Energy Operations: The crew completed the 8th day of a 10 day European Space Agency (ESA) Energy experiment run by collecting ISS tap water samples taken from the Potable Water Dispenser (PWD) and body samples. This investigation will help determine the crewmembers’ energy requirements for long-term space flight. Energy also measures adaptations in the components of total energy expenditure of crewmembers so that an equation to determine energy requirements during space flight may be derived. Such knowledge of is of a great importance to ensure health, good performance and the overall success of a mission, and also ensures adequate exercise load and cargo allotments for food during space flight.
Multi-purpose End-To-End Robotic Operations Network (METERON) Supervisory Control Test: Using the Rover Control Software, the crew successfully controlled the Bridget Rover located in London, England from a computer onboard the ISS. The ESA investigation supports the implementation of a space internet, examines the benefits of controlling surface robots in real time from an orbiting spacecraft, and investigates how best to explore a planet through a partnership between humans and robots. This is of importance in planning future human exploration missions to Mars and feeds into Earth-based technologies such as handling radioactive material.
Wet Lab Ribonucleic Acid (RNA) SmartCycler Session 3: The crew completed the third of four Wet Lab RNA SmartCycler sessions by conducting the validation operations and processing a cell sample to extract the RNA. Following the RNA extraction, the samples will be placed into the SmartCycler for data collection. The Wet Lab RNA SmartCycler is a research platform for conducting real-time quantitative gene expression analysis aboard the ISS. The system enables spaceflight genomic studies involving a wide variety of biospecimen types in the unique microgravity environment of space.
Cell Mechanosensing- 3(CMS-3) Closeout: The crew completed closeout activities by removing the memory card and disassembling Microscope components from the Multi-purpose Small Payload Rack Work Volume (MSPR WV). The CMS-3 microscope observations were completed last week.
Habitability Human Factors Directed Observations: The crew recorded and submitted a walk-through video documenting observations of an area or activity providing insight related to human factors and habitability. The Habitability investigation collects observations about the relationship between crew members and their environment on the ISS. Observations can help spacecraft designers understand how much habitable volume is required, and whether a mission’s duration impacts how much space crew members need.
Mobile Servicing System (MSS) Operations/HTV-6 Get-ahead Tasks: Yesterday evening Robotics Ground Controllers successfully completed all 1A battery bolt operations. Additional attempts will be made this evening to release Battery 3A1-2 bolt with a higher torque as recommended by engineering teams.
Intermodule Ventilation (IMV) Reconfiguration: To maintain ppCO2 below 3.0 mmHG using a single CDRA (N3 or Lab) without having to also use Amine Swingbed, 2nd CDRA or LiOH canisters, the crew completed reconfiguration of Node 1 IMV to set up for the planned IMV split with the Russian segment. The actual ventilation split will be performed on Monday following crew wake via ground commanding. Monitoring of ppC02 will take place on each segment to find the stabilization levels on both USOS and Russian segments. If required, a backout of the ventilation split can be accomplished by commanding to the IMV fan and valve with no crew intervention required. Teams will meet after Monday’s split activities to review initial results.
Common Communications for Visiting Vehicles (C2V2) Radio Frequency (RF) Checkout Day 5: C2V2-A RF Checkout test F and C2V2 B test A were successfully completed with all objectives met. In today’s test, C2V2-A successfully sent GPS Auxiliary Data (GAD), Broadcast Auxiliary Data (BAD), Audio, sent a command on the forward link and received cyclic telemetry, encrypted Pass Thru telemetry, and Audio on the return link. This pass also included a successful voice check on Space to Ground 2 (S/G2) between the Electronic Systems Test Laboratory (ESTL) and the crew. In test A, C2V2-B successfully sent FILL data to ESTL on the forward link.
LS1 Server Status: Yesterday, the LS-1 server shell was replaced using the previous hard drive resulting in file system corruption. The old drive was re-installed in the old shell and displayed evidence of frozen applications. A replacement shell and drive were installed and a manual restore was performed. The LS1 server is back on the domain and performing nominally.
