ISS Daily Summary Report – 6/08/2021


FIR/LMM (Fluids Integrated Rack/Light Microscopy Module): Following the completion of several weeks of observations of the ACE-T-2 science module, the crew performed the steps necessary to remove ACE-T-2 and install the ACE-T-11 science module. Advanced Colloids Experiment-Temperature Control and Gradient Sample-11 (ACE-T-11) involves the design and assembly of complex three-dimensional (3D) structures from colloids, or small particles suspended within a fluid medium, and control of particle density and phase behavior. Such structures are vital to the design of advanced optical materials and important for 3D printing and additive manufacturing. Assembling structures in microgravity provides insight into the relation between particle shape, crystal symmetry, density, and other fundamental factors.

CIR/ACME (Combustion Integrated Rack/Advanced Combustion via Microgravity Experiments): The crew replaced a 40% O2, 60% N2manifold bottle with another bottle of the same composition. This was performed in support of the CFI-G part 1 (Cool Flames Investigation with Gases) experiment. Cool diffusion flames were discovered during droplet combustion experiments aboard the ISS in 2012, and this initiated a rapidly growing field of combustion research. A cool flame is one that burns at about 600 degrees Celsius. A typical candle is about three-and-a-half times hotter, burning at around 1,400 degrees Celsius. Most internal combustion engines are designed using computer models that neglect cool flame chemistry, but ignition and flame propagation in engines depend on cool flame chemistry. Cool flame chemistry also has a significant impact on fuel octane and cetane numbers, whose understanding has large economic consequences.

Iceberg-2 installation and Iceberg-1 t/s: The crew installed Iceberg-2 and performed troubleshooting steps for Iceberg-1.  Iceberg-1 made a louder-than-expected buzzing noise when commanded to its 4 degree °C setpoint last week. Iceberg is a Double Locker equivalent designed for EXPRESS Rack operation and provides additional cold stowage resources aboard the International Space Station (ISS). The units provide an operating range of +4°C to -95°C. Iceberg is similar to the Glacier and Polar units currently in use but provides additional volume to help reduce the number of EXPRESS Rack locations needed.

Oral Biofilms in Space:  The crew continued the Oral Biofilms investigation session which began on Monday of this week, introducing either oral care bioactives or fixatives by reconfiguring flow through the Fluid Chambers in the Oral Biofilms Session Packs. Two of the four session packs started yesterday had to be trashed due to bag disconnections in the experiment. Effect of Environmental Stressors on Oral Biofilm Growth and Treatment (Oral Biofilms in Space) studies the effect of gravity on the behavior of oral bacteria, including the structure of the bacterial community, and changes in bacterial response to common oral care agents. The findings could support development of novel treatments to fight oral diseases such as caries, gingivitis, and periodontitis. The investigation also could provide insights into how microgravity affects the microbiome of other mucosal surfaces in the body.

SABL3 cable adjust:  The crew checked the power module cable for proper routing and corrected as necessary.  During this activity, they noted a gap in the internal sealing foam that was larger than another SABL unit and sent picture to the ground for assessment. The Space Automated Bioproduct Laboratory (SABL) supports a wide variety of investigations in the life, physical and material sciences with a focus on supporting research of biological systems and processes. It has over 23 liters of temperature-controlled volume with LED lighting for scientific hardware and investigations. It can be fitted to provide 5% CO2 (or any required concentration of CO2) for cell cultures or other types of investigations and has two USB 2.0 ports and two ethernet LAN connections. It also has switchable 28vdc and 5vdc power supplies for investigation use.

TICTOC: As a continuation of the experiment which started this past weekend, the crew set up the appropriate hardware and took photos of the 12 plant growth chambers.  The ground teams will use the images to evaluate the status of the growing plants. Target, the retail store, is funding the investigation Targeting Improved Cotton Through On-orbit Cultivation (TICTOC) that studies how root system architecture affects plant resilience to stress, water-use efficiency, and carbon sequestration during the critical phase of seedling establishment. Roots play a central role in plant stress resistance and survival, but their growth patterns depend upon gravity. This investigation examines how environmental factors and genes control development of roots in the absence of gravity.

Vascular Aging:  The crew marked the location of the right leg femoral artery for the experiment subject, attached ECG electrodes to the subject, and performed the appropriate ultrasound scans per experiment protocol.  Emerging data point towards linkages among cardiovascular health risk, carotid artery aging, bone metabolism and blood biomarkers, insulin resistance, and radiation. Data indicate that aging-like changes are accelerated in many ISS crew members, particularly with respect to their arteries. As part of the Space Environment Causes Acceleration of Vascular Aging: Roles of Hypogravity, Nutrition, and Radiation (Vascular Aging) investigation, ultrasounds of the arteries, blood samples, oral glucose tolerance, and wearable sensors from ISS crew members are analyzed.


