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#26 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-29 23:55:00

Shaun, do I hear a lecture coming on? Point taken, I'll stop rubbing everyone's nose in my age. smile

Granted, if you survey the general population on various attributes you'll find that one gender is at an advantage compared to the other in certain areas. As you mentioned, females develop communication skills faster, while males tend to develop spatial and nonverbal skills more quickly. However, what works for a general population does not necessarily apply to an individual. Whether or not the female population has an appalingly low representation in math and science fields has absolutely zero bearing on how capable someone like Eileen Collins is as an astronaut. Stereotyping is bad, something that we really ought to try to avoid.

Yes yes yes, I know what the "battle of the sexes" is. I'm not three years old anymore (I don't think I am anyway. Maybe I should check). That doesn't mean that I have to support the idea. I'm not a fan of bragging about a gender's inherant advantages or deriding the opposite's disadvantages. Personally I find this to be an exceedingly myopic activity that teaches one to view people in terms of averages amongst oceans of statistics rather than as people, warm, furry, living, breathing, feeling, dreaming humans, which incidentally is what most people happen to be. The funny thing is that brains tend to be split up about half and half between the genders. The brain is the only organ that has real importance as far as I'm concerned; in a sentient creature the rest is just dross. Now, if I'm considering courting this human I might be more discriminating in my tastes, but that's another topic.

Last year I had the most amazing English teacher. There's probably nothing to it, but I really think that you can tell someone who is exceptionally intelligent apart from the rest of the crowd whenever you watch them closely. People who are truly brilliant, at least in the direction I'm talking about, just have a certain nuance about them, a sense of ease talking about the most esoteric subjects, a certain glint in their eyes, what have you. I could be dreaming this all up in my head, but it seemed to me that my teacher had some of this je ne sais quoi.

I say this because this fantastically capable woman has gone on to teach high school English. Now, this suits me just fine, and I'm very greatful to have been in her class, but stop and think about how many stories there are like this. She could have been a cosmologist, a rocket scientist, whatever, but chose to instead go into a field where she very likely will have much less impact on the world than might otherwise have been possible. The only thing that stopped her was some sort of seemingly-ingrained loathing of anything scientific. It's tough to design rockets if you regularly say phrases such as "I hate physics!"

The only reason I mention a story like this is because I can't help but wonder if that reflexive recoil from science isn't as ingrained as it might seem. Standardized tests have shown in the past that women do tend to score better in verbal areas than in nonverbal faculties such as math comprehension, but the differences between the genders are actually very small. Moreover, every scientific study ever done on the subject has shown that males and females have no difference whatsoever in overal cognitive ability. It makes you wonder: have we created a society that turns females away from science and technology.

I really hope I'm playing chicken-little Debbie-Downer here and am rattling on about nothing. In all likelihood, I am. There will always be a disparity in fields like engineering between the genders, and there will also be fields that always skew more towards women. It's a fact of life we can't escape any more than Newton's laws, but we should not read too much into it. We need to have a culture that is receptive to anyone pursuing any kind of career they please (provided it actually brings about some benefit to society, of course), and I'm happy to say that we're closer to that than ever before. Ah, what an age we live in. cool

I'm probably blowing this issue way out of proportion. I do apologize if I've just come off as being overly combatative; it's kind of a reflex of mine to do that. Oh, and if you ever meet my former English teacher, please don't tell her I said any of that. It would be a bit awkward when I'm asked to explain myself.  :laugh:

Hey, the band's here!
:band:

#27 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-27 23:04:21

Ohhhhhhh, you wanted a serious answer.  big_smile

So, in the end, no first thought at birth. Just reactions to stimulus. Some people never grow out of it, as numerous debates throughout the internet attest.  big_smile

Deadly serious stuff, life. I'm always exceedingly serious about just about everything I say or do for some odd reason, frivolity just doesn't come naturally to me. Even when I'm kidding around I'm usually very serious about any points I make. What does this have to do with my post? Just about nothing.

Granted, one's brain isn't completely set in its final locked position at birth, but then again when is it? The brain is constantly developing at an insane pace right up until an individual's early 20s, and we can be reasonably sure that people are in fact concious even during this period. At least, I'm pretty sure that my brain is up and thinking right now. I'd bet, and remember that I'm not in any way qualified to say this, that first tought likely occurs somewhere in the third trimester of development, probably the seventh or eighth month give or take. That timeframe is when the mylen sheath starts being laid down between the brain cells and nerve conduction velocity skyrockets. That's when the processing power of the brain shoots up exponentially, enough to enable conciousness.

