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  #61 (permalink)  
Old 22-September-2006, 07:28 AM
1blue 1blue is offline
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Default Hubble retired?

And when wil be Hubble retired?
Because it is soon end of "his" life in space
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  #62 (permalink)  
Old 22-September-2006, 01:15 PM
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And when wil be Hubble retired?
Because it is soon end of "his" life in space
Hi 1blue, welcome to the BAUT forum.

Presuming that the Hubble Space Telescope manages to keep its gyros healthy enough to get to the next servicing mission, it should stay in operation for another five to ten years after that. The limiting factor will be that at some point, the new gyros we put in will fail, and before it is completely uncontrollable, it will need to be deorbited.
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  #63 (permalink)  
Old 19-October-2006, 07:56 PM
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NASA sets Hubble Servicing Mission D-Day

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NASA has set the date for their meeting to officially approve STS-125 - better known as the final Hubble Space Telescope servicing mission.

While HSM-04 is pretty much a lock-in, the 27th of October meeting will also be an opportunity to discuss the potential of moving the mission up into 2007, along with evaluating LON (Launch On Need) requirements, should NASA decide on having an ambitious rescue mission on stand-by.
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  #64 (permalink)  
Old 20-October-2006, 08:01 PM
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Mission to Save Hubble Could Put Astronauts at Risk

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Hope for NASA's celebrated Hubble Space Telescope, which has produced some of the most spectacular images of the universe, hinges on an engineering meeting to analyze the risks of a shuttle mission to repair its aging systems. The meeting is scheduled for Friday, Oct. 27, and the person who will decide whether the mission takes place is NASA administrator Michael Griffin.

What engineers are wrestling with, though, is the rescue plan. If something goes wrong on a shuttle flight to fix Hubble, could the crew be saved?
In other breaking news, researchers find that driving to work puts commuters at risk.
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  #65 (permalink)  
Old 20-October-2006, 08:46 PM
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True, but you're average commuter in destress can expect a rescue within 20 minutes to an hour, depending on severity.

Even a distressed ship in foul weather can expect a Coast Guard rescue within a reasonable amount of time, provided they have a reliable means of communication.

A shuttle up the creek is more comparable to a disabled submarine in terms of situational complexity.


Not saying its not worth taking the chance to get the job done, but its hardly a jaunt around the Capitol Beltway, despite the traffic we Marylanders inflict on one another.
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  #66 (permalink)  
Old 23-October-2006, 12:49 PM
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Mission to Save Hubble Could Put Astronauts at Risk
In other breaking news, researchers find that driving to work puts commuters at risk.
Although I agree with that commentary, any more losses, and American public opinion would generally kill NASA. I don't think that the U.S. population believes in acceptable risk anymore.
Anyway; I can see their point:
"You can't get to the station from a Hubble orbit. It is physically impossible," he said.
Although; they do have the solution, it will increase the cost.
Engineers at NASA are considering prepping two shuttles in parallel, with the second shuttle waiting on the other launch pad
Overall; I vote they go. We are not going anywhere in space without taking some risks.
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Old 23-October-2006, 01:11 PM
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Overall; I vote they go. We are not going anywhere in space without taking some risks.

Astronauts know the risks, if they are ok stepping up into the cabin, I'd say it should be flown.
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  #68 (permalink)  
Old 23-October-2006, 01:45 PM
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Originally Posted by NEOWatcher View Post
Although I agree with that commentary, any more losses, and American public opinion would generally kill NASA. I don't think that the U.S. population believes in acceptable risk anymore.
Anyway; I can see their point:
"You can't get to the station from a Hubble orbit. It is physically impossible," he said.
Although; they do have the solution, it will increase the cost.
Engineers at NASA are considering prepping two shuttles in parallel, with the second shuttle waiting on the other launch pad
Overall; I vote they go. We are not going anywhere in space without taking some risks.
The sickening thing is, the second shuttle will be as window constrained as the first. I'm not sure what the available windows are for Hubble interface orbits, but it could be a bit of a wait for a team in a stranded shuttle.

Even worse, there's nothing to say a second shuttle can't be hurt worse than the bird its supposed to rescue...
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  #69 (permalink)  
Old 23-October-2006, 01:59 PM
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I'm just bemused at the fact that the shuttle has flown such missions about a hundred times now (i.e., every shuttle mission not to the space station), but suddenly they verge on being too dangerous even to consider.
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  #70 (permalink)  
Old 23-October-2006, 04:49 PM
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I'm just bemused at the fact that the shuttle has flown such missions about a hundred times now (i.e., every shuttle mission not to the space station), but suddenly they verge on being too dangerous even to consider.
Isn't it amazing what public opinion does?

