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Questions about Tranquility (Node3)
I read that they moved the water recovery rack to node 3.
What else will be in node 3 ? The photos in the spaceflight seem to show an unfinished node with tons of cargo and platic wrapping (as opposed to other nodes that were shipped nice and shiny without loose pipes etc). I take it that more will be installed in the node with the remaining shuttle flights ? The US segment gained a toilet and the water recovery system. But does it have a kitchen/galley ? Will there be sleeping accomodations in node 3 ? Does node 3 have 6 CBMs like other nodes ? Or is there just the port/starboard and nadir ports ? If it has the 4 CBMs on the cylinder (nadir, aft, zenith, forward), are any of the forward/zenith/aft ports usable for a module ? (clearance with other modules for instance) At the time the shell was built for node3, was it already known that it was going to be that specific module in that specific location with that purpose, or was it built before its eventual purpose was determined ? |
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Questions about Tranquility (Node3)
On Sun, 21 Feb 2010 02:01:38 -0500, John Doe wrote:
I read that they moved the water recovery rack to node 3. What else will be in node 3 ? From ESA... http://www.esa.int/SPECIALS/node3/SEM9TFSJR4G_0.html For launch, five of the eight rack locations in Node-3 will be taken up with two avionics racks and three racks containing pallets with equipment and cargo for the ISS. The three other locations are empty. In its final on-orbit configuration, Node-3 will look slightly different. Cupola will be relocated to the Earth-facing port during the STS-130 mission. The three cargo pallet racks will be removed and returned on Shuttle flight STS-131 in March 2010. In the place of these three racks and the three empty rack locations will come six new racks that are already on the Station. These include the second Air Revitalisation System rack for air-composition monitoring and carbon dioxide removal; an Oxygen Generation System rack for oxygen and water; Water Recovery System Racks 1 and 2 for urine and water processing; a Waste and Hygiene Compartment Rack for crew waste and hygiene processing and a second treadmill. Node-3 will also be outfitted with the Advanced Resistive Exercise Device for the crew. All these racks and equipment are required since the ISS crew number was increased from three to six in the spring of 2009. Does node 3 have 6 CBMs like other nodes ? One of the CBMs was never outfitted as such and is instead being used as DEXTRE's base with a PDGF. |
#3
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Questions about Tranquility (Node3)
In article ,
John Doe wrote: I read that they moved the water recovery rack to node 3. This equipment is actually spread across two racks, out of 8 total in the Node. Overall dimensions and interior volume are the same as Node 2. What else will be in node 3 ? - Life support racks for oxygen generation (water - oxygen electrolyzer) and "atmospheric revitalization" (carbon dioxide removal). - The toilet (Waste / Hygiene Compartment, with its attached booth) was moved to Node 3, and takes another rack position. - Exercise equipment, including the ARED (Advanced Resistive Exercise Device) and T2/Colbert treadmill. It looks like ARED, at least is set up near the radial hatches, rather than in a rack position. Was the cycle ergometer from Node 1 moved over as well? - It was mentioned that Node 3 was launched with two "avionics racks" (using 2 of the 8 spaces?) I'm not sure what actual capabilities these provide. The photos in the spaceflight seem to show an unfinished node with tons of cargo and platic wrapping (as opposed to other nodes that were shipped nice and shiny without loose pipes etc). I take it that more will be installed in the node with the remaining shuttle flights? Most of what ended up inside Node 3 had already been launched on earlier flights, in order to accomodate a 6-person crew as soon as possible. Until STS-130, they had been set up in temporary locations across the US Lab and Node 2. The US segment gained a toilet and the water recovery system. These were on orbit already. But does it have a kitchen/galley ? I think there's only a microwave, or something similar for warming pre-packaged meals (in Node 1? During STS-130 the joint crew was eating lunch in there, from a fold-down table). The logistics of trying to cook anything from scratch in microgravity seem quite challenging, and ISS doesn't really have the space. Will there be sleeping accomodations in node 3 ? No, as I understand it, those (two?) sleep-station racks are staying in Node 2, which should at least be a bit quieter now that the life support equipment has been moved. Zvezda sleeps two as well, in tiny compartments near the aft hatch (each with a small window inside, same as MIR). I'm not sure where crewmembers #5 and 6 will stay. Columbus and JEM? That small "attic" logistics module on top of the Japanese lab might be a cozy place for someone to claim. Does node 3 have 6 CBMs like other nodes ? Yes, but I've heard at least two of the radial ports are "disabled," and may be permanently sealed (or, at minimum, missing their active berthing mechanisms-- I wonder if those could be installed on orbit, if there's ever a need?) Or is there just the port/starboard and nadir ports ? If it has the 4 CBMs on the cylinder (nadir, aft, zenith, forward), are any of the forward/zenith/aft ports usable for a module ? (clearance with other modules for instance) Take a look at these fly-around photos from STS-130: http://spaceflight.nasa.gov/gallery/...ndxpage75.html http://spaceflight.nasa.gov/gallery/...ndxpage76.html Node 3 zenith seems to be obstructed by the Ku-band dish on Z1, and perhaps the truss and radiators as well. This is probably one of the sealed ones-- its exterior looks different (no corner "petals"), and I don't remember seeing any sort of hatch in that spot inside. Even at the originally-planned Node 3 location (Node 1 nadir), this one would have been facing the Russian segment, where anything berthed to it would have blocked Zarya's nadir port. Node 3 forward may be usable, for some future module to squeeze in alongside the US Lab. The folded-up FGB solar panels look like they're in the way of Node 3 Aft. Maybe it could be used if that array was removed completely. PMA-3 on Node 3's port-facing axial CBM is very close to the radiators, and would need to be relocated for anything to actually dock there. For now they intend it use it only for storage, and to help shield that end of Node 3 from orbital debris. At the time the shell was built for node3, was it already known that it was going to be that specific module in that specific location with that purpose, or was it built before its eventual purpose was determined ? It was originally intended for Node 1 Nadir, with Cupola facing forward (or on Node 1 Port, in an earlier sequence) and the now-cancelled Hab module on its axial CBM, but had to be relocated because of delays in a Russian module going to Zarya nadir... hence the need for those extra-long ammonia and power extension lines installed on the recent EVA. -- Jordan. |
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Questions about Tranquility (Node3)
In article ,
Brian Thorn wrote: On Sun, 21 Feb 2010 02:01:38 -0500, John Doe wrote: ... Does node 3 have 6 CBMs like other nodes ? One of the CBMs was never outfitted as such and is instead being used as DEXTRE's base with a PDGF. Ah, I was wondering what that dark object in the center of Node 3's strange-looking Zenith "CBM" was. This photo shows a PDGF a bit clearer than most: http://spaceflight.nasa.gov/gallery/...130e012136.jpg -- Jordan. |
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Questions about Tranquility (Node3)
What was the reason to move node3 from node1-nadir to node1-port ?
