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US EVA 89 - Nov 01, 2023 ( O’Hara and Moghbeli)
by
Targeteer
on 03 Oct, 2023 17:20
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Oct. 3, 2023
MEDIA ADVISORY: M23-126
NASA Sets Coverage of Spacewalks, News Conference for Station Upgrades
Two upcoming spacewalks outside the International Space Station to conduct science research and station maintenance will feature NASA astronauts, both first-time spacewalkers.
NASA astronaut Loral O’Hara will participate in spacewalks on Thursday, Oct. 12, and Friday, Oct. 20, with ESA (European Space Agency) astronaut Andreas Mogensen joining her on the first, and NASA astronaut Jasmin Moghbeli joining her on the second.
Agency experts will preview the spacewalks during a news conference at 1 p.m. EDT on Friday, Oct. 6, from NASA’s Johnson Space Center in Houston.
Live coverage of the news conference and spacewalks will air on NASA Television, the NASA app, and the agency’s website.
News conference participants are:
• Dana Weigel, deputy manager, International Space Station Program, NASA Johnson
• Elias Myrmo, spacewalk flight director, NASA Johnson
• Faruq Sabur, U.S. spacewalk 89 officer, NASA Johnson
• Sandra Fletcher, U.S. spacewalk 90 officer, NASA Johnson
Media interested in participating in person or by phone must contact the Johnson newsroom no later than 10 a.m., Friday, Oct. 6, by calling 281-483-5111 or emailing
[email protected]. To ask questions by phone, reporters must dial into the news conference no later than 15 minutes prior to the start of the call. Questions may also be submitted on social media using #AskNASA.
The first spacewalk is scheduled to begin at 10 a.m. and last about six hours with NASA TV coverage beginning at 8:30 a.m.
On Oct. 12, O’Hara and Mogensen will exit the station’s Quest airlock to collect samples for analysis to see whether microorganisms may exist on the exterior of the orbital complex. They also will replace a high-definition camera on the port truss of the station and conduct other maintenance work to prepare for future spacewalks.
O’Hara will serve as extravehicular activity (EVA) crew member 1 and will wear a suit with red stripes. Mogensen will serve as extravehicular crew member 2 and will wear an unmarked suit. U.S. spacewalk 89 will be the first spacewalk for both crew members.
On Oct. 20, O’Hara and Moghbeli will complete the removal of a faulty electronics box, called a Radio Frequency Group, from a communications antenna on the starboard truss of the station and replace one of twelve Trundle Bearing Assemblies on the port truss Solar Alpha Rotary Joint. The bearings enable the station’s solar arrays to rotate properly to track the sun as the station orbits the Earth. During this spacewalk, Moghbeli will serve as EVA crew member 1 and O’Hara will serve as EVA crew member 2. U.S. spacewalk 90 will be the first spacewalk for Moghbeli and second for O’Hara.
The second spacewalk will begin at 7:30 a.m. and last approximately six and a half hours with NASA TV coverage beginning at 6 a.m.
Get breaking news, images and features from the space station on the station blog, Instagram, Facebook, and X.
Learn more about International Space Station research and operations at:
https://www.nasa.gov/station
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#1
by
cohberg
on 03 Oct, 2023 17:56
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ISS US EVA 89 - S band RFG Retrieve IIRFG Retrieve + TBA replacement
DOUG EVA Movie
DOUG EVA Steps
EVA 90
1.1 Pre EVA Configuration
1.3 EGRESS
1.4 ---->EV1 Open Thermal Cover and Egress AIL
1.5 ---->EV2 Transfer Crewlock Bag P to EV1, EV1 stow on BRT
1.6 ---->EV2 Transfer Large ORU Bag to EV1
1.7 ---->EV2 Egress AIL, Receive Lg ORU Bag from EV1 and stow on BRT
1.8 ---->EV1 Close AIL Thermal Cover
1.9 ---->Translate out to GREEN hook locations (MM 9180)
1.10 ---->EV2 Stow GREEN Hook on P1 HR 3651
1.11 ---->EV1 Stow GREEN Hook on P1 HR 3652
1.12 ---->EV2 Translate to Port SARJ
1.13 H-FIXTURE REMOVAL (EV1)
1.14 ---->Translate out to P4 2A Mast Canister
1.15 ---->Retrieve PGT with 7116 inch Wobble
1.16 ---->Use PGT to Release H-Fixture Bolts (exactly 1 turns)
1.17 ---->Use PGT to Release H-Fixture Bolts (exactly 11 turns)
1.18 ----> Stow PGT
1.19 ---->Remove H-Fixture, stow in Crewlock Bag P
1.20 ---->Photograph GSE Pad
1.21 ----> Stow Crewlock Bag P on BRT
1.22 BGA SURVEY (EV1)
1.23 ---->Translate to Long HR on Mast Canister left side
1.24 ---->HECA scan GSA Pad Interface, Photograph left side GSE Pad Interface
1.25 ---->Translate to HR on A-frame (near keel pin)
1.26 ---->HECA scan Center Pad Interface, Photograph Center Pad Interface
1.27 ---->Translate to base of A-Frame
1.28 ---->HECA scan SABB Interface, Photograh SABB Interface
1.29 ----> Stow Camera in Crewlock Bag P, Stow on BRT
1.30 CP8 ETHERNET CABLE UNTWIST (EV1)
1.31 ---->Translate to CP8 Worksite, Stow Crewlock Bag P on P1 HR 3681
1.32 ---->Demate P1 <- -> J1 Untwist cable movin I excess slack down to race rini Mate P1 -> <- J1
1.33 ---->Translate to HR 3683 and perform HECA scan
1.34 ---->Retrieve Crewlock Bag P from P1 HR 3681, stow on BRT
1.35 SSRMS and ESP-2 SETUP (EV1)
1.36 ---->Translate to Airlock
1.37 ---->Retrieve Crewlock Bag R, Stow on BRT
1.38 ---->Translate to ESP-2 Worksite, Temp stow Crewlock Bag R on ESP-2 HR 8007
1.39 ---->Remove 1/4-turns fasteners
1.40 TBA REMOVE (EV2)
1.41 ----> Stow Large ORU Bag on top of Cover 1
1.42 ---->Translate and BRT to PSARJ HR 3865
1.43 -->Use PGT with 6 inch wobble
1.44 ---->Release SARJ Cover Bolts 113, 1A (exactly 9 turns)
1.45 ---->Release SARJ Cover Bolts 2A, 2B, 3B (exactly 9 turns)
1.46 ---->Temp stow removed SARJ Cover near P3 HR 3864
1.47 ---->Preposition TBA Bag bundle for access
1.48 ---->Demate TBA Connector P1 (P1 <-1-> Inboard SARJ Ring)
1.49 ---->Mate (SARJ Low Profile Cap ->1<- SARJ Recepticle Jack)
1.50 ---->Mate (NZGL Cap ->1<- TBA NZGL Connector)
1.51 ---->Install French Hook (1) from TBA Bag labeled Degraded on Bearing Package
1.52 ---->Retrieve PGT with 6 inch wobble
1.53 ---->Using PGT Break torque on TBA Bolts 3,1,2 (exactly 1 turns)
1.54 ---->Using PGT Release TBA Bolt 3 (exactly 1 turns)
1.55 ---->Using PGT Release TBA Bolt 1 (exactly 6 turns)
1.56 ---->Using PGT Release TBA Bolt 2 (approx 14 turns)
1.57 ----> Stow PGT
1.58 ---->Remove Bearing Package, Stow in TBA bag labeled Degraded
1.59 ---->Install other French Hook from TBA Bag labled Degraded on Mount Package
1.60 ---->Using PGT Release Bolt 3 (approx 4 turns)
1.61 ---->Remove mount from race ring, Stow in TBA Bag labeled Degraded
1.62 LUBE OUTBOARD RACE RING (EV2)
1.63 ---->Take photos of Outboard SARJ Race Ring
1.64 ---->Retrieve and Prep J-Hook Noule Grease Gun
1.65 ---->Use J-Hook noule gun to grease inner canted surface of outboard ring
1.66 ----> Stow J-Hook Noule Grease Gun between TBA Bags
1.67 ---->Retrieve and Prep Straight Noule Grease Gun
1.68 ---->Use straight noule gun to grease Outer Canted and Datum A surfaces
1.69 ----> Stow Straight Noule Grease Gun between TBA Bags
1.70 TBA INSTALL (EV2)
1.71 ---->Open TBA Bag labled Spare, Retrieve Mount Package of Spare TBA
1.72 ---->Engage mount onto inboard race ring
1.73 ---->Drive by hand Bolt 3 while holding clamping leg closed (exactly 2 turns)
1.74 ---->Retrieve bearing package from Spare TBA Bag, Engage bearing onto mount
1.75 ---->Using PGT drive Bolt 2 (-14 turns)
1.76 ---->Using PGT Drive Bolt 1 to torque (approx 5-6 turns)
1.77 ---->Using PGT drive Bolt 3 (approx 4-5 turns)
1.78 ---->Demate (SARJ Inboard receptacle <-1-> Low Profile Cap), Stow in TBA Bag Spare
1.79 ---->Demate NZGL Cap off of Bearing Package NZGL
1.80 ---->Mate (TBA NZGL ->l<- SARJ Inboard recetacle)
1.81 ---->HECA Survey of TBA Worksite
1.82 ---->Retrieve SARJ Cover 2
1.83 ---->Drive by hand to turns MLI Cover Bolts 3A, 3B, 2A, 2B, Report turns (exactly 1 turns)