But conciousness by itself doesn't mean very much. Like you point out, many of the other brain functions are not yet in place (such as memory-creation), and humans possess very few relevant instincts at birth. For our first few years we become lean, mean learning machines, because we have to be. Humans and dolphins are both great at doing these things, but, as Cobra pointed out, dolphins are rather disadvantaged to utilize whatever intellect they have. Dolphins are the ultimate epicurians, wandering the seas with not a care in the world except finding food and having fun. It's nice to know that we set our sights on loftier goals.

Buzz Aldrin says:

Feelings? Girls have feelings. Boys do things.

Bah, I feel like I want to throw up every time I hear something like this, once again in all seriousness. There's a space in physics known as the Planck distance that's many, many times smaller than the radius of a hydrogen atom. It is the smallest distance any material object can possibly travel, and with misogynistic thinking you can almost go that far, but not quite. He was probably kidding around, I know, but it really really bugs me whenever people say stuff like this. I'd love to ask him "And why exactly do you do things if you don't feel about them?" Both feeling and doing are necessary, why exactly do we have to fight between the two?

Well, that's my take on it anyway. cool

#28 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-26 22:21:46

What is the first thing a person ever thinks?

Oh no, not again.

big_smile

Perhaps. Or perhaps it's something more along the lines of "Why am I here?" or "What is the meaning of life?" There's some critical moment where everything just clicks together right in a person's brain and they transition from a stimulus-response, input/output system to one of actual thinking, consideration, and self-awareness. It's gotta be a miraculous moment, but obviously no one knows when it occurs or what the first thing anyone thinks is. Then again, maybe it's just something like "Mmmmm, it's nice and warm in here."

Then again, Cobra might be onto something there. Humans just always seem to be bent on figuring out what's going on wherever they can't be, and then figuring out how to get there. That's why we build rockets and the dolphins don't.

#29 Re: Human missions » Rutan:  NASA is Dull » 2005-05-26 16:14:35

The more I see of T/Space, the more I'm impressed by them, but it seems as though their stated goals as a company are fundamentally flawed. They're aiming to reduce the cost of space travel, okay, that makes sense. At the same time, however, they are also trying to deal only with NASA, an organization that operates far differently from how they do. If they couldn't keep up with the paperwork NASA would have required for a CEV bid, I don't see why they'd be able to do the same for the CXV. T/Space is going to have a very difficult time getting anything done unless they become more flexable and more willing to adapt to the requirements of organizations like NASA.

It would be wonderful to have cheap access to LEO (relatively speaking), but unless the CXV can better fit with NASA's longer-term goals I don't see them getting the $100+ million a year they'd need to develop it. $100 million is a lot of money, especially for an administration that is now trying to pinch every penny it can to pay for its new long-term vision. If the CXV could be adapted for use on cislunar flights then it would have a much more solid shot at actually being developed. Otherwise, I just don't see NASA being willing to put so much faith in the alt.space community so soon.

#30 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-24 23:18:47

Hmmm. Perhaps I need to elucidate.
    When Rome was gradually conquering the known world, a general would return home in triumph after a decisive battle to receive the accolade of the Roman citizens. As he rode through the eternal city on his war chariot, in procession with cartloads of booty and slaves in chains, the thronging crowds would cheer wildly and throw flower petals in his path.
    Just in case this tumultuous scene of delirious adulation should turn the general's head, and give him ideas above his station, a slave rode with him on his chariot and, in a clear and reasoning voice, repeatedly murmured in his ear: "Remember thou art mortal. Remember thou art mortal. ... "

    That sentence has become a classical warning against hubris ever since.

I'd heard that story before with the line "All glory is fleeting," the line change just threw me off a bit. But it's the same general message, I suppose.