Mobile Servicing System (MSS) Operations: Yesterday, the Robotics Ground Controllers powered up the Mobile Servicing System (MSS) and stowed the Special Purpose Dexterous Manipulator (SPDM). Today, they translated the Mobile Transporter (MT) to worksite 4 and used the Space Station Remote Manipulator System (SSRMS) to perform a survey of the SpX-22 Cargo Dragon trunk.

Internal Thermal Control System (ITCS) Node 3 Maintenance Canister Installation: The crew began with removing the ITCS Node 3 Gas Trap Plug and then proceeded with the installation of the ITCS maintenance canister. The canister was installed at two available QDs in order to replenish Ortho-Phthaladehyde (OPA) into the Node 3 ITCS. The maintenance canister will remain installed for 28 hours to allow for dispersal of OPA and thermal equalization of the canister.

Extravehicular Activity (EVA) Preparations: The crew performed EVA activities for the upcoming IROSA EVA on Wednesday, June 16. They installed the HD EMU Camera Assembly (HECA) and the EVA Helmet Interchangeable Portable (EHIP) light onto their EMU helmets. They also reviewed the upcoming EVAs in the Dynamic Onboard Ubiquitous Graphics (DOUG) Software and initiated a second cycle of EMU Metal Oxide cartridge regeneration.

Completed Task List Activities:

  • Waste & Hygiene Compartment (WHC) Solid Waste Container R&R

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

  • Mobile Transporter (MT) Translation
  • Dragon Trunk Survey [Active]
  • Airlock Configuration for METOX Regeneration

Look Ahead Plan:

Wednesday, June 9 (GMT 160)

  • AC Touch
  • AWP
  • BRIC-24
  • HRF blood/urine collection (repository)
  • Kidney Cells-02
  • Lyophillization-2
  • Oral Biofilms
  • Phospho-aging


  • Extravehicular Activity (EVA) Procedure Review
  • Fluid Transfer from EDV to Resupply Tank Using the Brine Transfer Hose
  • Dragon Cargo Transfer

Thursday, June 10 (GMT 161)

  • AC Touch
  • Bioculture system install
  • NRCSD-20
  • Food Acceptability
  • HRF blood/urine collection (repository)
  • HRF supply inventory
  • Lyophillization-2
  • Phospho-aging
  • RTPCG-2
  • TIME Perception


  • Extravehicular Activity (EVA) Tool Configuring
  • Internal Thermal Control System (ITCS) Node 3 Gas Trap Plug Replace
  • Deck Crew Quarters Exhaust Airflow Sensor Remove and Replace

Friday, June 11 (GMT 162)

  • Food Acceptability
  • FSL/Board exchange
  • FSL/Soft Matter Dynamics
  • GLACIER logistics
  • Iceberg-2 desiccant swap
  • Kidney Cells-02
  • Lyophillization-2
  • ManD print remove
  • Molecular Muscle Experiment-2
  • NanoRacks Module 93 photo


  • Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain
  • Internal Thermal Control System (ITCS) Node 3 Return to Ground Sampling
  • Dragon Cargo Transfer

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

  • SABL 3 Cable Adjustment
  • SpaceX-22 Dragon Emergency Response Review
  • Internal Thermal Control System (ITCS) Node 3 Gas Trap Plug Removal
  • TICTOC MWA Preparation
  • TICTOC Science Photography
  • Combustion Integrated Rack Manifold #2 Bottle Replacement
  • Internal Thermal Control System (ITCS) Node 3 Maintenance Canister Installation
  • Glacier (Unpowered) Remove from Express Rack
  • Health Maintenance System (HMS) Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test
  • Vascular Aging Resting Ultrasound Scan
  • Oral Biofilms In Space (OBiS) Flow Reconfiguration
  • PBA Pressure Gauge Photos
  • Iceberg Express Rack Install
  • Vascular Aging CDL Holter Arterial Blood Pressure Measurement
  • Health Maintenance System (HMS) Venous Thromboembolism (VTE) Scan Prep
  • Polar Desiccant Swap
  • Health Maintenance System (HMS) Ultrasound 2 Scan
  • Public Affairs Office (PAO) Event in High Definition (HD) – JEM
  • Configure the Toilet System for a pause in operations.
  • Fluids Integrated Rack Doors Open
  • Health Maintenance System (HMS) ISS Medical Accessories Kit (IMAK) Unpack from SpX-22
  • ACE-T11 Module Configuration
  • EVA HD EMU Camera (HECA) Installation
  • Iceberg Check
  • Dragon Cargo Transfer
  • EVA HD EMU Camera (HECA) File Transfer Initiation
  • Portable Onboard Computers (POC) Dynamic Onboard Ubiquitous Graphics (DOUG) Software Review
  • LSG Work Volume Deploy
  • Metal Oxide (METOX) Regeneration Initiation