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 …
Short Spacewalk Complete After Successful Installation Work
Expedition 51 Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA concluded their spacewalk at 10:06 a.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 …
NASA TV Live Broadcasts Tuesday Spacewalk
Expedition 51 Commander Peggy Whitson and Flight Engineer Jack Fischer of NASA will venture outside the International Space Station for a 2.5-hour contingency spacewalk Tuesday, May 23. The spacewalk will begin about 8 a.m. EDT, with complete coverage on NASA Television and the agency’s website beginning at 6:30 a.m. Whitson and Fischer will replace a …
ISS Daily Summary Report – 5/22/2017
External (EXT) Multiplexer/Demultiplexer (MDM)-1 Failure: On Saturday EXT MDM-1 experienced an anomaly. Attempts to recover the MDM remotely were unsuccessful. Ground Teams configured EXT MDM-2 as primary and set up systems for the next worse failure per established Flight Rules. An IMMT was held Sunday and directed Team 4 to assess the feasibility of performing …
Astronauts Review Plans, Ready Gear for Tuesday Spacewalk
Astronauts Peggy Whitson and Jack Fischer are getting ready for a contingency spacewalk Tuesday morning. Whitson and Fischer are set to begin the spacewalk at 8 a.m. Tuesday for about two hours of maintenance work. NASA Television coverage will begin at 6:30 a.m. The spacewalkers are gathering their tools and checking their spacesuits today with …
Station Managers Give Go for Tuesday Spacewalk
International Space Station Program managers have given the green light for a contingency spacewalk on Tuesday by two Expedition 51 crewmembers to change out a multiplexer-demultiplexer (MDM) data relay box on the S0 truss that failed on Saturday morning. The cause of the MDM failure is not known. After a review of spacewalk preparations and …
Spacewalk Planned to Change Out Failed Relay Box
International Space Station Program managers met Sunday and gave approval for a contingency spacewalk no earlier than Tuesday by two Expedition 51 crewmembers to change out a multiplexer-demultiplexer (MDM) data relay box on the S0 truss that failed on Saturday morning. The cause of the MDM failure is not known. A final decision on a …
Station Managers Work Plan as Controllers Troubleshoot Data Relay Box
International Space Station managers will meet Sunday morning to discuss a forward plan for dealing with the apparent failure of one of two fully redundant multiplexer-demultiplexer (MDM) data relay boxes on the S0 truss of the complex. External MDM-1 apparently failed at 1:13 p.m. Central time Saturday. Multiple attempts by flight controllers to restore power …
ISS Daily Summary Report – 5/19/2017
Fluid Shifts: A 50S crewmember performed their Flight Day (FD) 180 Fluid Shifts Chibis operations in the Russian Segment. They donned the Lower Body Negative Pressure (LBNP/Chibis) device while the operator, with ground support in Moscow, assisted in the medical monitoring. While the subject was in the LBNP and experiencing the negative pressure (pulling the …
In Case You Missed It: New Studies Tie Extreme Haze in China to Climate Change
In 2012, Arctic sea ice extent was unusually low in September. New research suggests that may have contributed to a bad haze outbreak in China the next winter.