ISS Daily Summary Report – 4/24/2020

CIR (Combustion Integrated Rack): The crew prepared the CIR to allow ground commanding of the FOMA (Fuel Oxidizer Management Assembly) Calibration. The CIR includes an optics bench, combustion chamber, fuel and oxidizer control, and five different cameras for performing combustion experiments in microgravity.

GEDI (Global Ecosystem Dynamics Investigation): The crew performed still photography of the GEDI external hardware from the aft JEM window. The Global Ecosystem Dynamics Investigation (GEDI) provides high-quality laser ranging observations of the Earth’s forests and topography required to advance the understanding of important carbon and water cycling processes, biodiversity, and habitat.


Urine Processing Assembly (UPA) Brine Filter:  As part of regular maintenance, the ISS crew opened the UPA Fill Drain Valve Enclosure, removed the installed/old brine filter and replaced it with a new one. UPA brine filters are replaced every 60 days.

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.

Portable Pulmonary Function System (PPFS) Troubleshooting: The crew performed a leak detection assessment on the Human Research Facility (HRF) gas cylinder and Portable PFS today. The test used high O2 concentration from the gas canister to enable the crew to use the Portable Oxygen Monitor (POM) to test for O2 leakage from the PPFS. The purpose of the troubleshooting was to identify possible sources of a leak within the Portable PFS or associated hardware accessories.

Completed Task List Activities:

  • Cygnus Cargo Ops (ongoing)

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

  • Progress docking ground support
  • Recycle Tank Drain Ground Commanding
  • SSC Reboots
  • EHDC Initialization File Update

Look Ahead Plan

Saturday, 4/25 (GMT 116)

  • No payload activities 


  • IFM Hatch Seal Inspect
  • USOS Shutter Close
  • HAM Radio Powerup 

Sunday, 4/26 (GMT 117)

  • No payload activities 


  • No systems activities 

Monday, 4/27 (GMT 118)

  • MLT2 WLAN setup (JAXA)
  • Space Fibers setup (NASA)


  • T2 Yearly Maintenance
  • EHS Acoustic Monitoring
  • JEM Temp Stow

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

  • NEUROIMMUNITET. Accelerometry, Saliva sample collection, photo/data transfer for pulse oximetry and Pamyat test
  • ISS Crew and ГОГУ (RSA Flight Control Team) weekly conference
  • Regenerative Environmental Control and Life Support System (ECLSS) Urine Processor Assembly (UPA) Brine Filter Changeout
  • JEM Airlock Depressurization and Venting
  • Global Ecosystem Dynamics Investigation (GEDI) Photos
  • Max Cycle Ergometer w/Vibration Isolation & Stabilization (CEVIS) Portable PFS Subject (includes setup/teardown, powerup and conclude)
  • Regenerative Environmental Control and Life Support System (ECLSS) Recycle Tank Drain/Fill & Process
  • ISS HAM Radio Power Down in Service Module
  • Combustion Integrated Rack FOMA Calibration Valve Open/Close
  • Regenerative Environmental Control and Life Support System (RGN) Wastewater Storage Tank Assembly (WSTA) Fills
  • USOS Window Shutter Close
  • ISS HAM Radio Power Down in Columbus
  • Control of the closed state of a window №6,8,9,12,13,14 cover
  • Test coder MPEG-2 check
  • Docking preparation to ТГК 75P
  • 75P docking to SM Aft
  • Activation of recording mode of mpeg2 multicast on SSC
  • TV system controls deactivation, closing Applications and MPEG2 Multicast Video Downlink via OCA