Author Topic: US EVA 93 - May 01, 2025 (~12:00 UTC) [McClain & Ayers] (Read 16502 times)

Targeteer · « **on:** 04/10/2025 01:05 pm »

Based on this conversation heard on 10 Apr... "Anne just asked which EMUs are planned for use for the 01 May EVA, Luca Parmitano responded "we'll let you know when we have an answer.""

TALsite · « **Reply #1 on:** 04/13/2025 06:45 pm »

From the Soyuz MS-27 thread:
Kim and Onishi helping doning EVA suits during training to Ayers and McClain.
Maybe another all-female spacewalk?

Quote from: ddspaceman on 03/17/2025 03:06 pm

Jonny Kim
@JonnyKimUSA

T+183 (2.26.24): No "i" in team. So much of what we do is support each other. Which is why we train so much in helping each other suit up before an EVA. When we say we put our lives in each other's hands, we mean it. That means being meticulous with each connection, following checklists, and backing each other up.

https://x.com/JonnyKimUSA/status/1901556291408920678

Targeteer · « **Reply #2 on:** 04/14/2025 10:03 am »

Anne is doing comm checks during EMU checkout.

Targeteer · « **Reply #3 on:** 04/14/2025 10:20 am »

Crew is evaluating the previously discussed fan noise and whether it is any worse with ground controllers.

Targeteer · « **Reply #4 on:** 04/14/2025 10:38 am »

Ground is listening to the fan noise from multiple locations

Targeteer · « **Reply #5 on:** 04/14/2025 10:56 am »

Anne reports the fan sounds normal.

Targeteer · « **Reply #6 on:** 04/14/2025 11:05 am »

The ground is not receiving calls from the airlock so they have asked the crew to swap a mic from node 3. All spares on orbit are suspect.

GewoonLukas_ · « **Reply #7 on:** 04/15/2025 04:29 pm »

Anne McClain and Nichole Ayers will perform the spacewalk:

Quote

Astronauts Prep for May Spacewalk Amid Human Research and Crew Departure
April 15, 2025

Two NASA astronauts are preparing their spacesuits for a spacewalk planned for the beginning of May to ready the International Space Station for a new rollout solar array. In the meantime, the rest of the Expedition 72 crew on Tuesday kept up its ongoing vision, respiratory, and circulatory system research ahead of this weekend’s crew departure.

Flight Engineers Anne McClain and Nichole Ayers have been tapped by mission managers to exit the orbital outpost’s Quest airlock on May 1 for a spacewalk and work six-and-half hours in the vacuum of space. The NASA duo will install a modification kit on the port side of the station’s truss structure enabling the future installation of the orbiting lab’s seventh rollout solar array. They will also relocate an antenna that communicates with approaching and departing commercial crew and cargo spacecraft. McClain will be going on her third spacewalk and Ayers will be conducting her first spacewalk.

McClain and Ayers spent Tuesday inside Quest adjusting the spacesuits ensuring the helmets, boots, and arm and leg assemblies they will wear fit together. Next, the pair powered up and checked the functionality of suit components such as glove heaters, data recorders, cameras, and helmet lights. Finally, McClain and Ayers began collecting and configuring the tools they will use during the upcoming maintenance spacewalk.

[...]

cohberg · « **Reply #8 on:** 04/15/2025 05:07 pm »

ISS US EVA 93 - 2A IROSA Install
IROSA prep / install #7

Quote from: NASA - ISS Blog

The NASA duo will install a modification kit on the port side of the station’s truss structure enabling the future installation of the orbiting lab’s seventh rollout solar array. They will also relocate an antenna that communicates with approaching and departing commercial crew and cargo spacecraft.

EVA-93 also has some possible get aheads close to the 2A site

Scheduled for:	May 1^st, 2025 6:30 AM ET
Duration:	6.5 hours
Primary Worksite:	2A Solar Array
EV1 (Red Stripe):	Anne McClain ^{EMU #3003} ^{3^rd Spacewalk}
EV2:	Nichole Ayers ^{EMU #3015} ^{1^st Spacewalk}

2A Solar Array IROSA mounting bracket

Spacewalk Worksite - 2A Solar Array

.

