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Jim Kingdon wrote:
The thing about ECLSS is that it requires various ducts, connections, software, and the like. Destiny has it all. Remember that it has dehumidifiers, CRDA, air quality stuff etc, as well as central ventilation system, as well as the valves to release O2/N2 from Quest into cabin. (Although I think that each module exched for node 1 also has the capability to release O2/N2). not expecting to see a retrofit which involves running a water line (for example) to an existing rack in the Lab or such. There are water lines through the CBM hatches. I think that they will eventually want to pull the water from the dehumidifier in Destiny to the O2 generator. Currently that water is bagged and brought manually to the russian segment. (there are no water lines aft of Node 1). Could one design ECLSS in a more "appliance" like way? For example, having the astronauts carry the water over in a bag and put it into an oxygen generator manually from time to time? That is what is being done right now. Could one run semi-ad-hoc lines fairly easily using things like flexible tubing Yes they "could". However, it is unlikely for the US segment since everything has been so carefully planned, not sure they will need "ad-hoc" and not sure they will tolerate ad-hoc, especially if it needs to cross CBM hatches. getting through a hatch. The standard ISS solution, as I understand it, is a through-hull on each side, followed by an EVA to hook them up. nop. the proper way is to use the connections that are already in the CBM that stay within the pressurized volume. There are a whole bunch of connections already planned/provided between CBM hatches with the "jjumpers" installed from inside the vestibule (pressurized volume). Not sure that NASA would want new holes drilled in that section though since it would invalidate the "air tight" testing that was done on earth pior to launch. Fortunatly, there are already connectors for water, air, O2, N2, water, video, power, data etc etc etc. |
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