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Originally Posted by Doodler
The sickening thing is, the second shuttle will be as window constrained as the first. I'm not sure what the available windows are for Hubble interface orbits, but it could be a bit of a wait for a team in a stranded shuttle.
The most likely disaster is if the shuttle can not re-enter. In that case the wait is not a problem.
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  #71 (permalink)  
Old 23-October-2006, 09:40 PM
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I'm just bemused at the fact that the shuttle has flown such missions about a hundred times now (i.e., every shuttle mission not to the space station), but suddenly they verge on being too dangerous even to consider.
Heh, its the difference between flying ignorant of the danger, or well aware of it. The risk isn't any greater, we're just more aware of the fact they are in danger.

I'm still very much in the "Go" category, but I understand the risks, even flying the old system, were still not so severe as it is sometimes presented.
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  #72 (permalink)  
Old 24-October-2006, 03:15 AM
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I'm just bemused at the fact that the shuttle has flown such missions about a hundred times now (i.e., every shuttle mission not to the space station), but suddenly they verge on being too dangerous even to consider.
They now consider the possiblity of damage to the orbiter that would prevent safe reentry quite a bit more likely now then they did then.

Just how likely one thinks a mission is likely to kill the crew is certainly a rational basis for considering how dangerous something is and whether or not it is worth the risk.

Now whether or not the probabilities back was accurate or the current one is accurate is something can be argued. I comes down to whether or not post-Columbia improvements can be trusted and what degree of danger can be accepted for any particular mission.

Maybe we should state what percent chance of the crew dying are we willing to accept. That is a hard decision.


Or course we would not be in this position if NASA had not delayed so long. It is shameful that there is not already a second "Hubble" up there.
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  #73 (permalink)  
Old 31-October-2006, 05:28 PM
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Hubble Saved: NASA Approves Shuttle Flight to Service Space Telescope

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Hubble-bound shuttle astronauts have a daunting task ahead of them. Their tasks include:

* The installation of Wide Field Camera-3, a new camera to amplify Hubble’s vision.
* The replacement of Hubble’s batteries, some thermal insulation and a broken guidance sensor.
* Refurbishment of the Hubble’s vital attitude controlling gyroscopes used to orient the space telescope. Only two of the six are in operation. Two are held as spares while two others are broken.
* The installation of the Cosmic Origins Spectrograph and unprecedented repair of Hubble’s Space Telescope Imaging Spectrograph (STIS), which was never designed to be worked on in space.
* Using the shuttle’s engines to boost Hubble into a slightly higher orbit.
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  #74 (permalink)  
Old 31-October-2006, 05:29 PM
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New Hubble instruments would illuminate early universe

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WFC3's sensitivity and wide field of view would make it 15 to 20 times more efficient at searching for faint, distant galaxies than Hubble's Near Infrared Camera and Multi-Object Spectrometer (NICMOS), which has previously been used for this sort of work.
...
COS would be especially useful for studying the gas that floats between galaxies, Niedner says. This would help astronomers survey the diffuse gas in space and understand how star formation and supernovae have affected it. The instrument would also help astronomers study developing stars.
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  #75 (permalink)  
Old 01-November-2006, 03:21 AM
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A great day for discovery and world science.

Must be an election year lol
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  #76 (permalink)  
Old 01-November-2006, 07:58 AM
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Default Re; Hubble servicing mission 4 status (title edited)

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A great day for discovery and world science.
Agreed.
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Must be an election year lol
How could you tell?
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  #77 (permalink)  
Old 01-November-2006, 11:04 AM
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Does someone know what the soft capture mechanism on Hubble’s aft end is used for?
I thought this will be the last service mission, so why do they install a capture mechanism?
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  #78 (permalink)  
Old 01-November-2006, 11:45 AM
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Maybe in order to attach a deorbit tool if ever needed?
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  #79 (permalink)  
Old 01-November-2006, 04:24 PM
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I don't think there are any plans any more to install a capture mechanism. Since Griffin thinks sending up a propulsion module to deorbit Hubble is "idiotic", and there won't be any more servicing missions, there's no point.
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