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#801 Re: Human missions » Should NASA be merged with other space agencies? - Creating a Unified, Single framework. » 2005-04-20 20:30:09

The UN can barely run itself, much less a space program.

The UN really needs to receive the Olde Yeller treatment, its holding us back. And by us I don't mean U.S., I mean the world in general.

But this is the wrong forum.

#802 Re: Human missions » ISS Woes & To-Mars » 2005-04-20 16:18:59

Reguardless, the Euros, and prehapes more importantly, the Russians, are intent on making the most of it.

Even if it cost us a resupply and a couple CEV launches a year, it would still be better to keep our foot in the door.

#804 Re: Human missions » New Space Race - will it accelerate the humanmarsmission? » 2005-04-18 20:04:09

Near term space wars are impossible, and the moment you put borders up there thats exactly what will happen.

For the forseeable future any resources exploited will be to directly support further exploration.

#805 Re: Interplanetary transportation » Interplanetary supply infrastructure - Cyclers vs. one way capsules » 2005-04-18 19:46:23

Cyclers.

Perferably a 2 stage system. Heavy cargo is launched to low earth orbit, were it is met by the first cycler in a highly ellipical orbit, which then meets the second that just skips around earths gravity well.

If the interplanetary cycler is fast enough (Earth to Mars in less than 3 months) then it might be worth putting manned capsules on it. Otherwise there will be too many complexities in life support systems to use in a cycler, in will have to enter a stable orbit to prepare for its next trip.

#806 Re: Human missions » Going to Mars - Am I the only one? » 2005-04-18 19:03:34

Why do you think we should begin with several settlements? It seems to me that making one base bigger and more redudant is a better option since you can share the infrastructure.

No one settlement will have practical access to all the various resources needed. A base cutting blocks of polar ice here, large deposits of x mineral there, a space port on one of the big volcanos, all tied together by robotic rovers at first, maglev trains later. The beginings of an economy.

Besides, its going to be a while before scouting expeditions can travel far. Spreading out settlement will mean more of the planet can be covered.

#807 Re: Human missions » Post central for information on CEV III - Continued from previous » 2005-04-18 16:45:36

If the manufacturers are doing test flights in 2008, I don't see why NASA needs another 6 years to do a manned flight.

#808 Re: Human missions » Post central for information on CEV III - Continued from previous » 2005-04-17 15:15:11

The Boeing Sealaunch Zenit booster used a liquid propellent. Perhapes we can use them in a SDV instead of the SRBs. It would seem that they would be quicker to refuel. Plus the fact that it lands on land would reduce the maintainance needed on the SRBs due to a salt water landing. Although the SeaLaunch doesn't make use of the Zenits reuseability, theres no reason why it couldn't.

#809 Re: Human missions » The need for a Moon direct *3* - ...continue here. » 2005-04-17 13:35:44

Well the Moon has lots of low tech stuff that could be used immediately. The mined water could be used for fuel, either for lunar exploration, or for storage and launch later for cyclers and other craft, that now don't have to launched with all that fuel.

The regolith itself can be baked into bricks for surface installations, or sent up on a RLV and applied to a manned interplanetary craft for radiation protection. Again, something we don't have to launch from earth.

Mineral deposits can be smelted, though not in large quantities right off. But much metal do we need to produce, say, a trust section for the ISS? What about Solar Panels?

Later on, large, empty metal tanks resembling the current ET’s can be built and pressurized, and made into habitats by astronauts using nothing more advanced than the stuff you see on "This Old House".

If we stick with it, gravity will allow us to grow some food up there, removing the need to send such expendables to the ISS form Earth. If its still there.

All these can be done on the Moon, and would make a Mars mission a little easier, both in the execution of the mission, and in testing the technologies we need anyway. A moon base will reduce the cost of launching from earth. Or at least give us more bang for our buck.

#811 Re: Human missions » Post central for information on CEV III - Continued from previous » 2005-04-15 08:54:33

Were going to spend a lot of money on the fancy aerodynamic shell and rockets of whatever we launch on a SDV.

