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#126 Re: Human missions » Orbital Space Plane by 2008 - Faster, Cheaper, Better? » 2003-09-08 12:16:20

How feasible do you think it would be for private industry to purchase one or more OSP's (once they're designed and built), and use them to ferry paying customers to a hotel module on the ISS or even their own mini station for holidays?

#127 Re: Human missions » The drive for Space - ways to increase public support » 2003-09-07 21:21:33

Spiderman:

As for the ISS, we do not need it, not for microgravity experiments (launched laboratories are much cheeper and more convenient);

The ISS is a permanent (launched?) laboratory that is already there, why scrap it and relaunch smaller laboratories?

and exactly what do we need microgravity experiments for in the first place?

Oh come on! Its one thing being intent on going straight to mars, but its quite another blatantly ignoring all the research that is needed to get there.

NASA, understandably, has problems explaining how the ISS is going to benefit the whole of humanity with wonderous new technologies, but the majority of science conducted on board is absolutely critical to the future of space flight. Even having people up there, and studying them whilst they are conducting other experiments has delivered a wealth of vital information.

This new OSP is a cop-out, just like the Shuttle was a cop-out, a deliberate waste of time meant to keep a large ground crew busy that had nothing to do after Apollo.

Putting the ISS debacle asside, the OSP is exactly what is needed for ferrying crews back and forth, in that respect it is a producive step in the right direction.

In my opinion the shuttle was a marvelous craft that got stretched way, way beyond its intended operational life time.


Sethmckiness

I don't remember where I saw it, but a picture of the ISS with a Taurus wheel for Artificial Gravity.

This would be a good idea, expand the station. However the original station design incorporated a module with a centrifuge for doing large variable gravity experiments, this was dropped because the vibrartions would have interfered with the other experiments. Even though any affect would be of a lower frequency im wondering how a large artificial-g wheel might affect the station.



What are the steps B,C,D et cetera that will need to be taken

Well, if we use mars direct, the only step is to develop a heavy lift vehicle. (and obviously the mars direct technology too  :;): )

#128 Re: Human missions » Proton Mars - The 2 Billion Dollar Manned Mars Mission » 2003-09-07 14:47:02

Would it not still be a good idea to break it up into stages a la Mars Direct. You could send the hab, and return vehicle on slower trajectories before hnd, and once they are set up and ensuring a place to stay and way to get home, send the crew.

Would this make it more expensive?

Could you make it clearer what components you are taking along, and what each of their functions are?

Cheers

Nick

#129 Re: Human missions » The drive for Space - ways to increase public support » 2003-09-07 14:35:02

Actually, the space elevator cable would most likely be a ribon and would be a meter wide at its widest and mere microns thick.

High Lift

Lift Port

As far as the ISS is concerned, it will soon be the only capability that exists in space for performing microgravity experiments (once the shuttle is gone), so like it or lump it, because we need it. The OSP will be useful IMO for ferrying people to and from the ISS (and hopefully greatly reduce the costs involved) and maybe other platforms that might be developed in low earth orbit (fingers crossed).


But i do agree, it would be nice to have something that could take us further.

#130 Re: Human missions » Mission To Mars Website Open » 2003-09-05 13:21:29

Ok, hows about this for an adaptation of the game - a way of keeping it competitive.

How about you have competing teams flying parallel missions to mars, competing to do various tasks or complete goals first.

I dont think they could actually each design and build their own spacecraft, (you guys would have to model each of their rockets and habs), but maybe theyd have to oversee the construction of each of their rockets or habs, and mistakes would lead to problems later on. (that would definately add to tension at launch and landing)

They would have to design and man their own mission-controls, deciding what equipment to have, how many people contributing and to what positions (as well as staff rotas), their layouts and command structure would then more reflect what they wanted to do and would directly impact the mission by being more or less efficient.

Im not sure about the transit time to get to mars, but there would still be things to do en-route - especially for mission control.

When they land on mars they have tasks to perform (least of which is staying alive) and missions to perform.

Most importantly, the teams can interact and see how the other is progressing (in a kind of peak over the fence kind of way), and when they reach mars the teams, if they are there at the same time, will be able to interact with each other, maybe help each other, maybe sabotage other teams. One team might help out anothers mission control if theirs fails or has communication problems etc.

If it looks good enough as well, you might even be able to splice the whole thing together and make short films of their eforts.

This version is obviously a little less 'realistic' but would maintain the basic mission structure it would just give the players more control and responsibility over their fates. And obviously give everything a potentially needed competitive edge.

I can see teams registering a week before game start, then 10 teams all racing to build their rockets and fly them to mars over a couple of months. total mission time would of course be important.

