ISS Daily Summary Report – 5/06/2021


Celestial Immunity: The crew performed activities related to the inoculation, treatment injection, and sample collection for the Celestial Immunity cultures.  This project seeks to gain a broad understanding of how gravity affects overall human immune function and potentially uncover novel pathways of immune function that can be exploited to develop better vaccines and immunobiologics for human use. The project will build on earlier studies that evaluated lymphocyte (a type of white blood cell) function in microgravity. The project will also evaluate whether gravity-regulated immune pathways are affected by age by examining cells from both young adult and elderly donors in parallel.

DOSIS-3D:  The crew installed the DOSIS-3D main box in its intended configuration and took photos of the suite of 11 DOSIS dosimeters. International Space Station crewmembers are continually exposed to varying levels of radiation which can be harmful to their health. Dose Distribution Inside the International Space Station – 3D (DOSIS-3D) uses several active and passive detectors to determine the radiation doses inside the ISS. The goal is a three-dimensional radiation map covering all sections of the ISS.

Food Acceptability: Using the data collection tool an available Station Support Computer (SSC), the crew filled out a Food Acceptability Survey. This investigation seeks to determine the impact of repetitive consumption of food currently available from the spaceflight food system. Results will be used in developing strategies to improve food system composition to support crew health and performance on long duration missions.

SBC-2: The crew powered up the recently installed SBC-2 experiment hardware.  Installation of this experiment hardware was delayed due to a tool incompatibility which was recently resolved.  Spaceborne Computer-2 High Performance Commercial Off-The-Shelf (COTS) Computer System on the ISS (Spaceborne Computer-2, or just SBC-2) builds upon the successes of the previous Spaceborne Computer, exploring how commercial off-the-shelf computer systems can advance exploration by processing data significantly faster in space with edge computing and artificial intelligence (AI) capabilities. SBC-2 further tests additional techniques for recovering or mitigating errors in the extreme environment of unprotected solar radiation, galactic cosmic radiation (GCR) and other events. SBC-2 has an anticipated 24 to 36-month mission duration.

SUBSA (Solidification Using a Baffle in Sealed Ampoules): As a continuation of the BRAINS investigation, the crew exchanged the calibration ampoule for the first science ampoule in the SUBSA. BRazing of Aluminum alloys IN Space (SUBSA-BRAINS) examines differences in capillary flow, interface reactions, and bubble formation during solidification of brazing alloys in microgravity. Brazing technology bonds similar materials (such as an aluminum alloy to aluminum) or dissimilar ones (such as aluminum alloy to ceramics) at temperatures above 450°C. It is a potential tool for construction of human space habitats and manufactured systems as well as repair of damage from micrometeoroids or space debris.


Fluid System Servicer (FSS) Setup Node 3: Crew set up the Fluid System Servicer (FSS) Fluid Control Pump Assembly (FCPA) in order to refill the Node 3 Moderate Temperature Loop (MTL) and Low Temperature Loop (LTL) Pump Package Assembly (PPA) Accumulators. After FSS operations were completed, the FSS FCPA and Jumpers were be drained and purged. This procedure has occurred now that the Node 3 Port Endcone has been cleared of stowage.

Oxygen Generation System (OGS) Pump ORU Maintenance: Crew will inject a thermal expansion air bubble into the pump to protect Pump ORU S/N 4 and allow for removal of a Thermal Expansion Device needed for a different ORU. The crew will then purge the OGS Hydrogen Sensor with dry oxygen to prevent the possibility of condensation on the sensor when OGS is unpowered. Then the crew will Remove S/N 1 OGS Pump ORU and Oxygen Generation System (OGS) Rack Electrical Harness P-Clamp, and lastly replacing the Pump ORU with S/N 6.

Max Cycle Ergometer with Vibration Isolation and Stabilization (CEVIS): The crew completed Max CEVIS today which is used by the medical community to evaluate astronauts’ aerobic fitness. The test is performed every 90 days and upon the crew’s arrival and departure from the ISS.

DOSIS Main Box Repositioning and Photo Audit: Crew reinstalled the DOSIS Main Box in its proper configuration. Crew also was asked to take pictures of eleven dosimeters (ten Passive Detector Packs and one Triple Detector Pack) that are deployed in the ColumbusModule.

EDV Changeout for UTS: Crew swapped out the offload EDV and the mainline EDV, so that Urine Transfer System (UTS) offloading can take place.

