ISS Daily Summary Report – 5/26/2022


Acoustic Diagnostics: The Acoustic Diagnostics measurements were performed. The Acoustic Upgraded Diagnostics In-Orbit (AUDIO) investigation tests the hearing of ISS crew members before, during, and after flight. This study assesses the possible adverse effects of noise and the microgravity environment aboard the ISS on human hearing. The investigation compares the relationship between the detection of otoacoustic emissions, sounds naturally generated from within the inner ear, and hearing loss levels when exposed to noisy environments.

Cerebral Autoregulation: The Cardiolab Portable Doppler hardware, laptop, and cables were setup in preparation of Cerebral Autoregulation Data measurement. As the body’s most important organ, the brain needs a strong and reliable blood supply, so the brain is capable of self-regulating blood flow even when the heart and blood vessels cannot maintain an ideal blood pressure. The Cerebral Autoregulation investigation tests whether this self-regulation improves in the microgravity environment of space. Non-invasive tests measure blood flow in the brain before, during, and after a long-duration spaceflight, and provide new insights into how the brain safeguards its blood supply in a challenging environment.

EXpedite the PRocessing of Experiments for Space Station Racks (EXPRESS Rack): Updated software load was performed on the Express Rack-2 laptop. The EXPRESS Racks support science experiments in any discipline by providing structural interfaces, power, data, cooling, water, and other items needed to operate science experiments in space.

eXposed Root On-Orbit Test System (XROOTS): XROOTS plants were checked, photos were taken, and observations were documented. Unfortunately, based upon downlinked photos, microbial growth was confirmed on modules 3 and 4. The investigators have requested these module cartridges be trashed.  The XROOTS investigation uses hydroponic and aeroponic techniques to grow plants without soil or other growth media. Video and still images enable evaluation of multiple independent growth chambers for the entire plant life cycle from seed germination through maturity. Results could identify suitable methods to produce crops on a larger scale for future space missions


ExtraVehicular Activity (EVA) Helmet Water Tests: Today, the crew ran multiple tests on the Extravehicular Mobility Unit (EMU) EVA helmet to investigate the anomaly during EVA #80. Today, the crew completed two water flow tests and a swish test on the EMU helmet to examine how the water forms in the helmet and to help determine the origins of the water seen during US EVA #80.

Water Recovery System (WRS) Contingency Water Container (CWC)-Iodine Fill: The CWC is a soft container with an inner bladder that can store a variety of liquids including humidity condensate, wastewater, and other unique fluids such as Extravehicular Mobility Unit (EMU) wastewater. Originally, CWCs were used for the transport and resupply of potable water from the shuttle to the ISS.  Today’s activity involved transferring water from the Potable Bus into a CWC-Iodine container using the Potable Water Dispenser (PWD). The crew monitored the offload time as a secondary control to protect the CWC-Iodine from over-pressurization.

Completed Task List Activities:

  • None

Today’s Ground Activities:
All activities are complete unless otherwise noted.

  • PRO Payload Application Software Install
  • Cold Atom Lab Ops Commanding and Downlink
  • HRF Rack 2 Rack Power Up Commanding

Look Ahead Plan

Friday, May 27 (GMT 147)

  • Astrobee Prep and Stowage Replace (NASA)
  • AstroPi Relocate to COL and Camera Pointing and Imagery (ESA)
  • CAL MTL Jumper leak Check (NASA)
  • Cerebral Autoregulation Measurement and Closeout (JAXA)
  • HRF1 Supply Inventory (NASA)
  • Optical NAV (Moon Imagery) Camera Ops (NASA)
  • POLAR-5 Transfer (NASA)
  • SABL-2 CO2 Cntl Valve (NASA)
  • Standard Measures Postsleep Question (NASA)
  • XROOTS Fluid Recovery (NASA)
  • ZR Units Test Ops (NASA)


  • Temperature Humidity Control (THC) Intermodule Ventilation (IMV) Flow Measurement Survey
  • Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain
  • Advanced Resistive Exercise Device (ARED) Cable Arm Rope (CAR) Install

Saturday, May 28 (GMT 148)

  • ISS HAM pass (NASA)


  • Crew Off-Duty Day

Sunday, May 29 (GMT 149)

  • SABL-1 CO2 Cntrl Swap (NASA)
  • XROOTS Nutrient Mix. Fluid Recovery and Plant Thinning (NASA)


  • Crew Off-Duty Day

Today’s Planned Activities:
All activities are complete unless otherwise noted.

  • Transfer CST-100 Cargo Operation [Deferred]
  • Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test [Deferred]
  • PSC Laptop Relocate [Deferred]
  • Acoustic Diagnostics Big Picture Words
  • Acoustic Diagnostics EveryWear Questionnaire
  • Acoustic Diagnostics Operations – Calibration and Measurement
  • Astrobee Prep
  • Cerebral Autoregulation Activity
  • EVA HAP Extender and Helmet Absorption Band Installation
  • Express Rack 2 CLS Software Start
  • Extravehicular Activity Helmet Water Flow Test
  • Extravehicular Helmet Swish Test
  • Glacier Desiccant Swap
  • Ultrasound 2 Post Exam
  • Venous Thromboemboelism (VTE) Scan Prep
  • Venous Ultrasound 2 Scan
  • HRF Generic HRF Centrifuge Frozen Blood Collection Activity
  • HRF Generic MELFI Sample Insertion
  • HRF Generic Urine Collection
  • MELFI Ice Brick Insert
  • Robot Programming Challenge 3 Technical Rehearsal
  • Ultrasound 2 HRF Rack 2 Power On
  • Video Camera Setup for EVA Absorption and Wick Tests
  • Water Recovery System CWC-Iodine Fill Terminate
  • XF705 Camcorder Setup
  • Xroots Status Check