Group Combustion Troubleshooting: FE-5 resumed the troubleshooting on the Group Combustion Experiment Module (GCEM). The crew removed the GCEM Combustion Chamber Element (CCE) from the Multi-Purpose Small Payload Rack (MSPR) rack and installed it on the Work Bench to verify the air supply line Quick Disconnect (QD) connections. FE-5 then reinstalled the Combustion Chamber and performed leak checks with the GCEM installed in the MSPR. Ground teams are reviewing data and high-resolution images prior to proceeding with further troubleshooting steps. The Group Combustion investigation tests a theory that fuel sprays change from partial to group combustion as flames spread across a cloud of droplets. In the Multi-purpose Small Payload Rack in the Kibo module, droplets of decane, a component of gasoline or kerosene, are arranged randomly on thin-fiber lattice points, and the flame and droplet positions and temperature distribution are measured as the flame spreads. Microgravity blocks convection, which on Earth would quickly disperse the droplets and combustion products before such measurements could be made. USOS Crew Off Duty: FE-5 and FE-6 have a reduced work day in preparation for a busy weekend. Soyuz Operations are continuing nominally to support a 48S docking to the MRM2 Zenith port on Friday 21-October at 9:59 GMT. Cygnus operations remain on track for capture and berthing to the ISS on Sunday 23-October. Cygnus is carrying more than 2300 kg of supplies, crew provisions, and science experiments to the ISS. Cygnus Unberth is currently planned for 18-November. Today’s Planned Activities All activities were completed unless otherwise noted. ISS Crew and ГОГУ (RSA Flight Control Team) weekly conference Hardware prepack for return and disposal on Soyuz 731 СОЖ maintenance CARDIOVECTOR. Experiment Ops. Multi-purpose Small Payload Rack (MSPR) Combustion Chamber (CC) Retrieval Measuring Partial CO Pressure at RS Central Post using US portable CSA-CP device Verification of ИП-1 Flow Sensor Position LBNP Training (PRELIMINARY) Combustion Chamber (CC) Air Supply Line Check Combustion Chamber (CC) Top Plate Attachment HRF Generic Frozen Blood Collection Setup Vozdukh Atmosphere Purification System switchover from mode 3 to mode 4. Microbial Capture Device (MCD) and Coliform Water Sample Analysis 44 +/- 4 hours post processing Multi-purpose Small Payload Rack (MSPR) Combustion Chamber (CC) Installation Air Heater Fan (БВН) Screen Cleaning in Soyuz 731 Multi-purpose Small Payload Rack (MSPR) Combustion Chamber (CC) Leak Check 1 Trouble Shoot Food Frequency Questionnaire (FFQ) CALCIUM. Experiment Session 10 Marrow Breath And Ambient Air Sample Setup – Subject Multi-purpose Small Payload Rack (MSPR) Combustion Chamber (CC) Leak Check 2 Trouble Shoot ISS Crew departure preparation КОНТЕНТ. Experiment Run Completed Task List Items PMM Stowage Consolidation and Organization Ground Activities All activities were completed unless otherwise noted. Nominal Ground Commanding N2 Distribution System Leak Check post MSPR operations Three-Day Look Ahead: Friday, 10/21: 48S Docking, Airlock prep for Airway Monitoring Saturday, 10/22: Cygnus Capture OBT, Emergency Roles/Responsibilities Review, Crew Adaptation Sunday, 10/23: Cygnus Approach and Capture, Vestibule Outfitting QUICK ISS Status – Environmental Control Group: Component Status Elektron On Vozdukh Manual [СКВ] 1 – SM Air Conditioner System (“SKV1”) Off [СКВ] 2 – SM Air Conditioner System (“SKV2”) On Carbon Dioxide Removal Assembly (CDRA) Lab Standby Carbon Dioxide Removal Assembly (CDRA) Node 3 Operate Major Constituent Analyzer (MCA) Lab Operate Major Constituent Analyzer (MCA) Node 3 Idle Oxygen Generation Assembly (OGA) Process Urine Processing Assembly (UPA) Shutdown Trace Contaminant Control System (TCCS) Lab Off Trace Contaminant Control System (TCCS) Node 3 Full Up
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