One final object lesson for the year from class before finals begin in nine hours: extreme pictionary is quite fun. Extreme pictionary is played much like regular pictionary (where one member from each team attempts to get his/her team to guess a word by drawing clues without using dialog, letters, symbols, or gestures), except for that two teams of at least thirteen each are pitted against one another, and the opposing team must think of a ridiculously hard word for the other team to attempt to guess. In five rounds, my team managed to eek out a 2-1 victory by correctly guessing "synecdoche" (hey, that stuff does come in handy) and "moot," and those were the easiest words we were given. This is why extreme pictionary only works in a high-language-density setting like an English classroom. But it might be fun to try it out wherever you happen to be stuck with a large group of people with little to do for an hour or so. Just a thought, anyways.

What is the first thing a person ever thinks?  ???

#31 Re: Human missions » Rutan:  NASA is Dull » 2005-05-22 15:46:37

If Scaled Composites ever does find a way to make orbital spaceflight reasonably cheap, it won't be with anything that resembles spaceshipone, but that doesn't mean it can't be done. Everybody knows by now that hybrid rockets don't have the isp needed to make SSTO spaceflight possible, let alone with a reusable launch vehicle, but there are other systems that can be used. Liquid oxygen and hydrogen aren't exactly the safest chemicals to play around with, but the fuel combination is efficient enough to make SSTO RLVs a possibility. It's all a matter of keeping the craft's empty weight under 15% of its gross weight.

This would not be practical for an air-launched system, and I'm sure that Burt Rutan is able to understand that. To go for orbit any daring alt. spacers will have to instead approach from the ground up, with LOX/LH2 or perhaps methane-fueled rockets. Global flyer already has a mass ratio very close to what a reusable single-stage to orbit launch vehicle would require, raising the possibilty that it could be feasible with today's technology. Granted, a reusable spacecraft will need life-support systems, a TPS, and the like that will all raise the amount of dry mass needed, but it won't need big long wings or control surfaces, further leveling the playing field. Hardly any of Global flyer's empty weight went into its fuel tanks, so its reasonable to think that even alotting for the much larger tanks required to store hydrogen and oxygen, the extra mass required here could  roughly be balanced by the mass saved by not having flight surfaces.

"No naysayers allowed!" ...Ahhh the motto of the AltSpace community. Without the naysayers, and without the AltSpace'ers taking the naysayers seriously, then they are just dreamers who will inevitibly fail, and rightfully so. Without naysaying, they should never be taken seriously, because they obviously aren't being serious about the challenge of spaceflight.

This is an excellent point. The alt. spacers need to be questioning themselves constantly as to what they can really do and how to best accomplish their goals. Nobody is ever going to get anywhere by sitting back and accusing all those who oppose them to be nay-sayers, just as nobody is going to get anywhere by sitting around pooh-poohing every iconoclastic idea they come across regardless of its potential merit. Skepticism is critical, but so is ingenuity. What's critical here is that the alt. spacers are able to adress any reasonable doubts about their capabilities. Always question, never defend. That's actually one of Rutan's mottos.

#32 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-22 15:28:30

"Remember thou art mortal! Remember thou art mortal!"   :;):

Eh, I suppose that's true enough.

#33 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-21 15:49:03

There's a moral to that story somewhere.  :hm:

What the hey, I like a challenge. The moral here is... probably something like shut up and get back to work. That's how I would interpret it anyways. Ordinarily I'm pretty good about finding morals in stories, you have to be good at it to stay in an English class whose title ends in the acronym "A/H/IB," which I believe stands for "Andvanced/Honors/International Baccalaureate." The name itself is a bit of a misnomer considering that there are a couple of Advanced Placement slackers in it as well. Come to think of it, why again is it that a class needs three different descriptors at the end of its name? :hm:

As it currently stands I will need to get a 58% or better on my final in that class next Thursday in order to earn my "A" this semester. Crunch time, indeed. smile  I'm one to talk, though, I really ought to be studying for French and Math right now, those two are going to be doozies. Chemistry I should be okay on, and for Physics and English I could probably skip studying entirely and still be just fine. Not that I will, mind you, but it's a fascinating hypothetical. What if there were no hypothetical questions?

While I'm talking about my English class there are a couple of other items of note. On thursday we took the http://www.humanmetrics.com/cgi-win/JTy … ers-Briggs Personality Type Indicator as part the career unit that is a necessary component of state standards. The idea behind this test (the above link is to a similar one if you want to see what the test is like) is that it splits you into one of sixteen different categories of people based on four personality factors. I was split between the INTJ and ENTJ types, which supposedly means that I could/should be an architect, lawyer, engineer, or credit investigator, among other things. Hmm, credit investigator, that's certainly a job I would probably never consider taking (no offense if any here happens to be one).

