mardi 30 janvier 2018

Rescheduled Robotics Work Makes Two Spacewalks in February









ISS - Expedition 54 Mission patch.

Jan. 30, 2018

Saying Goodnight

Image above: "Good night from @Space_Station. DC, NY, Toronto, Cleveland, and surrounding areas!" This note from NASA astronaut Mark Vande Hei may be visually stunning, but it's a common occurrence on the International Space Station, which experiences 16 sunrises and sunsets every day. Image Credits: NASA/Mark Vande Hei.

International Space Station managers have rescheduled a U.S. spacewalk postponed on Monday to mid-February. Meanwhile, the Expedition 54 crew is also preparing for a Russian spacewalk this Friday.

Astronauts Mark Vande Hei and Norishige Kanai are planning to begin their spacewalk Feb. 15 at 7:10 a.m. EST to stow and reposition a pair of Latching End Effectors (LEEs). The LEEs are robotic hands attached to the tip of the Canadarm2 that grapple and release cargo ships and external station hardware.

During the 6.5-hour excursion, the spacewalkers will first move an older LEE from a bracket on the Mobile Base System on the truss to the Quest airlock. It was removed from Canadarm2 during a spacewalk last October. Next, a degraded LEE detached from Canadarm2 during the last U.S. spacewalk on Jan. 23 will be moved from an external stowage platform to the Mobile Base System. NASA TV will begin its live broadcast of the spacewalk at 5:30 a.m.


Image above: Astronaut Scott Tingle works on a U.S. spacesuit inside the Quest airlock at the beginning of January 2018 before a pair of robotics maintenance spacewalks were scheduled to begin. Image Credit: NASA.

Cosmonauts Alexander Misurkin and Anton Shkaplerov will exit the Pirs airlock in their Orlan spacesuits Friday at around 10:30 a.m. for 6.5 hours of Russian maintenance, highlighted by the swap out of an electronics system for the Zvezda Service Module’s high gain communications antenna. Live NASA TV coverage begins at 9:45 a.m.

Earlier today, Zvezda’s engines fired for 23 seconds to increase the station’s altitude and set up operations for the arrival of cargo and the departure of crew. The Progress 69 cargo craft will launch from the Baikonur Cosmodrome in Kazakhstan Feb. 11, then 3 Expedition 54 crew members will depart the station in their Soyuz MS-06 spacecraft Feb. 27 for a landing in Kazakhstan later that day.

Related links:

NASA TV: https://www.nasa.gov/multimedia/nasatv/index.html

Expedition 54: https://www.nasa.gov/mission_pages/station/expeditions/expedition54/index.html

Space Station Research and Technology: https://www.nasa.gov/mission_pages/station/research/index.html

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

Images (mentioned), Text, Credits: NASA/Mark Garcia.

Best regards, Orbiter.ch

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