NASA Space Station On-Orbit Status 23 May 2017 - Unexpected Spacewalk Completed

Astronaut Jack Fischer waves while attached to the Destiny laboratory during a spacewalk to replace a failed data relay box and install a pair wireless antennas. Credit: NASA.

Expedition 51 Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA concluded their spacewalk at 10:06 p.m. EDT.

During the spacewalk, which lasted two hours and 46 minutes, the two astronauts successfully replaced a computer relay box, and installed a pair of antennas on station to enhance wireless communication for future spacewalks.

Spacewalkers have now spent a total of 1,250 hours and 41 minutes working outside the station during 201 spacewalks in support of assembly and maintenance of the orbiting laboratory. This was the 10th spacewalk for Whitson, who moves into third place all-time for cumulative spacewalking time, and the second for Fischer.

On-Orbit Status Report

External (EXT) Multiplexer/Demultiplexer (MDM)-1 R&R Extravehicular Activity (EVA): With IV support from Thomas Pesquet, today Peggy Whitson (EV1) and Jack Fischer (EV2) performed a 2 hour 46 minute EVA to Remove & Replace (R&R) the EXT MDM-1 that failed on Saturday, May 20th. While Whitson performed the EXT MDM R&R, Fischer installed the Lab Nadir External Wireless Communications (EWC) Antennas that were deferred from the last EVA.

Solar Array Battery 3A1 Temperatures - On 5/22/17, Battery 3A1 average temperatures peaked above 25°C for three concurrent orbits due to high solar beta, with a maximum average temperature peak of 25.6°C. Per Flight Rule, ground controllers terminated the use of the battery string by turning the Battery Charge Discharge Unit (BCDU) 3A1 converter off and commanding the Fault Isolator (FI) open. There is no impact to downstream loads in this configuration

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

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
Comm configuration for EVA
Regeneration of Micropurification Unit (БМП) Ф2 Cartridge (start)
Recharging Soyuz 733 Samsung PC Battery
ISS Crew departure preparation
Update BRI Configuration File to Version 6.3
Recharging Soyuz 735 Samsung PC Battery
Extravehicular Mobility Unit (EMU) Purge
LBNP Training (PRELIMINARY)
Extravehicular Mobility Unit (EMU) In-Suit Light Exercise (ISLE) Prebreathe
Soyuz 733 IRIDIUM phone recharge, setup, start charge (ФГБ1ПГО_2_224_1, 0.5 СТВ 1017 (002857J), Soft Container (00044322R))
Soyuz 733 Recharging IRIDIUM Phone battery charge status
Prebreathe in EMU
БРП-М water sampling to drink bags
Soyuz 733 IRIDIUM phone recharge, terminate charge
Equipment Stowage under Soyuz 733 center seat Note 7
Sampling condensate water [КАВ] before СРВ-К2М Gas-liquid mixture filter (ФГС) to drink bags, end
Crewlock Depress
СВО-ЗВ water sampling to Russian drink bags
Crewlock Egress
Terminate Soyuz 735 Samsung PC Battery Charge (as necessary)
Replace Failed EXT MDM
Install Lab EWC Antennas
KORREKTSIYA. Logging Liquid and Food (Medicine) Intake
Collecting condensate water samples [КАВ] up to СРВ-К2М БКО, equipment setup, sampler installation
Crewlock Ingress
Crew Departure Prep
MORZE. Psycho-physiological Evaluation: Strelau Test
Crewlock Ingress
Soyuz 735 IRIDIUM phone charge
EVA Glove Photo Setup
Crewlock Pre Repress
Soyuz 735 IRIDIUM phone charge, terminate charge, teardown of the setup Stow: ФГБ1ПГО_2_224_1, 0.5 СТВ 1017 (002857J), Soft Container (00044322R)
Crewlock Repress
Extra Vehicular Activity (EVA) Post-EVA Activities
Collecting condensate water samples [КАВ] upstream of СРВ-К2М БКО, sampler replacement
Extravehicular Mobility Unit (EMU) Water Recharge
Extra Vehicular Activity (EVA) Post-EVA Activities
Return to nominal comm configuration after USOS EVA
EVA Glove Photo Downlink
Extravehicular Activity (EVA) Camera Image Downlink
Photo/TV Extravehicular Activity (EVA) GoPro Downlink
Photo/TV Extravehicular Activity (EVA) Camera Disassembly
External Wireless Instrumentation System (EWIS) Network Control Unit (NCU) Enable
MORZE. Closeout Ops
KORREKTSIYA. NEUROIMMUNITET. Experiment setup
Terminate Soyuz 733 Samsung PC Battery Charge (as necessary)
Sampling condensate water [КАВ] upstream of СРВК-2М БКО, removing sampler, equipment disassembly
OsteoOmics Saline Kit Relocate
Meteor Shutter Open

Completed Task List Items
Veg-03 Plant Water/Photo
iPad Certificate Verification
Grasp Big Picture [from tomorrow's timeline]
Dragon Rendezvous CBT [from tomorrow's timeline]
Dragon Robotics review [from tomorrow's timeline]

Ground Activities
All activities were completed unless otherwise noted.
System commanding in support of EVA
High Beta monitoring

Three-Day Look Ahead:
Wednesday, 05/24: Dragon OBT Conf, OsteoOmics, Cubesat Deployer Swap, EVA Debrief, Airlock deconfig
Thursday, 05/25: Body Measures, OsteoOmics, GRASP, Dragon RoBOT OBT, OGS Sensor R&R
Friday, 05/26: OBT Dragon Offset Grapple, EVA loops scrub/conductivity tests, OBT Soyuz drill, GRASP

QUICK ISS Status - Environmental Control Group:
Component - Status
Elektron - Off
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 - Operate
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

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