NanoRacks CubeSat Deployer #8 (NRCSD#8) Deployment Operations: The final NRCSD #8 silo was successfully deployed yesterday at 9:15 PM CDT which concludes three consecutive days of deployment operations. Eight silos were deployed during these operations, each containing two CubeSats for a total of 16 Doves. The Dove satellites are a fleet of nanosatellites that enables imagery of the entire changing planet to be taken on a frequent basis, with humanitarian and environmental applications ranging from monitoring deforestation and the ice caps to disaster relief and improving agriculture yields in developing nations. The NRCSD is a commercially operated small satellite deployer from the ISS, maximizing full capabilities of each airlock cycle [of deployments.
Bigelow Expandable Aerospace Module (BEAM) Vestibule Outfitting Status: The crew installed the BEAM bulkhead Inter-Module Ventilation (IMV) valve this morning. The Vacuum Access Jumper was then connected to the Node 3 aft hatch to depressurize the Node 3 aft vestibule to 5 psi and perform an 8 hour leak check which is currently ongoing and will confirm good seals on the newly installed Node 3 aft and BEAM IMV valves.
Biological Rhythms 48 Multi Media Card Exchange: The crew stopped the first 24-hour recording that began yesterday and changed out the Multi Media Card and battery of the Digital Walk Holter ECG before starting the second 24-hour recording. The objective of the Japan Aerospace Exploration Agency (JAXA) Biological Rhythms 48 is to study the effects of long-term microgravity exposure on heart function by analyzing an astronaut’s electrocardiogram for 48 hours.
Auxin Transport Run #3.1: The crew retrieved samples that were installed in the Cell Biology Experiment Unit (CBEF) three days ago for incubation and performed the fixation, sampling and closeout activities to complete the last of a four day Auxin Transport experiment run. The Japan Aerospace Exploration Agency (JAXA) Auxin Transport investigation clarifies the role of auxins in pea and maize (corn) seedlings grown in microgravity, leading to new insight into how gravity, or the lack of gravity, affects plant development. This study may contribute to increasing the efficiency of plant cultivation in plant factories. The data obtained from the second experiment run will provide evidence of spaceflight‐alterations in auxin polar transport and endogenous levels of auxin, resulting in automorphogenesis.
European Modular Cultivation System (EMCS) Pressure Relief Valve Check and Water Pump Tube Installation: The crew began installing six water pump tubes on two Rotor Based Life Support System (RBLSS) modules and conducting a pressure relief check by pushing three relief valve buttons located on EMCS Holding Structure to check that the resistance to pushing action is low and comparable for all three valves. This activity is performed once a year to ensure that valves do not get stuck and to assess their functionality. However, the Express Rack 3 Laptop (ELC 3) lost comm with indications of a hard disk error. A power cycle did not recover the system. The crew performed troubleshooting to remove the laptop battery, reseat the hard drive and reinstall the battery but the boot up sequence carried the crew back to where they had started so the installation was aborted.
Packed Bed Reactor Experiment (PBRE) Lab Video Setup: Following the PBRE hardware setup and installation earlier this week, the crew set up a video camcorder for over-the-shoulder view of the Microgravity Science Glovebox (MSG) high definition (HD) monitor for the ground to view the water separator. The PBRE will be used to study the behavior of gases and liquids when they flow simultaneously through a column filled with fixed porous media. The porous media or “packing” can be made of different shapes and materials and are used widely in chemical engineering as a means to enhance the contact between two immiscible fluid phases (e.g., liquid-gas, water-oil, etc.). Packed columns can serve as reactors, scrubbers, strippers, etc. in systems where efficient interphase contact is desired, both on Earth and in space.
Window Observational Research Facility (WORF) Solid State Power Control Module (SSPCM) Trip Recovery: During the METEOR payload Software Load and Hardware Setup on May 20th, the WORF SSPCM channel 23 tripped when the crew flipped the Payload 3 power switch to supply power to the 28 VDC to 120VAC Inverter upstream of the METEOR hardware. It was subsequently determined that the SSPCM trip limit was set to the 10 Amp setting, while the in-rush current of the inverter requires the trip limit to be set to the 20 Amp setting. Earlier this week the SSPCM trip limit for channel 23 was increased to 20 Amps and power was successfully applied to METEOR. No additional issues have been reported.