1.84 ---->Using PGT with 6 inch wobble, Drive to toque bolts 3A, 3B, 2A, 2B
1.85 ---->Using PGT with 6 inch wobble, Drive bolts 1A, 1B (exactly 1 turns)
1.86 ---->Drive bolts 1A, 1B to torque (2-8 turns), Stow PGT
1.87 ---->Retrieve ORU Bag and stow on BRT
1.88 ->ESP-2 SETUP (EV2)
1.89 ---->Translate to Airlock, Stow Large ORU Bag on A/L Toolbox HR
1.90 ---->Translate to ESP-2 Worksite
1.91 ---->Remove 1/4-turns fasteners-
1.92 ---->Remove MLI Tent from SASA
1.93 ---->Perform baseline inspection of white paint on RFG
1.94 ---->Verify Stachion Cables P1, P9, J1, and J9
1.95 ---->Perform RTV inspection of Wedge Clamp Nuts
1.96 ----> Swap 3/8 inch Deep Socket on Socket Cady with 7/16 inch Wobble Socket on PGT
1.97 ---->Relocate Crewlock Bag R to SASA FRAM HR
1.98 ->SSRMS SETUP (EV1)
1.99 ---->Translate to ESP2 WIF 5
1.100 ---->Retrieve APFR
1.101 ---->On EV1 GO, SSRMS maneuver to APFR Install and Ingress Position
1.102 ---->On SSRMS GO, Install APFR in SSRMS [12,PP,L,6]
1.103 ---->Ingress APFR
1.104 ---->On EV1 GO, SSRMS maneuver to RFG Aft Backoff position
1.105 ---->On EV1 GO, SSRMS maneuver to RFG Approach position
1.106 RFG WEDGE CLAMP RELEASE
1.107 ---->EV1 Remove excess RN from Wedge Clamp Nuts
1.108 ---->EV2 Retrieve EVA Ratchet from Crewlock Bag R, transfer to EV1
1.109 ---->EV2 Retrieve RFG Wrench from Crewlock Bag R
1.110 ---->EV2 Hold RFG Wrench on Bolt Heads as EV1 uses Ratchet to loosen Wedge Clamps (exactly 4 turns each)
1.111 ---->EV1 Transfer EVA Ratchet Wrench to EV2, EV2 stow Ratchet Wrench and RFG Wrench in Crewlock Bag R
1.112 ---->EV2 Position to view RFG release from Stanchion
1.113 ---->EV1 give SSRMS GO for GCA to published RFG Aft Backoff position
1.114 ---->EV1 give SSRMS GO for maneuver to RFG Unstow Backoff position
1.115 ---->EV1 give SSRMS GO for GCA to published RFG Retrieval position
1.116 ---->SSRMS give EV1 GO for RFG removal
1.117 RFG REMOVE
1.118 ---->EV1 Use PGT with 7/16 Rigid to Release RFG Structural Bolts (approx 11 turns)
1.119 ---->EV1 Stow PGT in Swing Arm
1.120 ---->EV1 Remove RFG from Stanchion
1.121 ---->EV1 give SSRMS GO for GCA to clear RFG of stanchion
1.122 ---->EV1 give SSRMS GO for maneuver to Intermediate Position
1.123 ---->EV1 give SSRMS GO for maneuver to Airlock Backoff position
1.124 RFG STOW IN AIL
1.125 ---->EV2 Translate to aft side of AIL, Open Thermal Cover
1.126 ---->EV1 give SSRMS GO to GCA
1.127 ----> S SRM S give EV1 GO for RFG Reorient and RET Swap
1.128 ---->EV1 give SSRMS GO for GCA to align with Airlock and stow RFG
1.129 ---->EV1 give SSRMS GO for maneuver to ESP-2 FWD Backoff position
1.130 ---->EV2 Ingress AIL, Position RFG in Airlock
1.131 ---->EV2 Retrieve Lg ORU Bag from AIL Toolbox, stow in Airlock
1.132 SSRMS and ESP-2 CLEANUP
1.133 ---->EV1 give SSRMS GO for GCA to published APFR Egress and Removal Position
1.134 ---->EV1 on SSRMS GO, egress APFR
1.135 ---->EV1 remove APFR
1.136 ---->EV1 give SSRMS GO for maneuver to EVA Park position
1.137 ---->EV1 Install APFR in ESP-2 WIF 5 [6,PP,F,6]
1.138 ---->EV2 Translate to ESP-2 RFG Worksite
1.139 ---->EV2 Install MLI Tent
1.140 ---->EV1 Translate to Lab HR 0252 to Retrieve Crewlock Bag P
1.141 ---->EV1 Translate to AIL
1.142 ---->EV2 Retreive Crewlock Bag R, stow on BRT
1.143 ---->EV2 Translate to Airlock
1.144 INGRESS
1.145 ---->EV2 Ingress Airlock
1.146 ---->EV1 transfer Crewlock Bag P to EV2
1.147 ---->EV1 Ingress Airlock
EVA 90 - Get Aheads
2.1 Pre EVA Configuration
2.3 SSRMS ELBOW JOINT PREP (EV2)
2.4 ---->Translate to spare LEE Joint on ESP-2 MUZenith
2.5 ---->Release MLI to access Expandable Diameter Fastener's (EDF's)
2.6 ---->Reposition for driving EDFs
2.7 ---->Use PGT [B7, CCW2, 30.5] to Release EDFs 4, 5, and 6 (approx 5.5 turns each)
2.8 ---->Pull lanyards for EDFs 4, 5, and 6
2.9 ---->Fully insert EDFs 4, 5, and 6 back into their respective receptacles
2.10 ---->Verify spare joint angle at 0 degrees
2.11 ---->Translate to aft side of spare joint (pitch joint bolt)
2.12 ---->Move release handle from MOTOR to EVA
2.13 ---->Use PGT [Al, CCW2, 30.5] with 2" Rigid, Drive Pitch Joint Bolt (approx 20 turns)
2.14 ---->Verify spare joint angle at 6 degrees
2.15 ---->Stow PGT in swing arm
2.16 ---->Move release handle from EVA back to MOTOR
2.17 ---->Cover spare joint with MLI
2.18 ---->Translate to AIL
2.19 4A (P4) ORU TORQUE RESET (EV1)
2.20 ---->Translate to P4 4A lEA, temp stow bag(s)
2.21 ---->Retrieve Ratchet Wrench with 7116 x 6 inch Wobble
2.22 ->RE SET TORQUE ON PFCS
2.23 ---->Release with Ratchet Wrench H3, and H4 with no more than half a turn (0.25-0.5 turns)
2.24 ---->Use PGT [A6, CW2, 30.5] to drive bolts H4, and H3 (less than 1 turns)
2.25 ->RE SET TORQUE ON DCSU
2.26 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.27 ---->Use PGT [A6, CW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.28 ->RE SET TORQUE ON DDCU
2.29 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.30 ---->Use PGT [A6, CW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.31 ->RE SET TORQUE ON BCDU 4A1
2.32 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.33 ---->Use PGT [A6, CW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.34 ----> Stow PGT in swing arm, and Ratchet Wrench and/or Scoop in Crewlock Bag
2.35 ---->Translate to AIL
2.36 (P4) TORQUE RESET
2.37 ---->Translate to P4 2A [EA, temp stow bag(s)
2.38 ---->Retrieve Ratchet Wrench with 7/16 x 6 inch Wobble
2.39 ->RE SET TORQUE ON BCDU 2A1
2.40 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.41 ---->Use PGT [A6, CCW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.42 ->RE SET TORQUE ON BCDU 2A2
2.43 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.44 ---->Use PGT [A6, CCW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.45 ->RE SET TORQUE ON BCDU 2A3
2.46 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.47 ---->Use PGT [A6, CCW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.48 ->RE SET TORQUE ON DDCU
2.49 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.50 ---->Use PGT [A6, CCW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.51 ->RE SET TORQUE ON DCSU
2.52 ---->Release with Ratchet Wrench H1, and H2 with no more than half a turn (0.25 - 0.5 turns)
2.53 ---->Use PGT [A6, CCW2, 30.5] to drive bolts H2, and H1 (less than 1 turns)
2.54 ->RE SET TORQUE ON PFCS
2.55 ---->Release with Ratchet Wrench H3, and H4 with no more than half a turn (0.25-0.5 turns)
2.56 ---->Use PGT [A6, CW2, 30.5] to drive bolts H4, and H3 (less than 1 turns)
2.57 ----> Stow PGT in swing arm, and Ratchet Wrench and/or Scoop in Crewlock Bag
2.58 ---->Translate to AIL
2.59 RELEASE P4 MMOD COVER BOLTS
2.60 ---->Translate to P4 MMOD Cover Bolt 3
2.61 ---->Release Bolts 3, 4, 1, 2
2.62 ---->Translate to A/L
2.63 P1 FHRC LAUNCH STRUT RELEASE / TIE-BACK
2.64 ---->Translate to P1 FHRC
2.65 ---->Release, Tie Back Launch Struts
2.66 ---->Translate to A/L
2.67 SWAPOUT SUSPECT AETs FROM QD BAG (EV1)
2.68 ---->Translate to A/L zenith
2.69 ---->Retrieve/replace old AETs with new AETs from Crewlock Bag
2.70 ---->Translate to crewlock
2.71 CETA CART BRAKE HANDLE RESET (EV1)
2.72 ---->Translate to Stbd CETA Cart Dynamic Brake Handle (Nadir and port Brake Handle)
2.73 ---->Re-engage CETA Cart Brake Handle Locking Collar
2.74 ---->Translate to A/L
Abbreviations
TBA - Trundle Bearing Assembly
RFG - Radio Frequency Group
EVA ToolsEVA Grease Gun
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Relevant Reading
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#2
by
sdsds
on 03 Oct, 2023 21:02
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ISS US EVA 89 - Microorganisms
Fascinating! From one of the linked pdf files, this:
Traces of Barents Sea plankton, bacteria from Madagascar found on ISS surface, TASS, 29 May 2017
Is there another thread for more general discussion of extremophile bacteria, etc.?
