ISS Daily Summary Report – 4/13/2021


Cell Biology Experiment Facility – Left (CBEF-L): The crew continued the series of CBEF-L activities with an Measurement Experiment Unit detachment, transfer of the temperature logger data, and closeout of the humidifier 2 system.  CBEF-L provides new capabilities with additional new resources such as Full High Definition video interface, Ethernet, 24 VDC power supply, and a larger diameter centrifugal test environment. By using the original CBEF and CBEF-L as one facility for the same experiment, the payload user is provided with an upgraded experimental environment that can handle the processing of more experimental samples for a wider array of experiments.

Gradient Heating Furnace (GHF): The crew used a multimeter to measure insulation resistance of the GHF Material Processing Unit heaters.  The GHF is a vacuum furnace that contains three heating blocks. Their positions and temperatures can be independently controlled, and various temperature profiles can be realized. This facility is mainly used for high quality crystal growth experiments using unidirectional solidification. GHF has an automatic sample exchange system that can be accommodate up to 15 samples to reduce crew operation.

HRF Centrifuge:  In response to recent centrifuge issues, the crew performed an HRF centrifuge LCD interface calibration.  The HRF centrifuges are typically used to process (separate) blood samples before they are placed in the freezer for long-term storage.

HRF Veg:  The crew filled out their Profile of Mood States questionnaires in support of the investigation.  The research of HRF Veg focuses on the overall behavioral health benefits of having plants and fresh food in space for various plants grown by other investigations.

Nanoracks Rotational Dynamics: The crew deflated 2 Rotational Dynamics soccer balls to prepare them for return to the ground.  The investigation examined the behavior of free-flying soccer balls in microgravity. Researchers measure the spin speed, wobble, and spin axis of balls with different shapes and textures and compare the data to Earth-based experiments. Results could improve the understanding of interaction between free-flying objects and their environment.

Veg-03K and Veg-03L Final Harvest:  Since the plants are at the end of their roughly 2-month life cycle, the crew performed the final sample gathering, harvest activities and termination of the experiment.  Organisms grow differently in space, from single-celled bacteria to plants and humans. But future long-duration space missions will require crew members to grow their own food, so understanding how plants respond to microgravity is an important step toward that goal. Veg-03 I/J/K/L (Veg-03) uses the Veggie plant growth facility to cultivate Extra Dwarf Pak Choi, Amara Mustard and Red Romaine Lettuce using Seed Film which are harvested on orbit with samples returned to Earth for testing. 


Joint Station Local Area Network (LAN) (JSL) Gigabit Cable Routing: Today the crew completed cable routing between Node 2 (N2) and the Japanese Experiment Module (JEM) as well as between N2 and Columbus (COL).  Cable mate is scheduled for tomorrow.  This mod kit adds Gigabit Ethernet cables to the main hubs of the network and once mated, the cables will improve JSL network performance on ISS. 

Oxygen Generation Assembly (OGA) Resistance Measurements: The crew performed resistance measurements on the J1 connector of both OGA Orbital Replacement Units (ORUs) S/N 003 & S/N 004 in a data gathering effort.  Both units were installed in late March but failed to activate with pump speeds that never got above 0 rpm.  Today’s measurements will help the ground teams in their root cause investigation.

Mobile Servicing System (MSS) Operations: Yesterday, Robotics Ground Controllers powered MSS

and maneuvered the Space Station Remote Manipulator System (SSRMS) to the translate configuration.

The Mobile Transporter (MT) was then translated from Worksite #2 (WS2) to WS6 and SSRMS was maneuvered to grapple SPDM on Lab and to relocate it on Mobile Base System PDGF2.

After SSRMS released SPDM, it was maneuvered in position to perform a monthly test on Elbow Pitch joint. 