Interesting Reading and Relevant Thread(s)

Analysis of possible 2A array damage - https://ntrs.nasa.gov/citations/20120016966
ISS advanced solar array upgrades (iROSA)

DOUG EVA Movie

Early DOUG EVA Steps

Quote from: Produced on 4/15 by CNG - Based on: US_EVA_IROSA_Prep_2A_v26.pkg

3 EGRESS
4 ---->EV1 egress Airlock and recieve Strut Bag from EV2
5 ---->EV2 egress and receive Strut Bag from EV1, Stow on BRT
6 ---->EV1 Retrieve Cable Bag from AIL, stow on BRT
7 ---->EV1 and EV2 translate to lEA (EV2 Leads)
8 STOW CABLE AND STRUT BAG ON lEA
9 ---->EV2 Translate to outboard, non-radiator side of lEA, stow strut bag on lEA corner
10 ---->EV1 Stow Cable Bag on lEA Inboard non-radiator corner
11 APFR/WIFEX BUNDLE SETUP
12 ---->EV1 Translate to Stbd CETA Cart WIF01
13 ----> Stow WIFEX/APRF on BRT, Translate to P4 WIF 25
14 ---->EV1 Install WIFEX/APFR in WIF 25 (6, G, 5) APFR to (12, TT, F, 12)
15 RIGHT UPPER STRUT TO MOUNTING BRACKET
16 ---->EV2 Open Strut Bag, Retrieve Mounting Bracket and Right Upper Strut
17 ---->EV2 align Right Upper Strut L7 to Mounting Bracket Right Side, drive M13, M14
18 LEFT UPPER STRUT TO CENTER PAD
19 ---->EV2 retrieve Left Upper Strut, align Upper Left Strut L2 to Center Pad L2, drive M17
20 ---->EV2 drive M15, then M16 to torque, then M15 to torque
21 TORQUE RIGHT UPPER STRUT TO MOUNTING BRACKET
22 ---->EV2 PGT[B3,CW2,30.5] Drive M13, M14 to torque and tend PGT to Strut Bag
23 ---->EV2 Translate to Cable Bag, get IROSA Cables and Stow on Mounting bracket
24 UPPER TRIANGLE TO MAST CANISTER
25 ---->EV1 Ingress APFR, Install Center Pad on Mast Canister, Drive M5-M8
26 INSTALL RIGHT LOWER STRUT
27 ---->EV1 Egress APFR, reposition to lEA Keel Pin/A-Frame
28 ---->EV2 Translate to WIFEX APFR, WIFEX [6, G, 1] APFR [12, PP, C, 12]
29 ---->EV1 Ingress APFR, Verify Access, Release Mounting Bracket RET
30 ---->EV1 Recieve Right Mid Strut from EV2
31 ---->EV1 Recieve Right Lower Strut from EV2, clevis toward EV1
32 ----> EV2 Translate to Left SABB spherical Bearing, Drive M19
33 ---->EV1 Align Lower Strut L6 with Mounting Bracket L6, Drive M20
34 ---->EV2 Torque M19
35 ---->EV1 Torque M20
36 ---->EV1 Install Lower Strut Grounding PIP Pin to Mounting Bracket Grounding Block
37 INSTALL RIGHT MID STRUT
38 ---->EV2 Translate to Side Pad location on Right side of Mast Canister
39 ---->EV1 Retrieve Mid Strut from BRT, extend Side Pad, tend towards Mast Canister
40 ---->EV2 Install Side Pad on Mast Canister, Drive M9-M12
41 ---->EV1 align Mid Strut L5 to Upper Strut L5, Start Bolt M24
42 ---->EV2 drive M9-12 to torque
43 ---->EV1 drive M24, stow PGT
