Artykuły o Extravehicular activities (EVA)

[Orionid]

Spacewalking cosmonauts activate space station’s newest Russian module
January 19, 2022 Stephen Clark [SFN]


Cosmonauts Anton Shkaplerov and Pyotr Dubrov work outside the Prichal module Wednesday. Credit: NASA/Mark Vande Hei

Russian cosmonauts Anton Shkaplerov and Pyotr Dubrov completed a 7-hour, 11-minute spacewalk Wednesday outside the International Space Station, preparing Russia’s new Prichal module for the arrival of the next Soyuz crew spacecraft in March.

Wearing Orlan spacesuits, Shkaplerov and Dubrov began their spacewalk at 7:17 a.m. EST (1217 GMT) Wednesday and exited the space station through the hatch of the Russian Poisk airlock.
Source: https://spaceflightnow.com/2022/01/19/spacewalking-cosmonauts-activate-space-stations-newest-russian-module/

Astronauts prep for new solar arrays on nearly seven-hour spacewalk
March 15, 2022 Stephen Clark [SFN]


Astronaut Kayla Barron is seen on a spacewalk Tuesday through the helmet-mounted camera of astronaut Raja Chari. Credit: NASA TV / Spaceflight Now

Astronauts Kayla Barron and Raja Chari floated out of the International Space Station airlock for a spacewalk Tuesday, installing brackets and struts to support new solar arrays to upgrade the research lab’s power system on the same day that crewmate Mark Vande Hei marked his 341st day in orbit, a U.S. record for a single spaceflight.

Source: https://spaceflightnow.com/2022/03/15/iss-us-eva-79/

Astronauts complete spacewalk for space station maintenance and upgrades
March 23, 2022 William Harwood  EDITOR’S NOTE: Updated at 5:30 p.m. EDT (2130 GMT) after end of spacewalk. [SFN]
STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION


German astronaut Matthias Maurer outside the International Space Station on a spacewalk Wednesday. Credit: NASA TV / Spaceflight Now

Two astronauts floated outside the International Space Station Wednesday and installed refurbished ammonia jumpers in the lab’s cooling system to bring it back up to full efficiency, replaced a high-definition camera and made power and data connections on a European experiment platform.

Source: https://spaceflightnow.com/2022/03/23/us-eva-80/

Russian cosmonauts complete spacewalk to begin activating European robotic arm
April 18, 2022 Stephen Clark EDITOR’S NOTE: Updated after end of spacewalk. [SFN]


Cosmonauts Oleg Artemyev (in the suit with red stripes) and Denis Matveev (with blue stripes) outside the Nauka module at the International Space Station. Credit: NASA

Two Russian cosmonauts put on their Orlan spacesuits and headed outside the International Space Station Monday for a spacewalk to begin outfitting a European robotic arm mounted on a Russian science module launched last year, a collaboration that’s been unaffected by souring international relations on Earth.

Cosmonauts Oleg Artemyev and Denis Matveev opened the hatch to the Poisk airlock module at 11 a.m. EDT (1500 GMT) Monday.

The spacewalk was the third in Artemyev’s cosmonaut career, and the first for Matveev. Artemyev, Matveev, and crewmate Sergey Korsakov arrived at the space station last month on a Soyuz spacecraft.

Up to seven spacewalks are planned for their six-month expedition, including work to activate and check out the European Robotic Arm. The arm is a 37-foot-long (11.3-meter) crane-like structure to assist with the movement of external payloads and help astronauts with spacewalks. (...)

The European Robotic Arm can walk across the Russian segment of the space station. ESA says it’s capable of carrying a load of more than 17,000 pounds, or 8 metric tons, with a precision of one-fifth of an inch (5 millimeters).


This infographic shows details of the European Robotic Arm. Credit: European Space Agency

A communications problem between a computer on the Russian Zvezda service module and the European Robotic Arm delayed commissioning of the arm after arriving at the space station. (...)
https://spaceflightnow.com/2022/04/18/russian-eva-52/

Cosmonauts activate European Robotic Arm on 250th space station spacewalk
April 28, 2022 Stephen Clark [SFN]


The European Robotic Arm during activation Thursday. Credit: NASA TV / Spaceflight Now

Two Russian cosmonauts unlocked the European Robotic Arm from its launch moorings on a spacewalk Thursday, allowing the manipulator to move around outside the International Space Station for the first time.

Wearing Russian Orlan space suits, the cosmonauts opened the hatch to the Poisk airlock at 10:58 a.m. EDT (1458 GMT), marking the official start of the spacewalk. (...)

Artemyev and Matveev also briefly unfurled a flag commemorating Russia’s Victory Day celebrating the defeat of Nazi Germany in World War II.

The spacewalkers ran out of time before the day’s final planned movement of the robotic arm, which would have maneuvered one of the arm’s hands to a third base point — a so-called “double walkoff.”

The cosmonauts returned to the airlock and closed the hatch at 6:40 p.m. EDT (2240 GMT), wrapping up a 7-hour, 52-minute spacewalk. (...)

The excursion Thursday was the 250th spacewalk since 1998 in support of space station assembly and maintenance. (...)
https://spaceflightnow.com/2022/04/28/russian-eva-53/

NASA puts ISS spacewalks on hold to investigate water leak
by Jeff Foust — May 18, 2022 [SN]


ESA astronaut Matthias Maurer during a March 23 spacewalk, at the end of which he reported water pooling on the visor of his spacesuit helmet. Credit: NASA

WASHINGTON — NASA is continuing to investigate water that leaked into a spacesuit helmet during a spacewalk earlier this year and is holding off on future spacewalks until engineers can resolve the problem.

