Two NASA astronauts labored to interchange batteries start air of the World Dwelling Predicament, completing the first in a chain of five deliberate spacewalks dedicated to upgrading the orbiting laboratory’s strength arrangement.
Expedition 61 flight engineers Christina Koch and Andrew Morgan labored within the vacuum of scrape for 7 hours and 1 minute on Sunday (Oct. 6). Their extravehicular job (EVA, or spacewalk) began at 7: 39 a.m. EDT (1139 GMT) and ended at 2: 40 p.m. EDT (1840 GMT).
Persevering with a job that began with an preliminary scrape of battery replacements in January 2017, Koch and Morgan ventured to the some distance left, or port, side of the scrape arena’s backbone truss to work on one of the most outpost’s older strength storage items.
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In a gaze from her helmet digital camera, NASA astronaut Christina Koch holds one in every of the batteries that she and astronaut Andrew Morgan labored to interchange sooner or later of a spacewalk start air of the World Dwelling Predicament on Sunday, Oct. 6, 2019.
(Image credit: NASA TV)
“Oh my goodness, it’s some distance good-attempting,” said Morgan early within the spacewalk, reacting to the sun rising as he peered off the side of the realm at Earth below. “Right here’s moderately awesome.”
The scrape arena is powered by eight comely solar array wings, four on either side of the truss. The arrays feed electrical energy to the realm’s systems when in daylight and payment a monetary institution of 4 comely batteries mounted at their horrible for when the realm passes into the shadow of Earth.
Koch and Morgan modified two of the passe nickel-hydrogen batteries with two novel lithium-ion batteries that were delivered to the scrape arena on board Japan’s H-II Transfer Vehicle-8 (HTV-8) that arrived on Sept. 28. Every of the extra highly efficient lithium-ion batteries can withhold the payment of two of the nickel-hydrogen batteries.
The spacewalking duo first eradicated one in every of the older batteries and then, by sparsely handing it to each assorted, shepherded the big unit to an empty slot on the nearby uncovered pallet preserving the novel batteries.
“I hold the battery,” said Koch, preserving the nickel-hydrogen battery.
“You hold the battery,” confirmed Morgan.
Every battery is ready half the scale of a fridge, or 40 inches prolonged by 37 inches huge by 19 inches in peak (101 by 94 by 48 centimeters). The passe nickel-hydrogen batteries weigh 365 lbs. (165 kilograms) each. The lithium-ion replacements weigh 428 lbs. (194 kg). While weight is now now not a topic within the microgravity environment of scrape, the batteries’ mass is serene a ingredient through inertia.
The first passe battery used to be “snug-docked” on the uncovered pallet about two hours into the EVA.
NASA astronaut Jessica Meir, working from contained within the realm, then worn the Canadarm2 robotic arm to reposition the pallet so as that the first replace battery used to be internal sight of the spacewalkers. Koch and Morgan subsequent repositioned the novel lithium-ion battery to the empty slot they’d beautiful opened on the integrated equipment assembly on the Port 6 (P6) truss.
NASA astronaut Andrew Morgan works to install a battery adapter plate sooner or later of a spacewalk to upgrade the World Dwelling Predicament’s strength arrangement on Sunday, Oct. 6, 2019.
(Image credit: NASA TV)
The first novel battery used to be bolted into boom about 50 minutes after the passe battery used to be stowed on the uncovered pallet.
The astronauts subsequent eradicated an adapter plate from the pallet and installed it on the truss to integrate the newly-installed lithium-ion battery into the realm’s electrical arrangement. Working successfully earlier than time table, Koch and Morgan were given the inch by mission administration in Houston to make a decision on one more of the nickel-hydrogen batteries and mount it atop the adapter plate, where this will be remain kept for the prolonged period of time.
Finally, Koch and Morgan moved one more of the novel lithium-ion batteries from the pallet to the truss, where they installed it within the empty slot vacated by the 2nd nickel-hydrogen unit. The two also repositioned battery maneuvering instruments and loosened the torque on bolts securing two nickel-hydrogen batteries in preparation for the subsequent spacewalk.
“It has been an excellent-attempting day,” said Koch once serve contained within the scrape arena’s Quest airlock. “We seek for forward to the comfort of the sequence.”
Expedition 61 flight engineers Christina Koch (top, left) and Andrew Morgan work start air of the World Dwelling Predicament sooner or later of a spacewalk on Sunday, Oct. 6, 2019.
(Image credit: NASA TV)
Four extra battery replace spacewalks are currently deliberate for this month. Koch and Morgan will pair up once more for an EVA scheduled for Friday (Oct. 11), followed by spacewalks by Morgan and Meir on Oct. 16 and Meir and Koch on Oct. 21, the latter the first all-female EVA in history. The final deliberate spacewalk within the sequence shall be performed by Meir and Expedition 61 commander Luca Parmitano of the European Dwelling Company (ESA) on Oct. 25.
One other EVA, unrelated to the battery replacements, is scheduled for Oct. 31 by Russian cosmonauts Aleksandr Skvortsov and Oleg Skripochka. 5 extra U.S. spacewalks by Morgan and Parmitano are slated to prepare in November to repair the Alpha Magnetic Spectrometer (AMS) cosmic-ray detector.
Sunday’s EVA used to be both Koch’s and Morgan’s 2nd spacewalks.
Koch, who served as EV1 (or lead spacewalker) and wore the Extravehicular Mobility Unit (EMU) spacesuit with red stripes now has now logged a total of 13 hours and 46 minutes on her two spacewalks. Morgan, who as EV2 wore the suit without a identifiers, has a total of 13 hours and 33 minutes spanning his two EVAs.
This used to be the 219th spacewalk dedicated to the World Dwelling Predicament since assembly of the outpost began in 1998. Astronauts and cosmonauts hold now spent 1,374 hours and 27 minutes, or 57.3 days, working start air the orbiting advanced.
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Robert Pearlman is a Dwelling.com contributing writer and the editor of collectSPACE.com, a Dwelling.com accomplice arena and the main scrape history files publication. Practice collectSPACE on Fb and on Twitter at @collectSPACE. Practice us on Twittter at @Spacedotcom and on Fb.
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