As for small victories, how's this? When I recieved my workbook back for Tess of the d'Urbervilles scribbled on the grading sheet in pretty blue ink was the note "I know you liked the book, superb journal,  smile" right next to the number 200/200. This is a very good number to have on a grading sheet. Doesn't it just make you feel all warm and fuzzy inside to recieve something like that after you've spent 30+ hours over the course of a month working on an assignment? Well, I did anyways.

Now the moral in that story shure would be an interesting one to find.

#34 Re: Human missions » Long duration Human space missions - Can we survive them? » 2005-05-21 15:26:19

The problem with using a "powerful propulsion system" (I assume you mean something like high-thrust ion engines or VASIMR plasma propulsion) is that there aren't any off-the-shelf mature was to do it for a Mars mission. If you want to keep the development time for such a mission under ten years, which will likely be the maximum politically acceptable time, the only currently viable options are chemical and perhaps nuclear rockets. With either option the trip time will be about six months at minimum both ways, but nuclear thermal rockets will allow more payload capacity.

This should be perfectly acceptable even if no simulated gravity system is used. We know that if they keep up a rigorous daily exercise regimen astro/cosmonauts can be reasonably fine after returning from stints on Mir longer than a year. Adjusting to one third Earth gravity after half this time in zero-g should be no problem at all, the only potential problem here is what kind of condition the crew would be when they return to Earth. Simulated gravity shouldn't be too difficult of a design problem in any case. By slinging a tether between the hab and a spent kick stage you can create huge spin arms that allow Martian gravity to be created by spinning at a more reasonable rate of 3-4 rpm. Tethers can break of course, but even if such an event occured it would not be as though something mission-critical were compromised.

Radiation is not as great a problem as some scientists studying it would like it to be. IIRC, Mars Odyssey recorded the radiation environment in Mars orbit to be just about twice as heavy as that of the ISS. While that won't win any safest workplace awards, it also should not compromise a 2-3 year long mission. On the surface, where a conjunction-class mission would be spending more than half its time, the radiation would be far less considering the atmosphere to block half of all radiation from the universe and all of Mars to block the other half. I would love to learn more about radiation and we do need to be careful ensuring that the crew is not put into a dangerously active environment, but these are not mission-killing difficulties. Chemical rockets are just fine for going to Mars.

#35 Re: Human missions » Rutan:  NASA is Dull » 2005-05-21 15:01:54

I'm all for the further privatization and commercialization of space, but I don't see how attacking NASA will accomplish that. At the core of the subject, NASA and the alt. space companies are both working for the same thing, creating an enduring human presence in the universe outside of Earth (which is where most of the universe just so happens to be). NASA takes this goal and adds to it the objectives of advancing earth and planetary science, astrobiology, and the like. Start-up companies add the goals of opening space up to everyone and making it "fun," so to speak. These missions are concomitant to each other, not contradictory, and the sooner people like Mike Griffin and Burt Rutan realize this the better.

#36 Re: Human missions » ISS Woes & To-Mars » 2005-05-15 20:45:41

Why in the devil is it this hard to build a space station? A consortium with over 40 years of experience operating space stations is building the ISS, and they can't even keep an oxygen generator running? Good greif, what is this solar system coming to?

#37 Re: Unmanned probes » New Horizons - mission to Pluto and the Kupier belt » 2005-05-15 20:41:49

They should have saved themselves the trouble and named it Voltaire.  When will people learn?!?   :angry:

I would have said Tess myself, but people might confuse that with the mini-TES aboard the MERs. This is why people like us will never name probes. :laugh:

In general acronyms are rather uninspiring, and there seems to be a shift in the way NASA's unmanned spacecraft are being named. Where we used to have names like Magellan and Galileo we now see names like Deep Impact, New Horizons and Oppy (well, the last one's just a loving nickname I suppose). Instead of great scientists and odd acronyms probes are now given movie-title type names. There's nothing wrong with that I suppose, it's nice to have a healthy change-up every once and a while, but it seemed pretty odd to me when I first read about these missions.

