Author Topic: ATK train with SRB segments crashes again (Read 55907 times)

Jim · « **Reply #80 on:** 05/05/2007 01:55 pm »

The mechanical interfaces with the SRB's has nothing to do with 'matching" or interchangability. It has to do with the propellant pour. The same segments rarely, if at all, fly together.

Lee Jay · « **Reply #81 on:** 05/05/2007 02:28 pm »

I think all eight segments were destroyed on 51L by range safety, correct? Another set sank, though I forget which flight. Roughly how many others are in existence?

Jim · « **Reply #82 on:** 05/05/2007 02:52 pm »

28 shipsets

Lee Jay · « **Reply #83 on:** 05/05/2007 03:07 pm »

I hope "shipsets" means 2 SRBs worth like on this train. In that case 28*8=224 segments. Thanks Jim!

Chris Bergin · « **Reply #84 on:** 05/05/2007 04:51 pm »

Recovery going well.

One or both of the Locos have been righted back on to the tracks, and they weigh more than the cars with segs, so they will be capable of doing likewise with all of the train.

Chris Bergin · « **Reply #85 on:** 05/05/2007 04:54 pm »

By the way, this is the train in question (when it's doing what it should be):

spaceflight101 · « **Reply #86 on:** 05/05/2007 05:29 pm »

Any "rumbles" as to a possible affect on the schedule? Murphy definitely needs to take a vacation far, far away from NASA things...or else we're going to be talking about 2011.

shostetler · « **Reply #87 on:** 05/05/2007 05:38 pm »

Quote

spaceflight101 - 5/5/2007 12:29 PM

Any "rumbles" as to a possible affect on the schedule? Murphy definitely needs to take a vacation far, far away from NASA things...or else we're going to be talking about 2011.

2011? or the axing of more modules..

Gary · « **Reply #88 on:** 05/05/2007 05:47 pm »

Quote

Lee Jay - 5/5/2007 3:28 PM

I think all eight segments were destroyed on 51L by range safety, correct? Another set sank, though I forget which flight. Roughly how many others are in existence?

I think it was STS-3 or STS-4 - Certainly one of the early flights both SRB parachute systems failed and the boosters were lost.

Jim · « **Reply #89 on:** 05/05/2007 05:53 pm »

Quote

shostetler - 5/5/2007 1:38 PM

Quote
spaceflight101 - 5/5/2007 12:29 PM

Any "rumbles" as to a possible affect on the schedule? Murphy definitely needs to take a vacation far, far away from NASA things...or else we're going to be talking about 2011.

2011? or the axing of more modules..

No more modules can be removed. But first this will not affecdt 2010

JayP · « **Reply #90 on:** 05/06/2007 03:13 am »

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.

astrobrian · « **Reply #91 on:** 05/06/2007 05:43 am »

That is an average. The average flights per year haven't achieved the original goal either after 51-L so that plays a part.

Jim · « **Reply #92 on:** 05/06/2007 12:26 pm »

Quote

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

Chris Bergin · « **Reply #93 on:** 05/08/2007 07:29 pm »

All cars now righted and back on the track.

Lee Jay · « **Reply #94 on:** 05/08/2007 07:37 pm »

That was fast. Anyone know what type of equipment they used to lift the cars?

Orbiter Obvious · « **Reply #95 on:** 05/15/2007 01:30 am »

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Lee Jay - 8/5/2007 2:37 PM

That was fast. Anyone know what type of equipment they used to lift the cars?

A very big crane

MKremer · « **Reply #96 on:** 05/15/2007 02:39 am »

With the weight of those locomotives probably several big cranes.

Lee Jay · « **Reply #97 on:** 05/15/2007 02:43 am »

We're talking about a swamp that couldn't support even the rails. Was the crane on the undamaged tracks? It wouldn't be easy to get a mobile crane out there and then find stable ground on which to put it.

George CA · « **Reply #98 on:** 05/15/2007 03:29 am »

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

Chris Bergin · « **Reply #99 on:** 05/15/2007 09:40 pm »

The latest is that the four segements that are not going to KSC will start transfering on Saturday to good railroad cars - at the rate of one segment per day. Segments will then head to Utah.