Resist Tubule: Yesterday, Commander (CDR) Swanson removed the Resist Tubule samples from the +2 Celsius Minus Eighty Degree Celsius Laboratory Freezer for ISS (MELFI), inserted the samples into Measurement Experiment Unit B and attached the unit inside the Cell Biology Experiment Facility (CBEF) micro-gravity Incubator Unit (IU). Today, Swanson inserted more samples from the MELFI into the CBEF 1-gravity IU. Resist Tubule clarifies the mechanisms of gravity resistance. Gravity resistance is a principal gravity response in plants, and plays an important role in the transition of plant ancestors from an aquatic environment to a terrestrial environment (about 450 million years ago), and in the consequent establishment of land plants. This present study clarifies the mechanisms of gravity resistance, in particular the processes from signal transformation and transduction, to response.
Radi-N2 Neutron Field Study (Radi-N2): Yesterday, Swanson retrieved eight bubble detectors around the ISS for the Radi-N2 experiment and turned them over to FE-2 Artemyev for analysis in the bubble reader. The objective of this investigation is to better characterize the ISS neutron environment and define the risk posed to the crewmembers’ health and provide the data necessary to develop advanced protective measures for future space flight.
Onboard Training (OBT) Dragon Debrief Conference: Following the successful unberth of SpX-3 last Sunday, today Swanson conducted a Dragon release/departure debrief with ground teams.
Oxygen Generation System (OGS) Hydrogen Sensor Remove & Replace (R&R): Today Swanson replaced the OGS Hydrogen Sensor that had reached end of lifetime.
Potential Onboard Combustion Event: Over the weekend, the crew in the US segment reported an unusual metallic odor, strongest in Node 3. The crew took Compound Specific Analyzer-Combustible Products (CSA-CP) readings which were all nominal. Shortly thereafter, a Smoke Detector (SD) annunciated a fire in the US Lab. The crew and ground executed emergency response steps, and again CSA-CP readings were nominal. The crew found a small piece of partially-charred blue tape floating in the US Lab. Photos were downlinked for review on the ground. The specific source of this tape and potential combustion sources are under investigation.
Mobile Servicing System (MSS) Operations: Today Robotics Ground Controllers performed a triple walkoff of the Space Station Remote Manipulator System (SSRMS). The walkoff was from Node 2 to the Lab Power Data Grapple Fixture (PDGF), then to MBS PDGF1 and finally to the Mobile Base System (MBS) PDGF3. The walkoff positions the SSRMS to support the Camera Light Pan Tilt Assembly (CLPA) R&R scheduled to begin this Friday.
Today’s Planned Tasks
- RSS1,2 Reboot / r/g 1009 [Complete]
- Laptop RS1(2) Reboot / Onboard Computer System [Complete]
- SM ПСС (Caution & Warning Panel) Test [Complete]
- Daily Planning Conference (S-band) [Complete]
- СМОК Replacement between СКВ2 БТА Heat Exchanger-Evaporator and НОК2. r/g 5664 [Complete]
- СТТС Configuration for MRM2 / SM Communications System [РТК], [Complete]
- Removal/Installation of MRM2 Terminal Computing Unit [ТВУ]. r/g 5679 [Complete]
- WRM Condensate Pumping Start [Complete]
- RST. Container Retrieval from MELFI [Complete]
- RST. MELFI Sample Insertion [Complete]
- WRM Condensate Pumping Terminate [Complete]
- Replace Condensate Removal Lines from НОК1 to НОК2. r/g 5664 [Complete]
- MRM2 Terminal Computing Unit 1(ТВУ) Firmware Upgrade r/g 5679 [Complete]
- Monitoring MRM2 ТВУ1 Firmware Upgrade in Computer Control Inhibited [ЗРП] Mode r/g 5679 [Complete]
- VIRTUAL. Experiment Ops r/g 5285 [Complete]
- MRM2 Terminal Computing Unit 1(Тву) Firmware Upgrade r/g 5679 [Complete]
- СОЖ Maintenance [Complete]
- Monitoring MRM2 ТВУ2 Firmware Upgrade in Computer Control Inhibited r/g 5679 [Complete]
- MELF3 – Insert Ice Bricks [Complete]
- Test 1 of PCE, PCE antenna feeder (АФУ), ATV control panel commands. [Complete]
- Closeout of Laptop Connection Setup after MRM2 ТВУ2 Firmware Upgade.r/g 5679 [Complete]
- MRM2 Comm Reconfig for Nominal Ops / Communications System [РТК], [Complete]
- Replacement of Condensate Removal Lines from КР1 to СК1. r/g 5664 [Complete]
- OBT – Dragon Ops Conference [Complete]
- Assembly of БРП-М based on No. 011013 r/g 5663 [Complete]
- PAO Hardware Setup [Complete]
- Unstow Oxygen Generation Assembly (OGA) Hydrogen Sensor [Complete]
- Crew Prep For PAO [Complete]
- PAO Event [Complete]
- OGA Hydrogen Sensor R&R [Complete]
- VEG – Daily Plant Check [Complete]
- Start EMU METOX Regeneration [Complete]
- OGA Hydrogen Sensor R&R [Complete]
- Restow Oxygen Generation Assembly (OGA) Hydrogen Sensor [Complete]
Task List
- ARED Cylinder Evac
- CTB 1048 relocate [Complete]
- IMS edit
- WHC EDV-U R&R
- Roscosmos Report
- Ekon Photo
- IFM-WHC UR/IF R&R
- 39S CMS pre-gather
- 3DA1-Cam-Ops
- ARED Dashpot inspect
- CEVIS Isolator MOD
- EMU 3005 Photos
- EMU LLB Auto-Init
- EMU LLB SSC Relocate
- EMU LLB SSC Return
- EVA ORU Bag Inspection
- IFM MOOT restow
- IFM NOD1OS2 LHA R&R
- IFM NOD1PD2 LHA R&R
- KTO EDV audit
- PEPS Inspect
- KTO EDV Audit
- No-skid tape audit
- NOD3 PEPS assessment
- P/TV Hardware questions
- POSSUM PL Photo
- Viable Crew OBT
- Viable PL Photo
- Viable PL Touch
- WMRS MRF Remove
Ground
- Nominal commanding
- Triple walkoff of SSRMS from Node2 to Lab PDGF to MBS PDGF1 to MBS PDGF3
Three-Day Look Ahead:
- Wednesday, 05/21: ACE sample mix, Veg-01 water refill, MELFI Ice brick install
- Thursday, 05/22: MSL SCA Exchange, Resist Tubule Prep, MELFI Ice brick install
- Friday, 05/23: Crew half duty, Sprint BP/ECG, Resist Tubule samples, move CLPA from SSRMS boom to MBS mast
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 | Override |
| Carbon Dioxide Removal Assembly (CDRA) Node 3 | Operate |
| Major Constituent Analyzer (MCA) Lab | Stop |
| Major Constituent Analyzer (MCA) Node 3 | Operate |
| Oxygen Generation Assembly (OGA) | Process |
| Urine Processing Assembly (UPA) | Norm |
| Trace Contaminant Control System (TCCS) Lab | Off |
| Trace Contaminant Control System (TCCS) Node 3 | Full up |