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Dragon landing on Mars video
On Apr 29, 4:51*pm, Pat Flannery wrote:
New SpaceX video showing the Dragon capsule using its escape system engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY Pat Elon Musk wants to land a man on Mars in 10 to 20 years: SpaceX Will Send Humans To Mars In the Next 10 to 20 Years. By Rebecca BoylePosted 04.25.2011 at 10:59 am http://www.popsci.com/technology/art...rs-10-20-years See the video interview linked on that page. Bob Clark |
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Dragon landing on Mars video
On 4/30/11 8:28 AM, Robert Clark wrote:
On Apr 29, 4:51 pm, Pat wrote: New SpaceX video showing the Dragon capsule using its escape system engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY Pat Elon Musk wants to land a man on Mars in 10 to 20 years: SpaceX Will Send Humans To Mars In the Next 10 to 20 Years. By Rebecca BoylePosted 04.25.2011 at 10:59 am http://www.popsci.com/technology/art...rs-10-20-years See the video interview linked on that page. Bob Clark One wonders what the plan is to keep the travelers from being killed by radiation. |
#3
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Dragon landing on Mars video
One wonders what the plan is to keep the travelers from being killed by radiation. NASA tended to be in denial on this issue and made statements like the Mars crew will get their lifetime dose during the round trip - so no Mars crews will fly twice. What we need is th acceptance that shielding must be provided asgainst both gamma and fast particles, and a realistic allotment for the extra weight. May need some different thoughts on where we make the fuel - Moon or Mars. Val Kraut |
#4
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Dragon landing on Mars video
Pat Flannery wrote:
On 4/30/2011 7:29 AM, Val Kraut wrote: One wonders what the plan is to keep the travelers from being killed by radiation. NASA tended to be in denial on this issue and made statements like the Mars crew will get their lifetime dose during the round trip - so no Mars crews will fly twice. What we need is th acceptance that shielding must be provided asgainst both gamma and fast particles, and a realistic allotment for the extra weight. May need some different thoughts on where we make the fuel - Moon or Mars. They played around with shielding the spacecraft with an electrostatic screen: http://www.msnbc.msn.com/id/5079651/...science-space/ But the article ends with a statement about surrounding the habitable core of a Mars transit ship with tanks of LH2 or L-H20 to provide shielding. If liquid water is used as a shield wouldn't it also need to be heated while in transit to Mars? Or would pressurizing the water tanks help? Or both? All it takes is energy, energy, energy. These Dragon capsule Mars exploration wet dreams produced by the SpaceX PR department makes my even more off-topic ranting fair game: Warp drive or an interplanetary 'transporter' would solve *all* these mundane problems. You know if we *had* a really good quantum traveling device, everyone could get a chance to be everywhere at least once in their lifetime. Hence all of space exploration could be achieved in just a few years (time needed to get everyone to experience the quantum trip). Or maybe we just sell hallucinogenics on the street corner instead of spending millions on NASA. Outsource space exploration to Mexico! :-) Back on topic for a second. Really, if Musk wants to go to Mars and HE is footing the bill, he is free to try... Dave |
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Dragon landing on Mars video
On 4/30/2011 7:29 AM, Val Kraut wrote:
One wonders what the plan is to keep the travelers from being killed by radiation. NASA tended to be in denial on this issue and made statements like the Mars crew will get their lifetime dose during the round trip - so no Mars crews will fly twice. What we need is th acceptance that shielding must be provided asgainst both gamma and fast particles, and a realistic allotment for the extra weight. May need some different thoughts on where we make the fuel - Moon or Mars. They played around with shielding the spacecraft with an electrostatic screen: http://www.msnbc.msn.com/id/5079651/...science-space/ Pat |
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Dragon landing on Mars video
On 4/30/2011 10:14 AM, David Spain wrote:
Pat Flannery wrote: On 4/30/2011 7:29 AM, Val Kraut wrote: One wonders what the plan is to keep the travelers from being killed by radiation. NASA tended to be in denial on this issue and made statements like the Mars crew will get their lifetime dose during the round trip - so no Mars crews will fly twice. What we need is th acceptance that shielding must be provided asgainst both gamma and fast particles, and a realistic allotment for the extra weight. May need some different thoughts on where we make the fuel - Moon or Mars. They played around with shielding the spacecraft with an electrostatic screen: http://www.msnbc.msn.com/id/5079651/...science-space/ But the article ends with a statement about surrounding the habitable core of a Mars transit ship with tanks of LH2 or L-H20 to provide shielding. If liquid water is used as a shield wouldn't it also need to be heated while in transit to Mars? Or would pressurizing the water tanks help? Or both? All it takes is energy, energy, energy. Why does it have to be liquid? Ice would work as well, and make a great micrometeor shield. Back on topic for a second. Really, if Musk wants to go to Mars and HE is footing the bill, he is free to try... It does show that their very creative in what his team realizes Dragon can do with its LES. The question is, did they plan for that from the beginning, or realize it could do that after they decided on the escape motors mounted in the capsule itself? He may of gotten the idea from this Russian spacecraft design: http://www.astronautix.com/craft/zarya.htm which used combo escape/landing engines. Pat |
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Dragon landing on Mars video
On 30/04/2011 11:28 PM, Robert Clark wrote:
On Apr 29, 4:51 pm, Pat wrote: New SpaceX video showing the Dragon capsule using its escape system engines to land on Mars:http://www.youtube.com/watch?v=6p6EruPdoXY Pat Elon Musk wants to land a man on Mars in 10 to 20 years: SpaceX Will Send Humans To Mars In the Next 10 to 20 Years. By Rebecca BoylePosted 04.25.2011 at 10:59 am http://www.popsci.com/technology/art...rs-10-20-years See the video interview linked on that page. Bob Clark Here's another link to the same interview http://www.marke****ch.com/video/ass...C-DF0DEFAD15BA However, it is to be remembered that this has been described as his "personal goal" and might not have much to do with overall SpaceX plans. |
#8
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Dragon landing on Mars video
On 4/30/2011 12:43 PM, Val Kraut wrote:
NASA also had teams studying electric fields to protect bases on the Moon. There's always the Caviate about power source It would obviously require a powerful nuclear reactor be mounted on the Mars ship. Getting rid of the heat from that could be a real problem for the designers, as it would require some very large radiators. Pat |
#9
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Dragon landing on Mars video
On 1/05/2011 12:31 PM, Pat Flannery wrote:
On 4/30/2011 12:43 PM, Val Kraut wrote: NASA also had teams studying electric fields to protect bases on the Moon. There's always the Caviate about power source It would obviously require a powerful nuclear reactor be mounted on the Mars ship. Getting rid of the heat from that could be a real problem for the designers, as it would require some very large radiators. Pat PV (photo voltaic - solar cells) can still be used on Mars. Why does everyone seem so intent on using nukes? |
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Dragon landing on Mars video
Alan Erskine wrote:
On 1/05/2011 12:31 PM, Pat Flannery wrote: On 4/30/2011 12:43 PM, Val Kraut wrote: NASA also had teams studying electric fields to protect bases on the Moon. There's always the Caviate about power source It would obviously require a powerful nuclear reactor be mounted on the Mars ship. Getting rid of the heat from that could be a real problem for the designers, as it would require some very large radiators. Pat PV (photo voltaic - solar cells) can still be used on Mars. Why does everyone seem so intent on using nukes? Power per KG . You need lots of power and a minimum of weight. The choices are very limited. |
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