Ocular Health (OH): With Cristoforetti assisting as the CMO, Virts completed his Ocular Health ultrasound. Ultrasound scans were performed of his eyes, followed by cardiac echo measurements as part of the Ocular Health data collection. The ultrasound images will be used to identify changes in globe morphology, including flattening of the posterior globe, and document optic nerve sheath diameter, optic nerve sheath tortuosity, globe axial measurements, and choroidal engorgement. The Ocular Health protocol calls for a systematic gathering of physiological data to characterize the risk of microgravity-induced visual impairment/intracranial pressure in ISS crewmembers. Researchers believe that the measurement of visual, vascular and central nervous system changes over the course of this experiment and during the subsequent post-flight recovery will assist in the development of countermeasures, clinical monitoring strategies, and clinical practice guidelines.
Japanese Experiment Module Airlock (JEMAL) Reconfiguration: Virts and Cristoforetti removed the Nanorack Cubesat Deployers and the Multi-Purpose Experiment Platform (MPEP) and Small Fine Arm (SFA) Attachment Mechanism (SAM) from the JEMAL slide table. The Nanorack Cubesat deployers will be packed for return on SpaceX-6 (SpX-6). Tomorrow the crew will install the Robotics Refueling Mission (RRM)-2 hardware on the JEMAL slide table.
Gene, Immune and Cellular Responses to Single and Combined Space Flight Conditions-B (TripleLux-B): Cristoforetti performed Day 2 of the second run of TripleLux-B. She thawed the Culture Tubes B in the Biolab glovebox, assembled the Experiment Container (EC) and installed the EC into the Biolab Rotor for cell transfer. The EC was then inserted into the Thermal Control Unit (TCU)-2 at 4° Celcius for cell reconstitution. TripleLux compares the mechanisms of vertebrate and invertebrate cells at a cellular level which causes impairment of immune functions in microgravity through induction of gene activation, phagocytosis (ingestion of foreign material), and DNA repair in vertebrate and invertebrate immune cells. TripleLux-B examines the immune function of the blue mussel (Mytilus edulis), hemocytes (cellular component of invertebrate blood), compared to rodent macrophages (white blood cells responsible for eating foreign material) to function in microgravity.
Node 3 (N3) Carbon Dioxide Removal Assembly (CDRA) Status: Overnight ground specialist were able to restart N3 CDRA following yesterday’s ASV 106 replacement and subsequent CDRA bed 1 leak check failure. N3 CDRA is currently operating nominally. Additional leak checks are planned, per procedures, later this week.
Regenerative Environmental Control and Life Support System (RGN-ECLSS) Status: Overnight the Water Processing Assembly (WPA) experienced a High Conductivity Fault. The fault was traced to a biased sensor which has been inhibited and the WPA is currently processing. Then, this morning during the Waste Water Storage Tank Assembly (WSTA) fill there was an unexpected sensor increase. During a WSTA fill this morning, the nominal deactivation steps were performed when the WSTA reached 69%. Rather than deactivating, the quantity within the WSTA continued to increase. Ground teams are currently investigating the WSTA event.
Today’s Planned Activities
All activities were completed unless otherwise noted.
- Ultrasound – Hardware Setup and Activation
- COSMOCARD. Closeout Ops
- VIRTUAL. Experiment Ops
- Ultrasound – Scanning Prep
- Ocular Health (OH) – Ultrasound Scan
- Ultrasound – Data Export
- Ocular Health Cardiac Operations
- JEM Airlock Slide Table (ST) Extension to JPM Side
- TPLXB – Hardware Setup for the Experiment
- TPLXB – Preparation of Glovebox
- NanoRacks CubeSat Deployer Removal from the MPEP
- Voice check in S/G1 from Baikonur
- Ultrasound – Hardware Deactivation and Closeout
- TPLXB – Removal of Culture Tube from GLACIER and Transfer to Glovebox
- OTKLIK. Hardware Check
- TPLXB – Thawing of Culture Tube and Assembly of EC
- Audit of O-rings and seals КВО.7346.0000.
- JEM Airlock Capture Mechanism Release
- MPEP – Hardware Setup
- MPEP – Removal of MPEP from Small Fine Arm (SAM)
- TPLXB – Hardware Setup
- WRS – Recycle Tank Fill
- Replacement of ПТАБ-1М (А301) АБ Module No.1
- Force Loader Test (HC-1M)
- JEM Airlock – Slide Table Retraction
- Verification of ИП-1 Flow Sensor Position
- TPLXB – Closeout Ops
- Health Maintenance System (HMS) – Nutritional Assessment (ESA)
Completed Task List Items
- Safety-Video-Followup
Ground Activities
All activities were completed unless otherwise noted.
- MPEP release from SAM
- JEM A/L deactivation
- SAM removal
- JEM A/L slide table retraction
- JEM A/L activation
Three-Day Look Ahead:
- Thursday, 03/26: JEM A/L slide table extension, RRM hardware install
- Friday, 03/27: 42S launch/dock, Aniso Tubule sample prep/insertion, Dragon pre-pack
- Saturday, 03/28: ISS Safety Briefing/crew handover
QUICK ISS Status – Environmental Control Group:
|
Component |
Status |
|
Elektron |
Off |
|
Vozdukh |
Manual |
|
[СКВ] 1 – SM Air Conditioner System (“SKV1”) |
On |
|
[СКВ] 2 – SM Air Conditioner System (“SKV2”) |
Off |
|
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) |
Stop |
|
Trace Contaminant Control System (TCCS) Lab |
Off |
|
Trace Contaminant Control System (TCCS) Node 3 |
Warmup |