#131 Re: Human missions » Orbital Space Plane by 2008 - Faster, Cheaper, Better? » 2003-09-05 12:09:37

He fails to point out though, that the upper stage is far more complex and expensive to build than the lower stages.

The lower stages are generally expendable because they are relatively cheap to replace, wheras the upper stage (in the OSP, but not for a cargo launcher) includes life support, in-orbit manuvering systems, communication systems..... its a space craft, you get the idea, i shant go on. This is why i like the resusable capsule idea, its a simple design that minimises the ammount of extra weight needed to make it reusable, whilst actually remaining fully reusable.

If youre just shooting cargo into space, then theres no need to keep the final stage because it would be a fairly simple piece of eqipment, and Zubrin is correct in those respects.

This is why NASA is now moving towards seperating crew and cargo. From a scientific standpoint, the shuttle was designed to fly into space for a week, conduct microgravity research and return. We now have the ISS, which provides a convenient platform for conducting this research, and it is much cheaper and simpler to have astronauts who can 'commute' (every 6 months  ??? ) to and from the station to perform experiments. The only capability that would be missed by the loss of the shuttle would be the ability to return large peices of equipment to earth (the OSP will have a small cargo-carrying capability).

#132 Re: Human missions » Mission To Mars Website Open » 2003-09-05 11:50:52

I seriously think this is a great concept.

All the technical information is there for you to base the game on. Its not going to be based on science fiction, so you can litterally incorporate every detail properly, which will be a big buzz for those of us who will notice it. And for those players when they come out, and think that maybe mars exploration might be quite cool, there is all this information on the web that is proving that we can actually do, in real life, what they just did in the game!

#133 Re: Not So Free Chat » what's the best telescope » 2003-09-03 15:38:32

This article caught my eye....

Becoming a Telescope Nut - BBC

I wonder how hard it would be to construct my own telescope, i mean a big one like 20" or so....

How much do you reckon it would cost guys? What sort of problems might one hypothetically run into?

Cheers

Nick

#134 Re: Interplanetary transportation » Antimatter Propulsion - Could Antimatter be used for propulsion? » 2003-09-01 14:53:57

I wouldnt say it is wasted at all!

Just because this particular group advocates a short mission time doesnt mean that the anti-matter propulsion technology they show isnt a god send!

They probably only give such a short mission time in order to highlight the extremely short transit time made possible by the technology.

The truth is that such a short transit time (6 weeks) would solve all of NASAs problems with getting to mars - the only real technological problem we have is dealing with the trip there and back. Radiation and the health impact of zero-gravity would both be all but eliminated by eliminating much of the potentially hazardous time actually spent in space!

Bottom line - its a great technology that will very likely revolutionise space transportation when it is eventually realised.

#135 Re: Civilization and Culture » Sports on Mars - What kind of sports will Martians play? » 2003-08-30 11:56:51

you could technically go pretty fast on a bike, less gravity would lead to less friction, and less air pressure would have a similar effect. However if you shifted your weight too suddenly whilst going fast or hit even the smallest bumb, you'd be in serious trouble!

#136 Re: Not So Free Chat » what's the best telescope » 2003-08-28 11:19:08

I see youve gone for a starting bid of $500. Very sneaky  tongue

#137 Re: Not So Free Chat » Can I mooch some free help? - A Mars related question » 2003-08-28 11:14:48

*My goodness.  Radio transmission times can vary this much?  I thought I read in _The Case for Mars_ that an average radio transmission takes 40+ minutes to reach Earth (and vice versa).

The longest radio transmission time in either direction is roughly 20 minutes, the shortest, i assume is 186 seconds. The 40 minutes is the time it takes to get a response in a conversation or if you ask a question - and thats if you reply instatntly!

#138 Re: Human missions » Exploritory Team For Mars Expedition Simulation - Mars Expedition Sim » 2003-08-28 10:28:06

Im sorry, my bad. Its cwegner.

I have no usefull skills to offer you in programming, but i think its an excellent idea, and would be more than enthusiastic to help beta-test. A lot of mods were made using the original HL engine, many of which proved to be enourmously popular. You could definately be onto a winning idea here, one that could bring the bug for mars exploration to the masses!

Keep me (and us) updated and f you need any help just let me know!

#139 Re: Not So Free Chat » what's the best telescope » 2003-08-27 17:38:53

Speaking of buying telescopes, i think in about a month there will be a whol load of decent telescopes for sale on ebay.

#140 Re: Not So Free Chat » American Moon Base prediction... - tell me what you think » 2003-08-27 17:24:59

maybe i spoke to soon........