Treadmill 2 (T2) Inspection: The crew inspected the two bottom Snubbers, re-tapeed the Y-axis isolators, checked all four Snubber Arms for signs of free play and inspected the Bungee Shackle Key Mount witness marks. This is routine monthly maintenance.
Dragon Cargo Transfer Operations: The crew has completed 31:45 hours of cargo transfer. Approximately 17 hours remain to be completed.
Today’s Planned Activities
All activities were completed unless otherwise noted.
- HRF Sample cold stowage insert
- HRF Blood Collection Operator
- HRF Refrigerated Centrifuge Configuration
- ENERGY Diet Log of Breakfast
- Daily Planning Conference (S-band)
- ISS crew and ГОГУ (RSA Flight Control Management Team) weekly conference / r/g 2077
- HRF Blood sample removal in preparation for cold stowage insertion
- HRF – MELFI Sample Insertion
- DUBRAVA. Observation and Photography using [ВСС] hardware. r/g 2103
- SmartCycler (SCYC) Operation with Samples
- SmartCycler (SCYC) Sample Transfer
- ISS-HAM Radio Session with students
- VIZIR. Experiment setup and start r/g 2102
- HRF Closeout Ops
- ENERGY – Water Sampling
- Replacement of FGB Dust Collector ПС1, ПС2 Filters
- ENERGY Urine Sample Collection
- DRAGON Transfers
- CMS3 Experiment Ops
- Greetings Video Footage / r/g 2101
- IMS Tagup
- SmartCycler (SCYC) Session 2 Overview
- Camcorder setup to capture БД-2 exercise / r/g 2071
- Download Pille Dosimeter Readings / r/g 2094
- SM Ventilation Subsystem Preventive Maintenance
- SmartCycler (SCYC) Experiment Ops
- On MCC Go Testing БД-2 Treadmill. БД-2 Exercise, Day 3
- Dragon Cargo Operations Conference
- Removal of Video Equipment Used to capture БД-2 Exercise and Downlink the file / r/g 2071
- IMV Reconfiguration
- SmartCycler (SCYC) Hardware Ops
- SmartCycler (SCYC) Video downlink
- MSPR ELT CARD memory card installation.
- Laser Eye Protection Disk Removal from Cupola windows Part 3
- C2V2 Voice Check
- VIZIR. СКПИ Closeout Ops r/g 2102
- ENERGY Diet Log of Lunch
- SHD Weekly Questionnaire
- METERON Laptop Prep
- METERON SUPERVISORY CONTROL Ops
- ALGOMETRIA. Experiment Ops / r/g 1808
- Rodent Research (RR) Camcorder Setup
- METERON SUPERVISORY CONTROL Ops
- Food Frequency Questionnaire
- BD-S/U Bone Densitometer Setup and Calibration
- Searching for P/L data storage devices (6) in Soyuz 720 / r/g 2092
- Replacement of Condensate Collector (СБК) Install СБК No.132 П.12
- HABIT Conference Ops
- Ammonia Chip Replacement
- Monthly Inspection of T2 Treadmill System
- VIZIR. Experiment Ops. r/g 2104
- IMS Delta File Prep
- METERON SUPERVISORY CONTROL Ops
- Installation of Personal CO2 Monitor iPad Application
- SmartCycler (SCYC) Experiment Session Setup
- СОЖ Maintenance
- Collecting СО2 Samples in SM and Airlock
- EXPRESS Rack 2 Laptop Battery Swap
- EXPRESS Rack 8 Laptop Replacement
- IDENTIFICATION. Copy ИМУ-Ц micro-accelerometer data to laptop / r/g 1589
- HRF Hardware Setup
- IMS Conference
- Food Frequency Questionnaire
- HMS Defibrillator Inspection
- ENERGY Diet Log of Lunch
Completed Task List Items
- None
Ground Activities
All activities were completed unless otherwise noted.
- 3A Battery bolt ops
- C2V2 checkout
- Nominal ground commanding
Three-Day Look Ahead:
Saturday, 04/30: Crew off duty; housekeeping
Sunday, 05/01: Crew off duty
Monday, 05/02: PGS3 sample fix, Smartcycler Session 4, RR CASIS setup, Nano Racks Module 51 status, SS1 1B pack/stow for return on SpX-8
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 |