Fluid Shifts: A 50S crewmember performed their Flight Day (FD) 180 Fluid Shifts Chibis operations in the Russian Segment. They donned the Lower Body Negative Pressure (LBNP/Chibis) device while the operator, with ground support in Moscow, assisted in the medical monitoring. While the subject was in the LBNP and experiencing the negative pressure (pulling the fluid feetward), the USOS crewmember took measurements for Cerebral and Cochlear Fluid Pressure (CCFP), a Distortion Product Otoacoustic Emission (DPOAE) test, Optical Coherence Tomography (OCT), and a Tonometry examination. Fluid Shifts is a joint NASA-Russian experiment that investigates the causes for severe and lasting physical changes to astronaut’s eyes. Because the headward fluid shift is a hypothesized contributor to these changes, reversing this fluid shift with a lower body negative pressure device is investigated as a possible intervention. Results from this study may help to develop preventative measures against lasting changes in vision and eye damage. NeuroMapping: The crew set up the Neuromapping hardware and executed testing in both a “strapped in” and “free floating” body configuration. During the test, the crew completed three Behavioral Assessments: mental rotation, sensorimotor adaptation, and motor-cognitive dual tasking. The NeuroMapping 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 would take for the brain and body to recover from possible changes. Previous research and anecdotal evidence from astronauts suggests movement control and cognition can be affected in microgravity. The investigation performs structural and functional magnetic resonance brain imaging (MRI and fMRI) to assess changes that occur after spending months on the ISS. Pressurized Mating Adapter (PMA) 3 Operations: Following this week’s operations, the crew restowed hardware and installed the PMA retention net to keep the Androgynous Peripheral Assembly System (APAS) hatch operational envelope clear of stowage. The crew then closed the PMA 3 hatch. Extravehicular Mobility Unit (EMU) Operations: Following last week’s EVA #42, the crew performed suit maintenance including scrubbing and iodination of EMU and Airlock cooling water loops. A water sample was taken for subsequent conductivity testing which was also completed today. Control Moment Gyroscope (CMG) – Ground controllers successfully completed the five year CMG gimbal maintenance on CMG3 and CMG4. The gimbal maintenance is a 360-degree rotation of the inner gimbals to redistribute the lubricant amongst the gear teeth and to change the wear pattern of the CMG torquer gear train. Today’s Planned Activities All activities were completed unless otherwise noted. FLUID SHIFTS. Comm configuration for the experiment FLUID SHIFTS. Gathering and Connecting Equipment for TV coverage ECLSS Recycle Tank Drain Fluid Shifts OCT Service Module Setup Alternate Max CEVIS Exercise Video Setup. Return equipment conference. FLUID SHIFTS. Connecting PDU, OCT Ethernet, and HRF in lieu of RSE-Med FROST2 Troubleshoot Fluid Shifts OCT Service Module Power On PMA3 Ingress Temperature Survey CONTROL. Switching Indicator-ISS P/L measuring modes Max CEVIS Exercise Video Stow Crew Earth Observation Shutter Close IMS Tagup Fluid Shifts CCFP Service Module Configuration NeuroMapping Experiment Neurocognitive Test Video – Subject Hardware prepack for return and disposal on Soyuz 733 Fluid Shifts DPOAE Service Module Setup FLUID SHIFTS. Don Chibis FLUID SHIFTS. Assistance during Operation with CHIBIS and GAMMA-1M. Fluid Shifts Tonometry Service Module Setup Fluid Shifts Experiment Service Module Data Collection RGN Wastewater Storage Tank Assembly (WSTA) Fill FLUID SHIFTS. Doff Chibis Fluid Shifts CCFP DPOAE Service Module End Glisser inventory audit EMU Cooling Loop Maintenance Scrub Initiation Fluid Shifts Tonometry Service Module Stow Fluid Shifts OCT Service Module Power Off FLUID SHIFTS. Disconnecting PDU, OCT, and connecting RSE-Med FLUID SHIFTS. De-route US inverter from СУБА and cable assembly Fluid Shifts OCT Service Module Stow Multi-purpose Small Payload Rack (MSPR) /Group Combustion Module (GCM) Component Deactivation Photo TV Soyuz Imagery Fluid Shifts CCFP HRF PC Service Module Stow RGN Wastewater Storage Tank Assembly (WSTA) Fill FLUID SHIFTS. Deactivation of КСПЭ Equipment and Closing Applications on Central Post SSC FGB (ГА) Vacuum Cleaning USOS Window Shutter Close Combustion Integrated Rack Alignment Guide Removal FLUID SHIFTS. Restoring nominal comm config Fluid Shifts Hardware Final Gather Fluid Shifts Hardware USOS Transfer LBNP Training (PRELIMINARY) Tagup with specialists LBNP (ОДНТ) training (preliminary) Extravehicular Mobility Unit (EMU) Post Scrub Cooling Loop Water (H2O) Sample PMA3 Cargo Restow Crew Departure Preparations for Return to Earth Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Iodination Complete packing of SCU 1009 for return on 49S MERLIN 5 Desiccant Removal Installation of the right crank lock spring and replacement of bushings on VELO. СОЖ maintenance Long Duration Sorbent Testbed Status Check. RGN Wastewater Storage Tank Assembly (WSTA) Fill Extravehicular Mobility Unit (EMU) Conductivity Test Fluid Shifts HRF PC 3 Reconnect Fluid Shifts OCT Laptop US Lab Setup Crew Departure Prep Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Fill Part 3 Public Affairs Office (PAO) High Definition (HD) Config LAB Setup Tightening Soyuz 733 QD Screw Clamps Fluidics laptop installation PAO Preparation Verification of the content on the Fluidics Data Hard Drive and LTU Stow Public Affairs Office (PAO) Event in High Definition (HD) – Lab Node 2 Zenith Center Disk Cover Install MRM1-FGB Screw Clamp Tightening RGN Wastewater Storage Tank Assembly (WSTA) Fill Node 2 Zenith Hatch Seal Inspection PMA 3 desiccant installation Node 2 Zenith Hatch Close Fluid Shifts Hardware Stow Meteor Shutter Open EVA Extravehicular Mobility Unit (EMU) Cooling Loop Scrub Deconfiguration Stow Syringes used in H2O Conductivity Test Completed Task List Items COL PWS SW Load WHC KTO Replacement MD Print Removal and Stow Veg03 Plant Water/Photo WRS WW sample Ground Activities All activities were completed unless otherwise noted. EMU maintenance support JEMRMS maneuver SSRMS walkoff to PDGF3, MT translate to WS6 Three-Day Look Ahead: Saturday, 05/20: Crew off duty, housekeeping Sunday, 05/21: Crew off duty Monday, 05/22: CubeSat quad deployer swap, Magnetic 3D Cultures culture prep, COL Bays 1,2,3 cleanup, CardioOx Ultrasound QUICK ISS Status – Environmental Control Group: Component Status Elektron On Vozdukh Manual [СКВ] 1 – SM Air Conditioner System (“SKV1”) Off [СКВ] 2 – SM […]