SpaceX Capture/Berthing (SpX-20): Today, the ISS crew completed robotic capture of the SpX-20 Dragon at 10:26 am CT using the Space Station Remote Manipulator System (SSRMS). This was followed by berthing to the Node 2 Nadir port. Next, the ISS crew performed a Node 2 vestibule pressurization and leak check and installed the power data jumper cables for Dragon activation. Additionally, the crew ingressed the Dragon vehicle one day earlier than planned. The vehicle delivered 4300 kilograms of cargo to the ISS.

Payloads

Double Cold Bag (DCB) Unpack Review: The crew reviewed procedures in preparation for transfer and unpack of one -32 deg C DCB and two +4 deg C DCBs. The DCBs are passive (non-powered) bags which are used to maintain temperatures at acceptable levels during the vehicle ascent or descent.

JAXA/Mouse Mission-5 Prep: The crew reviewed procedures and prepared the hardware in advance of the transfer of the mice from SpX-20 to ISS. The purpose of this mission is to analyze any alterations of the gene expression patterns in several organs and the effects on the germ-cell development of mice exposed to a long-term space environment.

STaARS Bioscience 9: As part of the continuing investigation, the crew performed insertion # 4 into a Box Module within MELFI (Minus Eighty-degree Freezer for ISS). Tapping Microgravity to Enhance Biofuel Production (STaARS BioScience-9) aims to identify novel biological mechanisms using genetically modified Escherichia coli (E. coli) to improve the bio-production of isobutene to an extent that economically competes with petrochemical production processes. Isobutene is a key precursor for numerous chemicals and products including butyl rubber, terephthalic acid, and a gasoline performance additive that improves combustion, reduces emissions and prevents engine knock.

Standard Measures: The crew performed the periodic saliva collection as part of the on-going Standard Measures investigation. The aim of the SM investigation is to ensure consistent capture of an optimized, minimal set of measures from crewmembers until the end of the ISS Program in order to characterize the adaptive responses to and risks of living in space. Among other things, the ground teams perform analyses for metabolic and chemistry panels, immune function, microbiome, etc.

Systems

Urine Processing Assembly (UPA) Status: Yesterday, at approximately 2 hours and 12 minutes into a UPA process cycle, ‘UPA Fail’ annunciated and UPA transitioned to ‘stop’. An error code was received indicating the Pressure Control and Pump Assembly (PCPA) pump motor current was too high. After ground discussions, UPA was reactivated, however, after approximately 2 hours and 23 minutes of processing UPA faulted out. Teams stood down from additional troubleshooting while the forward plan is discussed.

Mobile Servicing System Operations: Yesterday, in preparation for SpX-20 berthing, Robotics Ground Controllers powered up SSRMS and performed a visual survey of the Node 2 Nadir Active Common Berthing System (CBM). Today, the ISS crew monitored Dragon approach to the ISS from the Cupola Robotic Workstation (RWS) and captured the Dragon using the SSRMS. Controllers then maneuvered the SSRMS to support inspection of the Dragon Passive CBM sealing surface and installed the Dragon on Node2 Nadir Active CBM. Once the CBM Ground Controllers had captured and A-bolted the Dragon to Node2, Robotics Ground Controllers de-configured the MSS from the Hot Backup Configuration and powered it down.

Completed Task List Activities:

WHC KTO R&R

Today’s Ground Activities:

All activities are complete unless otherwise noted.



Payload operations support

SpX-20 capture

Lookahead Plan

Tuesday, 3/10 (GMT 070)

Payloads:



CGBA-4 sample insert

Cold Stowage transfers

Locker reconfigurations

Mouse Mission-5

Nanoracks Mod-9

OsteoOmics

Systems:

Dragon ingress/cargo transfer

Wednesday, 3/11 (GMT 071)

Payloads:



Cold Stowage transfers

DOSIS-3D

Engineered Heart Tissue

Medium Temp PCG

Mouse Mission-5

Nanoracks Mod-51

OsteoOmics-2

PAUL

Standard Measures

Systems:

Restow Dragon Vestibule Outfitting Kit (VOK)

Thursday, 3/12 (GMT 072)

Payloads:



Food Acceptability

Locker reconfigurations

MELFI Icebrick insert

MISSE/JEMAL ops

Nanoracks Mod-9 ops 2

Systems:

JOTI config for MISSE transfer tray

Today’s Planned Activities:

All activities are complete unless otherwise noted.

