NASA Space Station On-Orbit Status 12 May 2017 - Four Hour Spacewalk Completed

©NASA

NASA Space Station On-Orbit Status 12 May 2017 - Four Hour Spacewalk Completed.

Expedition 51 Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA concluded their spacewalk at 1:21 p.m. EDT. During the spacewalk, which lasted just over four hours, the two astronauts successfully replaced a large avionics box that supplies electricity and data connections to the science experiments.

The astronauts also completed additional tasks to install a connector that will route data to the Alpha Magnetic Spectrometer, repair insulation at the connecting point of the Japanese robotic arm, and install a protective shield on the Pressurized Mating Adapter-3. This adapter will host a new international docking port for the arrival of commercial crew spacecraft.

Spacewalkers have now spent a total of 1,247 hours and 55 minutes working outside the station during 200 spacewalks in support of assembly and maintenance of the orbiting laboratory. The first spacewalk in support of International Space Station assembly and maintenance was conducted on Dec. 7, 1998, by NASA astronauts Jerry Ross and Jim Newman during space shuttle Endeavour's STS-88 mission. Astronauts completed attaching and outfitting of the first two components of the station, the Russian Zarya module and the U.S. Unity module.

On-Orbit Status Report

EXPRESS Pallet Controller Assembly (ExPCA) Extravehicular Activity (EVA) #42: EV1 Peggy Whitson and EV2 Jack Fischer performed the ExPCA EVA today. At the start of In-Suit Light Exercise (ISLE) Prebreathe, a water leak was discovered at the Service Cooling Umbilical (SCU) for Fischer's suit. The leaking SCU was subsequently disconnected and the functioning SCU was shared between the two EMU suits which impacted EMU battery capability, resulting in the EVA being shortened to 4 hours 12 minutes. During that time, the following tasks were completed:

Planned Tasks

ExPCA R&R
Pressurized Mating Adapter (PMA) 3 forward shield install
Alpha Magnetic Spectrometer (AMS) 1553 terminator install
Secure Multilayer Insulation (MLI) on Japanese Experiment Module Remote Manipulator System (JEMRMS)
Get-ahead Task

COL Articulating Portable Foot Restraint (APFR) relocation to PMA3
Mobile Servicing System (MSS) Operations: Robotics Ground Controllers powered up the Mobile Servicing System (MSS) in support of today's EXpedite the PRocessing of Experiments to Space Station (ExPRESS) Carrier Avionics (ExPCA) EVA. IVA Crew Pesquet maneuvered the Space Station Remote Manipulator System (SSRMS) into position, then EV2 Fisher installed the Articulating Portable Foot Restraint (APFR) on the SSRMS Latching End Effector (LEE) and ingressed it. Pesquet then maneuvered the SSRMS for EV2 to remove and replace the failed ExPCA on the Express Logistics Carrier #4 (ELC-4) with the spare ExPCA. When the failed ExPCA was stowed, Pesquet maneuvered the SSRMS to position EV2 for APFR egress, then Pesquet backed the SSRMS to a park position.

Today's Planned Activities
All activities were completed unless otherwise noted.

ECON-M. Observation and Photography
Calf Measurement
LAB BelAir Wireless Access Points (WAPs) Power down and Disconnect
External Wireless EVA Inhibit
ISS HAM Radio Power Down
EVA COTS UHF Communication Unit (CUCU) Verify off
USOS Window Shutter Close
Extravehicular Activity (EVA) In-Suit Light Exercise (ISLE) Preparation
USOS Extravehicular Activity (EVA) Communication Configuration
СТТС routine ops (LF link and VHF receiver health check). Headset Audit
Extravehicular Mobility Unit (EMU) Purge
Study of veins in lower extremities
Extravehicular Mobility Unit (EMU) In-Suit Light Exercise (ISLE) Prebreathe
LCG stowage into the crew bag
Orlan MK No. 5 СФ unit deinstallation
On MCC Go Transfer of brine and urine from ЕДВ-У to Progress 435 (DC1) Rodnik H2O Tank 2
Orlan-MK No.5 УДСК Pressure Gauge Deinstallation
Removal of water tank from Orlan-MK No.5
Crewlock Depress
Stowage of pressurized gloves ГП-10КМ into the crew bag
Crewlock Post Depress
Swapping electrical umbilical connector cover from Orlan-MK No.5 to Orlan-MK No.6
Crewlock Egress
SSRMS ExPCA R&R EVA Support
Post-EVA Orlan-MK No.5 Equipment Stowage
ExPRESS Carrier Avionics (ExPCA) Setup
CALCIUM. Experiment Session 6
ExPRESS Carrier Avionics (ExPCA) R&R
Orlan No.5 Stowage in Progress 435 (DC1)
AMS Terminator Install and Photo
CP3 High Definition (HD) Camera Install [Not performed due to shortened EVA]
CASKAD. Bioreactor Transfer ТБУ-В No. 04 at +4°С deg C. Deactivation of ТБУ-В thermostat No.02
ExPRESS Carrier Avionics (ExPCA) Cleanup
LAB Nadir EWC Antenna Install [Not performed due to shortened EVA]
PMA3 Forward Shield Install
Inventory of the Hardware Connected to the Outlets in RS
PMA3 Forward Shield Install
JEMRMS Multi-Layer Insulation (MLI) Repair
LAB Nadir EWC Antenna Install [Not performed due to shortened EVA]
Crewlock Ingress
EVA Glove Photo Setup
Crewlock Repress
Extra Vehicular Activity (EVA) Post-EVA Activities
Post Extravehicular Activity (EVA) Communication Deconfiguration
EVA Glove Photo Downlink
Extravehicular Activity (EVA) Camera Thermal Blanket Stow
Extravehicular Activity (EVA) Camera Image Downlink
Photo/TV Extravehicular Activity (EVA) GoPro Downlink
External Wireless Instrumentation System (EWIS) Network Control Unit (NCU) Enable
LAB BelAir Wireless Access Point (WAP) Connect Power Cable and Power ON

Completed Task List Items
None

Ground Activities
All activities were completed unless otherwise noted.
EVA Support

Three-Day Look Ahead:
Friday, 05/12: ExPCA EVA #42
Saturday, 05/13: Water dispensing for Electrowetting Drawer, Skinsuit height measurement, EVA camera disassembly/Airlock deconfig/debrief
Sunday, 05/14: Crew off duty, Fluid Shifts hardware gather, Ultrasound setup in Russian Segment
Monday, 05/15: Genes In Space, Fluid Shifts/Chibis, NRCSD #11 CubeSat deploy, OsteoOmics biocell fixation

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 - Standby
Oxygen Generation Assembly (OGA) - Process
Urine Processing Assembly (UPA) - Standby
Trace Contaminant Control System (TCCS) Lab - Full up
Trace Contaminant Control System (TCCS) Node 3 - Off

Please follow SpaceRef on Twitter and Like us on Facebook.