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#3
by
Targeteer
on 03 Oct, 2023 22:00
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Jasmine apparently loved being in the EMU today so much CAPCOM jokingly told her she couldn't sleep in it
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#4
by
vp.
on 04 Oct, 2023 11:00
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#5
by
AnalogMan
on 04 Oct, 2023 13:50
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https://www.esa.int/Science_Exploration/Human_and_Robotic_Exploration/First_spacewalk_for_Andreas_Mogensen
"Afterwards both astronauts will move to the Alpha Magnetic Spectrometer (AMS-02) and check a new tool to connect and disconnect cables to the AMS This will prepare the future upgrade of AMS-02."
Does anyone have any information on the upcoming AMS upgrade?
Boeing’s Mulholland Urges Vocal Advocacy for ISS Amid Budget Gloomhttps://spacepolicyonline.com/news/boeings-mulholland-urges-vocal-advocacy-for-iss-amid-budget-gloom/August 1, 2023
Mulholland also said increased funding is needed to maximize the amount of research conducted on ISS including an upgrade to the Alpha Magnetic Spectrometer-02, or AMS-02, cosmic ray detector that is seeking clues to the nature of dark matter. AMS-2 was installed on the outside of the ISS in 2011 and astronauts repaired the coolant system during four spacewalks in 2019-2020. Mulholland said
an “amazing upgrade that will essentially double the science capability” is planned but will require “almost an entire cargo flight to do it and so it deserves a plus-up in the budget ahead.”
10 Years of operating the Alpha Magnetic Spectrometer on the International Space Stationhttps://ep-news.web.cern.ch/content/10-years-operating-alpha-magnetic-spectrometer-international-space-stationSeptember 20, 2022
The operation of the International Space Station has now been extended through 2030. Lately, the AMS Collaboration has started working on the upgrade of the AMS detector to profit of the extended ISS lifetime. Progress on the AMS upgrade activities from both the NASA AMS Project Office and the AMS team were presented at the COSPAR2022 scientific assembly. The upgrade aims at increasing the acceptance of the current AMS detector by a factor 300% to match that of its original design by adding a full-size silicon tracker layer on top of the actual detector (Figure 5 left). The upgrade will allow to extend the positron flux measurement from the current 1.4 TeV to 2 TeV, to extend the electron flux measurement from the current 2 TeV to 3 TeV, and to reduce the uncertainties on both measurements by a factor 2 over the entire energy range.
[...]
The construction of the new tracker layer has already started for a targeted launch and installation on the AMS detector in 2025.
"Figure 5 : Left: Sketch of the AMS upgrade with an additional full-size silicon tracker layer on top of the current AMS detector, which will increase the current acceptance by 300% bringing it to the original design value. Right: Two examples of the impact of the upgrade: the electron flux measurement will be extended from 2 TeV to 3 TeV (top), and the positron flux measurement will be extended from 1.4 TeV to 2 TeV (bottom), uncertainties on both measurements will be reduced by a factor 2 over the entire energy range."[The new Silicon Tracker Layer is 8m
2 in area]
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#6
by
Yellowstone10
on 04 Oct, 2023 16:18
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
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#7
by
Targeteer
on 04 Oct, 2023 16:43
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Suit check out by Loral and Andy in the airlock. I didn't catch the suit numbers.
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#8
by
Targeteer
on 04 Oct, 2023 16:47
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
My guess would be comm coverage. TDRS Z is still unavailable, TDRS-8 is still using Canberra, and orbital tracks over the Russian ground stations may be more available to use the alternate S Band path (shhh something) used in recent EVAs.
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#9
by
DaveS
on 04 Oct, 2023 18:08
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
My guess would be comm coverage. TDRS Z is still unavailable, TDRS-8 is still using Canberra, and orbital tracks over the Russian ground stations may be more available to use the alternate S Band path (shhh something) used in recent EVAs.
Spaceflight Tracking and Data Network (STDN, pronounced "stayed in")?
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#10
by
Targeteer
on 04 Oct, 2023 22:10
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
My guess would be comm coverage. TDRS Z is still unavailable, TDRS-8 is still using Canberra, and orbital tracks over the Russian ground stations may be more available to use the alternate S Band path (shhh something) used in recent EVAs.
Spaceflight Tracking and Data Network (STDN, pronounced "stayed in")?
Because of the TDRS Z outage, some sort of alternate comm path for S Band voice comms during EVAs is being routed through Russian ground stations. Russian ground coverage conveniently covers the area of -Z loss. It was used and referred to during a previous EVA(s) this summer. I commented on it, I thought, during the EVA but can't find my post(s) reviewing the EVA threads. Earlier this week I heard a Cosmonaut being cleared to disconnect the set up in Node 1, presumably after a test. The Russian name is pronounced Shhhh... something. Maybe a question can asked by someone, hint hint, during the press conference.
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#11
by
Yellowstone10
on 04 Oct, 2023 23:33
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
My guess would be comm coverage. TDRS Z is still unavailable, TDRS-8 is still using Canberra, and orbital tracks over the Russian ground stations may be more available to use the alternate S Band path (shhh something) used in recent EVAs.
I'd been meaning to ask - why does the switch from Guam to Canberra result in a gap in TDRS coverage? Guam's at 145° E, and Canberra's at 149° E, so I wouldn't expect that much of a difference. Does it have to do with the north/south pointing, given that Canberra's further from the Equator?
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#12
by
Targeteer
on 06 Oct, 2023 00:35
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I wonder why this EVA is beginning at 10 am? Usually they start earlier.
My guess would be comm coverage. TDRS Z is still unavailable, TDRS-8 is still using Canberra, and orbital tracks over the Russian ground stations may be more available to use the alternate S Band path (shhh something) used in recent EVAs.
I'd been meaning to ask - why does the switch from Guam to Canberra result in a gap in TDRS coverage? Guam's at 145° E, and Canberra's at 149° E, so I wouldn't expect that much of a difference. Does it have to do with the north/south pointing, given that Canberra's further from the Equator?
As I detailed in other threads, the Guam Ground terminal was heavily damaged by a typhoon in June. Canberra is apparently being used as a stop gap to maintain at least basic command and control/health status monitoring of both TDRS 7 and 8 which otherwise would be out of contact with any suitable ground station. White Sands can't see them which is why the Guam terminal was built to fill the gap between TDRS E and W coverage.
https://www.thespacereview.com/article/3234/1 contains the only graphic I can find depicting the gap. Frequent 10-15 minutes LOS periods covered by TDRS-Z indicate, to me, Canberra connectivity cannot provide normal TDRS S band/audio communications support, just satellite command and control. Experts on this forum can probably explain the details. Canberras normal role is supporting NASA and other agency interplanetary/near earth research missions, not NASA/DOD communication satellites in geosynch...
