestation/2022/12/21/space-station-maneuvers-to-avoid-debris-after-conjunction-postpones-spacewalk/

Quote
Space Station Maneuvers to Avoid Debris After Conjunction Postpones Spacewalk

The International Space Station conducted a Pre-Determined Debris Avoidance Maneuver (PDAM) today, Dec. 21, at 8:42 a.m. EST. The decision to conduct the maneuver was based on tracking data that showed a close approach to station of a fragment of Russian Fregat-SB upper stage debris.

During the manuever, the Roscosmos Progress 81 thrusters fired for 10 minutes, 21 seconds to provide the complex an extra measure of distance away from the predicted track of the debris. Without the maneuver, it was estimated that the debris could have passed less than a quarter of a mile from the station.

The decision to conduct the maneuver earlier this morning resulted in a postponement of today’s planned spacewalk by NASA astronauts Frank Rubio and Josh Cassada. The crew was never in any immediate danger.

Learn more about station activities by following the space station blog, @space_station and @ISS_Research on Twitter, as well as the ISS Facebook and ISS Instagram accounts.

Get weekly video highlights at: https://roundupreads.jsc.nasa.gov/videoupdate/

Get the latest from NASA delivered every week. Subscribe here: www.nasa.gov/subscribe

Author Heidi Lavelle
Posted on December 21, 2022
Categories Expedition 68Tags Canadian Space Agency, European Space Agency, International Space Station, JAXA, NASA, Pre-Determined Debris Avoidance Maneuver, Roscosmos

Photo caption:

Quote
The space station was pictured from the SpaceX Crew Dragon Endeavour during its departure on Nov. 8, 2021.

Online butters

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miss distance within 1/4 mile.  Maneuver target 0742 central, 0842 eastern.

Wow, that's awfully close for a full Fregat if accurate, especially when it could have shed small pieces (insulation, paint flakes...) over time into similar orbits around it, which would be completely invisible being in a highly elliptical orbit.

Orbital debris is giving ISS a hard time these last few days.
If the identification of the object above is correct, then this Fregat had a RUD in 2020 resulting in at least 65 trackable pieces of debris.

Offline Targeteer

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CAPCOM update.  EVA on track for tomorrow although another red debris conjunction is currently being tracked prior to the start of EVA prep.  Updates to follow.
« Last Edit: 12/21/2022 04:49 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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The crew asked for an update on tomorrow's timeline.  CAPCOM responded all times are expected to shift 45 minutes to the right.
« Last Edit: 12/21/2022 06:01 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

Offline Targeteer

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https://blogs.nasa.gov/spacestation/2022/12/21/spacewalk-postponed-to-thursday-managers-discuss-soyuz-leak-inquiry/

NASA astronauts Frank Rubio and Josh Cassada are now scheduled to begin a spacewalk at 8:30 a.m. EST Thursday to augment the International Space Station’s power generation system. Wednesday’s spacewalk was postponed for 24 hours so that the orbiting lab’s ISS Progress 81 cargo craft could fire its engines at 8:42 a.m. to maneuver the station and avoid an approaching piece of rocket debris.

Spacewalkers Rubio and Cassada will install another roll-out solar array, also known as an International Space Station Roll-Out Solar Array (iROSA), on the space station’s truss structure. This time the duo will maneuver to the opposite side of the station and install the fourth iROSA on the Port-4 truss structure. The external installation job will last about seven hours and broadcast live on NASA TV on the agency’s app and its website.

Expedition 68 Flight Engineers Nicole Mann of NASA and Koichi Wakata of the Japan Aerospace Exploration Agency (JAXA) will operate the Canadarm2 robotic arm to support the spacewalkers during the fine-tuned iROSA installation job. The duo will also assist Rubio and Cassada in and out of their spacesuits, also known as Extravehicular Mobility Units (EMUs), in the Quest airlock before and after their spacewalk.

While Thursday’s spacewalk is under way, NASA space station program manager Joel Montalbano and Roscosmos human spaceflight executive director Sergei Krikalev will hold an audio-only media teleconference 11 a.m. The two space executives will discuss the ongoing investigation of an external leak detected on the Soyuz MS-22 crew ship on a live audio call streaming on NASA’s website at https://www.nasa.gov/live.

