ISS Daily Summary Report – 4/23/2020

Actiwatch Plus: The crew installed four Actiwatch Plus units into the HRF rack USB hub and verified charging and data downlink connection. Four new units were then plugged into the USB for charging. The Actiwatch is a waterproof, nonintrusive, sleep-wake activity monitor worn on the wrist of a crewmember. The device contains a miniature uniaxial accelerometer that produces a signal as the subject moves. The data are stored in nonvolatile memory within the Actiwatch until they are downloaded for analysis.

MSL SCA-GEDS-German (Materials Science Laboratory- Sample Cartridge Assembly-Gravitational Effects on Distortion in Sintering): The crew inserted a new test sample cartridge into the MSL core facility. Liquid phase sintering is an important means to fabricate net-shape composite materials for applications over a range of industries. The science of liquid phase sintering is about 50 years old, but practice dates from the 1400s when gold was used to bond platinum in Columbia and Ecuador. Today, it is a mainstay in a diversity of fields, such as metal cutting tools, armor piercing projectiles, automotive engine connecting rods, and self-lubricating bearings. Future applications include use of liquid phase sintering as a means to perform in-space fabrication and repair, and for example using lunar regolith to fabricate structures on the moon or using metal powder to fabricate replacement components during extraterrestrial exploration. The MSL SCA-GEDS-German (NASA Sample Cartridge Assembly-Gravitational Effects on Distortion in Sintering) experiment focuses on determining the underlying scientific principles to forecast density, size, shape, and properties for liquid phase sintered bodies over a broad range of compositions in Earth-gravity (1g) and microgravity (μg) conditions.

CIR (Combustion Integrated Rack): The crew performed a replacement of the CIR FOMA (Fuel Oxidizer Management Assembly) Calibration Unit in preparation for the next set of s-flame runs. The CIR includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion experiments in microgravity.


Periodic Health Exam (PHS): Today the crew completed a periodic health evaluation. During the evaluation, vital signs are obtained and an ear examination is conducted by taking images of the tympanic membranes and the external ear. The data and imagery is then downlinked for review by a medical specialist. This is the first PHS of the increment for the newly arrived 62S crew.

Urine Processing Assembly (UPA) Brine Filter Replacement Prep:  The crew retrieved the new brine filter and performed two Wastewater Storage Tank Assembly (WSTA) fills today. These activities are in preparation for the Brine Filter Changeout on tomorrow’s plan.

Completed Task List Activities:

  • Cygnus Cargo Ops (ongoing)

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

  • Weekly SD ABIT Sync
  • RGN UPA TFP Override
  • EATCS PM Outlet Isolation Valve Close Cmd Inh
  • ATS PPL Update
  • Thermal Amine Scrubber Test

Look Ahead Plan

Friday, 4/24 (GMT 115)

  • CIR-FOMA-Calibration unit prep (NASA)
  • GEDI Photo (NASA)
  • JEM Airlock depress (NASA)


  • MAX CEVIS Session
  • PPFS Troubleshooting
  • Urine Processor Assembly (UPA) Brine Filter Changeout
  • Recycle Tank Drain & Fill
  • HAM Radio Powerdown
  • USOS Shutter Close

Saturday, 4/25 (GMT 116)

  • No payload activities


  • Hatch Seal Inspection
  • HAM Radio Powerup
  • USOS Shutter Close 

Sunday, 4/26 (GMT 117)

  • No payload activities


  • No systems activities

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

  • NEUROIMMUNITET. KORREKTSIYA. Blood/Hair/Saliva Sample Collection
  • NEUROIMMUNITET. KORREKTSIYA. Process blood sample in Plasma-03 centrifuge and handover Samples to USOS for MELFI Insertion
  • Insertion of Russian experiments blood samples into MELFI
  • Health Maintenance System (HMS) Periodic Health Status (PHS) Evaluation
  • Actiwatch Plus HRF Rack 1 Setup/Swap/Stow
  • UPA Brine Filter Gather
  • Inventory Management System (IMS) conference
  • ISS Crew Orientation
  • NEUROIMMUNITET. Questionnaire data entry (Psychological testing) & Pamyat (Memory) Test
  • Replacement of ПФ1, ПФ2 Dust Filters and Cleaning В1, B2 Fan Screens in MRM2 and DC1
  • Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fill
  • RS1, RS2 Central Post Laptops Inspection and Cleaning
  • Material Science Laboratory SCA Exchange NB1#5
  • Restoring SM Panel 134 Function
  • PILLE dosimeter readings download
  • Crew Quarters Intermediate Cleaning
  • Combustion Integrated Rack FOMA Cal Unit Replacement
  • Visual inspection of ПН28-120 voltage converter (behind SM panel 231А)
  • Food Physiology Crew Diet Briefing
  • Photo TV Battery Charge Initiation
  • JEM PS-120 Wireless Adapter connection to MLT2
  • Program Management/ISS Crew Conference
  • Flight Director/ISS CREW CONFERENCE