Autonomous Mission Operations (AMO): The crew successfully executed the first crew initiated run of the AMO experiment. Using onboard AMO software, the crew completed the autonomous deactivation and activation of an EXPRESS Rack (ER7 at Lab P2). While the ground team was monitoring via telemetry, this activity was completed entirely by crew and onboard software without ground personnel or ground commands. The overall purpose of the AMO investigation is to demonstrate on-board crew autonomy techniques for future deep-space human spaceflight missions. Additionally, this was the first time an ISS payload rack was nominally deactivated, then reactivated by the crew without ground support.
Remote Power Controller Module (RPCM) P12B-A Remove & Replace (R&R): Overnight, ground controllers performed day 2 of the 6 day choreography to proceed with the P12B-A RPCM R&R to restore power to the P1 Lower Outboard Luminaire Heater. Over the course of the evening the team removed a spare RPCM from Cargo Transport Container 5 (CTC-5) and relocated it to the unoccupied P11A-C location on the truss. This evening, the team is continuing operations by relocating the P11A-A RPCM to the currently unoccupied P11A-D location and moving the spare RPCM that is now in the P11A-C location into the P11A-A slot. The RPCM that is currently in the P11A-A location is loaded with the firmware necessary to perform “hot-mate” operations and will eventually be used as the replacement for the current P12B-A RPCM.
During overnight operations, while preparing for an SPDM Arm 1 Joint Operator Commanded Auto Sequence (OCAS), the SPDM safed itself due to an SPDM 1 OTCM Electronics Unit (OEU) status switch interface failure. Operators were able to recover from the event and OTCM-1 was not required for the remainder of the day’s operations. OEU Diagnostics data was collected at the end of the operations and will be reviewed prior to the next time the OTCM-1 grippers are needed on Saturday to open the CTC lid following completion of the R&R.
Node 1 (N1) Vacuum Access Port (VAP) Modification: The crew is currently installing a VAP in Node 1 that will be connected to the Airlock Vent Relief Valve to provide vacuum capability for visiting vehicles berthed to Node 1 Nadir. The Vacuum Access Port Mod Kit consists of a Vacuum Access Port, vacuum hose, and IMV Duct installed in Node 1 and Airlock to support vacuum access through the Airlock Emergency Manual Pressure Equalization Valve (EMPEV). The crew is scheduled to complete the modifications required on the Node 1 side with Airlock modifications scheduled for tomorrow.
Oxygen Generation System (OGS) Water Orbital Replacement Unit (ORU) Flight Support Equipment (FSE) Swap: The crew swapped the water ORU FSE protective frame that contains a new replacement ORU to protect a removed, returning water ORU. The replacement water ORU will be put in an on-orbit cushion for protection until future installation.
OA-6 Trash Loading Status: The crew has completed approximately 44 hours of transfer. There are approximately 2 hours remaining to be completed, however, there is potential for bags to be added to trash loading that could increase time remaining.
Today’s Planned Activities
All activities were completed unless otherwise noted.
- SEISMOPROGNOZ. Data Dump from МКСД Hard Drive (start) r/g 2224
- ARED Platform Partial Fold
- Report on BEAM Analog Gauge Pressure Readings Prior to Pressure Equalization
- BLR48 Measurements (start)
- Pressure Equalization between the ISS and BEAM to Allow for Subsequent IMV Cap Removal
- EMCS Pressure Relief Valve Check
- EMCS. Tubes Installation [Aborted]
- Equipment Gather for Vacuum Access Port Modification
- БРИ Protocols Download from RSS1
- Orthostatic Stability Evaluation with LBNP
- BEAM Bulkhead. Removal of IMV Caps. Valves Installation.