44 ---->EV1 install Mid Strut PIP Pin to Grounding Block
45 INSTALL LEFT LOWER STRUT
46 ---->EV2 Translate to Strut bag, Retrieve left Mid Strut
47 ---->EV1 Recieve Left Mid Strut from EV2
48 ---->EV1 Recieve Left Lower Strut from EV2, clevis toward EV1
49 ---->EV2 Translate to APFR adjust [12, PP, H, 12]
50 ---->EV2 Translate to Left SABB spherical Bearing, Drive M21
51 ---->EV1 Align Lower Strut Clevis with Mounting Bracket L5, Drive 22
52 ---->EV2 Drive M21 to Torque
53 ---->EV1 Drive M22 to torque, install PIP Pin into Block on Mounting Bracket
54 INSTALL LEFT MID STRUT
55 ---->EV2 Translate to Left Side Pad installation location
56 ---->EV1 Retrieve Left Mid strut from BRT, extend Side Pad, tend towards Mast Canister
57 ---->EV2 Install Side Pad on Mast Canister, Drive M1-M4
58 ---->EV1 align Mid Strut L6 to Upper Strut L6, Start Bolt M28
59 ---->EV2 drive M1-4 to torque
60 ---->EV1 drive M28 to torque, stow PGT
61 ---->EV1 install Mid Strut Grounding PIP Pin to Mounting Bracket Grounding block
62 LEFT MID STRUT COLLAR
63 ---->EV2 Adjust body position to reach Mid Strut Collar, drive M29 and M30 to Torque
64 ---->EV2 Set PGT to MTR and stow
65 STRUT BAG CLEANUP
66 ---->EV1 Egress APFR and stow PGT and Torque wrench inside strut bag
67 ---->EV1 Stow strut bag inside cable bag
68 ---->EV2 Translate to Right Mid Strut
69 RIGHT MID STRUT COLLAR
70 ---->EV2 drive M26, M25 PGT [B7, CW2, 30.5] to torque and stow, set PGT to RCW and final torque
71 ---->EV2 Set PGT to MTR and stow
72 MID STRUTS MLI
73 ---->EV1 EV2 Install Mid Strut MLI
74 IROSA CABLE ROUTING
75 ---->EV1 Route Left IROSA cables towards Left SAW connector panel
76 ---->EV2 Route Right IROSA cables towards Right SAW connector panel
77 APFR/WIFEX RELOCATE
78 ---->EV1 Translate to APFR, retrieve and stow on BRT
79 ---->EV1 Translate to P3 WIF 10, install APFR [12, PP, H, 12]
80 ---->EV2 Translate to WIFEX and stow on BRT
81 C2V2 BOOM
82 ---->EV2 Translate inboard to P3 aft C2V2 Boom
83 ---->EV1 Translate outboard to P3 Aft C2V2 Boom
84 ---->EV2 Release Wire Ties Securing Cable Bundle to HR 3829
85 ---->(OPTIONAL) EV2 temp stow WIFEX with AET on HR 3829 or Install in WIF 25
86 ---->EV2 RET to and Release C2V2 Stantchtion from WIF, Hold Inboard
87 ---->EV1 Install WIFEX in WIF 17 [3,A,1]
88 ---->EV2 Install C2V2 in WIFEX
89 ---->Re-coil Cables and Secure in Wire Tie on HR 3829
90 CLEANUP/INGRESS
91 ---->EV2 Retrieve Cable Bag from [EA stow on BRT
92 ---->EV1 Translate to Airlock
93 ---->EV2 Translate to Airlock
94 ---->EV2 Open Hatch Thermal Cover
95 ---->EV2 Ingress Airlock Stow Cable Bag in Airlock
96 ---->EV1 Ingress Airlock, Close Thermal Cover