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#13
by
Yellowstone10
on 06 Oct, 2023 18:25
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YouTube link to today's spacewalk briefing:
And to the spacewalk animation for EVA 89:
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#14
by
Targeteer
on 07 Oct, 2023 00:29
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First, bravo to NASA for the hardware show and tell. It helps bring some clarity. Second, my annoying posts about TDRS-Z unavailability make "comm losses" during ground based SSRMS control a likelihood. Once again, the pathetic interest from space reporters was disappointing.
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#15
by
Yellowstone10
on 07 Oct, 2023 00:51
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I tried asking a few questions on Xwitter via hashtag-ask-NASA as they keep encouraging us to do, but then they proceeded to only take questions from Facebook, alas...
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#16
by
Yellowstone10
on 07 Oct, 2023 03:29
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Some historical context related to the EHDC camera replacement - this seems to be the final step in some work that's been going on across a couple of previous EVAs, to establish better Wi-Fi connectivity on the port side of the station:
- EVA-73 (13 March 2021, with Victor Glover and Mike Hopkins): they ran Ethernet cables from the rat's nest on the back of the S0 Truss / US Lab area out towards Camera Ports 8 and 9 at the end of the P1 Truss. The CP9 cable was tied off at the base of the lower camera stanchion, while the CP8 cable reel was left partway along its route.
- EVA-80 (23 March 2022, with Raja Chari and Matthias Maurer): they finished routing the CP8 Ethernet cable out to the upper camera stanchion, installed a new EHDC at CP8 with a built-in Wi-Fi access point, and connected the camera to the Ethernet cable.
Now with EVA-89, they will install a new camera with built-in WAP at CP9 and finally attach it to the cable that Glover left there two and a half years ago. (Longest Ethernet installation job ever, but given how hard it is to get to the worksite, I think they get a pass...) Interestingly, the high-def camera that's currently at CP9 (which was installed back on EVA-45 on 10 October 2017 by Bresnik and Vande Hei) currently sends its video feed wirelessly via the new camera/WAP at CP8!
An article about the setup:
https://www.wi-fi.org/beacon/chatwin-lansdowne/nasa-astronauts-install-the-ninth-wi-fi-access-point-outside-space-station
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#17
by
Yellowstone10
on 07 Oct, 2023 04:18
-
Kind of off-topic from this specific EVA, but while I'm going down the rabbit hole of Wi-Fi access points on Station - it turns out that the camera that now provides the Live High-Definition Views from the ISS feed on YouTube is primarily there to serve as a WAP, with the camera being more of a fringe benefit. That's why it never pans or tilts. And after reading about its installation on EVA-67 (by Chris Cassidy), I finally worked out where the thing actually is - as pointed out by the red arrow in this photo from Woody Hoburg on one of his recent EVAs.
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#18
by
zubenelgenubi
on 09 Oct, 2023 23:02
-
Might this EVA be delayed to better assist inside with the MLM radiator leak? Or use SSRMS and/or Dextre for same?
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#19
by
litton4
on 10 Oct, 2023 17:20
-
....or even postponed if there's a risk of toxic? coolant flying around?
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#20
by
eeergo
on 10 Oct, 2023 17:24
-
....or even postponed if there's a risk of ammonia flying around?
Do we know the coolant fluid is ammonia? The Soyuz and Progress loops used other substances.
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#21
by
litton4
on 11 Oct, 2023 07:39
-
I've seen it described as "toxic". I'll amend my post
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#22
by
FutureSpaceTourist
on 11 Oct, 2023 13:59
-
https://twitter.com/cbs_spacenews/status/1712099056187478049US EVA-89: A planned spacewalk Thursday by ISS astronauts Loral O'Hara and Andreas Mogensen has been called off to give engineers more time to assess any possible impacts due to a coolant leak Monday in a Russian lab module radiator (1/2)
https://twitter.com/cbs_spacenews/status/1712100343914418501 US EVA-89: The spacewalk likely will slip a week or so, but a date won't be set until engineers complete their review; no major issues are anticipated, but the EVA is not considered "urgent," officials say, and the slip poses no major impact (2/2)
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#23
by
Targeteer
on 11 Oct, 2023 21:45
-
NASA PA has finally spoken
https://blogs.nasa.gov/spacestation/2023/10/11/spacewalks-postponed-as-managers-review-leak-data/Spacewalks Postponed as Managers Review Leak Data
NASA engineering and flight control teams are continuing to review data and video associated with a coolant leak from a backup radiator on the station’s Nauka multipurpose laboratory module (MLM). Two United States segment spacewalks originally scheduled for Thursday, Oct.12, and Friday, Oct. 20, have been postponed until the review is complete. New dates will be announced later.
The leak has now ceased, as was reported by Roscosmos flight controllers and evidenced by NASA external station camera views, which show only residual coolant droplets.
The primary radiator on Nauka continues to work normally, providing full cooling to the module with no impacts to the crew or to space station operations.
The backup radiator was delivered to the space station on the Rassvet module during space shuttle mission STS-132 in 2010. It was transferred to the Nauka during a Roscosmos spacewalk in April.
Teams on the ground continue to investigate the cause of the leak, and additional updates will be made as soon as available.
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#24
by
Targeteer
on 12 Oct, 2023 10:41
-
Jaws is starting any activity to swap out the two EMUs currently in the airlock for 3003 and 3009. No details on why this is being done but she asked about the plans for 3009. EVA is not on console yet so an answer is pending.
Update--Satoshi is doing SAFER related practice and clarification is to use suits already in the airlock
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#25
by
Targeteer
on 12 Oct, 2023 22:41
-
Spacewalks Rescheduled as NASA Reviews Leak Data
NASA astronaut Loral O'Hara is pictured trying on her spacesuit and testing its components aboard the International Space Station ahead of an upcoming spacewalk.
Two United States operating segment spacewalks outside the International Space Station have been rescheduled for no earlier than Thursday, Oct. 19, and Monday, Oct. 30, as a result of ongoing review by NASA managers and engineers after a coolant leak from a backup radiator on the station’s Nauka multipurpose laboratory module.
The spacewalks were deferred from their original target dates to allow engineers additional time to complete their analysis of the coolant leak, which occurred on Oct. 9 and has now stopped.
During the first spacewalk NASA astronaut Loral O’Hara and ESA (European Space Agency) astronaut Andreas Mogensen will exit the station’s Quest airlock to collect samples for analysis to see whether microorganisms may exist on the exterior of the orbital complex. They also will replace a high-definition camera on the port truss of the station and conduct other maintenance work to prepare for future spacewalks.
O’Hara will serve as extravehicular activity (EVA) crew member 1 and will wear a suit with red stripes. Mogensen will serve as extravehicular crew member 2 and will wear an unmarked suit. U.S. Spacewalk 89 will be the first spacewalk for both crew members.
During the second spacewalk, O’Hara and Jasmin Moghbeli will complete the removal of a faulty electronics box, called a Radio Frequency Group, from a communications antenna bracket and replace one of twelve Trundle Bearing Assemblies on the port truss Solar Alpha Rotary Joint. The bearings enable the station’s solar arrays to rotate properly to track the sun as the station orbits the Earth. During this spacewalk, Moghbeli will serve as EVA crew member 1 and O’Hara will serve as EVA crew member 2. U.S. Spacewalk 90 will be the first spacewalk for Moghbeli and second for O’Hara.
Details on times for the spacewalks are being reviewed and times for live coverage on NASA Television, the agency’s website and the NASA app and will be shared once available.
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#26
by
Targeteer
on 17 Oct, 2023 01:02
-
thread titles adjusted
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#27
by
Sam Ho
on 18 Oct, 2023 02:00
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#28
by
Targeteer
on 19 Oct, 2023 19:30
-
NASA's Blog writer must be sick. They actually bothered to send an update via a press release
Oct. 19, 2023
MEDIA ADVISORY: M23-130
Watch Live as NASA Astronauts Conduct Spacewalk, Upgrade Space Station
Two NASA astronauts aboard the International Space Station will conduct a spacewalk Monday, Oct. 30, to complete maintenance activities at the orbital complex.
Live coverage of the spacewalk begins at 6:30 a.m. EDT on NASA Television, the NASA app, and the agency’s website. The spacewalk is scheduled to begin about 8:05 a.m., and last about six-and-a-half hours.
NASA astronauts Jasmin Moghbeli and Loral O’Hara will exit the station’s Quest airlock to remove an electronics box called the Radio Frequency Group from a communications antenna on station. They also will replace one of 12 trundle bearing assemblies on a solar alpha rotary joint. The bearings enable the station’s solar arrays to rotate properly to track the Sun as the station orbits the Earth. When looking at the space station, the antenna is on the starboard (right side) truss, and the rotary joint is on the port, or left side.
U.S. spacewalk 89 will be the first for both Moghbeli and O’Hara. Moghbeli will serve as extravehicular activity crew member 1 and will wear a suit with red stripes. O’Hara will serve as extravehicular crew member 2 and will wear an unmarked suit.
