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  #31 (permalink)  
Old 01-February-2003, 05:35 PM
Bill S. Bill S. is offline
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Quote:
On 2003-02-01 12:24, g99 wrote:
lets keep a calm head here folks...

I was talking with my roomates about this. What will happen to the american ISS prigram? Will we send up our parts by Russia? or will we still send up the remaining shuttles?

We(me and my roomates) think they they will mothball ISS untill the new shuttle programs gets on its feet. It is sad, but i think it is for the best right now. It gives time for people to grieve and still keeps the program alive. I hate the idea that we might be stagnant for a few years, but it is better than taking the chance of another tragedy that could kill the program. I wish we could launch tomorrow, but i would rather take the safe road to the future.
I think the ISS is too expensive and too high-profile to "mothball" for any length of time. We may continue sending individual astronauts up through the Russians via Soyuz; I don't think we'll be sending shuttles up any time soon.
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  #32 (permalink)  
Old 01-February-2003, 05:36 PM
Mokele Mbembe Mokele Mbembe is offline
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[to AgoraBasta]

Exactly. Maybe this will make the politicians sit up and realize that you can't just keep cutting and cutting funding and expect things to work. Faster, Better, Cheaper rarely works.

<font size=-1>[ This Message was edited by: Mokele Mbembe on 2003-02-01 12:37 ]</font>
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  #33 (permalink)  
Old 01-February-2003, 05:36 PM
traztx traztx is offline
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Consider this: if a manned craft is damaged in an orbital mission and re-entry is impossible or dangerous, the ISS might be their only hope for survival until a rescue craft can be sent.
My prayers for the families and friends.
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  #34 (permalink)  
Old 01-February-2003, 05:37 PM
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On 2003-02-01 12:36, traztx wrote:
Consider this: if a manned craft is damaged in an orbital mission and re-entry is impossible or dangerous, the ISS might be their only hope for survival until a rescue craft can be sent.
My prayers for the families and friends.
I just wish the hell they'd taken a closer look at the starboard wing tiles before reentry. I mean, we could've fixed it up there (if indeed that's what failed.)
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  #35 (permalink)  
Old 01-February-2003, 05:39 PM
g99 g99 is offline
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I was not saying to kill the whole iss program, i just think we should wait to add any american additions unless the russian shuttles can take them up. Sorry for the cunfusion folks. Heck i am still reeling from the initial discovery this morning.
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  #36 (permalink)  
Old 01-February-2003, 05:46 PM
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On 2003-02-01 12:39, g99 wrote:
I was not saying to kill the whole iss program, i just think we should wait to add any american additions unless the russian shuttles can take them up. Sorry for the cunfusion folks. Heck i am still reeling from the initial discovery this morning.
By "Russian shuttles", surely you mean the un-reusable capsules...?

I'm reeling, too...
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  #37 (permalink)  
Old 01-February-2003, 05:49 PM
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James_Digriz James_Digriz is offline
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Quote:
On 2003-02-01 12:32, AgoraBasta wrote:
Quote:
On 2003-02-01 12:27, James_Digriz wrote:
How much money would have been enough before it would have been nobodies fault?
To make it NASA's fault, it'd take just as much as they asked but never got...

There's no way to tell if the accident was caused by monies that were not applied. If it comes out that the accident was caused by a part that was not upgraded then of course I'll be outraged and I do not discount the possibility. There's really no evidence yet to say that the accident would not have happened with maximum funding.
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  #38 (permalink)  
Old 01-February-2003, 05:52 PM
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Quote:
On 2003-02-01 12:49, James_Digriz wrote:
Quote:
On 2003-02-01 12:32, AgoraBasta wrote:
Quote:
On 2003-02-01 12:27, James_Digriz wrote:
How much money would have been enough before it would have been nobodies fault?
To make it NASA's fault, it'd take just as much as they asked but never got...

There's no way to tell if the accident was caused by monies that were not applied. If it comes out that the accident was caused by a part that was not upgraded then of course I'll be outraged and I do not discount the possibility. There's really no evidence yet to say that the accident would not have happened with maximum funding.
I concur; I think the immediate and long-term causes of this tragedy need to be sorted out before anyone starts slinging around invectives (if we need that at all).
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  #39 (permalink)  
Old 01-February-2003, 05:53 PM
g99 g99 is offline
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Doesn't the russian program have their own version of the shuttle? I thought they did.


