Space Station Saved By a Toothbrush?

Hugh Pickens writes "Denise Chow reports that two spacewalking astronauts successfully replaced a vital power unit on the International Space Station today, defeating a stubborn bolt that prevented the astronauts from properly installing the power unit on the ISS's backbone-like truss with the help of some improvised tools made of spare parts and a toothbrush. Astronauts Sunita Williams and Akihiko Hoshide started by removing the power box, called a main bus switching unit (MBSU), from where it had been temporarily tied down with a tether, then spent several hours troubleshooting the unit and the two bolts that are designed to secure it in place on the space station's truss. After undoing the bolts, the spacewalkers examined them for possible damage, and used improvised cleaning tools and a pressurized can of nitrogen gas to clean out the metal shavings from the bolt receptacles. 'I see a lot of metal shavings coming out,' Hoshide said as he maneuvered a wire cleaner around one of the bolt holders. Williams and Hoshide then lubricated a spare bolt and manually threaded it into the place where the real bolt was eventually driven, in an effort to ensure that the receptacle was clear of any debris. Then the two applied grease to the sticky bolt as well as extra pressure and plain old jiggling until finally 4½ hours into the spacewalk, Hoshide reported: 'It is locked.' When Hoshide reported that the troublesome bolt was finally locked into place, the flight managers erupted in applause while astronaut Jack Fischer at Mission Control told the astronauts 'that is a little slice of awesome pie.'"

Comments

This is why we need people in space

[jmorris42]

And this is why robots aren't going replace people anytime soon. One little thing goes wrong with an unmanned mission and either a major subsystem is written off or the entire mission is a failure. People are able to do thigs robots aren't going to be able to do for quite a while longer. And it gets even worse as soon as you go beyond full duplex radio range. If you have to send a command, wait for a result, try something else, repeat until you scream, things get really slow the second you aren't executing preplanned directions without errors.

And people can perform physical actions we have yet to build a robot to do reliably. Sure they can put thousands of bolt on one after another on an assembly line but how many could deal with this one stuck bolt? None. Now try to build one that can open up a panel and troubleshoot wiring or plumbing.

Re:This is why we need people in space

[crmanriq]

You are missing the obvious difference:

Robots don't use toothbrushes.

Notoriously poor dental care. It's almost like robots are, um, ... British.

Why do you think the cybermen just use speakers? And the daleks hide inside their little trash cans?

Re:This is why we need people in space

[CheeseTroll]

Perhaps, but a robot wouldn't have had a toothbrush in space, would it?

Re:This is why we need people in space

[stepho-wrs]

Except you are solving a known problem, after it happened.
It's much harder to solve problems before they are known.
It's much harder to build a robot that can solve unknown problems.

What might be useful though is a general purpose manipulator that can be controlled by humans on the ground.
Humans are useful because they have brains, eyes and general purpose hands, the combination of which can solve a huge number of problems.
Give the robot cameras, hands so that it can pick-up and use other tools or even non-tools (ie whatever is laying around the craft but wasn't explicitly designed as a tool) and a link to a human controller.

Spare?

[PPH]

"Williams and Hoshide reporting in commander. We have good news and bad news. We managed to clear the threads on this power unit and complete installation. That's the good news. The bad news is that the only toothbrush we could find was yours."

My faith in NASA has been restored

[sabri]

American spaceship, Russian spaceship: all fixed with toothbrush!