Station managers continue planning for another spacewalk with O’Hara, as well as ESA (European Space Agency) astronaut Andreas Mogensen, to collect samples for analysis to see whether microorganisms may exist on the exterior of the orbital complex. That spacewalk, which now is U.S. spacewalk 90, has been postponed to no earlier than December.
Get breaking news, images and features from the space station on the station blog, Instagram, Facebook, and X.
Learn more about International Space Station research and operations at:
https://www.nasa.gov/station
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#29
by
theonlyspace
on 19 Oct, 2023 20:10
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The new NASA website STINKS. The old site was much easier to find out things
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#30
by
FutureSpaceTourist
on 20 Oct, 2023 18:58
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#31
by
Yellowstone10
on 26 Oct, 2023 23:16
-
EVA now postponed to November 1, 2023:
The Expedition 70 crew is gearing up for another spacewalk planned at the beginning of November for maintenance on the outside of the International Space Station. The next United States orbital segment spacewalk now is scheduled for Wednesday, Nov. 1, to allow the International Space Station crew and flight control team additional time to prepare for the excursion.
NASA astronauts Loral O’Hara and Jasmin Moghbeli will exit the station’s Quest airlock to remove an electronics box called the Radio Frequency Group that was part of a communications antenna system. They also will replace one of 12 trundle bearing assemblies on the station’s port solar alpha rotary joint. The bearings enable the station’s solar arrays to track the Sun. The spacewalk was previously planned for Monday, Oct. 30.
https://blogs.nasa.gov/spacestation/2023/10/26/crew-continues-spacewalk-preps-following-date-adjustment/
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#32
by
Targeteer
on 01 Nov, 2023 08:45
-
ISLE protocol underway. There was a long gap in comms being heard on the ISS youtube feed.
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#33
by
Targeteer
on 01 Nov, 2023 09:16
-
ISLE protocol finished. METOX CO2 scrubbers being swapped out after exercise.
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#34
by
Targeteer
on 01 Nov, 2023 09:26
-
NASA TV coverage in 4 minutes
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#35
by
Yellowstone10
on 01 Nov, 2023 09:35
-
NASA TV coverage has started - Leah Cheshier is providing commentary today.
Now playing the animation.
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#36
by
Yellowstone10
on 01 Nov, 2023 09:43
-
Donning SAFERs.
Cheshier remarks that this is the 4th all-female spacewalk (after 3 by Koch and Meir in late 2019 / early 2020).
Edit - also they're currently 20 minutes ahead of schedule.
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#37
by
Yellowstone10
on 01 Nov, 2023 09:51
-
MCC-Houston is handing over from the Orbit 1 shift to the Orbit 2 shift.
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#38
by
Yellowstone10
on 01 Nov, 2023 09:54
-
Jasmin Moghbeli is ready to go - she's been moved into the crew lock portion of the airlock. Now to get O'Hara's SAFER installed.
Edit - O'Hara is using SAFER 15, Moghbeli's got SAFER 13.
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#39
by
Yellowstone10
on 01 Nov, 2023 10:00
-
Installing O'Hara's SAFER.
(And this is where I hurry up and shower and drive to work before the EVA starts, so if anyone wants to pick up commentary go right ahead!)
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#40
by
Targeteer
on 01 Nov, 2023 10:02
-
No way the EVA starts at 0705. They had had trouble installing the SAFER on Jaws.
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#41
by
Targeteer
on 01 Nov, 2023 10:05
-
Snagged a computer and almost pulled it off the wall with a comm cord. Specialists on the ground cringe in horror
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#42
by
Targeteer
on 01 Nov, 2023 10:07
-
Last minute bathroom break for IV Anne Mclain
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#43
by
Targeteer
on 01 Nov, 2023 10:18
-
herding floating cats in the airlock trying to close the hatch
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#44
by
centaurinasa
on 01 Nov, 2023 10:58
-
US EVA-89: This will be the 12th ISS EVA so far this year, the 2nd for Expedition 70 and the first for Moghbeli and O'Hara; for ID, Moghbeli, call sign EV-1, is wearing a suit with red stripes while O'Hara, EV-2, is wearing an unmarked suit
https://twitter.com/cbs_spacenews/status/1719682670173561278
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#45
by
Yellowstone10
on 01 Nov, 2023 11:05
-
Hatch is now open! EVAers are now speaking with Ground IV Anne McClain.
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#46
by
Yellowstone10
on 01 Nov, 2023 11:08
-
Stowing SCUs. Spacewalk officially began right on time at 8:05 am ET.
EV1 reports that some water came out when she detached the SCU, which froze on her helmet bubble.
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#47
by
Yellowstone10
on 01 Nov, 2023 11:12
-
Last suit checks - one astronaut reports 4.2 psi, the other 4.4 psi.
Go to open thermal cover. Astronauts will be coming out in daylight, but 12 minutes to sunset.
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#48
by
Yellowstone10
on 01 Nov, 2023 11:14
-
Moghbeli (EV1 with the red stripes) out of the airlock first.
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#49
by
Yellowstone10
on 01 Nov, 2023 11:19
-
O'Hara now egressing the airlock as well, but she's hidden by the thermal cover.
Edit - there she is. McClain remarks "welcome to space!" O'Hara responds "blowing my mind."
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#50
by
Yellowstone10
on 01 Nov, 2023 11:25
-
Orbital sunset. The EVAers are checking each other's SAFER handles and generally getting adapted to moving around in zero G.
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#51
by
Yellowstone10
on 01 Nov, 2023 11:30
-
Thermal cover is closed. McClain is advising the first-time EVAers on performing "translation adaptation" - suggests they do it like in the NBL, starting with some basic pitch/roll/yaw maneuvers.
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#52
by
centaurinasa
on 01 Nov, 2023 11:31
-
US EVA-89: O'Hara plans to remove one of the 12 TBAs on the left-side SARJ and replace it with a spare unit after applying lubricant to the race ring; a TBA is shown at left; the photo at right shows a TBA clamped around a toothed race ring segment`
https://twitter.com/cbs_spacenews/status/1719692857190043665
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#53
by
centaurinasa
on 01 Nov, 2023 11:32
-
US EVA-89: While O'Hara is busy with the TBA R&R, Moghbeli will remove a no-longer-needed handling fixture, carry out a photo survey at the site where a future roll-out solar array blanket will be installed and straighten out an external camera ethernet cable
https://twitter.com/cbs_spacenews/status/1719693718049943926
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#54
by
Yellowstone10
on 01 Nov, 2023 11:34
-
O'Hara's heading up the CETA spur, Moghbeli's grabbing some tools from the toolbox on the exterior of the airlock.
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#55
by
Yellowstone10
on 01 Nov, 2023 11:38
-
Moghbeli also heading up the CETA spur. They agree that moving around is a little easier than in the NBL.
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#56
by
Yellowstone10
on 01 Nov, 2023 11:44
-
McClain and O'Hara are discussing how to get everything situated at the TBA R&R worksite.
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#57
by
Yellowstone10
on 01 Nov, 2023 11:45
-
First HECA view of the EVA, although there's not much to see right now.
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#58
by
Yellowstone10
on 01 Nov, 2023 11:54
-
Also getting helmet views from Loral - the MLI in the center of her view is over the SARJ TBAs, with "TBA 7" marked on one of them.
Edit - another HECA view
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#59
by
Yellowstone10
on 01 Nov, 2023 12:00
-
Moghbeli is heading onto the mast canister - 2A, I think? - where she'll be removing the H-fixture visible in her HECA.
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#60
by
Yellowstone10
on 01 Nov, 2023 12:01
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#61
by
Yellowstone10
on 01 Nov, 2023 12:04
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McClain warns O'Hara that the bolts on the SARJ cover are "the very touchy Fairchild fasteners" and to be careful when using the PGT.
Limiting consumable is battery on EV2, and they're just a little behind timeline but catching up.
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#62
by
Yellowstone10
on 01 Nov, 2023 12:06
-
Heh... McClain also advises that when they call down turns and torques, they need to state who's talking, since they're both working bolt ops at the same time.
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#63
by
Yellowstone10
on 01 Nov, 2023 12:09
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#64
by
Yellowstone10
on 01 Nov, 2023 12:13
-
Bit of an Earth view from Moghbeli's HECA.
McClain mentions that the H-fixture could self-release due to stored energy once the bolts are removed, to which Moghbeli responds "I hope so!"
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#65
by
Yellowstone10
on 01 Nov, 2023 12:15
-
And also some Earth from O'Hara's HECA, viewed through the struts of the SARJ.
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#66
by
centaurinasa
on 01 Nov, 2023 12:19
-
Simultaneous PGTing!
the "all-purpose" PGT!