- Orthostatic Stability Evaluation with LBNP (without a computer)
- Stowage Consolidation on USOS
- VIZIR. Setup and Experiment Ops (start) with СКПИ Hardware r/g 2418
- OTKLIK. Hardware Monitoring / r/g 1588
- Search of Glisser-M #6 Camcorder Battery and its Charging
- Node 3 Aft Vestibule Depress
- SEISMOPROGNOZ. Data dump from МКСД Hard Drive (end) and archiving (start)
- Personal CO2 Data Collection [Deferred]
- BIMS. Assistance during the Experiment Experiment Ops / r/g 2415
- BIMS. Experiment Ops r/g 2415
- ARED Unfold to Nominal Position
- Cygnus Cargo Transfer
- JEM. Kits Transfer
- BIMS. Experiment Ops r/g 2414
- BIMS. Assistance during the Experiment / r/g 2414
- Checking for Presence of the БЗУ Onboard Memory Device in the Local Network r/g 2416
- External Wireless Communication (EWC) Cable Configuration
- TM750. Battery Charging
- PBRE. Camcorder Setup
- Food Frequency Questionnaire (FFQ)
- Dust Filters Replacement. [В1] and [В2] Fan Screens Cleaning in MRM2
- AUT. Hardware Setup
- Cygnus Cargo Transfer
- AUT. MEU-B (2) Detachment
- AUT. Samples Fixation
- Inspection and Photography of the Internal Surfaces of SM Air Ducts r/g 2424
- VIZIR. Closeout Ops with СКПИ Hardware r/g 2418
- Fan Screens Cleaning in MRM1 (Group B)
- AUT. MEU-B (2) Detachment
- AUT. Samples Fixation
- Ice Brick Installation into MELFI
- AUT. Samples Insertion into MELFI
- AUT. Closeout Operations
- Cygnus. Cargo Transfer Conference
- AMO2. ER7 Deactivation
- СОЖ Maintenance
- AMO2. Photography of Operations
- AMO2. Status Check
- Node 1 Vacuum Access Port Modification
- Ice Brick Installation into MELFI
- Dust Filters Replacement and MRM1 Gas-Liquid Heat Exchanger (ГЖТ) Cleaning
- Water Resource Management Condensate Tank Offload (start)
- Sprint Exercise. At Crew’s Discretion
- IMS Delta File Prep
- Water Resource Management Condensate Tank Offload (end)
- VIZIR. Experiment Ops with СКПФУ Hardware r/g 2419
- FSE. ORU R&R
- Food Frequency Questionnaire (FFQ)
- AMO2. ER7 Activation
- CONTENT. Experiment Ops / r/g 2409
- AMO2. Status Check
- CSA. Generic Frozen Blood Collection Setup
- Node 3 Aft Vestibule Repress and Leak Check. ISA/VAJ Teardown and Stow
Completed Task List Items
- N2 AC inverter PiP audit
Ground Activities
All activities were completed unless otherwise noted.
- BEAM vestibule outfitting
- RPCM R&R
- Nominal ground commanding
Three-Day Look Ahead:
Friday, 06/03: NORS tank swap, MSL sample exchange, CSA centrifuge setup and blood collect
Saturday, 06/04: Crew off duty, housekeeping
Sunday, 06/05: Crew off duty
QUICK ISS Status – Environmental Control Group:
| Component | Status |
| Elektron | On |
| Vozdukh | Manual |
| [СКВ] 1 – SM Air Conditioner System (“SKV1”) | On |
| [СКВ] 2 – SM Air Conditioner System (“SKV2”) | Off |
| Carbon Dioxide Removal Assembly (CDRA) Lab | Standby |
| Carbon Dioxide Removal Assembly (CDRA) Node 3 | Operate |
| Major Constituent Analyzer (MCA) Lab | Idle |
| Major Constituent Analyzer (MCA) Node 3 | Operate |
| Oxygen Generation Assembly (OGA) | Process |
| Urine Processing Assembly (UPA) | Standby |
| Trace Contaminant Control System (TCCS) Lab | Off |
| Trace Contaminant Control System (TCCS) Node 3 | Full Up |