You know, now that i have been thinking about my satement i might have been too harsh about it. I think that i was just acting on emotion and not thinking very clearly yet. I take back my satement about ISS. Maybe we can send the additions and the men throught other means. Ther reamining shuttles, unmanned craft, and other countries space programs. But i still think that we should closely study our current shuttle program and seriously think about replacing it very soon.
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  #40 (permalink)  
Old 01-February-2003, 05:56 PM
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I had high hopes for the Roton vehichle that was being developed but then the developers went out of buisness.


http://www.space.com/missionlaunches...n_liftoff.html

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  #41 (permalink)  
Old 01-February-2003, 05:56 PM
Mokele Mbembe Mokele Mbembe is offline
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I wonder if Buran is capable of being launched/docking with the ISS (remember when it was to be called Freedom? Is that still 'in effect'?)
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  #42 (permalink)  
Old 01-February-2003, 05:56 PM
David Hall David Hall is offline
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Quote:
On 2003-02-01 12:53, g99 wrote:
Doesn't the russian program have their own version of the shuttle? I thought they did.
The Russian version, the "Buran", had one unmanned flight and was mothballed afterwards. Most of the original pieces have been sold off I believe.
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  #43 (permalink)  
Old 01-February-2003, 05:57 PM
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Quote:
On 2003-02-01 12:56, Mokele Mbembe wrote:
I wonder if Buran is capable of being launched/docking with the ISS (remember when it was to be called Freedom? Is that still 'in effect'?)
Buran is, IIRC, a display bird only now. Someone please correct me if I'm wrong.
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  #44 (permalink)  
Old 01-February-2003, 06:02 PM
AgoraBasta AgoraBasta is offline
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Quote:
On 2003-02-01 12:49, James_Digriz wrote:
There's no way to tell if the accident was caused by monies that were not applied.
She was 21 years old...
Quote:
On 2003-02-01 12:56, Mokele Mbembe wrote:
I wonder if Buran is capable of being launched/docking with the ISS (remember when it was to be called Freedom? Is that still 'in effect'?)
Buran is long dead. Soyuz (non-reusable) can deliver crew and payload there, it did so a few times. I have no idea of the supply of Soyuz vehicles, though, they are built to order.

[later addition]
There are enough Soyuzes&Progresses to run this year's full program through.

<font size=-1>[ This Message was edited by: AgoraBasta on 2003-02-01 13:16 ]</font>
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  #45 (permalink)  
Old 01-February-2003, 06:30 PM
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I agree with the notion that we have invested too much money and resources into the ISS to just scrap it because of one mishap (not to downplay the severity of it, mind you). I could be wrong, but I see a delay in the program but an end.

As per the impact, as to why the Challenger seemed to hit harder than this one, I think, from what I remember, that at the time, we (Americans) had a sense of "invincibility," we had so much national pride in the shuttle program (we were still in the Cold War, and hey - we were ahead of the Russians), and we had not known any major nation-impacting disaster (the closest I had known was the attempted assassination on Pres. Reagan when I was in 5th grade - to me that had seemed so long ago as to be forgotten). Now we know we are not so invincible. I think 9/11 may have dulled the impact of the tragedy somewhat; tragedy still feels familiar, not foreign as it did in the mid-1980's.

There's also the fact that the Challenger contained a teacher and there was the emotional impact involved wih that. That is one ting that impacts me with this dhuttle flight - so many students had their hearts and souls in the science experiments going on in the shuttle. Can you imagine their marred pride and joy in this? They'll never see the final products of their designs as they should have.

I hopr this tragedy doesn't end the attempt to involve students and education in the space flight program. [img]/phpBB/images/smiles/icon_frown.gif[/img]
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  #46 (permalink)  
Old 01-February-2003, 07:03 PM
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I think the conclusions that the manned program will be canceled are overstated and premature. Common people on the street who have been interviewed are mostly repeating the same things that us space enthusiasts are saying - it is inherently dangerous, but it is still something we should do. NASA just gave a press briefing, stating they will find the cause, fix it for the future, and then move forward. NASA is circling he wagons, and the public at large seems to be with them.

It is a tragedy. Certainly there will be a detailed investigation, and caution regarding current activities. We will likely see a pause in the ISS build, because the Shuttle is the only vehicle for launching the elements. However, the Soyuz and Progress modules do travel to the ISS. The Soyuz modules are the current crew escape vehicles, and are cycled every 18 months or so. Progress resupply modules can be used to keep the crew in supplies.