#812 Re: Human missions » Mike Griffin confirmed » 2005-04-14 18:05:43

Everyone was occupied with the Bolton hearing.

#813 Re: Interplanetary transportation » matter and anti-matter - Bringing back the old idea » 2005-04-12 20:36:01

Dilithium is purely fictional, there is no such substance, nor could it exsist.

Its function in Star Trek land is to catylize the matter/antimatter reaction and causes the resulting plasma to move in a particular direction for easy use in likewise fictional warp engines.

Isn't it Quartz?

#815 Re: Human missions » Going to Mars - Am I the only one? » 2005-04-11 14:07:13

You know Smreany, you know who you are starting to sound like? A hard-core Marxsist Communist. The one modern idealogy that has killed more people then Nazi genocidal antisemetism.

Thats not entirely fair to the Nazis. They only had 12 years.   :;):

#816 Re: Human missions » o.k. what's the deal? - shocked? » 2005-04-08 15:38:39

I had a thought. Is it possible to use large amounts of water, in say a swimming pool, to generate power like a hydroeletric plant?

Say theres a swimming pool with series of drains in the bottom. Those drains direct water trough pipes, past a series of hydroelectric generators at high pressure, and that pressure then pushes the water up through a tube that dumps the water back in the top of the pool.

#817 Re: Human missions » o.k. what's the deal? - shocked? » 2005-04-08 14:54:46

Each home with its roof covered with solar panels could provide most, if not all of the power needed, no matter were on Earth they are. At least enough to seriously reduce the need for outside power.

The trouble is the things are so expensive and have a limited lifespan to be of little savings to the consumer over time. The companies that produce them seem more than willing to suck up huge profit from a niche market with little investment.

#818 Re: Human missions » Is this advertising? - NASA to offer website sponsorships » 2005-04-06 19:48:39

Next step: Pay to have your logo plastered on the aerospaceframe itself. Will it come to that?

If it means getting farthur, faster, and with more, I hope so.

#819 Re: Human missions » Crew vehicles discussion » 2005-04-06 18:41:20

With the x-38, doesn't the Hermes offer a gear down landing on an airfield?

Hermes seems to have predated the X-38 by a decade as ESA program.http://www.astronautix.com/craft/hermes.htm]Link

But the shape is eerily similar...
hermcut.jpg

#820 Re: Human missions » Crew vehicles discussion » 2005-04-05 20:03:35

Weren't there orginally plans to launch the X-38 on a EELV?

The trouble with that is it was only designed to be used once, in the event of a dire emergency were odds are the ISS wouldn't be there to return to.

#821 Re: Human missions » The Lunar Folly - NASA Scientists give their reasons. » 2005-04-02 18:36:03

And what do you suppose 'In-Situ' means? Currently, we are not in a situation which warrants the construction of lunar extraction facilities for export to earth. We may be in that sort of situation 50 years into the future, or sooner if launch costs come down considerably, but not today. Lunar resources will help us on the moon, not here on earth. Atleast not yet.

It might not do much on the moon right off, but we will need it immediately on Mars.

#822 Re: Human missions » Finally, a sensible solution to the Hubble debate - ... that we can all agree on...maybe. » 2005-04-01 10:27:31

A well aimed anti-satillite missle shot just before it begins its plunge should break it up enough to ensure that the peices are small enough to burn up.

#824 Re: Human missions » The Lunar Folly - NASA Scientists give their reasons. » 2005-03-21 20:10:41

^ If nothing else, we can bag lunar regolith and tack it to the side of the ship.

#825 Re: Human missions » Zubrin on Moon, then Mars - Three essays, one link » 2005-03-17 17:03:38

NASA will not be returning to the Moon to mine platinum, Damnit! Yes, that might be a great idea, but no matter how logical it may seem, IT WILL NOT HAPPEN!

I promise.

Now let us please be realistic in the context of NASA's near-term capability and agenda.

NASA has to do it first.

You don't actually think mining companies will try it on their own without the goverment doing the R&D and working out the bugs first do you?

We have to start looking for ways to recoup the massive costs involved. Congress will not fund science expeditions forever.

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