Completed Task List Activities:

  • None

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

  • Fluid System Servicer (FSS) Refill Support
  • Regenerative Environmental Control and Life Support System (ECLSS) Oxygen Generation System (OGS) Pump Test
  • Regenerative Environmental Control and Life Support Systems (ECLSS) Oxygen Generator Assembly (OGA) Cell Discharge
  • Solidification Using Baffles in Sealed Ampoules Sample Exchange

Look Ahead Plan:

Friday, May 7 (GMT 127)

  • AC Touch
  • Astrobee off
  • Celestial Immunity
  • CIR manifold bottle replace
  • ELF sample holder change
  • ESA EPO AstroPi config
  • Food Acceptability
  • Food Physiology
  • JAXA video take 1
  • HRF2 troubleshooting deconfiguration
  • Nanoracks Platform 2 module remove
  • Standard Measures/Repository 


  • Crew Provisions Consolidation
  • Environmental Health System (EHS) – Compound Specific Analyzer-Combustion Products (CSA-CP) Extended Maintenance
  • In-Flight Maintenance Starboard Stall Mounting Bracket Remove & Replace

Saturday, May 8 (GMT 128)

  • AWP Doff
  • Celestial Immunity
  • Standard Measures 


  • Weekly Cleaning

Sunday, May 9 (GMT 129)

  • AWP Doff
  • HRF urine setup 


  • Crew Off-Duty Day

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

  • Adlink Mini PC Restow
  • Astrobee Off
  • Celestial Immunity Thaw and Centrifuge
  • Celestial Immunity Crew Handover
  • Celestial Immunity LSG Staging
  • Celestial Immunity MELFI Sample Insertion
  • Celestial Immunity MELFI Sample Retrieve
  • Celestial Immunity Treatment and Sample
  • Combustion Integrated Rack Bottle Gather
  • ARED Power down
  • Countermeasures System (CMS) Max Cycle Ergometer w/Vibration Isolation & Stabilization (CEVIS) Portable PFS Conclude
  • Max Cycle Ergometer w/Vibration Isolation & Stabilization (CEVIS) Portable PFS Partial Stow
  • Max Cycle Ergometer w/Vibration Isolation & Stabilization (CEVIS) Portable PFS Power Up
  • Max Cycle Ergometer w/Vibration Isolation & Stabilization (CEVIS) Portable PFS Subject
  • ISS HAM Kenwood Radio Power Up
  • DOSIS Main Box repositioning and photo audit
  • Acoustic Monitor Stow
  • Environmental Health System (EHS) – Formaldehyde Monitoring Kit (FMK) Stow Operation
  • ESA Weekly crew conference
  • Flight Director/ISS CREW CONFERENCE
  • Food Acceptability Survey
  • Fluid System Servicer (FSS) Setup Node 3
  • Health Maintenance System (HMS) – ESA Nutritional Assessment
  • Health Maintenance System (HMS) ISS Food Intake Tracker (ISS FIT)
  • Private Exercise Conference (PEC)
  • HRF Generic Frozen Blood Collection Hardware Setup First Time Performance
  • HRF Generic MELFI Sample Insertion Operations
  • HRF Generic MELFI Sample Retrieval and Insertion Operations
  • HRF Generic Saliva Collection 10 Minutes
  • HRF Generic Urine Collection Male
  • Oxygen Generation System (OGS) Rack Electrical Harness P-Clamp Removal
  • Oxygen Generation System (OGS) Pump ORU Maintenance
  • Oxygen Generation System (OGS) Pump ORU Maintenance Part 1
  • Oxygen Generation System (OGS) Pump ORU Maintenance, Part 2
  • In Flight Maintenance (IFM) Oxygen Generator System (OGS) Gather
  • Inventory Management System (IMS) Conference
  • ISS Crew Orientation
  • LSG Primary Crew Restraint Fold
  • Power down NOD3 Plug-in Plan (PIP) hardware
  • Node 3 UOP Install Gather
  • N3 Utility Outlet Panel (UOP) Installation Big Picture Words (BPW)
  • Photo/TV Camcorder Setup Verification
  • Treadmill 2 (T2) Exercise Video Equipment Stow
  • Photo/TV Camcorder Setup Verification
  • Public Affairs Office (PAO) Event in High Definition (HD) in Columbus
  • Regenerative Environmental Control and Life Support System (ECLSS) Oxygen Generation System (OGS) Hydrogen Sensor ORU Purge Adapter (HOPA) Operations
  • Spaceborne Computer-2 Power ON
  • T2 SSC Relocation for Alternative Power Chain
  • Solidification Using Baffles in Sealed Ampoules Sample Exchange
  • Urine Transfer System Offload EDV Swap
  • Waste and Hygiene Compartment (WHC) Manual Fill Initiation
  • Waste and Hygiene Compartment (WHC) Manual Fill Termination