(CNN)Early Friday, NASA astronauts Chris Cassidy and Robert Behnken began a spacewalk outdoors of the Global Area Station to substitute lithium ion batteries for one particular of the station’s ability channels. It is envisioned to past for about 7 several hours.
Friday’s spacewalk started at 7:32 a.m. ET. They achieved their function web page on the station about an hour in to the stroll.
Early throughout the spacewalk as Cassidy exited the space station’s hatch, his still left wrist mirror detached and flew absent, but it poses no chance to the crew and the walk ongoing as planned, according to NASA. The mirrors make it possible for them to see areas of their suits, like labels, switches and actuators, that are in any other case out of look at. Cassidy can use the mirror on his right wrist for the length of the spacewalk.
Each astronauts are veteran spacewalkers. This will be Cassidy’s seventh venture outdoors and Behnken’s eighth. They will perform a second similar spacewalk on July 1.
Behnken, along with NASA astronaut Doug Hurley, introduced from the United States and joined Cassidy on the house station on May 31. They have been aboard SpaceX’s Crew Dragon during the Demo-two mission.
These spacewalks are the end result of a collection of electric power upgrades that started in January 2017 to swap nickel-hydrogen batteries with new lithium ion batteries. The new batteries arrived last thirty day period on a Japanese cargo ship.
These two spacewalks will concentrate on replacing batteries for a person of the ability channels on the considerably starboard truss of the station.
This endeavor, however, is nothinglike replacing batteries in your remote. These batteries are substantial, dependent on the animation NASA shared in a tweet. The new batteries just about every have a mass of 428 lbs ..
The astronauts will make many trips back again and forth alongside the truss to get rid of and exchange each and every battery, making use of foot restraints to help retain their place and hand applications for adjustments.
For both equally spacewalks, Cassidy will be crew member I and putting on a spacesuit exhibiting pink stripes, even though Behnken will serve as crew member II in a fit with no stripes. Hurley and Russian cosmonaut Ivan Vagner will help Cassidy and Behnken into their spacesuits. Hurley will run the station’s robotic arm to assist one of the two spacewalks.
The battery replacements, which will have a twenty-yr life time, will put the station in a considerably superior configuration for the extensive term, reported Kenneth Todd, deputy Worldwide Room Station program supervisor, through a NASA press meeting on Wednesday.
Long run spacewalks about the summer season will swap batteries on a next electric power channel.
Behnken just lately talked about the spacewalk, and why it really is critical to swap the batteries, throughout a connect with to the room station from CNN innovation and space reporter Rachel Crane.
“When the place station is in the sun, it is amassing electrical power and it demands to retailer for when it can be in the dark,” he mentioned. “And so those people batteries, as they’re cycled time and time once more, they don down and require to be changed. And so periodically that upkeep is needed.”
Behnken mentioned he is wanting ahead to another spacewalk encounter.
“I actually look ahead to the views of the Earth when we get a free moment,” he mentioned. “I consider each and every astronaut, when they go out on their to start with spacewalk, they are truly focused on making an attempt to get all the functions completed and do a excellent position so that they can almost certainly get a prospect to do an additional a person if the opportunity presents itself.
“But soon after you’ve accomplished a few and know what to anticipate as you go by it, it is crucial to, you know, acquire some psychological photographs, some psychological pictures, or remember what it was like to be outdoors.”