Mission Diary Farewell

During these last six months it has been my pleasure to report the daily activities of Expedition 46/47 and Tim Peake’s log of work board the ISS. Supplementing the monthly reports on activity at the ISS provided in each issue of Spaceflight by our contributor George Spiteri, I hope that the detailed presentation of each day’s activity has helped show the intensity of schedules and flight planning which goes into routine operations at the station.

With Tim having returned home last Saturday, and now sharing his thoughts on an astonishing six months in space, it is time to bring this strand to an end. But the work goes on and activity aboard the ISS continues apace, for now just three men but soon to be supplemented by a woman and two men arriving aboard the Soyuz MS spacecraft.

For now, if you have been following these words – about 223,000 since Tim’s launch, at the last count – I hope it has whetted your appetite for regarding the ISS in a new light, a place where real science is mixed with engineering fixes, routine maintenance and the occasional repair job. It has been fun bringing this Peake Report to you and remember, all the back reports are available on this website. Thanks for reading.

David Baker

ISS Daily Report 17-21 June

Direct Current To Direct Current (DDCU) LA1A Trip: Last Thursday, DDCU LA1A tripped off due to a ~40 amp overcurrent. Parallel DDCU LA4A was already off for Battery 4A conditioning. A Failure Investigation Team (FIT) recommended the crew perform troubleshooting steps including rotation of the rack and visual inspection of the DDCUs, wire harnesses, and the Secondary Power Distribution Assembly (SPDA).  The crew also performed multimeter measurements on both DDCU outputs on the face of the DDCU as well as on the output cable leading to downstream wiring for indications of a fault. Following the troubleshooting, another FIT was held and the recommendation was to R&R DDCU LA1A which the crew completed this morning. Both DDCUs and Pressurized Mating Adapter (PMA)2 shell heaters were powered on and are operating nominally.  CEVIS has been reinstalled.  Ground teams have recovered most affected loads with a few remaining items to be repowered tonight. 

Multi-Omics Operations:  The crew supported the Japan Aerospace Exploration Agency (JAXA) Multi-Omics investigation by collecting samples and inserting them in the Minus Eighty-degree Freezer for ISS (MELFI). The investigation evaluates the impacts of space environment and prebiotics on astronauts’ immune function by combining the data obtained from the measurements of changes in the microbiological composition, metabolites profiles, and the immune system.

NeuroMapping Operations: The crew set up the hardware and performed this experiment, including testing in both a “strapped in” and ”free floating” body configuration. The investigation studies whether long-duration spaceflight causes changes to the brain, including brain structure and function, motor control, and multi-tasking abilities. It also measures how long it takes for the brain and body to recover from changes. Previous research and anecdotal evidence from astronauts suggests movement control and cognition can be affected in microgravity. The NeuroMapping investigation performs structural and functional magnetic resonance brain imaging (MRI and fMRI) to assess changes that occur after spending an extended period on the ISS.

Ammonia Measurement Kit Chip Measurement System (CMS) Battery Changeout: The CMS draws a small amount of current even while inactive, therefore the batteries must be changed periodically to ensure the CMS will activate in an emergency. During this procedure the crew verified that the CMS would have activated using the installed batteries near end-of-life, then replaced them.

Treadmill 2 (T2) Monthly Maintenance: The crew completed this regularly scheduled maintenance to inspect the bungee shackle key mount witness marks, Y-Axis isolators, two boot snubbers, and all four snubber arms for signs of free play.

Today’s Planned Activities

All activities were completed unless otherwise noted.

  • Morning Inspection, Laptop RS1(2) Reboot Morning Inspection, RSS1,2 Reboot / r/g 1460
  • SM ПСС (Caution & Warning Panel) Test
  • MRM2 comm config to support the P/L Ops
  • KULONOVSKIY KRISTALL. Hardware Setup and Configuration r/g 2578
  • JEMAL Depress and Vent
  • COSMOCARD. Preparing for and Starting 24-hr ECG Recording / r/g 2579
  • Multi Omics (MO) Sample Collection
  • RELAKSATSIYA Hardware Setup r/g 2575
  • Multi Omics (MO) Sample Insertion into MELFI
  • Kulonovskiy Kristall Experiment Run r/g 2578
  • Multi Omics (MO) Equipment Stowage
  • Multi Omics (MO) Hardware Setup
  • RELAKSATSIYA. Parameter Settings Adjustment r/g 2575
  • Monthly Inspection of T2 Treadmill System
  • MRM2 Comm Reconfig for Nominal Ops
  • URAGAN. Observation and photography using Photo Equipment / r/g 2581
  • RELAKSATSIYA. Observation r/g 2575
  • PHS Evaluation Setup
  • RELAKSATSIYA. Closeout Ops and Hardware Removal r/g 2575
  • Periodic Health Status (PHS), Subject
  • Periodic Health Status (PHS) – CMO
  • Periodic Health Status (PHS) Data Entry and Hardware Stowage
  • KULONOVSKIY KRISTALL. Copy and Downlink Data / r/g 2578
  • DUBRAVA. Observation and photography using VSS / r/g 2580
  • JEMAL Verifying depressurization complete
  • JEM Airlock Depressurization and Vent Confirmation
  • Water Recovery System (WRS): waste tank offload – init
  • Filling (separation) of EDV (KOV) for Elektron or EDV-SV r/g 2590
  • Progress 432 (Aft) Transfers and IMS Ops / r/g 1812, 1832
  • Emergency Operations (EMER)  Chip Measurement System (CMS) Battery Changeout
  • СОЖ Maintenance
  • HMS Defibrillator Inspection
  • Water Recovery System (WRS): waste tank offload – term
  • WRS – recycle tank fill from EDV
  • Progress 431 (DC1) Stowage and IMS Ops / r/g 2435, 2512, 2584
  • Dragon Prepack
  • NeuroMapping (NMAP) Test Ops
  • Countermeasures System (CMS) Sprint Exercise Optional
  • Exercise Data Downlink via OCA
  • IMS Delta File Prep
  • URISYS Hardware Setup  r/g 2583
  • RELAKSATSIYA. Charging battery for Relaksatstiya experiment (initiate) / r/g 0167
  • SPLANH. Diet Restrictions Reminder / r/g 2576

Completed Task List Items

  • iPAD cert update [Active]

Ground Activities

All activities were completed unless otherwise noted.

  • Nominal ground commanding 

Three-Day Look Ahead:

Tuesday, 06/21: OBT 46S emergency drill, EVA EMU swap, JEMAL antivirus scan

Wednesday, 06/22: EMU 3005, 3008 water maintenance/loop scrub

Thursday, 06/23: Habitability, Microchannel Diffusion plate changeout

QUICK ISS Status – Environmental Control Group:

                              Component Status
Elektron On
Vozdukh Manual
[СКВ] 1 – SM Air Conditioner System (“SKV1”) Off
[СКВ] 2 – SM Air Conditioner System (“SKV2”) On
Carbon Dioxide Removal Assembly (CDRA) Lab Standby
Carbon Dioxide Removal Assembly (CDRA) Node 3 Operate
Major Constituent Analyzer (MCA) Lab Idle
Major Constituent Analyzer (MCA) Node 3 Operate
Oxygen Generation Assembly (OGA) Process
Urine Processing Assembly (UPA) Norm
Trace Contaminant Control System (TCCS) Lab Off
Trace Contaminant Control System (TCCS) Node 3 Full Up
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