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#67
by
Yellowstone10
on 01 Nov, 2023 12:19
-
Whoops - one bolt O'Hara removed was actually on Cover 3, the next one over. They'll be retorquing that later.
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#68
by
centaurinasa
on 01 Nov, 2023 12:22
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#69
by
Yellowstone10
on 01 Nov, 2023 12:23
-
Loral has the cover off and temp-stowed. Now inspecting the race ring and getting HECA views - she reports no metal shavings on the ring, which is good.
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#70
by
Yellowstone10
on 01 Nov, 2023 12:25
-
The H-fixture did not pop off (not too surprising), so Moghbeli is retrieving some tools to work to pry it off.
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#71
by
Yellowstone10
on 01 Nov, 2023 12:30
-
Cable on the degraded TBA has been demated.
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#72
by
Yellowstone10
on 01 Nov, 2023 12:33
-
Moghbeli reports the H-fixture "likes where it's at." O'Hara is trying to get a cap installed over the socket from which she demated the cable, but it's also proving finicky.
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#73
by
Yellowstone10
on 01 Nov, 2023 12:33
-
H-fixture has been released!
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#74
by
Yellowstone10
on 01 Nov, 2023 12:38
-
Cap is in place on the socket, and O'Hara will now be attaching a French hook to the bearing package before removing it.
Moghbeli asks McClain to pass on thanks to Josh (Cassada, I assume) on his lessons on removing H-fixtures.
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#75
by
Yellowstone10
on 01 Nov, 2023 12:46
-
O'Hara is breaking torque on the bolts securing the TBA, but her tether is drifting into the worksite - going to take a sec to reposition that. McClain also passes along a reminder not to let the PGT drift into the race rings.
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#76
by
centaurinasa
on 01 Nov, 2023 12:46
-
US EVA-89 (PET: 1:27; EDT: 9:32am): O'Hara has removed insulation blankets and gained access to the trundle bearing assembly in the port SARJ; she reports no signs of metal shavings in the mechanism; the helmetcam view below shows the toothed race rings the bearing assembly clamps around
https://twitter.com/cbs_spacenews/status/1719709442445361460US EVA-89: Moghbeli, meanwhile, has removed a handling fixture to help make way for the future installation of another set of roll-out solar array blankets on the power channel 2A array; she'll now carry out a photo survey of the area
https://twitter.com/cbs_spacenews/status/1719710530053480571
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#77
by
centaurinasa
on 01 Nov, 2023 12:51
-
Always love the kind of view with Earth in the background
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#78
by
Yellowstone10
on 01 Nov, 2023 12:53
-
Moghbeli was in the process of doing a photo/video survey of the 2A mast canister area in advance of a future IROSA installation, but ground controllers have decided to redirect her over to the TBA R&R worksite to help out O'Hara and provide an extra pair of hands. O'Hara is reporting that the BRT is not rigidizing as well as she'd expect, which is making positioning a challenge.
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#79
by
Yellowstone10
on 01 Nov, 2023 13:20
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OK, back at my desk...
McClain reports that they are about an hour behind timeline at this point.
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#80
by
centaurinasa
on 01 Nov, 2023 13:20
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#81
by
Yellowstone10
on 01 Nov, 2023 13:29
-
Catch-up photos:
- Continuing to work on removing TBA bolts.
- The bearing unit was finally removed, and stowed in a bag.
- After that, the mounting unit was un-bolted from the inboard race ring and also stowed in a bag.
- The race ring with the TBA fully removed.
The next task in the TBA R&R is to lubricate the ring, and that's a one-person job, so Moghbeli is going to head up to the Camera Port 8 camera to reposition a cable that's obstructing some motion of the camera assembly.
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#82
by
Yellowstone10
on 01 Nov, 2023 13:33
-
Grease gun and dry wipe. Also, sun's out again!
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#83
by
Yellowstone10
on 01 Nov, 2023 13:42
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Moghbeli's view at the CP8 worksite. Ground crews are discussing how best to secure that cable.
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#84
by
Yellowstone10
on 01 Nov, 2023 13:44
-
Three clicks of grease applied with the J-hook - McClain approvingly notes that O'Hara's gloves are still white.
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#85
by
Yellowstone10
on 01 Nov, 2023 13:46
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Looking over Moghbeli's shoulder from a station cam as she works on the CP8 Ethernet cable.
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#86
by
Joachim
on 01 Nov, 2023 13:48
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Has someone the EMU numbers (not the SAFER numbers)?
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#87
by
Yellowstone10
on 01 Nov, 2023 13:50
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Greasing the other two surfaces of the race ring (flat and outer canted) with the straight grease gun.
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#88
by
Yellowstone10
on 01 Nov, 2023 13:54
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Moghbeli is going to demate the cable, put a twist in it, and re-mate. (Once it gets unstuck, that is.)
Edit - fun fact, that bar thing with the two grapple fixtures on the radiator unit was the first un-pressurized cargo to be delivered to station in a Dragon trunk, back on CRS-2.
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#89
by
centaurinasa
on 01 Nov, 2023 13:59
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#90
by
Yellowstone10
on 01 Nov, 2023 14:07
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EV1 is still working on that camera group. EV2 has started one bolt on the mounting bracket by hand - no HECA views of that, though, I think they mentioned her camera was running a bit hot and were going to turn it off for a sec.
Edit - there's a camera view! You can also see a good amount of grease on the race ring when the sun's at the right angle.
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#91
by
Yellowstone10
on 01 Nov, 2023 14:10
-
Good views of the bearing package, which O'Hara has slid into the mounting bracket.
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#92
by
centaurinasa
on 01 Nov, 2023 14:15
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US EVA-89 (PET: 3:07; EDT: 11:12am): O'Hara is now using her pistol grip tool to drive three bolts needed to clamp the new trundle bearing assembly to the port SARJ; Moghbelli is wrapping up work to unkink and tie down a wayward ethernet cable at camera CP8
https://twitter.com/cbs_spacenews/status/1719734495211843628
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#93
by
Yellowstone10
on 01 Nov, 2023 14:17
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O'Hara is working to drive Bolt 2 on the TBA, which will cause the back portion to move down and clamp around the triangular race ring. Seems to be drifting around a lot, though.
Ground controllers have decided that they will not bring the RFG in the airlock on today's EVA, but they will remove the wedge clamps from the back edge.
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#94
by
centaurinasa
on 01 Nov, 2023 14:20
-
US EVA-89 (PET: 3:12; EDT: 11:17am): Spacewalk controllers have decided not to have Moghbeli and O'Hara retrieve the S-band radio frequency group box from External Stowage Platform No. 2 as originally planned; instead, they will prep it for removal in a future EVA
https://twitter.com/cbs_spacenews/status/1719735897145438644
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#95
by
Yellowstone10
on 01 Nov, 2023 14:26
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O'Hara put about 11 turns into Bolt 2 - less than expected, but it's torquing out when she tries to do another turn. Mission Control seems OK with it.
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#96
by
Yellowstone10
on 01 Nov, 2023 14:29
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Bolts 1 and 3 have also been driven.
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#97
by
Yellowstone10
on 01 Nov, 2023 14:39
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More bolt torquing ops - didn't get quite as many turns on bolt 3 as expected.
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#98
by
Yellowstone10
on 01 Nov, 2023 14:47
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Caps off the cable and socket, inspection looks good.
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#99
by
Yellowstone10
on 01 Nov, 2023 14:49
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Cable has been connected.
Moghbeli is trying to track down a crew lock bag that she dropped off earlier in the spacewalk.
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#100
by
Yellowstone10
on 01 Nov, 2023 14:59
-
O'Hara is preparing to re-install the SARJ cover. Moghbeli is heading back to the airlock - still without Crew Lock Bag P, as far as I can tell.
Mounting package serial number: either 9056 or 5056, couldn't quite make that out.
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#101
by
Yellowstone10
on 01 Nov, 2023 15:04
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Starting the bolts by hand - however, the cover is tending to float away. Seems to be a common theme of this spacewalk.
Moghbeli is heading to the US Lab to get tethers configured for SSRMS ops with the RFG.
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#102
by
centaurinasa
on 01 Nov, 2023 15:08
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#103
by
Yellowstone10
on 01 Nov, 2023 15:09
-
Updated plan - no SSRMS ops today, since they're not going to be flying the RFG into the airlock. They'll access the wedge clamps from ESP-2.
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#104
by
Yellowstone10
on 01 Nov, 2023 15:14
-
O'Hara has SARJ cover bolts hand-started and is ready to secure them with the PGT. Moghbeli is on ESP-2.
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#105
by
Yellowstone10
on 01 Nov, 2023 15:18
-
Moghbeli is now at the airlock. Great views of the equipment inside.