The three cosmonauts representing Expedition 68, Commander Sergey Prokopyev and Flight Engineers Dmitri Petelin and Anna Kikina, stayed focused on lab maintenance servicing and cleaning a variety station hardware today.
« Last Edit: 12/22/2022 06:52 am by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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Crew has checked in from the airlock as EVA preps have begun.  Looks like the 45 minute slide right on the timeline is correct.
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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good suit data
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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Edit to add:
https://twitter.com/Space_Station/status/1605918964290396161
Quote
.@NASA_Astronauts
 Josh Cassada and Frank Rubio began their spacewalk today at 8:19am ET. They will install the fourth of six roll-out solar array panels that will increase station power generation capability by 30%.
« Last Edit: 12/22/2022 05:09 pm by zubenelgenubi »

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Official begin of the EVA was at 13:19 UTC.

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PGT at work

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About an hour into the spacewalk, Cassada is working to release the anti-rotation devices on the iROSA that are holding it in place. Rubio is securing power cables that will be connected once the iROSA is in place and making sure the soft-capture system is ready for its arrival.

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https://twitter.com/space_station/status/1605934562491502592

Quote
About an hour into the spacewalk, Cassada is working to release the anti-rotation devices on the iROSA that are holding it in place. Rubio is securing power cables that will be connected once the iROSA is in place and making sure the soft-capture system is ready for its arrival.

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From today's media teleconference:
Installation circa 1 pm (CST?).
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4.5 hours into EVA: iROSA is bolted to the installation bracket, some electrical connections made.  The rest will be completed in orbital nighttime.  Prep for this is currently underway.

Some screen captures:
« Last Edit: 12/22/2022 05:01 pm by zubenelgenubi »
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https://twitter.com/Space_Station/status/1605947348370087936?cxt=HHwWgICjudmmvMksAAAA
Quote
Earth views as Rubio on the right and Cassada on the left are seen working together to release iROSA from it’s holding location so that they can relocate it for installation, with the @csa_asc #Canadarm2 seen above! 🔧🌍🦾

https://twitter.com/Space_Station/status/1605964971489120266?cxt=HHwWlMCi9b-oxMksAAAA
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.@Astro_Josh
 and the 750-lb iROSA get a lift to the installation site from the Canadarm2 robotic arm, flown by
@AstroDuke and @Astro_Wakata
 from inside the station. Rubio makes his way to the work site where he prepped the power connection cables earlier in the spacewalk.
« Last Edit: 12/22/2022 05:05 pm by zubenelgenubi »
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Station is now in eclipse, and the astronauts are working to disconnect the cables to the legacy arrays / reconnect them to new Y-cables that will splice in the iROSAs.
« Last Edit: 12/22/2022 05:29 pm by Yellowstone10 »

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Earlier in the EVA, removing iROSA from its berth:
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All power cable connections have been completed. Astronauts are now tidying up the slack in the cables.

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Some simultaneous screencaps to Yellowstone's.
What are the red and blue dots--bad camera pixels?
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Station is now in eclipse, and the astronauts are working to disconnect the cables to the legacy arrays / reconnect them to new Y-cables that will splice in the iROSAs.
Doing this in eclipse, as well as powered down, so the astronauts do not electrocute themselves.

I believe the same reason is why they must not be touching circuits, etc at orbital sunrise.
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What are the red and blue dots--bad camera pixels?

Yep - pixels in the sensor that have taken radiation hits while in orbit.

Lots of Santa hats in mission control, while we wait for sunrise and some power checkouts by SPARTAN before they unroll the array.

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From earlier, some iROSA mechanical bolting and iROSA side electrical connecting:
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Orbital sunrise:
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And here's Josh Cassada's view as he waits to unbolt the last couple restraints.

Update - first bolt out, PGT in place on the second.
« Last Edit: 12/22/2022 05:52 pm by Yellowstone10 »

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iROSA is rolling out!

Edit - added Cassada's view.
« Last Edit: 12/22/2022 05:55 pm by Yellowstone10 »

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Deployment

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More deploy screencaps:
« Last Edit: 12/22/2022 06:00 pm by zubenelgenubi »
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The unrolling end of iROSA is now in view of a hi-def station camera:

Edit - added a view from Rubio's helmet cam showing the cross-section of the boom rolling up as it extends. Astronauts are commenting on the size of the huge winter storm currently over the United States.
« Last Edit: 12/22/2022 06:02 pm by Yellowstone10 »

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Cassada drives the last couple of bolts to release the tensioners, and that should be it for iROSA deployment.
« Last Edit: 12/22/2022 06:12 pm by Yellowstone10 »

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Work site cleanup, etc.
« Last Edit: 12/22/2022 06:43 pm by zubenelgenubi »
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Rubio's first main cleanup task is to secure the beam restraints (which the top iROSA sat on, and had to be removed to access the lower one) to the pallet that brought up the two iROSAs, while Cassada is retrieving the APFR from the SSRMS.
« Last Edit: 12/22/2022 06:37 pm by Yellowstone10 »

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Rubio quips that this is the closest he's been to an APFR in three EVAs. Cassada responds that he'd be glad to hand it over if Frank wants it.

