ISS Daily Summary Report – 6/23/2021


Plasma Krystall-4 (PK-4): The crew executed two Run 2 operations by catching clouds of particles inside the PK-4 chamber using the PK-4 Human Computer Interface (HCI) software on the European Physiology Module (EPM) laptop. PK-4 is a scientific collaboration between ESA and Roscosmos performing research in the field of “Complex Plasmas”. Complex Plasmas are low temperature gaseous mixtures composed of ionized gas, neutral gas, and micron-sized particles. The micro-particles become highly charged in the plasma and interact strongly with each other, which can lead to a self-organized structure of the micro-particles, so-called plasma crystals. Experiments in the facility aim to study transport properties, thermodynamics, kinetics and statistical physics, non-linear waves, and instabilities in Complex Plasmas.


Robotics On-board Trainer (ROBoT) On-board Training (OBT): The crew completed a ROBoT OBT session in preparation for the Space Station Remote Manipulator System (SSRMS) support of the ISS Roll-Out Solar Array (IROSA) 4B Install Extravehicular Activity (EVA). The OBT involved both the Intravehicular (IV) robotic operators as well as the Extravehicular (EV) crew in order to practice EVA communication and build team awareness of the robotics related constraints.

EVA Preparations: The crew completed several activities in preparation for the IROSA 4B Install EVA. The crew printed Extravehicular Mobility Unit (EMU) cuff checklists, terminated Metal Oxide (METOX) cartridge regenerations, and replaced the Display and Control Module (DCM) O-Ring seal on EMU 3015. Finally, the crew reviewed EVA procedures and participated in a conference with the ground. The IROSA 4B Install EVA is planned for Friday, June 25th.

Completed Task List Activities:

  • WHC [KTO] and Solid Waste Receptacle R&R
  • EVA GoPro Battery Charging

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

  • JEMRMS Maneuver & Deactivation
  • ROBoT OBT Support
  • EVA Conference
  • Crew-2 Dragon Quiescent Checkout
  • KCU-2 Video Streaming to SSC Checkout
  • SDMS Activation for 77P Reboost (In Work)

Look Ahead Plan

Thursday, June 24 (GMT 175)

  • Food Acceptability (NASA)
  • A-HoSS (A-HERA) Powerup (NASA)
  • Standard Measures Pre-sleep (NASA)
  • AC Touch (NASA)
  • OBIS Bag1 (17-20) Initiation and Activate (NASA)
  • AWP HRF1 Setup (NASA)
  • PK-4 HD Exchange (Joint)
  • Slingshot Control Box Install (NASA)


  • Equipment Lock Preparations
  • EVA Tool Configurations & Audit
  • ROBO Procedure Review & Conference
  • EVA Procedure Review & Conference
  • EMU HECA Install

Friday, June 25 (GMT 176)

  • COSMIC Confocal Cable Reconnect and Check (JAXA)
  • OBiS Bag2 (17-20) Initiation (NASA)
  • Standard Measures Post-sleep (NASA)
  • SAMS Wireless Sensor for KERMIT Support (NASA)
  • AC Touch (NASA)
  • PK-4 Run 4 (Joint)


  • IROSA 4B Install EVA
  • SpX-22 Cargo Operations

Saturday, June 26 (GMT 177)

  • APEX-07 Harvest (NASA)
  • OBiS Bag3 (17-20) Initiation (NASA)
  • PK-4 HD Pack and Closeout (Joint)
  • ISS HAM Pass (NASA)


  • EVA Debrief
  • EVA Recovery Activities
  • SpX-22 Cargo Operations

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

  • EMU Cuff Checklist Print
  • EVA Procedures Print
  • Robotics Procedure Review
  • OBT EVA ROBoT Session
  • EMU DCM O-Ring Seal Remove and Replace
  • EVA Procedure Conference
  • METOX Regeneration Termination
  • USOS Window Shutter Close (In Work)