Completed Task List Activities:

  • 64S USOS unpack
  • 77P USOS unpack

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

  • MSS powerup
  • SSRMS walkoff to MBS3
  • MT translation from WS6 to WS4

Look Ahead Plan

Wednesday, April 14 (GMT 104)

  • AC touch, ER1 rotate and t/s, Food Acceptability, MSPR2 workbench ops, RFID photos, SAMS CU activation, SERFE, Standard Measures pre-sleep questionnaires, T2AR ops


  • OBT Crew-1 free flight depress response & emergency departure refresher
  • EVA PGT checkout
  • N2 UOP 4 install

Thursday, April 15 (GMT 105)

  • Astrobee/Gecko-2, COSMIC, FNS relocate, MELFI dewar audit, Micro-16, PL NAS vent clean, RR habitat stow, Standard Measures, Transparent Alloys, Video cable wanted poster


  • Crew-1 deorbit entry and landing contingency refresher/conference with ground
  • EVA HECA cable install
  • Change of Command ceremony 

Friday, April 16 (GMT 106)

  • AC Touch, AstroPi tape removal, AWP, DOSIS-3D, Food Acceptability, HRF Veg questionnaire, Kermit, PLT5 setup, RTPCG-2, SCEM, Standard Measures, Time Perception, Veg-03 hardware deactivation


  • 63S undock
  • OBT Crew-1 nominal departure/deorbit
  • Crew-1 deorbit paper sim with ground team

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

  • Reminder Periodic Health Status (PHS) Evaluation
  • Health Maintenance System (HMS) Periodic Health Status (PHS) Evaluation Setup
  • Pump Package Assembly (PPA) Acoustic Blanket Deploy
  • Health Maintenance System (HMS) Periodic Health Status (PHS) Evaluation – Subject
  • Health Maintenance System (HMS) Periodic Health Status (PHS) Evaluation – Crew Medical Officer
  • Gradient Heating Furnace (GHF) Heating Units Insulation resistance Measurement
  • VEG-03 MWA Preparation
  • Health Maintenance System (HMS) Periodic Health Status (PHS) Stow Hardware
  • ISS Crew Adaptation
  • Gathering PCS for Crew-2
  • Joint Station LAN (JSL) Node 2/JEM Gigabit Cable Routing
  • VEG-03 MELFI Insertion #1
  • VEG-03 Clean and Dry
  • Stowage of the equipment to be returned to earth
  • Personal CO2 Monitors Data Collection
  • Actiwatch Plus HRF Rack 1 Setup
  • HRF Centrifuge Placeholder
  • ISS Crew departure preparation
  • NanoRacks Rotational Dynamics Regulation Ball Deflation
  • Cell Biology Experiment Facility Left (CBEF-L) Meas Exp Unit A Detachment
  • Joint Station LAN (JSL) Node 2/COL Gigabit Cable Routing
  • Adlink Mini PC Troubleshooting
  • Cell Biology Experiment Facility Left (CBEF-L) Humidifier Detachment
  • Environmental Health System (EHS) Potable Water Dispenser (PWD) Sample Collect
  • JEM Wireless Instrumentation System Environmental Monitor Remote Sensor Unit Battery R&R
  • Cell Biology Experiment Facility Left (CBEF-L) Meas Exp Unit A Closeout
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Potable Water Dispenser (PWD) Sample Analysis
  • Oxygen Generator Assembly (OGA) Pump ORU Troubleshooting
  • Temperature Data Transfer for Cell Biology Experiment Facility Left (CBEF-L) Checkout
  • Actiwatch Plus HRF Rack 1 Swap
  • Health Maintenance System (HMS) Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test
  • Atmospheric Control System (ACS) Nitrogen Oxygen Recharge System (NORS) Oxygen Transfer to Low Pressure O2 Tank
  • Handover of Increment 65 Crew
  • IVA Tool Box Label Installation
  • Environmental Health System (EHS) Coliform Water Processing
  • Pump Package Assembly (PPA) Acoustic Blanket Return
  • Actiwatch Plus HRF Rack 1 Stow
  • Health Maintenance System (HMS) Spaceflight Cognitive Assessment Tool for Windows (WinSCAT) Test
  • Environmental Health System (EHS) Total Organic Carbon Analyzer (TOCA) Sample Data Record
  • Early Mission Debrief Conference
  • EVA Battery Operations Terminal Charge Terminate
  • HRF Veg Subject Operations Profile of Mood States Short Form Questionnaire
  • Daily Planning Conference
  • Crew Choice Event Set Up
  • CCE Preparation
  • Crew Choice Event
  • Reminder to Clear IMV Inlet