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#106
by
Yellowstone10
on 01 Nov, 2023 15:27
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Even the cover bolts are proving tricky - 2A and 2B in the middle are seated, but they need 1 more before they can untether and the other two pairs of bolts aren't wanting to seat in the bolt holes. O'Hara is repositioning herself to try for a better angle.
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#107
by
Yellowstone10
on 01 Nov, 2023 15:31
-
Moghbeli is at the RFG worksite.
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#108
by
Yellowstone10
on 01 Nov, 2023 15:34
-
O'Hara got bolts 1A and 1B secured! (Also, old-school helmet cam while they let her HECA cool off.)
Edit - and 3B started! McClain comments that they're about to start engraving the trophy down on the ground.
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#109
by
Yellowstone10
on 01 Nov, 2023 15:45
-
Re-torquing that one bolt on cover 3 that O'Hara inadvertently removed earlier in the EVA. With that done, she gets to stow her PGT.
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#110
by
Yellowstone10
on 01 Nov, 2023 15:50
-
Moghbeli is removing the MLI from the SASA. (Note the bolt in the middle missing its head where it was snapped off during an earlier attempt at retrieving the RFG.)
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#111
by
Yellowstone10
on 01 Nov, 2023 15:53
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McClain reports a good checkout on the CP8 camera, with the cable now causing no issues with the pan-and-tilt.
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#112
by
Yellowstone10
on 01 Nov, 2023 15:56
-
A view of the troublesome radiator from VKD-61 as Moghbeli works with the clamshell portion of the MLI (covering the movable head of the antenna).
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#113
by
Yellowstone10
on 01 Nov, 2023 15:59
-
O'Hara is translating to the CETA cart for a get-ahead task.
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#114
by
centaurinasa
on 01 Nov, 2023 15:59
-
US EVA-89 (PET: 4:41; EDT: 12:46pm): O'Hara has completed her work with the trundle bearing assembly; Moghbeli is working to remove insulation from the radio frequency group component on External Stowage Platform No. 2; but the unit will not be retrieved as originally planned
https://twitter.com/cbs_spacenews/status/1719758746220449857
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#115
by
Yellowstone10
on 01 Nov, 2023 16:07
-
A station camera view of Moghbeli working on the RFG.
Also, a view of the starboard CETA cart worksite where O'Hara performed a quick get-ahead involving repositioning a handle.
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#116
by
Yellowstone10
on 01 Nov, 2023 16:19
-
Here's a shot from the last EVA showing the "bend" in the CETA handle that O'Hara straightened out.
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#117
by
Yellowstone10
on 01 Nov, 2023 16:23
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McClain says they have about 45 more minutes to work on the RFG before they have to start cleanup, and at this point, whatever data they can gather is a win.
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#118
by
Yellowstone10
on 01 Nov, 2023 16:29
-
O'Hara has stowed the ORU bag from the TBA replacement back in the airlock. Moghbeli is working to pull some RTV (a rubber compound) off the RFG using needle-nose pliers, but there's not a great position for her to do so.
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#119
by
centaurinasa
on 01 Nov, 2023 16:30
-
US EVA-89 (PET: 5:19; EDT: 1:24pm): Flight controllers say the spacewalkers have about 45 minutes left to work with the radio frequency group component; O'Hara has been told to join Moghbeli at the external stowage platform to help make preparations for the component's eventual retrieval during a future spacewalk
https://twitter.com/cbs_spacenews/status/1719767870198964623
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#120
by
haywoodfloyd
on 01 Nov, 2023 16:36
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Always good to have a crowbar handy...
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#121
by
Yellowstone10
on 01 Nov, 2023 16:39
-
Moghbeli has been helping O'Hara clear a tether snarl. Ground has advised them that they're going to start moving into cleanup ops - re-securing the MLI over the RFG, picking up a tether fairlead, and then ingressing.
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#122
by
Yellowstone10
on 01 Nov, 2023 16:42
-
Right at sunrise, we got a good view of RRM3 attached to the side of Cygnus NG-19, where it was installed for disposal a few days ago.
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#123
by
Yellowstone10
on 01 Nov, 2023 16:47
-
O'Hara coming over to assist with RFG worksite cleanup.
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#124
by
centaurinasa
on 01 Nov, 2023 16:49
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#125
by
Yellowstone10
on 01 Nov, 2023 16:56
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O'Hara reports that her comm cap is starting to slide down towards her eyes, but she can still see. McClain advises her that she can start heading back towards the airlock, but to drop a local tether right away if it blocks her vision.
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#126
by
Yellowstone10
on 01 Nov, 2023 17:03
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Nice view looking down at Earth as O'Hara enters the airlock.
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#127
by
Yellowstone10
on 01 Nov, 2023 17:08
-
Moghbeli is retrieving a fairlead off the top of US Lab that she had set up in anticipation of SSRMS ops.
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#128
by
centaurinasa
on 01 Nov, 2023 17:12
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#129
by
Yellowstone10
on 01 Nov, 2023 17:15
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Moghbeli is coming down the CETA spur.
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#130
by
Yellowstone10
on 01 Nov, 2023 17:22
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Thermal cover is closed, and Moghbeli has turned her HECA off.
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#131
by
Yellowstone10
on 01 Nov, 2023 17:27
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Mogensen is providing them with guidance on how to arrange themselves and their equipment in the airlock for hatch closure.
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#132
by
Yellowstone10
on 01 Nov, 2023 17:33
-
McClain is giving the end-of-EVA congratulatory speech. Moghbeli also gives a speech giving thanks to the team and saying hello to her kids, chuckling slightly when she refers to it as the "RFG Retrieval Part 2" EVA, given that they didn't.
Edit - O'Hara also gives a bit of a speech thanking the support team, as well as a particular thanks to her sisters for supporting her during preparation for this mission.
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#133
by
Yellowstone10
on 01 Nov, 2023 17:35
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McClain confirms that the port SARJ successfully drove, following the TBA replacement.
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#134
by
Yellowstone10
on 01 Nov, 2023 17:43
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Exterior hatch is closed and locked.
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#135
by
Yellowstone10
on 01 Nov, 2023 17:45
-
McClain officially hands communications over to Mogensen for repress ops.
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#136
by
Yellowstone10
on 01 Nov, 2023 17:49
-
Repressurization officially began at 2:47 pm Eastern Time, for a spacewalk duration of 6 hours and 42 minutes.
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#137
by
Yellowstone10
on 01 Nov, 2023 17:56
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Airlock is now at 5 psi, and repress has paused for leak checks.
Edit - added By the Numbers slide
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#138
by
Yellowstone10
on 01 Nov, 2023 18:13
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Pressure has equalized. Mogensen is preparing to open the hatch.
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#139
by
Yellowstone10
on 01 Nov, 2023 18:15
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#140
by
Yellowstone10
on 01 Nov, 2023 18:18
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O'Hara is into the equipment lock first, as Mogensen and Furukawa secure her SAFER.
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#141
by
Yellowstone10
on 01 Nov, 2023 18:23
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Moghbeli now also mounted on the wall. You can kind of see the cap that O'Hara mentioned was falling down over her eyes.
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#142
by
robertross
on 01 Nov, 2023 18:28
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Great work with the coverage guys. Much appreciated.
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#143
by
Yellowstone10
on 01 Nov, 2023 18:30
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Furukawa is taking some photographs of O'Hara and her headband at Houston's request.
(w00t, 1000th post!)
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#144
by
Yellowstone10
on 01 Nov, 2023 18:34
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Moghbeli's helmet and gloves are off.
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#145
by
Yellowstone10
on 01 Nov, 2023 18:39
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O'Hara is also out of her helmet and gloves, briefly contemplating the troublesome headband.
NASA TV coverage has wrapped up.
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#146
by
centaurinasa
on 01 Nov, 2023 18:40
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End of NASA TV coverage.
An incredible "step by step" coverage Yellowstone10, thank you !
(and thx to NASA PAO Leah Cheshire ,for her, as usual, perfect commentary)
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#147
by
Yellowstone10
on 01 Nov, 2023 18:48
-
US EVA-89: FWIW, Moghbeli reported earlier in the EVA that she could not find a tool bag she had tethered to a handrail; it was not mentioned again, so we don't know if she ever found it or if it somehow came loose and floated away
https://twitter.com/cbs_spacenews/status/1719770191565852735
We'll have to keep an eye out for any new 1998-067 objects on Celestrak. I don't believe they ever found Crew Lock Bag P, but whether it's still tethered somewhere out on the port truss or drifting off into space is yet to be determined, as far as I know.
Also, I flipped over to the Live Video from the ISS Feed to see if there were any noteworthy views - we did get this amusing reminder re: no up or down in space.
