Author Topic: ATK train with SRB segments crashes again  (Read 49653 times)

Offline Lee Jay

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RE: ATK train with SRB segments crashes again
« Reply #100 on: 05/15/2007 09:52 PM »
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George CA - 14/5/2007  9:29 PM

It'll of been a beefed up version of this.

Yeah...that's what I expected.  But I was expecting them to have to complete some track repairs first.  That's why I was surprised that they got it done so quickly.

Offline Justin Space

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Re: ATK train with SRB segments crashes again
« Reply #101 on: 05/20/2007 08:31 PM »
Good to read that all the segs will be out of there this weekend.

Offline shostetler

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RE: ATK train with SRB segments crashes again
« Reply #102 on: 05/27/2007 06:26 PM »
This is what we refer to as a cornfield meet, where 2 trains hit out in the field together headon. At the start of the video, there is a signal with 2 yellow lights, meaning they are going into the siding ahead to meet another train. At the siding, the train they are meeting fails to stop, and was doing 38mph when they hit the train with the camera. The signal into the siding was red over green, meaning to take the siding, but when the other train fails to stop, it drops all red on them. I had to share this, beings this is what my job entails. We had a nice little briefing at work where they played this tape for us, and showed us the aftermath. Talk about one heck of a wakeup call.


Offline vt_hokie

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RE: ATK train with SRB segments crashes again
« Reply #103 on: 05/27/2007 08:03 PM »
Yikes!  Thank goodness nobody was killed that time.  Reminds me a little of the Chase, Maryland disaster in '87, where a string of Conrail engines ran through a red signal onto the main and into the path of a 125 mph Amtrak train.  16 people died in that accident, which brought about several changes on the Northeast Corridor, including the requirement for cab signals on all equipment, freight or passenger.

Offline publiusr

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Re: ATK train with SRB segments crashes again
« Reply #104 on: 06/01/2007 08:32 PM »
The worst thing I have ever seen was one car that had telescoped into the other. No room for the occupants. I'd rather be atop an R-7 on fire.

Offline STSFan10

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Re: ATK train with SRB segments crashes again
« Reply #105 on: 06/12/2007 04:40 AM »
Has this been cleared since? That's why I'm bumping :)
"Damn it's good to be a Cylon.....There ain't no Earth anyway."

Online Chris Bergin

Re: ATK train with SRB segments crashes again
« Reply #106 on: 06/12/2007 11:23 PM »
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STSFan10 - 12/6/2007  5:40 AM

Has this been cleared since? That's why I'm bumping :)

I don't know about the site, but the booster segs are all back where they should be now.

Offline krausso

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Re: ATK train with SRB segments crashes again
« Reply #107 on: 06/13/2007 04:19 AM »
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Jim - 6/5/2007  6:26 AM

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JayP - 5/5/2007  11:13 PM

If I remeber correctly, there are 11 segments per motor, not 8. There are 2 segments each in the forward, forward center, and aft center sections and 5 in the aft section. That would mean that there are 28*22=616 casing segments toatal. Also, assuming that the redesign after 51-L ment scrapping the existing segments, (i'm assuming here, I could be wrong) that means that each segment has only flown an average of 3 times over the entire program. I've always wondered exactly how "reusable" these motors are.

There are 2 casings that makeup a segment (the aft does not use 5).  Only 4 segments make up an SRM.  
51-L did not require scrapping of existing casings.  the new casings were only needed for the field joints, the old casings could be uses for the factory joints

There are two cases that make up a segment for the forward, forward center, and aft center. The aft segment is actually three cylinders and is not identical to the cylinders used in the other segments.

Offline Stowbridge

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Re: ATK train with SRB segments crashes again
« Reply #108 on: 07/16/2007 04:39 PM »
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Chris Bergin - 12/6/2007  6:23 PM

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STSFan10 - 12/6/2007  5:40 AM

Has this been cleared since? That's why I'm bumping :)

I don't know about the site, but the booster segs are all back where they should be now.

No problems for STS-120 and 122 is the outcome?
Veteran space reporter.

Offline Danny Dot

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RE: ATK train with SRB segments crashes again
« Reply #109 on: 07/16/2007 07:56 PM »
Do the SRB segments have to go back to Utah between each flight?  Is the propellant poured in Utah?

Danny Deger
Danny Deger

Offline Jim

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RE: ATK train with SRB segments crashes again
« Reply #110 on: 07/16/2007 08:08 PM »
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Danny Dot - 16/7/2007  3:56 PM

Do the SRB segments have to go back to Utah between each flight?  Is the propellant poured in Utah?

Danny Deger

yes and yes

Online Chris Bergin

Re: ATK train with SRB segments crashes again
« Reply #111 on: 07/17/2007 12:27 AM »
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Stowbridge - 16/7/2007  5:39 PM

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Chris Bergin - 12/6/2007  6:23 PM

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STSFan10 - 12/6/2007  5:40 AM

Has this been cleared since? That's why I'm bumping :)

I don't know about the site, but the booster segs are all back where they should be now.

No problems for STS-120 and 122 is the outcome?

All seems well as per ATK Quick Looks on L2.

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