Burning and Suppression of Solids (BASS)-II: Kopra completed flame tests for the BASS-II investigation. BASS-II examines the burning and extinction characteristics of a wide variety of fuel samples in microgravity. The results of the BASS-II experiment will be used in the development of strategies for flammability screening of materials to be used in spacecraft as well as to provide valuable data on solid fuel burning behavior in microgravity. BASS-II results contribute to the combustion computational models used in the design of fire detection and suppression systems in microgravity and on Earth.
Twins Study: In support of the Twins Study, Kelly continued his week-long Return minus 14 day daily saliva collections. This investigation is an integrated compilation of ten different studies led by multiple investigators. The studies take advantage of a unique opportunity to look at the effects of space travel on identical twins, with one of them experiencing space travel for a year while the other remains earth-bound for that same year. The study looks at changes in the human body that are important in the fields of genetics, psychology, physiology, microbiology, and immunology.
Space Headaches: Peake completed his Weekly Space Headaches questionnaire today. Headaches can be a common complaint during spaceflight. This experiment will provide information that may help in the development of methods to alleviate associated symptoms and improvement in the well-being and performance of crew members in space.
Soyuz 44 (44S) Nominal Descent Drill #2: The 44S Crew (Kelly, Kornienko, and Volkov) participated in a nominal Soyuz Decent Drill. As part of the training they reviewed preliminary undocking and descent data and worked through the descent timeline from Soyuz activation through post-landing activities. The 44S crew is scheduled to return to Earth next Tuesday, 01 March.
Japanese Experiment Module (JEM) Stowage Frame Installation: Peake initiated the assembly and installation of the JEM Stowage Frame. Once fully installed, the frame will increase JEM stowage capability by 12 Cargo Transfer Bag Equivalents (CTBE).
ВД2 anomaly: Late in the crew day, ВД2 experienced a failure in the vibration isolation system. This crew has experience with this repair, as an identical failure on the other side of ВД2 occurred recently, and spares are available onboard. Russian hardware specialists ВД2 to be recovered over the weekend.
Urine Processing Assembly (UPA): The UPA was transitioned from shutdown to standby today, in order to prepare for purge and recovery of the UPA. Procedures are being developed to purge a clogged hose next week, and start the system after that purge.
Remote Power Controller Module (RPCM) AL1A4A-B RPC-14 Trip: This morning, RPCM AL1A4A-B RPC-14 tripped open, and was verified to be a true overcurrent event. This RPC powers shell heaters on the joint airlock. Redundant heaters are operational.
Today’s Planned Activities
All activities were completed unless otherwise noted.
- Closure of window shutters 6,8,9,12,13,14 / r/g 6965
- HRF – Sample Collection and Prep for Stowage Insertion
- T2 Treadmill Photo/TV. Reminder
- TWIN – Sample Collection
- NEIROIMMUNITET. Saliva Test / r/g 1535
- CORRECTSIYA. Closeout Ops / r/g 1535
- HRF – Sample Insertion into MELFI
- T2 Treadmill Photo/TV. Reminder
- Closing USOS Window Shutters
- Soyuz 718 СУД No.2 test in preparation for descent Orbital Flight 14 + r/g 1544
- Vacuum Cleaning of ВД1 and ВД2 air ducts in MRM2
- EVA Helmet Interchangeable Portable (EHIP) Batteries – Restow
- P/TV – Hardware Removal
- Soyuz 718 АСУ Activation (MRM2) / Ascent and Descent
- IMS Tagup
- Soyuz 718 Descent OBT r/g 1545, 1543, 1543
- PBA Relocation
- EVA – Airlock Transfers
- Camcorder setup to capture T2 exercise
- Download Pille Dosimeter Readings / r/g 1542
- JAXA Stowage Frame Installation Part 1
- BIODEGRADATSIYA. Sample collection from structure surfaces and photography r/g 1546
- Soyuz 718 (MRM2) Stowage Ops / r/g 1444
- MATRYOSHKA-R. Removing ИД-3МКС Assemblies from Protective Curtain P/L / r/g 1540
- WRS Maintenance
- In Flight Maintenance (IFM) – Waste and Hygiene Compartment (WHC) – Full Fill
- HAM radio session from Columbus
- Food Frequency Questionnaire
- HRF – Urine Collection Hardware Setup
- In Flight Maintenance (IFM) – Waste and Hygiene Compartment (WHC) – Full Fill
- INTERACTION-2. Experiment Ops / r/g 1541, 1541
- Soyuz 718 Samsung tablet charge – initiate / Video & Audio
- WRS Maintenance
- Crew Departure Prep
- SHD – Questionnaire
- Formaldehyde Monitoring Kit (FMK) Stow Operations
- Progress 429 (Aft) Stowage for Disposal and IMS Ops / r/g 1484
- Photo/TV Camcorder Setup Verification
- Charging Soyuz 718 Samsung tablet – termination /Video & Audio
- СОЖ Maintenance
- IMS Delta File Prep
- Stow Video Equipment to capture T2 Exercise
Completed Task List Items
- None
Ground Activities
All activities were completed unless otherwise noted.
- Nominal System Commanding
Three-Day Look Ahead:
Saturday, 02/27: Crew off duty, weekly cleaning
Sunday, 02/28: Crew off duty
Monday, 02/29: CQ Cleaning, Sprint VO2, Fine Motor Skills, JEM Stowage Frame Install Part 2, Crew Departure Prep, Emergency Roles and Responsibilities Review, Change of Command Ceremony
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 | 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 |