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#148
by
jcm
on 01 Nov, 2023 19:14
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Do we know which EMUs were used? Haven't seen that reported in the thread
Thanks for the coverage, I was busy at work all day
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#149
by
SMS
on 01 Nov, 2023 19:22
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Moghbeli EV-1 EMU#3003
O'Hara EV-2 EMU#3004
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#150
by
SMS
on 01 Nov, 2023 20:30
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#151
by
Yellowstone10
on 01 Nov, 2023 21:16
-
I went hunting and found what I think is the last time the missing Crew Lock bag appears, at timestamp 4:03:45 in the livestream:
Moghbeli pushes it away from her as she goes to work on the CP8 camera, and it
looks like it's slowing down as if tethered offscreen, but it's not possible to see the actual tether point. We don't see a HECA view looking nadir towards where the bag would be until she's done with the camera work and heading back towards O'Hara around 4:50:00 into the stream, at which point she starts asking about where her bag went. As she searches, we eventually see a view of the entire handrail 3683 that runs vertically below the camera stanchion, which is where it would have been tethered
if it was tethered in that shot at 4:03:45.
Long story short, I think it drifted off.
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#152
by
Yellowstone10
on 01 Nov, 2023 21:21
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... or I could have just checked NASA's ISS blog:
NASA astronauts Jasmin Moghbeli and Loral O’Hara concluded their spacewalk today at 2:47 p.m. EST after 6 hours and 42 minutes.
Moghbeli and O’Hara were able to complete one of the spacewalk’s two major objectives, replacing one of the 12 trundle bearing assemblies on the port solar alpha rotary joint, which allows the arrays to track the Sun and generate electricity to power the station. Mission Control told the station crew that the solar array is functioning well after the bearing replacement. Spacewalkers also removed a handling bar fixture to prepare for future installation of a roll-out solar array and properly configured a cable that was previously interfering with an external camera.
The astronauts had planned to remove and stow a communications electronics box called the Radio Frequency Group, but there was not enough time during the spacewalk to complete the work. The duo lifted some multilayer insulation to make a better assessment of how to approach the job before replacing the insulation and deferring the task to a future spacewalk.
During the activity, one tool bag was inadvertently lost. Flight controllers spotted the tool bag using external station cameras. The tools were not needed for the remainder of the spacewalk. Mission Control analyzed the bag’s trajectory and determined that risk of recontacting the station is low and that the onboard crew and space station are safe with no action required.
https://blogs.nasa.gov/spacestation/2023/11/01/astronauts-enter-station-complete-spacewalk/
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#153
by
jcm
on 02 Nov, 2023 00:01
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#154
by
Targeteer
on 02 Nov, 2023 10:02
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58174 ISS DEB 1998-067WA DEBRIS CIS 1998-11-20 TTMTR 92.87 51.64 416 414
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#155
by
Targeteer
on 02 Nov, 2023 21:01
-
Jaws just checked in with CAPCOM with a "lost item report" that Satoshi while photographing Mt Fuji also photographed the lost tool bag. Jaws joked "was it close enough to grab with the arm". Seriously, it's obviously not separating from the ISS. The photo is guaranteed to show up on someone's social media. Edit--Satoshi just gave the ground the location to download the bag photos...
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#156
by
space_19771999
on 02 Nov, 2023 21:13
-
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#157
by
Targeteer
on 02 Nov, 2023 23:35
-
58174 ISS DEB 1998-067WA DEBRIS CIS 1998-11-20 TTMTR 92.87 51.64 416 414
Did they lose something else?
58203 ISS DEBRIS 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.40 51.64 400 384
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#158
by
Yellowstone10
on 02 Nov, 2023 23:46
-
58174 ISS DEB 1998-067WA DEBRIS CIS 1998-11-20 TTMTR 92.87 51.64 416 414
Did they lose something else?
58203 ISS DEBRIS 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.40 51.64 400 384
I'm pretty sure that 1998-067WB is the crew lock bag - note the origin code of USA vs. CIS for the other one. Celestrak has its first ping on WA on October 30, the same day as its first data point for the Parus cubesat, so I think whatever WA is was released during VKD-61. I know they jettisoned a couple towel bundles, but those aren't usually trackable as far as I know.
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#159
by
Targeteer
on 03 Nov, 2023 23:48
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58174 ISS DEB 1998-067WA DEBRIS CIS 1998-11-20 TTMTR 92.87 51.64 416 414
Did they lose something else?
58203 ISS DEBRIS 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.40 51.64 400 384
I'm pretty sure that 1998-067WB is the crew lock bag - note the origin code of USA vs. CIS for the other one. Celestrak has its first ping on WA on October 30, the same day as its first data point for the Parus cubesat, so I think whatever WA is was released during VKD-61. I know they jettisoned a couple towel bundles, but those aren't usually trackable as far as I know.
It's slowing down fast
58203 ISS DEB 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.26 51.64 394 376
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#160
by
Yellowstone10
on 04 Nov, 2023 15:37
-
It's slowing down fast
58203 ISS DEB 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.26 51.64 394 376
Yeah, something's weird about the data for VZ (reportedly the Parus nanosat), WA, and WB. VZ is descending faster than you'd expect for a 1U CubeSat (SMA from ISS's 417 km down to 377 km in 11 days since deployment on Oct 25), while WA hasn't descended much at all (SMA down to 414 km), and WB's first data point (from just 2 hours after the bag was lost) has it at an SMA of 392 km. Seems likely that some of those data points are mis-assigned.
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#161
by
Targeteer
on 04 Nov, 2023 19:59
-
It's slowing down fast
58203 ISS DEB 1998-067WB DEBRIS USA 1998-11-20 TTMTR 92.26 51.64 394 376
Yeah, something's weird about the data for VZ (reportedly the Parus nanosat), WA, and WB. VZ is descending faster than you'd expect for a 1U CubeSat (SMA from ISS's 417 km down to 377 km in 11 days since deployment on Oct 25), while WA hasn't descended much at all (SMA down to 414 km), and WB's first data point (from just 2 hours after the bag was lost) has it at an SMA of 392 km. Seems likely that some of those data points are mis-assigned.
58203 ISS DEB 1998-067WB DEBRIS US 1998-11-20 TTMTR 92.17 51.64 390 372
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#162
by
Yellowstone10
on 06 Nov, 2023 02:09
-
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
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#163
by
Targeteer
on 09 Nov, 2023 05:54
-
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330
The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
1998-067WC still has not appeared on the Space-track.org website...
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#164
by
AnalogMan
on 09 Nov, 2023 10:32
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#165
by
Nicolas PILLET
on 12 Nov, 2023 12:38
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....or even postponed if there's a risk of ammonia flying around?
Do we know the coolant fluid is ammonia?
It is not.
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#166
by
eeergo
on 12 Nov, 2023 13:38
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....or even postponed if there's a risk of ammonia flying around?
Do we know the coolant fluid is ammonia?
It is not.
Yeah, after the latest VKD this much was proven
It was shown to be a clear liquid of low viscosity with no particular tendency to boil/sublimate easily in vacuum, or subject to rapid expansion leading to major freezing once released. This can correspond to oils, silicones, some kind of refined solvants... Do we then know if it's common heritage with the silicone oil or benzene-like substances employed in the coolant loop of Soyuz and Progress?
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#167
by
Targeteer
on 12 Nov, 2023 23:20
-
Well that makes more sense:
https://twitter.com/planet4589/status/1721282347805393330
The crew lock bag that floated free during the Nov 1 EVA-89 spacewalk has been cataloged as 58229 / 1998-067WC in a 415 x 416 km orbit
Then WB and VZ, which have similar orbital data (descending to around 370 km already) are probably the two towel bundles from VKD-61, and WA, descending quite a bit more slowly (currently 413 km SMA) must be the Parus nanosatellite.
1998-067WC still has not appeared on the Space-track.org website...
Now on Space-Track.org and descending
58229 ISS DEBRIS 1998-067WC DEBRIS US 1998-11-20 TTMTR 92.84 51.64 415 413
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#168
by
Michael S
on 13 Nov, 2023 12:06
-
How many tool bags have been accidentally “dropped overboard” over the years?
I remember another incident years ago, and during a press conference someone asked if a Manned Maneuvering Unit could be used to retrieve it before it got to far away. Have there been only 2 incidents, or have there been others?
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#169
by
Yellowstone10
on 16 Dec, 2023 04:25
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Checking up on the tool bag - it's descended about 10 km since it was lost, now at an SMA of 405 km per Celestrak.
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#170
by
litton4
on 17 Jan, 2024 15:56
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How's the toolbag doing now?
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#171
by
Yellowstone10
on 17 Jan, 2024 17:14
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How's the toolbag doing now?
It's currently in an orbit of 398.5 km by 392.9 km, so it's got a while to go.
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#172
by
Yellowstone10
on 27 Jun, 2024 21:03
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Moghbeli's missing tool bag from EVA-89 reentered Earth's atmosphere yesterday, according to Celestrak.
(and thx to NASA PAO Leah Cheshire ,for her, as usual, perfect commentary)