Was it because they were affraid of progress/soyuz traffic docking nearby ? Seems to me that the value of the cupola is greatly wasted in its current location since it doesn't have a good view of the station and can't really see the truss segment well. Since one of the main purpose is to control the arm, wouldn't have been better to put node 2 zenit on top of node2, and put coppola on the aft facing CBM of node3 ? From such a position, they could have seen all of the truss from above and see all the way down to the aft end of the russian segment. Also, since most of the volume of the USA segment is now forward of Destiny, wouldn't it have made sense to have the additional ECLSS equipment either at node2 or connected to node2 so it would be closer to columbus and JEM ? Could they build some adaptor that would allow PMA3 to be put nadir of node1 and rotated 90° so that the shuttle could dock sideways (tail facing starboard) ? OK, since Suhuttle is retired, I guess that doesn't make sense to do anymore. From a mass point of view, is node-3 in the same ballpark as the quest airlock ? If so, then I guess putting it port side would give the station a bit more symetry in terms of centre of mass. |
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Questions about Tranquility (Node3)
On Sun, 21 Feb 2010 20:06:27 -0500, John Doe wrote:
What was the reason to move node3 from node1-nadir to node1-port ? The decision to add the PMM (formerly MPLM Leonardo) to the Station. Leonardo won't have as good MMOD protection as Node 3, so they moved Node 3 to Unity port and gave Unity nadir to Leonardo, which will benefit from being "under" the station and protected from more MMOD than Node 3. Was it because they were affraid of progress/soyuz traffic docking nearby That was also a concern until MLM arrives on 132. Then Leonardo goes on Node 1 nadir on 133. Seems to me that the value of the cupola is greatly wasted in its current location since it doesn't have a good view of the station and can't really see the truss segment well. Cupola's main purpose in life is to give views for arm operators to capture HTV, Dragon, and Cygnus. EVA observation was always gonna be iffy no matter where Cupola was situated... too many obstructions. From a mass point of view, is node-3 in the same ballpark as the quest airlock ? Launch weight of Node 3 was about twice that of Quest, although I think Quest gained some weight with lots of EVA add-ons and O2 and N2 tanks and the like. Brian |
#7
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Questions about Tranquility (Node3)
Brian Thorn wrote:
On Sun, 21 Feb 2010 20:06:27 -0500, John Doe wrote: What was the reason to move node3 from node1-nadir to node1-port ? The decision to add the PMM (formerly MPLM Leonardo) to the Station. Leonardo won't have as good MMOD protection as Node 3, so they moved Node 3 to Unity port and gave Unity nadir to Leonardo, which will benefit from being "under" the station and protected from more MMOD than Node 3. Was it because they were affraid of progress/soyuz traffic docking nearby That was also a concern until MLM arrives on 132. Then Leonardo goes on Node 1 nadir on 133. Slight correction: MLM will replace Pirs on Zvezda nadir; MRM-1 will be delivered to Zarya nadir on 132. Seems to me that the value of the cupola is greatly wasted in its current location since it doesn't have a good view of the station and can't really see the truss segment well. Cupola's main purpose in life is to give views for arm operators to capture HTV, Dragon, and Cygnus. EVA observation was always gonna be iffy no matter where Cupola was situated... too many obstructions. That's right. And Cupola's current location is excellent for SSRMS captures below Node 2. From a mass point of view, is node-3 in the same ballpark as the quest airlock ? Launch weight of Node 3 was about twice that of Quest, although I think Quest gained some weight with lots of EVA add-ons and O2 and N2 tanks and the like. Right. Node 2 and Node 3 were identical, both were far larger than Quest. |
#8
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Questions about Tranquility (Node3)
On Sun, 21 Feb 2010 21:42:43 -0600, "Jorge R. Frank"
wrote: Brian Thorn wrote: On Sun, 21 Feb 2010 20:06:27 -0500, John Doe wrote: What was the reason to move node3 from node1-nadir to node1-port ? The decision to add the PMM (formerly MPLM Leonardo) to the Station. Leonardo won't have as good MMOD protection as Node 3, so they moved Node 3 to Unity port and gave Unity nadir to Leonardo, which will benefit from being "under" the station and protected from more MMOD than Node 3. Was it because they were affraid of progress/soyuz traffic docking nearby That was also a concern until MLM arrives on 132. Then Leonardo goes on Node 1 nadir on 133. Slight correction: MLM will replace Pirs on Zvezda nadir; MRM-1 will be delivered to Zarya nadir on 132. Darn those M abbreviations! MRM, MLM, MPLM... :-) Brian |
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