Author Topic: STS-119 Processing Latest (Read 7435 times)

whitewatcher · « **on:** 02/05/2008 02:25 pm »

They are doing something with the remaining truss segment (and have pointed a webcam on it). Maybe they're going to mount the solar wings.

nathan.moeller · « **Reply #1 on:** 02/05/2008 06:32 pm »

I'm pretty sure the SAWs are already mounted. I can see them on the lower side of the truss.

MKremer · « **Reply #2 on:** 02/05/2008 07:21 pm »

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whitewatcher - 5/2/2008 9:25 AM

They are doing something with the remaining truss segment (and have pointed a webcam on it). Maybe they're going to mount the solar wings.

Battery replacements most likely, especially if each one of the SAWs are removed then replaced.

eeergo · « **Reply #3 on:** 02/05/2008 07:44 pm »

Indeed, it was a battery changeout. A few very interesting images have been posted in KSC Gallery:

Orbiter · « **Reply #4 on:** 03/09/2008 02:22 pm »

So thats what that thing was when i went to the KSC in September. Anyway, I belive yes, they are installing the Solar Pannels, and also I think they may do some test's on it. [EDIT] No, there just doing test's on it.

ShuttleDiscovery · « **Reply #5 on:** 03/09/2008 02:56 pm »

That truss has been sitting there for ages!

refsmmat · « **Reply #6 on:** 03/30/2008 04:38 am »

re today's article on future mission flows, what is a "multi-stage de-orbit" in the context of contingency return with S6 still onboard? Is this a kind of skip re-entry to reduce peak heating?

Jamie Young · « **Reply #7 on:** 03/31/2008 01:23 am »

They were saying on L2 that this is something they can do for large payloads still in the orbiter and the need to return to earth.

daj24 · « **Reply #8 on:** 03/31/2008 03:44 pm »

As a follow up to refsmmat question:

From today's (31-3-08) headline. (Lots of information crammed in this one. A great read! Thanks Chris!) Can someone detail what this statement is describing?

"STS-119 is performance critical (S6 truss). Team determined that for contingency payload return, they were able to implement multi-stage de-orbit and gain 500 pounds of mass in the middeck, which helps Station."

Sounds like if they have to down mass the S6 truss they are planning on some weight mitigation via a non-normal de-orbit burn. How will this affect the middeck and how will that help the Station (ISS I assume).

TIA.

nathan.moeller · « **Reply #9 on:** 03/31/2008 04:10 pm »

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refsmmat - 29/3/2008 11:38 PM

re today's article on future mission flows, what is a "multi-stage de-orbit" in the context of contingency return with S6 still onboard? Is this a kind of skip re-entry to reduce peak heating?

You'll still encounter pretty normal peak heating temperature ranges. The goal of a multi-stage DOB is to reduce the weight/structural loading on the orbiter as much as possible. S6 weighs 17.5 tons, or around 35,000 lbs. Discovery is going to be at her limit with the payload in her bay as it is, so if something goes wrong between launch and the time they're supposed to dock with ISS and requires a return home, weight mitigation will play a critical role in bringing the orbiter and crew home safely.

Orbiter · « **Reply #10 on:** 04/01/2008 09:38 pm »

How are they going to fix the SARJ issue in time for STS-119, we cant have two Solar pannels not facing the sun.

ShuttleDiscovery · « **Reply #11 on:** 04/01/2008 09:44 pm »

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Orbiter - 1/4/2008 10:38 PM

How are they going to fix the SARJ issue in time for STS-119, we cant have two Solar pannels not facing the sun.

Says who? I mean, when STS-124 arrives delivering Kibo we will still have 3 arrays, and then after that we wont have many more modules delivered in the next year or so. If SARJ is not fixed before STS-119, I'm sure those (2) starboard arrays, even in a locked position, would provide enough power to the JEM EF on STS-127. So I think we will be OK in terms of the near future. But it will have to be sorted out eventually...

Orbiter · « **Reply #12 on:** 04/02/2008 10:40 pm »

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ShuttleDiscovery - 1/4/2008 5:44 PM
Quote
Orbiter - 1/4/2008 10:38 PM How are they going to fix the SARJ issue in time for STS-119, we cant have two Solar pannels not facing the sun.
Says who? I mean, when STS-124 arrives delivering Kibo we will still have 3 arrays, and then after that we wont have many more modules delivered in the next year or so. If SARJ is not fixed before STS-119, I'm sure those (2) starboard arrays, even in a locked position, would provide enough power to the JEM EF on STS-127. So I think we will be OK in terms of the near future. But it will have to be sorted out eventually...

Agreed.

whitewatcher · « **Reply #13 on:** 04/03/2008 06:45 am »

The Hab and the CAM have been cancelled. To there's an energy over-production on the american side. They sold the energy to the russians in order to remove another shuttle flight from the assembly sequence (russian SPF).