Early DOUG EVA Get Aheads

Quote from: Produced on 4/15 by CNG - Based on: US_EVA_IROSA_Prep_2A_v26.pkg

3 EGRESS
2.3 P6 DDCU JUMPER SETUP (EV2)
2.4 ---->EV2 Remove P6 DDCU Jumper and Cannon Connector Tool from Cable Bag
2.5 ---->EV2 Translate to P6 HR 5308
2.6 ---->EV2 Tether to Dummy Caps J158 J157
2.7 ---->EV2 Install Canon Connector Tool, rot 90 deg and Remove Caps
2.8 ---->EV2 Mate New Jumper Connectors to J157 and J158 (rot 90 deg to hard stop)
2.9 ---->EV2 Translate to Cable bag
2.10 ---->EV2 Stow Dummy Caps and Cannon Connector Tool
2.11 P4 MMOD Cover Bolt Release
2.12 ---->EV Translate to P4 MMOD Cover Bolt 3, BRT to HR 5125
2.13 ---->EV Press inward on MMOD Cover, Inspect Reaction, Inspect Bolt 3
2.14 ---->EV PGT [B2, CCW2, 30.5] Release and report torque Bolt 3 (2 turns)
2.15 ----> [IF BOLT 3 FULLY BACKED OUT]
2.16 ->EV Translate to Bolt 4, Inspect, reset torque, release and report (2 turns)
2.17 ---->[ELSE]
2.18 ->EV Translate to Bolt 4. Inspect, reset torque, release and report torque (9 turns)
2.19 ---->EV Translate to Bolt 1, Inspect, reset torque, release and report (2 turns)
2.20 ---->EV Translate to Bolt 2, Inspect, reset torque, release and report (2 turns)
2.21 P4 4A ORU TORQUE RESET
2.22 ---->EV Translate to P4 4A lEA
2.23 ---->EV Reset Torque on PFCS: H3, H4, Ratchet Release, PGT [A6, CW2, 30.5] Drive
2.24 ---->EV Reset Torque on DC SU: H2, Ratchet Release, PGT [A6, CW2, 30.5] Drive
2.25 ---->EV Reset Torque on DDCU: H1, H2, Ratchet Release, PGT [A6, CW2, 30.5] Drive
2.26 ---->EV Reset Torque on BCDU 4A1: H1, H2, Ratchet Release, PGT [A6, CW2, 30.5] Drive
2.27 P4 2A ORU TORQUE RESET
2.28 ---->EV Translate to P4 lEA, PGT [A6, CW2, 30.5]
2.29 ---->EV Reset Torque on BCDU 2A1: H1, H2, Ratchet Release, PGT Drive
2.30 ---->EV Reset Torque on BCDU 2A2: H1, H2, Ratchet Release, PGT Drive
2.31 ---->EV Reset Torque on BCDU 2A3: H1, H2, Ratchet Release, PGT Drive
2.32 ---->EV Reset Torque on DDCU: H1, H2, Ratchet Release, PGT Drive
2.33 ---->EV Reset Torque on DC SU: H1, H2, Ratchet Release, PGT Drive
2.34 ---->EV Reset Torque on PFCS: H3, H4, Ratchet Release, PGT Drive
2.35 FHRC STRUT TIE-BACK
2.36 ---->EV Translate to Port FHRC in Bay 12
2.37 ---->EV Remove Nadir Launch Support Strut, Release Nadir Strut Bolt PGT [B7, CCW2, 30.5]
2.38 ---->EV Rotate Strut Outboard, Use Wire Tie to Secure around BAXS
2.39 ---->EV Reposition to Zenith Support Strut
2.40 ---->EV Remove Zenith Launch Support Strut, Release Zenith Strut Bolt PGT [B7, CCW2, 30.5]
2.41 ---->EV Rotate Strut Outboard, Use Wire Tie to Secure around BAXS-
2.42 ---->EV Egress Truss

ddspaceman · « **Reply #9 on:** 04/15/2025 07:56 pm »

NASA's Johnson Space Center
@NASA_Johnson
Anne McClain and Nichole Ayers are preparing to embark on a spacewalk to ready the @Space_Station for a new rollout solar array! 🧑‍🚀

Check out the blog: https://go.nasa.gov/4jehjKf

https://twitter.com/NASA_Johnson/status/1912169538910638381

Targeteer · « **Reply #10 on:** 04/16/2025 08:55 am »

Anne and Vapor are in the airlock working with the IROSA hardware. The EVA controller on duty is working with the crew directly, somewhat rare to be bypassing CAPCOM for internal operations.

Targeteer · « **Reply #11 on:** 04/18/2025 05:14 pm »

Anne and Vapor conducted suit check out and fit checks this morning.

Targeteer · « **Reply #12 on:** 04/18/2025 07:28 pm »

Two NASA astronauts will venture outside the International Space Station, conducting U.S. spacewalk 93 on Thursday, May 1, to complete station upgrades.

