Miniature Exercise Device (MED-2): The MED-2 session planned for today was postponed due to time constraints.

SpaceX-14 Cold Stowage: The crew implemented changes in the cold stowage plan today to support the return of blood samples on the SpX-14 vehicle.

Extravehicular Mobility Unit (EMU) Loop Scrub and Conductivity Test: As part of the preparation activities needed to support the upcoming US EVA Pump Flow Control System (PFCS) Relocate currently planned on May 16th, the crew performed EMU water loop scrubs and tested water samples for conductivity. During the maintenance activities, the crew noted that EMU 3006 was making an unexpected noise. While suit telemetry appeared nominal, and no hardware issues were noted throughout the activities, a recording of the anomalous sound was provided to engineering teams for review.

External TV Camera Group (ETVCG) Assembly: Today the crew completed assembly of an ETVCG for use in the upcoming US EVA on 16-May. This new ETVCG was constructed using the Light Assembly that was recently repaired by the crew on-orbit. Despite multiple attempts, the crew was unable to confirm full engagement of the locking mechanism that holds the External High Definition Camera (EHDC) onto the Color TV Camera (CTVC). Engineering teams are currently reviewing photos and ground test data to determine whether or not additional action is required prior to the EVA.

Zero-Gravity Stowage Rack (ZSR) Photography: In preparation for installation of the Life Sciences Glovebox (LSG) arriving on HTV-7, the crew took specialized photos of the ZSR rack, and surrounding structure, at the JPM1F5 location. Ground specialists will use these photos to verify that on-orbit rack clearances match engineering models using a technique known as Photogrammetry. Fundamentally, photogrammetry is about measurement: the measuring of the imaged object. The process involves taking overlapping photographs of an object and converting them into 2D or 3D digital models. By including objects of known length in the photographs, 3D models can be generated with a known scale. The results of this work will directly affect the verification and development of hardware required to install LSG later this year.

Today’s Planned Activities

All activities are complete unless otherwise noted.



Cargo Transfer from Dragon

Cell Biology Experiment Facility (CBEF) Mouse Habitat Cage Unit Installation for Micro-G and 1G

Extravehicular Mobility Unit (EMU) Cooling Loop Maintenance Scrub Initiation

Correction of lettering on the painted surface of Quick Release Screw Clamps (ЗВБ) No.3 installed on SM Aft – Progress 438 Interface

PROBOY. Connecting Acoustic Signal Converter Unit (БПАС) cable and activation of БПАС

TangoLab-1 Card Cube Replace

PROBOY. Software Update.

Cleaning FGB ЦВ1 Circulation Fan Screens

СОЖ maintenance

Vacuum Cleaning ВД1 and ВД2 air ducts in MRM2

PROFILAKTIKA-2. Preparation for the experiment.

Water Recovery and Management Condensate Pumping Init

PROFILAKTIKA-2.Operator Assistance in Preparation for the Experiment

Portable Fan Assembly Restow and Inspect

In-flight Maintenance (IFM) External Television Camera Group (ETVCG) Gather

Water Recovery and Management Condensate Pumping Term

PROFILAKTIKA-2. Experiment Ops on БД-2 Treadmill (Individual strategy test).

Extravehicular Mobility Unit (EMU) Post Scrub Cooling Loop Water (H2O) Sample

PROFILAKTIKA-2.Closeout Ops.

External Television Camera Group Assist

External Television Camera Group (ETVCG) Assemble

EVA Extravehicular Mobility Unit (EMU) Cooling Loop Scrub Deconfiguration

Preventive Maintenance of FS1 Laptop

ZSR Rack Front Stowage Relocate

BRI Monthly Maintenance Note 6

PROFILAKTIKA-2. Hygiene Procedures

High Definition Video Camera Assemby 2 Activation in High Definition Mode [Aborted]

External Television Camera Group (ETVCG) Light Bulb R&R and Assembly Restow

Probiotics Item Gathering

СТТС Reconfiguration in MRM1

PWS1 booting in safe mode [Aborted]

SEPARATION. ЕДВ-У replacement.

SEPARATION. Activation of the 4th distillation.

IMS Update

HDVCA2 SD setting and PWS1 power off post PWS1 Troubleshooting [Aborted]

Miniature Exercise Device Operations Session

ZSR and JPM1F5 Photos

CONTENT. Experiment Ops

SEPARATION.

Environmental Health System (EHS) – Rad Detector Relocate

PROBOY. RSЕ1 Laptop Ops.

PROBOY. Penetration Simulator Ops.

Extravehicular Mobility Unit (EMU) Conductivity Test

ISS HAM Service Module Pass

SEPARATION. Log-file downlink

SEPARATION. Replacement and ЕДВ-Д Water Sample Collection.

СТТС reconfiguration in MRM1

PROBOY. Copy and Downlink Data

ISS HAM Service Module Pass

HRF ZBook Retrieve

Symbolic Activity (Setup)

TangoLab-1 Card Cube Remove

Cargo transfer to Dragon

ZSR and JPM1F5 Photos Part 3

ZSR Photos Restow

Stow Syringes used in H2O Conductivity Test

Completed Task List Activities

None

Ground Activities

All activities are complete unless otherwise noted.



Battery 3B2 Capacity Test

SPDM Direct Drive Testing

Three-Day Look Ahead:

Friday, 05/04: Dragon Double Cold Bag Repack, Dragon Center Stack Transfer, Dragon Egress and Closeout

Saturday, 05/05: Housekeeping, Dragon Release Operations

Sunday, 05/06: Crew Off-Duty

QUICK ISS Status – Environmental Control Group: