Quote from: Ben E on 08/05/2009 12:44 pmWhat about Node-1 nadir? It's not occupied and, as far as I'm aware, unobstructed.That will be used for HTV and Dragon. Zenith is open, however.
What about Node-1 nadir? It's not occupied and, as far as I'm aware, unobstructed.
Node 1 (6 ports): forward: Destiny Lab: aft: Zarya: zenith:blocked by Z1 Truss: starboard: Quest: port: Node 3 - which could be relocated to nadir if required: nadir: PMA-3 - which could be relocated to port if required (?)Node 2 (6 ports): forward: PMA-2: aft: Destiny: zenith: free: starboard: Columbus: port: Kibo: nadir: free - but required for birthing of HTV/COTS vehiclesNode 3 (6 ports) (connected to Node 1 port option): starboard: Node 1: port: free (blocked?): nadir: Cupola (?) : forward: free - but disabled (and blocked): aft: free - but disabled (and blocked): zenith: free - but disabled (blocked?)
Isn't Quest currently at Node-1 starboard? Although it's probably the same clearance issue, in terms of distance from the radiators.
My bet is Node 1 nadir (with PMA-3 somewhere at Node-3) or Node 2 zenith, in this order.AnalystPS: With enough time a Node-3 CBM could be enabled.
Node 3 (6 ports) (connected to Node 1 port option): starboard: Node 1: port: free (blocked?): nadir: Cupola (?) : forward: free - but disabled (and blocked): aft: free - but disabled (and blocked): zenith: free - but disabled (blocked?)
Quote from: Analyst on 08/05/2009 01:20 pmMy bet is Node 1 nadir (with PMA-3 somewhere at Node-3) or Node 2 zenith, in this order.AnalystPS: With enough time a Node-3 CBM could be enabled.Isn't PMA-3 not only a spare but is going to also be used by Orion at some point for docking? If you relocate it to Node 3, could you do a docking to it?
That's Phase II of weight reduction options. These that they just incorporated on Phase I. Were not at the point of ditching the SRBs in the Atlantic just yet. The way I read the presentations was that these are item on the SRBs that they can live without on the final mission -- which is why I including the thing about the extension at the end of the article.
They should just put Tranquility on Unity nadir, Cupola on Tranquility forward, PMA-3 on Tranquility nadir and PLM on Tranquility aft...I still don't get why they changed Tranquility from Unity nadir to port... it would be more symetrical for the ISS the first option...
Thoroughly enjoyed this article. I had questions about the actions planned for the SRB's, but they were answered above. One other thing that I found interesting and didn't know was the ability to remove cryo and GN2 tanks to increase upmass, referring to the passage in the article; the STS-133 orbiter will have its 5th cryo tank set removed, as well as its 6th Gaseous Nitrogen tank, during turn-around processing in its Orbiter Processing Facility. Fascinating. I assume that this is feasible given the planned (shorter) duration of the mission. Would I be correct in assuming that the cryo tanks refer to the LOX and LH2 fuel cell reactants? And are the GN2 tanks referred to the tanks that store the N2 for the mixed-gas atmosphere or the N2 used to purge the OMS after OMS burns? Thanks.
Can I ask a really stupid one (be kind!)? Why not:Node 3 on Node 2 forward (instead of PMA 2)
Quote from: glanmor05 on 08/05/2009 06:05 pmCan I ask a really stupid one (be kind!)? Why not:Node 3 on Node 2 forward (instead of PMA 2)Node 3 umbilicals run to Node 1 and are not long enough to reach Node 2. Could be extended but would be pain in ass. Running out of time (L-6 months) for major changes. Node 3 to Node 2 option would have to show significant benefits to justify this and it does not.
Is that a replacement radiator to the left and behind the cupola?