The leak took place during the most recent spacewalk from the U.S. segment of the station March 23, involving NASA astronaut Raja Chari and European Space Agency astronaut Matthias Maurer. At the end of the nearly seven-hour spacewalk, Maurer reported that water had pooled on his visor, although the thin layer of water, about 20 to 25 centimeters across, did not pose an immediate threat to him.
https://spacenews.com/nasa-puts-iss-spacewalks-on-hold-to-investigate-water-leak/

ISS spacesuits ‘no-go’ for non-emergency spacewalks after water intrusion
May 17, 2022 William Harwood  STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION [SFN]


European Space Agency astronaut Matthias Maurer on a spacewalk March 23 outside the International Space Station. Credit: NASA

The aging shuttle-era spacesuits aboard the International Space Station have been declared “no-go” for operational, normally planned spacewalks pending analysis to determine what led to excess water getting into an astronaut’s helmet during a March excursion, officials confirmed Tuesday.
https://spaceflightnow.com/2022/05/17/iss-spacesuits-no-go-for-non-emergency-spacewalks-after-water-intrusion/

Russian cosmonaut, European astronaut complete joint spacewalk
July 21, 2022 Stephen Clark [SFN]


European Space Agency astronaut Samantha Cristoforetti works with one of 10 radio tech demo satellites deployed during Thursday’s spacewalk. Credit: NASA TV / Spaceflight Now

Russian cosmonaut Oleg Artemyev and European astronaut Samantha Cristoforetti headed outside the International Space Station on a rare joint spacewalk Thursday. They continued outfitting a European robotic arm and deployed 10 nanosatellites for radio technology experiments.

Artemyev and Cristoforetti opened the hatch to the space station’s Poisk airlock at 10:50 a.m. EDT (1450 GMT) Thursday, marking the official start of the spacewalk.
https://spaceflightnow.com/2022/07/21/russian-esa-iss-eva/

[Orionid]

4. kobiecy spacer kosmiczny.
Moghbeli zgubiła torbę z narzędziami, co czyni z niej drugi znany przypadek zagubienia torby narzędziowej w kosmosie przez kobietę.

Mixed results for spacewalkers after time lost dealing with difficult-to-loosen bolts
November 1, 2023 William Harwood [SFN]


Jasmin Moghbeli, wearing a spacesuit with red stripes, works with Loral O’Hara to secure insulation around a failed radio communications unit during the fourth all-female spacewalk. Image: NASA TV.

Astronauts Jasmin Moghbeli and Loral O’Hara worked outside the International Space Station Wednesday to replace a bearing assembly in one of the lab’s solar array rotation mechanisms. But the task took longer than expected and they were unable to retrieve a failed electronics box as planned.
https://spaceflightnow.com/2023/11/01/mixed-results-for-spacewalkers-after-time-lost-dealing-with-difficult-to-loosen-bolts/

[Orionid]

Spacewalk terminated due to spacesuit water leak
January 15, 2016 William Harwood STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION


Astronaut Tim Peake is seen outside the International Space Station during Friday’s spacewalk.

Flight controllers ordered two astronauts to terminate a spacewalk outside the International Space Station Friday after one of them reported a small amount of water leaking into his space helmet. While not nearly as dangerous as a 2013 helmet leak that threatened to drown an Italian spacewalker, flight controllers took no chances, ordering both men back to the station’s airlock.
https://spaceflightnow.com/2016/01/15/spacewalk-terminated-due-to-spacesuit-water-leak/


Station astronauts complete second battery swap spacewalk
January 13, 2017 William Harwood STORY WRITTEN FOR CBS NEWS & USED WITH PERMISSION [SFN]


Shane Kimbrough, left, maneuvers a battery adapter plate into position at the base of a space station solar array while Thomas Pesquet holds an aging nickel-hydrogen battery that later was mounted atop the plate. Credit: NASA TV

Two space station astronauts carried out a trouble-free five-hour 58-minute spacewalk Friday, completing complex battery replacement work on the right side of the lab’s solar power truss with enough time left over to carry out a variety of lower-priority “get-ahead” tasks.

The International Space Station relies on four huge sets of solar arrays that rotate to track the sun. Each set is equipped with 12 nickel-hydrogen batteries that store power for use when the station is in Earth’s shadow. All 48 NiH2 batteries will be replaced over the next few years with 24 smaller but more powerful lithium-ion batteries.
https://spaceflightnow.com/2017/01/13/station-astronauts-complete-second-battery-swap-spacewalk/


ISS Crew open 2011 spacewalk marathon with 27th Russian EVA
written by Pete Harding January 21, 2011 [NSF]



The International Space Station (ISS) Expedition 26 crew have conducted the Russian EVA-27 on Friday, marking the first in what is currently planned to be a total of 10 Shuttle and ISS EVAs in 2011. Projected to be a six hour EVA, the spacewalk began with hatch opening at 2:29 PM GMT and ended well ahead of schedule at 7:52 PM GMT – after the duo completed all their tasks without any serious issues.
https://www.nasaspaceflight.com/2011/01/iss-crew-2011-spacewalk-marathon-27th-russian-eva/

[Orionid]

Cosmonauts conduct spacewalk

On April 25, 2024, members of Expedition 71 Oleg Kononenko and Nikolai Chub performed the VKD-62 spacewalk from the Russian Segment of the International Space Station, ISS.



The VKD-62 spacewalk, staged from the Poisk module, MIM2, was originally expected to last more than 6.5 hours with the main goal of completing the deployment of the Rakurs synthetic remote-sensing radar for the Napor-miniRSA experiment on the exterior of the Nauka module, MLM. The four-section radar panel was installed during the VKD-61 spacewalk in October 2023, but one of its sections failed to lock in opened position.
https://russianspaceweb.com/iss_vkd62.html