ISS Daily Summary Report – 8/18/2021


Astrobee:  The crew removed the Perching Arm from an Astrobee Freeflyer Honey in preparation of ReSWARM operations.  Astrobee is made up of three free-flying, cube-shaped robots which are designed to help scientists and engineers develop and test technologies for use in microgravity to assist astronauts with routine chores, and give ground controllers additional eyes and ears on the space station. The autonomous robots, powered by fans and vision-based navigation, perform crew monitoring, sampling, logistics management, and accommodate up to three investigations.

Cell Gravisensing:  A crewmember performed a closeout of the Confocal Space Microscopy for Cell Gravisensing Experiment.  The Elucidation of the Gravisensing Mechanism in Single Cells (Cell Gravisensing) investigation studies how cells sense gravity.  While recent research has revealed that individual animal cells can detect gravity, the mechanism for this sensing is largely unknown.  This investigation analyzes changes in tension in cell stress fibers during spaceflight as a possible mechanism.

Lumina (Fiber-optic Active Dosimeter):  A crewmember installed the LUMINA device in front of the European Physiology Module (EPM) rack, and performed data transfer and parameter calibrations via the EveryWear App using the crew iPad.  Lumina is an active fiber dosimeter that monitors, in real-time, the received radiation dose by exploiting the capacity of optical fibers to darken when exposed to radiation.  The dosimeter provides reliable dose measurements in complex environments such as the ones associated with electrons, protons, gamma-ray or X-ray photons or neutrons.


Extravehicular Activity (EVA) Preparation:  In preparation for the IROSA 4A preparation EVA currently scheduled for August 24th, the crew completed the EVA Procedure Reviews, IROSA Mod Kit 1 Unpack and Stow in EVA bag, EVA Procedure Conference, EVA SAFER VRT and EVA Tool Configuration.

Node 3 Utility Outlet Panel (UOP) 5 Power Cable W3727 Connector Troubleshooting:  Today, the crew performed troubleshooting steps on the Node 3 UOP5, during which the DDCUs N31B and N34A were powered off. The troubleshooting was completed, and the N3 UOP5 checkout was successful. The N3 UOP5 was installed on GMT 127, but was no joy upon powerup. Voltage and resistance checks were done on GMT 188 and showed that there was no voltage at the connectors and infinite resistance which indicated that the cable was either damaged or not connected at the RPCM. UOPs aboard the ISS are used to provide power and data connectivity to portable equipment. 

Virtual Reality Training (VRT) Extravehicular Activity (EVA) Simplified Aid for EVA Rescue (SAFER): As part of the EVA Prep, the EVA crew performed their SAFER training by utilizing the VRT equipment. This lesson provides a review of the SAFER components and procedures, as well as hands-on experience in a virtual reality environment using SAFER to perform self-rescue operations.

Completed Task List Activities:

  • None

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

  • Node 3 UOP Installation Powerdown
  • Crew Dragon weekly checkout
  • Caution and Warning (C&W) Hardware Panel Verification
  • Post Node 3 UOP Installation Repower

Look Ahead Plan

Thursday, August 19 (GMT 231)

  • Anti-Atrophy Medium Exchange (JAXA)
  • Astrobee Prep (NASA)
  • Behavioral Core Measures (NASA)
  • Eklosion Install (ESA)
  • Lumina Data Transfer (ESA)
  • Manufacturing Device print removal (NASA)
  • MSL SCA Exchange B3 #4 (ESA)
  • Repository Urine and Blood Collect (NASA)
  • RESWARM setup and Checkout (NASA)
  • Ring Shear Drop Syringe Removal and install (NASA)


  • EVA Prep
  • Cygnus Cargo Ops
  • Acoustic Monitoring
  • CASA Keep Out Zone (KOZ) Label Installation

Friday, August 20 (GMT 232)

  • Cardinal Muscle Microscopy (NASA)
  • Cool Flames ACME bottle change (NASA)
  • Food Acceptability (NASA)
  • Lumina Data Transfer (ESA)
  • Plant Habitat-04 Debris removal Procedure (NASA)
  • Repository Urine Collect (NASA)


  • EVA Prep
  • SpX-23 Dragon Rendezvous Prep

Saturday, August 21 (GMT 233)

  • Cardinal Muscle BioCell Fixation (NASA)
  • Repository Urine setup (NASA)
  • Astrobee off (NASA)


  • EVA Prep

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

  • Power on the Adlink Mini PC
  • Astrobee Perching Arm Removal
  • Behavioral Core Measures ROBoT-r Test
  • Caution and Warning (C&W) Hardware Panel Verification
  • Cell Gravisensing Fixation Cartridge Bag MELFI Retrieval
  • Cell Gravisensing-1 Confocal Space Microscopy (Mycroscope) Closesout
  • ARED Powerup
  • Cold Stowage Double Coldbag Icebrick Stow
  • Cupola Window Shutter Close
  • Double Cargo Transfer Bag Fit Check
  • ExPRESS Rack 6 CLS Software Finish
  • ExPRESS Rack 6 CLS Software Start
  • Extravehicular Activity (EVA) Procedure Conference
  • Extravehicular Activity (EVA) Procedure Review
  • Virtual Reality Training (VRT) Extravehicular Activity (EVA) Simplified Aid for EVA Rescue (SAFER)
  • Extravehicular Activity (EVA) Tool Configuring
  • Food Acceptability Survey
  • Health Maintenance System (HMS) ISS Food Intake Tracker (ISS FIT)
  • Health Maintenance System (HMS) Profile of Mood States (POMS) Questionnaire
  • Health Maintenance System (HMS) Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test
  • HRF Generic Frozen Blood Collection Hardware Setup
  • HRF Generic Urine Collection Setup
  • IROSA Mod Kit 1 Unpack
  • LUMINA device installation, data transfer and parameters calibration
  • Power down NOD3 Plug-in Plan (PIP) hardware
  • Repower Plug-in Plan (PIP) hardware in NOD3.
  • Joint Station Local Area Network (LAN) (JSL) Network Information for JSL Administration (NINJA) Swap
  • Public Affairs Office (PAO) Event in High Definition (HD) – JEM
  • Public Affairs Office (PAO) Social Media Event
  • Regenerative Environmental Control and Life Support System (ECLSS) Oxygen Generation System (OGS) Activation QD Connection
  • Regenerative Environmental Control and Life Support System (ECLSS) Oxygen Generation System (OGS) Hydrogen Sensor ORU Purge Adapter (HOPA) Operations
  • OGS HOPA Operations Equipment Gather
  • Video recording of greetings
  • Ring-Sheared Drop MELFI Sample Retrieve
  • Sidekick Gather Charge
  • Sidekick Setup
  • Sidekick Stow
  • Treadmill 2 SSC Powerup
  • Node 3 Utility Outlet Panel (UOP) 5 Power Cable W3727 Connector Troubleshooting
  • Transfer Cygnus Cargo Operations