Right. Would this be as a replacement for both PMA2 and PMA3?
Any idea as to LV - I guess it would be too wide to be launched atop Orion. Is this something that could be flight ready by the end of STS or go up in the HTV unpressurised section. (I think this was mentioned in an 8th floor update).
Learned the answer today. PMA-3 (later CDA) will go to N2z.
Quote from: Jorge on 09/16/2009 09:51 pmLearned the answer today. PMA-3 (later CDA) will go to N2z.With PMA-3 at Node-2 zenith you lose the backup CBM for visiting vehicles (unless a Node-3 CBM could be used, which I don't know). But you have two PMAs at useable locations at a time when you don't need any PMA (from the end of STS to Orion, 7 years).Wouldn't it be better to have two CBMs for visiting vehicles (Node 2 nadir and zenith) at a time when such flights will happen (HTV, COTS) and just one PMA (like today) when none is actually needed? Put PMA-3 at Node-3 until needed.
Quote from: arkaska on 09/14/2009 09:52 pmHad no idea Z1 had an pressurized vestibule, always heard is completely unpressurized. I remember this coming up before. It is known as the Z1 Dome, if I recall. At one point, someone posted pics of the dome area here.Still trying to find interior images. No luck yet.
Had no idea Z1 had an pressurized vestibule, always heard is completely unpressurized.
Quote from: YesRushGen on 09/15/2009 04:03 pmQuote from: arkaska on 09/14/2009 09:52 pmHad no idea Z1 had an pressurized vestibule, always heard is completely unpressurized. I remember this coming up before. It is known as the Z1 Dome, if I recall. At one point, someone posted pics of the dome area here.Still trying to find interior images. No luck yet.I've got two images of Sergei Krikalev accessing the pressurized volume of Z1 but I don't remember if they are L2 are not (Chris, please advise)
Those pics are available on the NASA website.http://www.nasa.gov/images/content/118032main_hassman_iss_briefing4_med.jpg
Quote from: simon-th on 09/18/2009 07:59 amThose pics are available on the NASA website.http://www.nasa.gov/images/content/118032main_hassman_iss_briefing4_med.jpgHuh, thanks. So what is that used for these days? Storage?
NASA managers originally intended to attach Tranquility to Unity's Earth-facing port but later decided to mount it on the left side instead. Connectors needed to circulate ammonia coolant to and from Tranquility were not correctly positioned, or "clocked," for Tranquility to be attached to Unity's left-side port.As a result, custom hoses and connectors were ordered to compensate for the offset. During a ground test this week, a hose ruptured below the expected threshold. The failure occurred at a pressure of nearly 1,000 pounds per square inch, much higher than normal station pressures of around 300 psi, but engineers are looking into the issue to find out what might be needed to resolve the matter.
http://www.nasaspaceflight.com/2010/01/sts-130-may-postponed-node-3-threatens-swap/I thought NASA tested everything to a fair-the-well. What happened that they would discover this at the last minute?
OMG I thought NASA tested everything to a fair-the-well. What happened that they would discover this at the last minute?
I seem to remember that Node 3 and Cupola were to be moved to the Nadir port of Node 2 is that still happening or did I miss something?
Why didn't they put Node 3 at Node 2 forward?
Quote from: Pheogh on 03/16/2010 11:06 pmI seem to remember that Node 3 and Cupola were to be moved to the Nadir port of Node 2 is that still happening or did I miss something?That was never the plan. Node 3 was originally planned to be berthed to Node 1 nadir. I don't believe there are any plans to relocate it.
That is Node 1 nadir.