ISS Daily Summary Report – 2/18/2021


AstroRad Vest: The crew donned the AstroRad Vest and demonstrated WHC activities while another crewmember took historical photos. A survey was completed after the demonstration. The AstroRad vest is a personal protective equipment (PPE) device which functions as a radiation shield for astronauts. The AstroRad shields astronauts from space-borne ionizing radiation in an efficient way, provides operational simplification, and allows for the use of recycled material on-board the vehicle. The concept behind the AstroRad evolved from a commercially available device, the 360 Gamma shield, made by StemRad Ltd., which is an effective wearable shield for first responders to radiation incidents on the Earth.

Confined Combustion: The crew prepare Confined Combustion samples for flame test operations, and then conducted four test sample burns with ground assistance. Confined Combustion examines the behavior of flame as it spreads in differently-shaped confined spaces in microgravity. Flame spread observations are translated into mathematical models for use in understanding the results and applying them to areas with different shapes.

Mochii: To help us further diagnose Mochii Microscope’s powering issues first experienced some time ago, the crew disconnected the Mochii Umbilical Cable, powered on Mochii systems and performed multimeter measurements on the Umbilical Cable. Of note, one of the resistance checks returned a different value than expected.  Other testing was planned, but there was not enough time to complete it.  The ground team will discuss a forward plan.  Mochii is a miniature scanning electron microscope (SEM) with spectroscopy to conduct real-time, on-site imaging and compositional measurements of particles on the International Space Station (ISS). Such particles can cause vehicle and equipment malfunctions and threaten crew health, but currently, samples must be returned to Earth for analysis, leaving crew and vehicle at risk. Mochii also provides a powerful new analysis platform to support novel microgravity science and engineering.

PBRE-WR:  The crew reviewed the procedures for the upcoming setup of the PBRE-WR experiment hardware in the MSG (Microgravity Science Glovebox).  PBRE-WR (Packed Bed Reactor Experiment-Water Recovery) examines flow rates of gas and liquid through a filtering substrate in the space station water processor, replacing oxygen with nitrogen. This investigation could help identify optimum conditions and enhance accuracy of models that predict simultaneous flow of gas and liquid (two-phase flow) in microgravity. 

The ISS Experience: The crew performed the setup and checkout of the ISS Experience EVA Z-Camera. The International Space Station Experience (The ISS Experience) is a cinematic virtual reality (VR) series documenting life and research aboard the space station. Filmed over multiple months, the immersive VR series documents different crew activities – from science conducted aboard the station to preparation for a spacewalk.


Extravehicular Activity (EVA) Preparations: The crew performed several activities in preparation for the upcoming IROSA Prep EVA. The crew performed an EMU swap and resize for EMU 3009 and 3015. They initiated operations on the Extravehicular Mobility Unit (EMU) Long Life Batteries (LLB) and also charged the Lithium Rechargeable (EVA) Battery Assembly (LREBA). They also regenerated the EMU metal oxide (METOX) cartridges.

Eye Exams: The US crew completed routine Optical Coherence Tomography (OCT) eye exams. OCT is an imaging technique analogous to ultrasound imaging that uses light instead of sound to capture micrometer-resolution, two- and three-dimensional images of tissue; In this case, the objects of interest are the crewmember’s eyes. Eye exams are performed regularly onboard in order to monitor crewmembers eye health.  Eyesight is one of the many aspects of the human body that is affected by long-duration stays in a microgravity environment. 

Cygnus Cargo Operations Review: the crew reviewed procedures for Cygnus cargo operations. This is in preparation for NG-15’s Launch and Birth which is currently scheduled for February 20th and February 22nd respectively.

Completed Task List Activities:

  • None

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

  • Columbus Smoke Detector (SD) ABIT Synchronization
  • Primary Power System (PPS) Beta Gimbal Assembly (BGA) Bias Pre-Positioned Load (PPL)
  • Payload Rack Officer ELC Patch Install
  • Atmosphere Revitalization System (ARS) Thermal Amine Vent
  • Atmosphere Revitalization System (ARS) Lab Carbon Dioxide Removal Assembly (CDRA) 4 Half Cycles [ACTIVE]

Look Ahead Plan

Friday, February 19 (GMT 050)

  • 3DMM Node 3 Sample Collection, Antimicrobial Coatings Touch, Airborne Particulate Monitor Status Check, DOSIS LED Check, ESA EPO PAXI, Food Acceptability Survey, ISS Experience Recording, Kibo conference, Plant Water Management stow, PBRE-WR setup, SAMS CU HD Swap Load, Standard Measures Post-sleep Questionnaire, Time Perception


  • Systems Operations Data File (SODF) Update
  • EVA tool config
  • EVA battery charge
  • On-board Training (OBT) Cygnus Robotics Onboard Trainer (ROBoT) Session 2

Saturday, February 20 (GMT 051)

  • Crew off duty day

Sunday, February 21 (GMT 052)

  • Crew off duty day

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

  • US Extravehicular Activity (EVA) Tether Inspection
  • ISS Experience EVA Z-Cam Checkout
  • Crew Dragon Tablet Sync
  • On-board Training (OBT) Cygnus Robotics Onboard Trainer (ROBoT) Self study Session
  • Columbus RF Cable Remove and Replace
  • AstroRad Vest Historical Documentation Photos
  • MELFI # Ice Brick Insert X
  • Cygnus Cargo Operations Review
  • AstroRad Vest Doff
  • Extravehicular Mobility Unit (EMU) Long Life Battery (LLB) Terminate
  • Extravehicular Mobility Unit (EMU) Swap
  • AstroRad Vest Survey 2
  • Confined Combustion Test Operations
  • Extravehicular Mobility Unit (EMU) Resize
  • Packed Bed Reactor Experiment Operations Overview
  • Cygnus Capture Review
  • Health Maintenance System (HMS) OCT2 Exam
  • Extravehicular Activity (EVA) Lithium Rechargeable (EVA) Battery Assembly (LREBA) Operations (OPS) Terminate (TERM)
  • Extravehicular Activity (EVA) Lithium Rechargeable (EVA) Battery Assembly (LREBA) Operations (OPS) Initiation (INIT)
  • Metal Oxide (METOX) Regeneration
  • Crew Dragon Cabin Maintenance