nasa astronauts tackle urgent spacewalking repairs - absorbent pads for food packaging

by:Demi     2019-09-08
nasa astronauts tackle urgent spacewalking repairs  -  absorbent pads for food packaging
Cape canaveral, Florida.
-On Saturday, astronauts removed an old space station pump and restored a damaged cooling pipe line through a series of emergency repairs to the first in the spacewalk.
Crew Rick Mastracchio and Michael Hopkins two Americans successfully pulled the ammonia pump out with a bad valve---
Much ahead of schedule.
The mission was planned for Monday's next spacewalk.
"Earlier in Christmas," Mastracchio observed mission control by dragging the refrigerator --
Size pump away from nesting point.
If Mastracchio and Hopkins continue to work quickly, two spacewalks may be enough to complete the installation of the spare pump, and a third spacewalk is not required for Christmas as originally expected.
The failure 10 days ago caused one of the two identical cooling loops to be too cold, forcing astronauts to close all non-essential equipment in the orbital lab and bring scientific research to the vicinity
Stop and leave the station in a fragile state.
Mission Control wants space walkers to stay longer on Saturday to make more progress, but a cold and uncomfortable Mastracchio asks to go back.
The spacewalk ended after 5 1/2 hours, an hour short, but the content was satisfactory.
Earlier, Mastracchio managed to relatively easily unlock all ammonia fluids and wires on the pump, and occasionally released a series of frozen ammonia flakes painted on the suit. A small O-
But he managed to get the ring back.
"I got it. I got it. I got it.
"Almost no," said Mastracchio, reaching out.
"Don't let it go, it's a sock thing," replied the task control center . ".
"Don't tell my wife," Mastracchio said with a smile . " He put it in a small bag with rubbish.
Mastracchio, seven
Spacewalker and Hopkins wear extra safety gear when they first work outside.
NASA wants to prevent the helmet flooding that almost drowned astronauts last summer from happening again, so space walkers on Saturday were snorkeling in suits and water --
Helmet in are absorbent pads
To everyone's relief, the people walking in space are still dry.
But in the middle of the trip, Mastracchio's toes were cold and he had to turn up the heat in his boots.
The mission control center is worried loudly about whether it is wise to extend the space walk for success, given Mastracchio's discomfort.
Less than two hours later, when Mastracchio grabbed the old pump, he had enough.
When task control suggests more get-
Before doing the housework, he replied, "I want to store this old module, clean it up and do it in a day.
"He said there were a few things that bothered him, not just the temperature problem, and he refused to elaborate when task control asked him what was wrong.
The flight controller forced him to do so.
Once the old pump is fixed to a temporary position, the spacewalker begins to collect the tools to enter.
260 miles away, the smoke alarm in the space station sounded as astronauts worked hard outside.
It was soon discovered as a false alarm.
Pump replacement is a huge business, as early as 2010, tried once on this device.
Two astronauts who completed the work three years ago provided guidance in mission control.
Mastracchio promises to bring back the wires that used to be installed on the pump by space walkers.
"Oh, that's great, thank you Rick," replied the mission-controlled astronaut wearing it. The 780-
The pound pump is about the size of a pair.
Door Refrigerator and extremely cumbersome handling, full of toxic ammonia pipes.
To avoid further contamination, any traces of ammonia on the spacecraft were dissipated before the astronauts returned to space.
NASA's plan initially required to disconnect the pump on Saturday, exit on Monday, and put in a new standby, and then, all connections to the new pump were completed on Wednesday, it will be the first Christmas spacewalk ever.
But if the work is done on Monday, the third spacewalk will be unnecessary and most of the people on the team will be on vacation.
In the days after December
Faulty, the flight controller tried to fix the bad valve by remote command but failed.
They then made some success by trying to use different valves to adjust the temperature of the subcooled loop.
But on Tuesday, NASA said the situation was serious enough to push the space walk.
Despite the safety and comfort of the astronauts, NASA does not want to risk another failure and potential loss of the entire cooling system, as this requires radiation on-Board equipment.
NASA delayed the delivery of the mission from the island of Wallops in Va.
To adapt to space walking.
The flight of Orbital Science.
What should have happened in the past week, and now the target is January. 7.
Until Saturday, AmericaS.
The spacewalk has been on hold since July, when an Italian astronaut's helmet was flooded with water in his clothes cooling system.
Luca palmitano hardly came back alive.
The engineer traced the problem back to the contaminated equipment in the suit. -
No one knows how and why.
On Saturday's spacewalk, Hopkins was wearing a Parmitano suit, although the fully tested components were newly installed.
Just in case, NASA had Mastracchio and Hopkins build snorkeling with plastic pipes on suits before going out.
Snorkeling will be used if the water starts to pile up in the helmet.
They also put water suction pads in their helmets;
After the panic of July, the launch pad was launched from Earth.
Apart from two Americans, three Russian astronauts and one Japanese astronaut live on the space station.
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