NASA will preview the upcoming spacewalk during a news conference at 2 p.m. EDT on Thursday, April 24, on the agency’s website from NASA’s Johnson Space Center in Houston. Learn how to watch NASA content through a variety of platforms, including social media.

Participants in the news conference include:

· Bill Spetch, operations integration manager, International Space Station Program

· Diana Trujillo, spacewalk flight director, NASA Johnson

Media interested in participating in person or by phone must contact the Johnson newsroom no later than 10 a.m. on Wednesday, April 23, at: 281-483-5111 or [email protected]. To ask questions, media must dial in no later than 15 minutes prior to the start of the news conference. Questions also may be submitted on social media using #AskNASA.

The spacewalk is scheduled to last about six and a half hours. NASA will provide additional information, including live NASA+ coverage details, when available.

NASA astronauts Anne McClain and Nichole Ayers will relocate a space station communications antennae and install a mounting bracket ahead of the installation of an additional set of International Space Station Rollout Solar Arrays, also called IROSA. The arrays will boost power generation capability by up to 30%, increasing the station’s total available power from 160 kilowatts to up to 215 kilowatts. The arrays will be installed on a future spacewalk following their arrival on a SpaceX Dragon commercial resupply services mission later this year.

McClain will serve as spacewalk crew member 1 and will wear a suit with red stripes. Ayers will serve as spacewalk crew member 2 and will wear an unmarked suit. This will be the third spacewalk for McClain and the first for Ayers. U.S. spacewalk 93 will be the 275th spacewalk in support of space station assembly, maintenance, and upgrades.

Learn more about International Space Station research and operations at:

https://www.nasa.gov/station

Targeteer · « **Reply #13 on:** 04/19/2025 09:40 am »

https://x.com/Astro_Ayers/status/1913390823942586570

Lots of EVA (spacewalk) prep this week!

We resized the spacesuits to fit @AstroAnnimal and me (pic 1), cleared out the suits and gear we won’t need in the airlock for this EVA (pics 2 & 3), and spent some time getting familiar with the modification kit we’ll be installing.

We also packed all the parts into a bag that I’ll carry with us out to the work site (pic 4). We’re affectionately calling it EV3 because it’s about 8 feet long and weighs around 300 lbs! It’ll be slow and steady for me as I carry it out to the base of the solar arrays.

SMS · « **Reply #14 on:** 04/22/2025 06:19 pm »

EV1 (Red Stripe):
Anne McClain
EMU #3003

EV2:
Nichole Ayers
EMU #3015

Targeteer · « **Reply #15 on:** 04/23/2025 05:39 pm »

The crew has been directed to replace O ring T-8 on SCU 2 due to damage identified by the ground in photos taken by the crew.

Targeteer · « **Reply #16 on:** 04/23/2025 05:41 pm »

Quote from: SMS on 04/22/2025 06:19 pm

EV1 (Red Stripe):
Anne McClain
EMU #3003

EV2:
Nichole Ayers
EMU #3015

I didn't catch 3015 being installed in the airlock, 3013 was last installed with 3003, and don't remember it being used recently. Was it brought up recently?

Targeteer · « **Reply #17 on:** 04/24/2025 12:07 pm »

An EMU swap is underway in the airlock. No suit numbers heard. The mini work station is being moved so I don't think this is a swap to perform periodic maintenance on a suit not being used for the EVA.

dsmillman · « **Reply #18 on:** 04/24/2025 06:30 pm »

It appears that the Youtube stream for the EVA-93 preview press conference was fouled up.
If someone sees an archive of the press conference please post the link.

ChrisC · « **Reply #19 on:** 04/24/2025 06:38 pm »

Oh, so the press conference actually happened? I was waiting for that Youtube stream to start, and when it didn't I assumed that it had been cancelled:

According to https://www.nasa.gov/live/ :

Quote

Thursday, April 24
2 p.m. | News conference on U.S. spacewalk 93 at the International Space Station. Stream on YouTube
Editor’s Note: We are experiencing technical difficulties. A recording of this event will be shared here once available.