I'm concerned about reboost. I think there are thruster packages on the ISS that handle that, allowing it to continue without Shuttle use. (Certainly that was the eventual plan, but I'm not sure where we are in assembly.) Assuming the thrusters can be resupplied via Progress or Soyuz, then ISS is fine. We can continue to use it via Soyuz till the Shuttle is cleared for return to flight and/or a replacement launch method is built.

Some "Space Historian" schmuck (Kenneth Zurreck?) was on talking about Columbia, and how it is the oldest shuttle. He was blaming it on that fact, and that "it has been refit several times". Um, yes, that means that it is in better shape. Yes, Columbia does not go to the ISS. This is primarily because it is the heaviest shuttle. The other shuttles were built with improvements in design. But that doesn't make Columbia a bad shuttle, just not compatible with ISS.

He also talked about the Auxiliary Power Units (APU). These are the power source used for the control surfaces on landing. He said these should be looked at and updated and replaced. He did add the disclaimer that he's not saying NASA flew a vehicle that was not flight ready, but just that he thinks these devices are old.

My projection is that the investigation will go on for some time. Right now I hear two likely possibilities - the APUs and the insulation bumping the wing on takeoff damaging the heat tiles. It will probably take some time to sort this out. However, I don't see the Shuttle Program being permanently canceled. We are still some time (numerous years) away from a replacement vehicle. I think that once an answer is found, the remaining shuttles will be cleared and resume flight. However, I doubt there will be a new shuttle built to replace Columbia. I suspect we will resume flight with the remaining three (Discovery, Endeavor, Atlantis), and NASA will work on the next generation launch vehicle to replace Shuttle by 2010 to 2015.

My concern for ISS is that a delay in continuing construction will give enough inertia for politicians to keep it from restarting. I hope not, but I'm concerned.

This just in - the President just declared that the manned space program will continue.
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  #47 (permalink)  
Old 01-February-2003, 07:16 PM
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I'm wondering now if this might not actually give a boost to plans for a shuttle replacement. Recently they were been planning to extend the shuttle program even longer and had no immediate plans for a replacement. But it's becoming clear that NASA needs something new, and this might just force them to get something on the drawing board.
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  #48 (permalink)  
Old 01-February-2003, 09:58 PM
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http://eol.jsc.nasa.gov/orbtutor/page1.htm
Quote:
The station travels from west to east on an orbital inclination of 51.6 degrees. Each orbit takes 90-93 minutes, depending on the exact altitude of the ISS. During that time, part of the Earth is viewed under darkness and part under daylight. The ISS orbital altitude drops gradually over time due to the Earth's gravitational pull and atmospheric drag. Periodic reboosts adjust the ISS orbit. As the ISS orbital altitude decays, the orbit tracks on Earth change slightly.
http://quest.arc.nasa.gov/people/jou.../10-04-00.html
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...the Interim Control Module, or what we call the ICM. This piece of International Space Station (ISS) hardware was designed to be a backup for the Russian Service Module. That has been my primary project up until now, but since the Service Module (SM) has launched and docked successfully to the ISS...

< snip >

The ICM is to serve two major purposes. The most important purpose is to periodically reboost the ISS into a higher orbit, as the ISS orbit gradually decays (begins to fall in altitude above the Earth).

Up until the time the Service Module went up, we really didn't have a way to reboost the ISS, except with the shuttle when it was docked to the ISS. The ICM has a big reboost engine and can hold lots of fuel. It also has smaller thrusters, which are used for attitude control.

The SM only has a limited amount of fuel, so the plan is to use it for reboost as little as possible, using the Russian Progress vehicles (which bring supplies to the station) to reboost when possible since they do have an engine and fuel.
Cool diagram of ISS.
http://www.spacepix.net/iss/schematic.htm
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  #49 (permalink)  
Old 01-February-2003, 10:40 PM
Axeman Axeman is offline
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Bush said "Our journey into space will go on."
http://news.bbc.co.uk/2/hi/americas/2717221.stm

Unfortunately, Buran was mothballed years ago:
http://www.buran.ru/htm/molniya5.htm
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Old 01-February-2003, 11:28 PM
WHarris WHarris is offline
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Quote:
On 2003-02-01 12:37, Bill S. wrote:
I just wish the hell they'd taken a closer look at the starboard wing tiles before reentry. I mean, we could've fixed it up there (if indeed that's what failed.)
No, there isn't the capability to do that.

And Columbia wouldn't have been able to rendevous with the ISS. It didn't have enough fuel aboard to perform the necessary orbital alterations.