Some very nice digging going on here YG
I agree with most of what it said so far. There is a big partner in Bigleow that they could use to create something lightweight. However I think I would fly the Urine recycler. It is just one of those things that when it breaks down no one wants to repair (i.e. Like a sewer system) but it does work from what I have read. The real issue with the ISS life support systems is that they take more labor than thought and are less reliable than planned. Also 365 days for a crew of 3 might not be that ambitious. Skylab could support 3 crews of 3 people for 3 months each so in theory it could support 3 people for 270 days with no recycling. ISS recycling can reduce water demand for the crew byu p to 65% so 365 for 3 people might not be that extreme esp. as in theory the ISS has closed the oxygen loop.
Here is a recent HEFT2 presentation on Deep Space Habitats:http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110006982_2011003312.pdf
Quote from: yg1968 on 03/26/2011 11:31 pmHere is a recent HEFT2 presentation on Deep Space Habitats:http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110006982_2011003312.pdf(Reposting here, as I had the following in the wrong thread):Good find!I like how they are showcasing the ISS ECLSS for use on this. (personal note: I hope those few detractors can see WHERE the benefit of ISS component development is crucial for deep space missions)
yay, a convert! Welcome aboard! LOLWe all have our own likes & aspirations for spaceflight. My problem is I want all the groups to have a slice of it, and hopefully we can meet at some point where everyone has gained.There are some aspects to ISS systems which might have a tough time in deep space habitats: specifically if we want an artificial gravity system provided. ISS systems are designed for microgravity, so they aren't necessarily a 1:1 transfer. I realize that. However, there would also be times when AG can fail, or ops require no AG, or the journey is too short to require it. In those cases, having that built-in capability can be essential, so these 'baby steps' we are taking at developing these capabiltities now can become contigency factors later on.So for a lower-cost capability, we use such a habitat as a non-AG version, and perhaps fly one in LEO WITH that AG capability to test those system long term.One thing I'm not sure about is if the ISS systems are hardened against radiation. I know the station laptop computers aren't, but not sure about ECLSS. I wouldn't mind clarification from one our esteemed members
Quote from: robertross on 03/28/2011 02:08 amyay, a convert! Welcome aboard! LOLWe all have our own likes & aspirations for spaceflight. My problem is I want all the groups to have a slice of it, and hopefully we can meet at some point where everyone has gained.There are some aspects to ISS systems which might have a tough time in deep space habitats: specifically if we want an artificial gravity system provided. ISS systems are designed for microgravity, so they aren't necessarily a 1:1 transfer. I realize that. However, there would also be times when AG can fail, or ops require no AG, or the journey is too short to require it. In those cases, having that built-in capability can be essential, so these 'baby steps' we are taking at developing these capabiltities now can become contigency factors later on.So for a lower-cost capability, we use such a habitat as a non-AG version, and perhaps fly one in LEO WITH that AG capability to test those system long term.One thing I'm not sure about is if the ISS systems are hardened against radiation. I know the station laptop computers aren't, but not sure about ECLSS. I wouldn't mind clarification from one our esteemed members So far HEFt has no plans for artificial gravity.
I don't think anything needs to be invented for DSH just buy an off the shelf station and adapt it.The Bigelow Sundancer pretty much already is a self contained station.It also should be possible to perform this mission using just EELV class LVs.
Quote from: Patchouli on 03/28/2011 11:28 pmI don't think anything needs to be invented for DSH just buy an off the shelf station and adapt it.The Bigelow Sundancer pretty much already is a self contained station.It also should be possible to perform this mission using just EELV class LVs.Ask yourself: what is the purpose of Sundancer?LEOThese were not designed for deep space, and it would cost more to adapt them, rather than design from the ground up for deep space. Besides, most of it is just a shell.
Quote from: robertross on 03/28/2011 11:40 pmQuote from: Patchouli on 03/28/2011 11:28 pmI don't think anything needs to be invented for DSH just buy an off the shelf station and adapt it.The Bigelow Sundancer pretty much already is a self contained station.It also should be possible to perform this mission using just EELV class LVs.Ask yourself: what is the purpose of Sundancer?LEOThese were not designed for deep space, and it would cost more to adapt them, rather than design from the ground up for deep space. Besides, most of it is just a shell. LEO space hotel but it does outperform a can type module in every way that counts for this....