четверг, 17 октября 2019 г.

NASA Announces Changes to Spacewalk Schedule, First All-Female Spacewalk


EVA — Extra Vehicular Activities patch.


Oct. 17, 2019


NASA is hosting a media teleconference at 4:30 p.m. EDT today to discuss this week’s first all-female spacewalk at the International Space Station. Audio of the teleconference will stream live on the agency’s website: https://www.nasa.gov/live


Kenny Todd, manager of International Space Station Operations Integration, and Megan McArthur, deputy chief of NASA’s Astronaut Office, will talk to and take questions from media about recent changes to the agency’s spacewalk schedule and moving forward with efforts to upgrade the space station’s power system.


NASA astronauts Christina Koch and Jessica Meir will venture outside the space station at 7:50 a.m. Thursday, Oct. 17 or Friday, Oct. 18. Live coverage will begin at 6:30 a.m. on NASA Television and the agency’s website.



Image above: NASA astronauts Christina Koch and Jessica Meir. Image Credit: NASA.


Space station managers have postponed three spacewalks previously scheduled for this and next week to install new batteries in order to first replace a faulty battery charge/discharge unit (BCDU). The BCDU failed to activate following the Oct. 11 installation of new lithium-ion batteries on the space station’s truss. The three spacewalks previously planned to continue the installation of additional lithium-ion batteries will be rescheduled.


The BCDU failure has not impacted station operations, safety of the crew, or the ongoing experiments aboard the orbiting laboratory, many in preparation for future human missions to the Moon and Mars. The station’s overall power supply, which is fed by four sets of batteries and solar arrays, remains sufficient for all operations. However, the faulty power unit does prevent a set of batteries installed earlier this month from providing increased station power.


The BCDU’s regulate the amount of charge put into the batteries that collect energy from the station’s solar arrays to power station systems during periods when the station orbits during nighttime passes around Earth. Two other charge/discharge units on the affected 2B power channel did activate as planned and are providing power to station systems.


This will be Koch’s fourth spacewalk and Meir’s first. Watch video of the two discussing the possibility of conducting a spacewalk together at: https://youtu.be/2o4XMOj2zzY?t=1113


Learn more about International Space Station research, operations, and its crew at:


https://www.nasa.gov/station


Expedition 61: https://www.nasa.gov/mission_pages/station/expeditions/future.html


International Space Station (ISS): https://www.nasa.gov/mission_pages/station/main/index.html


Moon and Mars: https://www.nasa.gov/specials/moon2mars/


Image (mentioned), Text, Credits: NASA/Karen Northon/Stephanie Schierholz/JSC/Brandi Dean.


Best regards, Orbiter.chArchive link


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