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November 21, 2008 | Afternoon Edition |
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CBS NEWS STS-126 STATUS REPORT: 47
Posted: 11:10 AM, 11/21/08
By William Harwood
CBS News Space Analyst
Changes and additions:
SR-45 (11/20/08): Spacewalk successful; engineers run into glitch starting urine processor
SR-46 (11/21/08): Urine processing underway; crew news conference on tap
SR-47 (11/21/08): Urine processor shuts down again; troubleshooting continues
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11:10 AM, 11/21/08, Update: Urine processor shuts down again; troubleshooting continues
The new urine processor assembly aboard the international space station, a key component in a water recycling system needed to convert urine and condensate into drinking water, was re-activated early today after problems Thursday. The processor operated for about two hours and then shut itself down again. Engineers are troubleshooting error messages while the astronauts press on with other work.
"About two and a half hours ago, the urine processor assembly was reactivated so that additional data could be garnered from that device," mission control commentator Rob Navias said shortly after 10 a.m. "It ran until just a few minutes ago when it shut itself down once again after processing urine through that system. It is now under analysis as to why it shut itself down.
"But the good news is that it was activated and ran for about two hours. This is typical of a new piece of hardware, with all the software limits and various parameters of of the operation of the system that have to be fine tuned and tweaked in the early stages of its operation. The oxygen generation system in the U.S. segment of the international space station went through similar growing pains last year when it was first installed and activated. It is now up and running in good shape and the full expectation by engineers is that this is only a momentary hiccup that will be overcome through further data analysis by the ground engineers here at mission control."
In the crew's morning planning conference with mission control, Expedition 18 commander Mike Fincke was briefed on the troubleshooting and problems experienced to date and told to hold off on a planned water system task.
"The urine processor was processing and delivering to the water processor and we recently got an error message about an hour ago. We're evaluating that right now," said astronaut Terry Virts in mission control.
"OK, Terry, thanks for the update," Fincke replied. "Yeah, we saw that error message also. And you know, Terry, this is one of our highest mission priorities, so anything you guys can put in the daily summary and keep us informed during the day, we're, shall we say, a hundred percent interested in how this new water reclamation system's working for us. So thanks for the update. I understand you guys are troubleshooting and I may have to do this task later in the day, but flexibility is key, as they say."
"OK, yeah, thanks Mike, you're exactly right and we'll keep you a hundred percent informed," Virts said. "We have some more words about the UPA I can tell you."
"OK, go ahead."
"The UPA caution software, we learned some things about it last night in terms of some malfunctions that are paired up with messages that are different than we had thought originally. The UPA hazard message is one you got yesterday and it turns out that message is not critical and it's going to be suppressed on board. So you'll see it, but you won't hear it. So if you do see that, there's not going to be any actions for that."
"OK, Terry, we understand and this is just part of the normal flight test checkout process," Fincke replied. "That's why it's really good to keep us informed so we can be helpful. We also built additional time in the schedule, I think we're probably a day or two ahead of our original plan, just for such occasions to learn the nuances of the software. So thanks."
"Yeah, that's exactly right, Mike. There's another message, it's 'UPA electrical overheating safing initiated.' If you look in your event log, you'll see it down there a few hours back. But that message, we do need actions for you to do.In fact, you're going to treat it like an RPC trip and do the same thing that you did yesterday when you had that 'UPA hazard' message."
An RPC, or remote power controller, is a sort of circuit breaker and when a trip occurs, the astronauts must run tests to make sure nothing overheated or posed a fire hazard.
While troubleshooting proceeded on the ground, shuttle commander Christopher Ferguson and pilot Eric Boe geared up to fire Endeavour's maneuvering rockets to boost the station's altitude slightly. The reboost maneuver was expected at 12:10 p.m.
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Quick-Launch Web Links:
CBS News STS-126 Status Reports:
http://www.cbsnews.com/network/news/space/current.html
CBS News STS-126 Quick-Look Page:
http://www.cbsnews.com/network/news/space/currentglance.html
NASA ISS Expeditions Page:
http://www.nasa.gov/mission_pages/station/expeditions/index.html
NASA Shuttle Web: http://spaceflight.nasa.gov/shuttle/index.html
NASA Station Web: http://spaceflight.nasa.gov/station/index.html
Spaceflight Now: http://spaceflightnow.com/index.html
GoogleSatTrack: http://www.lizard-tail.com/isana/tracking/
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Hack WordPress |
| How To: Display WordPress Categories without Children Posted: 21 Nov 2008 02:00 AM CST About a week ago I decided I was unhappy with the archives plugin I was using to display our archives, so I decided to build a custom archives page. This archives page is fairly basic in that it displays the categories and archives side-by-side, then all the posts below it. This way people can use Ctrl+F to quickly find posts they are looking for. After getting the page built, I realized all of the “child” categories I use for the WordPress Hacks theme was causing some problems, so I decided to remove them from the display. After all, these posts can also be found in their parent category. If you are displaying your categories somewhere and would like to remove the children, here is the code you’ll need (for WordPress 2.5+):
The depth=1 is the important one for the purpose of this hack as it is what tells WordPress not to display more than your parent categories. By default, it is of course set to depth=0 (shows all categories). If you are wondering what other options you have, here is what the WordPress Codex lists for the depth parameter:
Related posts:
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| Will the WordPress 2.7 Core Update Feature Work With My Web Host? Posted: 20 Nov 2008 03:38 PM CST One of the most anticipated new features with WordPress 2.7 is the new core update feature which will automatically update your WordPress installation, removing the tedious process of installing the software yourself or waiting for Fantastico to update with the latest version of WordPress. However, this new feature is not necessarily compatible with every web host, so it looks like the WordPress community has created a very nice list of Web Hosts that the Core Update Feature is Compatible With. It probably won’t affect whether you upgrade or not, but you can check this list to confirm your web host is included. Related posts:
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| What Plugins Are Compatible With WordPress 2.7? Posted: 20 Nov 2008 03:08 PM CST Due to the number of changes in WordPress 2.7, it is likely that once it is released, a number of people will quickly upgrade only to find that there theme is now broken or some plugin they rely upon no longer works correctly. Fortunately, thanks to the availability of WordPress 2.7 beta, many plugin authors have gotten a jump on making their popular plugins compatible (or were able to confirm their plugins work fine with WordPress 2.7), and have been compiling a huge list of WordPress plugins which have been confirmed to be compatible with WordPress 2.7. If you plan to upgrade around release time, you’ll first want to determine which plugins you can’t live without and verify they are all included on this list. If any aren’t on that list that you need, you’ll want to hold off on upgrading. Note: You can now also confirm compatibility of some WordPress themes as well. Related posts:
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