суббота, 16 ноября 2019 г.

Spacewalkers Complete First Excursion to Repair Cosmic Particle Detector














ISS - Expedition 61 Mission patch / EVA - Extra Vehicular Activities patch.

November 15, 2019

Expedition 61 Commander Luca Parmitano of ESA (European Space Agency) and NASA Flight Engineer Andrew Morgan concluded their spacewalk at 1:18 p.m. EST. During the six hour and 39 minute spacewalk, the two astronauts successfully positioned materials, removed a debris cover on the AMS, and installed handrails in preparation for the subsequent spacewalks.

The duo also completed a number of get-ahead tasks originally planned for the second spacewalk, including the removal of the vertical support beam cover for the area that houses the eight stainless steel tubes that will be cut and spliced together on the upcoming spacewalks.


Image above: Luca Parmitano of ESA (European Space Agency) attached to the Canadarm during the first Alpha Magnetic Spectrometer repair spacewalk on Nov. 15, 2019. Image Credit: NASA TV.

Today’s work clears the way for Parmitano and Morgan’s next spacewalk in the repair series Friday Nov. 22. The main focus of the second spacewalk will be the access, cut, and label the stainless steel tubes that attach the current cooling system to the AMS. The plan is to bypass the old thermal control system, attach a new one off the side of AMS during the third spacewalk, and then conduct leak checks.

In addition to the overall complexity of the instrument, astronauts have never before cut and reconnected fluid lines, like those that are part of the AMS thermal control system, during a spacewalk. To cut the cooling lines and complete other tasks in this series of spacewalks, scientists, engineers and astronauts on Earth have gone through several iterations of designing, prototyping, experimenting and validating many specialized tools in preparation for the complex work in space.


Image above: NASA astronaut Andrew Morgan and ESA (European Space Agency) Commander Luca Parmitano work inside the Quest airlock to prepare for their space walk to upgrade the Alpha Magnetic Spectrometer’s (AMS) thermal control system. Image Credit: NASA.

Space station crew members have conducted 222 spacewalks in support of assembly and maintenance of the orbiting laboratory. Spacewalkers have now spent a total of 58 days 3 hours and 8 minutes working outside the station. Parmitano has now conducted three spacewalks in his career and Morgan has now logged four spacewalks since his arrival on the station in July.

Related links:

Expedition 61: https://www.nasa.gov/mission_pages/station/expeditions/expedition61/index.html

Alpha Magnetic Spectrometer (AMS): https://www.nasa.gov/mission_pages/station/research/news/ams-spacewalks-attempt-to-revive-scientific-experiment

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

* This article was originally published here

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