Quote from: Robotbeat on 02/21/2013 03:02 pmThe Mir guys just had an exercise bike and resistive/compressive garments, could easily fit in a Dragon. I don't believe they had the resistance training or treadmill of ISS.Yeah, but don't forget all the other things that also have to fit in there - specifically 500 days' consumables for two crew. I'm pretty sure that, at least at launch, they'll be wedged in their smaller-than-normal-spec seats like the astronauts were during Project Gemini and will literally have to eat themselves free over a period of months. Yes, I'm saying that they'll be trapped in their launch couches for a very, very long time.
The Mir guys just had an exercise bike and resistive/compressive garments, could easily fit in a Dragon. I don't believe they had the resistance training or treadmill of ISS.
get rid of the waste ... the radiation issue.
Doesn't pass the Jerry Maguire test it seems..... NEXT!
My question is "why do this"
Quote from: ChileVerde on 02/21/2013 01:46 pmQuote from: apace on 02/21/2013 10:00 amMay I ask one of our gurus here to make some calculations how a voyage of 501 days looks like with a start in 2018? Fly-by? Mars orbit? Anything else?There's what looks to be a relevant set of tables at http://clowder.net/hop/railroad/sched.html but I haven't looked at them closely yet.According to this it can't be done in 501 days.
Quote from: apace on 02/21/2013 10:00 amMay I ask one of our gurus here to make some calculations how a voyage of 501 days looks like with a start in 2018? Fly-by? Mars orbit? Anything else?There's what looks to be a relevant set of tables at http://clowder.net/hop/railroad/sched.html but I haven't looked at them closely yet.
May I ask one of our gurus here to make some calculations how a voyage of 501 days looks like with a start in 2018? Fly-by? Mars orbit? Anything else?
So who's the billionaire?
Quote from: Lar on 02/21/2013 04:08 pmMy question is "why do this"Exploration.
One potential upside I see with all of these new ventures is that success in one could lift all boats by increased involvement, mindshare, participation, and funding. Success can breed investment.
Point of note that 501 days is about right for an Earth-Venus-Mars-Earth free return trajectoryhttp://cmapspaceexp.ihmc.us/rid=1JWVZ8RM5-TQKTP4-18RG/Mars%20Free%20Returns%20Via%20Gravity%20Assist%20from%20Venus.pdf
NASA would also have a role in this mission in terms of supporting key ECLSS and thermal protection system technology development
My question is "why do this", other than the coolness factor. What meaningful science or exploration or exploitation can be accomplished?
Thermal protection for conditions during the venus flyby?
Quote from: Lar on 02/21/2013 04:08 pmMy question is "why do this", other than the coolness factor. What meaningful science or exploration or exploitation can be accomplished? The primary objective is to prove that it can be done - to prove that humans can survive the trip to Mars and back to Earth and that it doesn't have to be a multi-billion dollar project requiring around a dozen SHLV launches and a huge spacecraft like something out of a sci-fi movie.That is where the 'Inspiration' comes from in the foundation name - to inspire people to emulate where they have gone before and inspire the decision-makers to realise that it does not have to be ruinously expensive and require enormous technology development programs.
* Launched on a Falcon Heavy* Privately funded, but leveraging NASA expertise in a few key technical areas (TPS and ECLSS)
I am interested to learn what is so special with the 2018 date.
The minimum-energy launch windows for a Martian expedition occur at intervals of approximately two years and two months, i.e. 780 days (the planet's synodic period with respect to Earth).[11] In addition, the lowest available transfer energy varies on a roughly 16-year cycle. For example, there was a minimum in the 1969 and 1971 launch windows, rising to a peak in the late 1970s, and hitting another low in 1986 and 1988
So then, what useful science can be done without raising mission cost too much.. is it at all possible to do much useful observing of things? A free return trajectory doesn't give chances for collecting much of anything, no...
It is amazing how everyone responds to these "news" items by posting their own personal architecture and subdesigns, as if they were in charge of the project, and virtually no one focuses on whether these proposals are going anywhere.It's all about the Bucks, not the Buck Rogers.