Mars Trip Not on Political Radar - Wired News

Although, reading between the lines from what the spokesman says, is it that theyre not interested in going to mars right now, or that theyre not being told to be interested in going to mars right now (as in i-would-if-i-could-but-the-boss-hasnt-given-the-go-ahead-yet-but-might-do-soon-hint-hint)

#141 Re: Civilization and Culture » Martian Olympics » 2003-08-27 16:24:50

I think there will be a big interest in cross-country events. The huge, open, potentiall lethal spaces out there will have a big pychological impact on people.

Events where they race against each other on foot (orientearing style) between colonies maybe, or maybe in special rugged rovers would be a big draw for people i imagine.

#142 Re: Not So Free Chat » American Moon Base prediction... - tell me what you think » 2003-08-27 16:20:05

hmmmmm

The CAIB report suggesting NASA needs a 'compelling mission requiring human pressence in space', public interest in mars is at its highest in over a decade due to the combination of its close approach and the 4 missions currently en-route and due to arrive at the beginning of next year, more societies and groups than ever before pushing for increased human exploration, X-prize to be won in the first half of next year (fingers crossed), i swear if america doesnt make a commitment now or in the near future to put people on mars, they never will!

We really are building up to something over the next year, (SpaceX are launching falcon at the end of the year too) commercial spaceflight and public interest in space are both about to take off, the goverment must reallise this, and hopefully they will respond with positive action.

#143 Re: Human missions » Exploritory Team For Mars Expedition Simulation - Mars Expedition Sim » 2003-08-26 21:22:41

is it possible to make short animations using the HL2 engine? On www.redvsblue.com they have done this with the Halo engine and its proving extremely popular. You could use it as a viral marketing tool for your mod.

EDIT: cwenger came on the message board back in january offering his services as a programmer, maybe he can help you?

#144 Re: Not So Free Chat » what's the best telescope » 2003-08-25 22:30:43

The dark side of the moon only provides a bonus for radio telescopes.

Its called the 'dark side' because we never see it, rater than because light never falls on it. A lunar observatory could quite happily sit near trhe 'rim' in view of earth for transmitting data and but still having lots of sky to look at that isnt actually obstructed by the ever-present earth.

The bonus of sighting a telescope on the moon or another lareg body is that you dont need gyroscopes for it to work out what direction it is pointing in or keep it pointing in the right direction - gyroscopes simply dont last long enough and fail after a couple of years.

#145 Re: Human missions » Russia to place nuclear reactor on Mars - with a view to a permanent base there. » 2003-08-25 21:48:38

hmmm

I cant find any reference to this other than on the BBC website. I normally trust the BBC for good, solid reporting though, so ill believe it.

Its quite good that the russionas have done this study but i dont think theyll allocate the funds to get it done by 2030.

Anyone know of any other links with info on this?

#146 Re: Not So Free Chat » EURO Mars - Whats going on? » 2003-08-25 21:32:58

yeah, thats the one i've been checking. But the site hasn't been updated in months!

Just wondering if anyone had heard anything about it being cancelled or delayed!

#147 Re: Not So Free Chat » EURO Mars - Whats going on? » 2003-08-25 15:46:15

Has anyone heard anything, or know any links to any current info on the EURO-Mars analogue Hab?

It was due to start its first firld sessions back in june, but every webpage i check doesnt seem to have been updated for months?

Anybody? ???

#148 Re: Civilization and Culture » Martian Olympics » 2003-08-24 20:30:54

lol

There wont be that many people on mars by MY 50 (assuming MY 0 is first landing), therell still probably be only one real colony, with a spattering of small outposts.

But hey, im no party pooper, i get the idea.

What about skiing/snowboarding events on artificially created  carbon-dioxide powder snow. No chance of it melting at least! Of course you ll need some pretty tough and flexible pressure suits, but it will be MY 50!

Im not sure how feasible the track events might be?!?!?!

All the field events!

hmmm
Ill have a better think about it then get back.

#150 Re: Interplanetary transportation » The Light Speed Barrier - Is there really a universal speed limit? » 2003-08-13 16:21:30

This is the basis of quantum theory. Basically it has been found through various exeriments that light displays both wave-like properties and particle like properties, this at one time sparked a heated debate over which it was, particle or wave, until quantum theory came along and said both and neither, in other words wave-particle duality.

I could go into detail, but its been a couple of years and i would probably mess up a detail somewhere and confuse you. Itll be in any university level chemistry book you can find.

Suffice to say that light displays some properties of waves and some properties of particles, for instance it has momentum, but not mass. Such is the quantum world.

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