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Finishing up before moving to the airlock:
« Last Edit: 12/22/2022 07:00 pm by zubenelgenubi »
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Moving to and into the airlock:

SPARTAN reports new solar array is generating electricity.

Congratulations via Capcom from Mission Control.

Hatch close.
« Last Edit: 12/22/2022 07:35 pm by zubenelgenubi »
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https://twitter.com/Space_Station/status/1606008090662273024
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.@NASA spacewalker Josh Cassada works on the roll-out solar array shortly before its deployment on the station's Port-4 truss segment. https://nasa.gov/live
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Concluding remarks as the astronauts hook their EMUs back up to the ISS - CAPCOM notes that "you made it look easy and routine... you've got a lot of people who are very glad that their holiday plans are still secure."

Cassada responds that he and Frank are going to put in for some leave.

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Repressurization has begun, concluding the spacewalk at 3:27 pm Eastern Time / 2027 UTC for a duration of 7 hours 8 minutes.

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By the numbers:

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Today's EVA statistics and webcast sign-off.

Thumbs up to the entire EVA team!  And thank you, Joachim and Yellowstone, for your assistance covering the EVA for this thread!
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That's an early signoff, normally coverage continues until the helmets are off... The crew is currently being serenaded by a someone singing "IROSA Rock" from Mission Control.
« Last Edit: 12/22/2022 08:07 pm by Targeteer »
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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Some photos posted by NASA

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https://blogs.nasa.gov/spacestation/2022/12/22/nasa-spacewalkers-install-stations-fourth-roll-out-solar-array/

Quote
NASA Spacewalkers Install Station’s Fourth Roll-Out Solar Array

Expedition 68 Flight Engineers Josh Cassada and Frank Rubio of NASA concluded their spacewalk at 3:27 p.m. EST after 7 hours and 8 minutes.

Cassada and Rubio completed their major objectives for today to install an International Space Station Roll-Out Solar Array (iROSA) on the 4A power channel on the port truss. The iROSAs will increase power generation capability by up to 30%, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts.

It was the 257th spacewalk in support of space station assembly, upgrades, and maintenance, and was the third spacewalk for both astronauts.

Cassada and Rubio are in the midst of a planned six-month science mission living and working aboard the microgravity laboratory to advance scientific knowledge and demonstrate new technologies for future human and robotic exploration missions, including lunar missions through NASA’s Artemis program.

While Thursday’s spacewalk was underway, NASA Space Station Program Manager Joel Montalbano and Roscosmos Human Spaceflight Executive Director Sergei Krikalev participated in an audio-only media teleconference. The two space executives discussed the ongoing investigation of an external leak detected on the Soyuz MS-22 crew ship. Ground teams continue to assess data and options for the safe return of crew to Earth.

Listen to the teleconference here.

A transcript of the telecon will be provided once available.

Photo caption:

Quote
NASA spacewalker Josh Cassada prepares the station’s fourth roll-out solar array for its installation and deployment as the orbiting lab flew above the Atlantic Ocean off the coast of Namibia.
« Last Edit: 12/22/2022 08:23 pm by FutureSpaceTourist »

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Key NASA personnel for this EVA (according to my info): Flight Director was Fiona Turett, EVA Officer: Chris Mundy, Capcom: Nick Hague
« Last Edit: 12/23/2022 06:02 am by Lewis007 »

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Not sure where the best place to put this.

Per Rob Navias via email

The iROSA FSE / carrier is not loaded / departing with CRS-26.
It will instead be jettisoned via the SSRMS

My best guess is that the MS-22 inspection occupied a lot of arm time and there was not enough time to load the FSE / carrier back into dragon

Interesting. So out of curiosity when jettisoned via the SSRMS how long should it take to reenter?

Is this a big deal re orbital debris mitigation/avoidance?

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iROSA Pallet was jettisoned today via the SSRMS at ~9:26 AM PT
Video is 10x-30x realtime, LOS blue screens have been removed



« Last Edit: 02/01/2023 05:19 pm by cohberg »

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Video of the pallet leading ISS
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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55448    ISS DEB (SPX-26 IPA FSE)   1998-067VB   92.88   51.64   419   412
Best quote heard during an inspection, "I was unaware that I was the only one who was aware."

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