Out-of-Spec ISS Cabin Pressure Decrease: Following the initial leak repair yesterday, the ISS was repressurized to nominal pressure using Progress assets. Today, the Russian crew performed additional activities for the leak repair. There was still a small leak path which the crew sealed as they continued with the repair. An additional level of repair will …
Out-of-Spec ISS Cabin Pressure Decrease: Last night, the ISS cabin pressure started dropping at the rate of one mmHg/hr. This morning the crew performed leak isolation steps via a series of hatch closures and determined the leak was in the Soyuz 55S habitation module [БО]; a pressure check of the 55S descent module was nominal. Further …
Biomolecule Extraction and Sequencing Technology (BEST): The crew prepared BEST RNA samples and began 48 hour sequencing on the Biomolecule Sequencer. The BEST investigation studies the use of sequencing for identification of unknown microbial organisms living on the ISS, and how humans, plants and microbes adapt to living on the ISS. SpaceTex-2 and Metabolic Space: …
ExPRESS Rack (ER) 5 Payload Isolation: On August 23rd, the ER5 Subsystem Valve was removed and replaced (R&R’d) after a Japanese Experiment Module (JEM) Moderate Temperature Loop (MTL) leak had been isolated to ER5. Earlier today, the crew disconnected the supply and return lines to the Space Automated Bioproduct Laboratory (SABL) and Plant Habitat facilities …
Moon Imagery: Today the crew took photographs of the full Moon and downlinked them for evaluation on the ground. If a spacecraft loses communication with the ground or with NASA’s Deep Space Network, its crew must navigate just as ancient mariners did, using the moon and stars. The Moon Imagery investigation collects pictures of the …
Treadmill 2 (T2) Maintenance: The crew performed both the 6-month and yearly T2 preventative inspections and maintenance actions. During these tasks, the crew inspected the treadbelt slats and screws, cleaned the treadmill drive shaft, greased forward and rear axles, vacuumed inside the rack and around the treadmill, and inspected the bungee shackle key mount witness marks. An …
69 Progress (69P) Undock: Last night, 69P undocked from the Service Module (SM) Aft port at 9:16 PM CDT. This Progress vehicle will remain on-orbit conduct non-ISS free-flight experiments until 29-August. The deorbit burn is scheduled for Wednesday, August 29 at 8:24 PM CDT followed by atmospheric entry and destruction. Center for the Advancement of Science …
69 Progress (69P) Undock: This evening, 69P is scheduled to undock from the Service Module (SM) Aft port at 9:16 PM CDT. This Progress vehicle will conduct Non-ISS free-flight experiments from August 23 to August 30. The deorbit burn is scheduled for Wednesday, August 29 at 8:24 PM CDT followed by atmospheric entry and destruction. Atomization: …
BioServe Protein Crystallography (BPC)-1: The crew performed BioServe Protein Crystallography Microscope operations today. They removed the BioServe Protein Crystallography samples from the Space Automated Bioproduct Laboratory (SABL), made observations, and photographed the sample wells using the microscope, and returned the samples to the SABL. BPC-1 seeks to demonstrate the feasibility of conducting protein crystal growth …
Waste Hygiene Compartment (WHC) Blower Circuit Breaker Trip: This morning the circuit breaker to the WHC blower tripped. After the crew ran the nominal malfunction procedure, the breaker again tripped prompting ground specialists to declare the hardware failed. The crew successfully removed and replaced the failed blower and functional tests were successful; WHC is now …
