Manned Mars Missions.
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From: RickyBobby on 11 Jul 2010 14:03 > > No, of course it doesn't. The training and preparation for a mars mission > would not be that different to a moon mission. There are three distinct > phases to such a mission: Firstly, lift-off and orbiting earth prior to > actually setting off on the body of the journey. Secondly, the transit > between earth orbit and orbit of the target body, in this case Mars. And > thirdly, entering orbit of Mars and entry to the martian atmosphere > culminating in a successful landing. The only difference is the length of > the transit portion of the mission, which hopefully would be a stable > period with not too much happening. And then of course the same three > phases for the return journey. > > But there is a greater problem which you have not mentioned. Quite apart > from the risks inherent in all travel, and especially space travel, the > astronauts would be subject to the radiation from which we are normally > protected by Erth's atmosphere, and this exposure would almost certainly > prove fatal for the astronauts, who would be expected to suffer various > types of radiation-induced tumours. For this reason it has long been > assumed that such a mission would be crewed by more senior astronauts. > Certainly it could not include for instance women of child-bearing age. > > Steve > It makes for a nice dream but it will never happen. A ship that could go from Earth to Mars and back would have to be bigger than the Empire State Building. It would never get off the ground. The amount of thrust that would be required to accelerate such a ship to a speed that would get it to Mars in a reasonable number of years would require so much fuel that the thing would not be able to take off. To imagine a manned trip to Mars and back is to imagine things that simply do not exist. Roughly 70% of the people on Earth lack food, water, medical care, electricity, and running water. It may be a hard sell to commit three hundred trillion pounds to a science experiment. There is no practical reason to try to send a manned mission to Mars. It is all the ego of the pointy-headed dreamers.
From: Newton Heath on 13 Jul 2010 05:51
On 9 July, 14:44, "shazzbat" <shazz...(a)spamlessness.fsnet.co.uk> wrote: > There may well be an element of improvisation to be done, as there was on > Apollo 13. But my point was that your assumption of 52 years was wild. But > of course we're hoping that the training and preparation will be adequate > for the trip. Assuming they prepare twice as much as they did for the moon, > that still gives us a figure of 1 year, not 52. As I said earlier, the > phases of the mission would not be significantly different to the equivalent > phase of a moon mission. The main difference would be the duration of the > transit phase, but it's resonable to assume that there will be a sizable > element of routine. I would imagine all simulations would be done with the purpose of not having to improvise one bit. Everything is prepared for and if not, then there's no mission. Yes, 52 years is a bit wild but proportionate, based on the mission length. It defo wouldn't be just 6 months to prepare. Finally, I beg to differ. Ask any astronaut, past and present, and they'll say there's nothing routine to space flight. Either take that as gospel or dismiss it as soundbyting to keep the funds coming in. I go with the former. > Or it backs up my argument that such preparation would take so long > the astronauts would be in their senior years. A woman of child > bearing age would be an ideal astronaut if the bigger picture involves > colonization. If a woman can't bear a healthy child on Mars, then > what's the point? > > For a colonisation mission yes, but we're talking about the first > exploration mission aren't we? Yes but the bigger picture is my point. It has been widely accepted by experts that some time in the future, we will have to leave our planet in order to survive. If women can't bear children on Mars, and we can't continue to exist, then what good is evacuating if that generation will be the last. We may as well just accept our fate and be done with. I wasn't at Silverstone. I was at work. Where you work in the week and have weekends off, mine is the other way around. Strange really. I hate Fridays and love Mondays. Oh well. |