It's unfortunate that these nuclear-powered missions inevitably raise so much misdirected opposition. If you want to campaign against accidental nuclear material release that's fine, but it boggles the mind why one would pick nuclear-powered spacecraft to direct their campaign against. The odds of a launch vehicle failure are rather low (1-2%), and even in a worst-case scinerio barely any nuclear material would actually be released into the environment. Most of the plutonium would sink to the bottom of the Atlantic and promptly have just about zero effect on Earth's biosphere. Honestly, why can't these people just deride nuclear proliferation without hampering the greatest period of exploration in human history? :hm:

#38 Re: Unmanned probes » Mars Exploration Rovers (MER) » 2005-05-15 20:25:41

This problem Opportunity has worked herself into reveals how utterly awful robots are at exploring. Your average human would come up to a foot-high sand dune, maybe think "no biggie" and step right over it, while your average rover will work itself into a jam that takes weeks to get out of. It will be impossible for planetary exploration to be achieved to its fullest until we start putting people on those far-flung worlds.

That said, I sincerely hope Oppy manages to get out of this fine mess and keeps on trucking for a good long time. I've managed to become emotionally attached to these robots enough to refer to them as feminine rather than gender-neutral objects (something I ordinarily never do) when I'm being playful, and though I realize that they've already outlived their warranties by over a year it will be very sad when they bite the rusty Martian dust. Hopefully Opportunity will be out of this in no time and be back on her way to Victoria. Come on, Oppy, let's see what's on the other side of that sand dune. :;):

#39 Re: Human missions » Post central for information on CEV IV - Before thread #3 melts down » 2005-05-15 15:30:02

Welcome to New Mars, Xaliqen.

The idea behind the CEV is that it will be primarily a cislunar crew transport perhaps with the added ability to ferry crews and supplies to and from the ISS. Going from the ground to LEO and back is a whole lot easier than going to lunar orbit and back, so it shouln't be difficult at all for the CEV to fill in the ISS-servicing job as long as it exists. The only problem I see is that any lunar spacecraft will be somewhat overdesigned for use in LEO, but all you really have to do is swap out the radio and guidence systems with lower-quality (and cheaper) versions for use closer to home. This was exactly the plan for the Apollo post-lunar applications program before that was cut short after Skylab 4.

The problem with using the ISS for vehilce construction is that once the spacecraft is assembled it's stuck in a useless high-inclination orbit. It is very difficult and expensive to go from a 60+ degree orbit such as that of the ISS to the Moon or anywhere else. In order to beyond LEO efficiently you have to launch from a low-inclination, near-equitorial orbit or else the spacecraft ends up on a useless path that will take you nowhere. Because of this unfortunate bit of orbital mechanics the ISS is great for research but a really lousy place to launch an expedition from.

Going to Mars is so utterly different and more difficult a proposition than any other type of mission being considered today I don't see how anything designed for use on the Moon will be compatible with such a mission. We'll effectively need to start with a clean sheet, so developing a lunar architecture with an eye toward eventually expanding it towards Mars seems like a flawed idea to me. I'm all for talking about going to Mars right now, but it will take something far different from whatever takes us back to the Moon.

#40 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-13 23:04:05

I'm now 31 days away from becoming the first person in my family in at least four generations (perhaps many more) to leave the United States. Back in February I signed up for a 10-day trip to England and Scotland under the agreement that I pay for a substantial portion of the trip (which I have). For some people this wouldn't be too big of a deal, but considering how little anyone in my family travels this is huge, and I'm starting to jump up and down with excitment.

So far I've thought of a few souvenier opportunities I will take advantage of during this excursion. Among the options I'm considering:
1. Bring a copy of Tess of the d'Urbervilles to Stonehenge and take a photo of me holding it with the structure in the background. This will be fun because (a) an exceedingly important event occurs in the book at Stonehenge and (b) Stonehenge and Tess are both just too cool.
2. Since this trip will include my first ever flight on a 777, I may bring along my 1:500 scale Herpa model 777. This will add some fun sentimental value to the model considering that it will actually have been on a real version of itself, but I am a little worried about it becoming damaged or lost on the trip. In any case, it's a fun possibility to consider.
3. Eat a deep fried Mars bar. I will not leave the UK before I have had one!

It's funny, some people might look at a 10 hour+ flight across the North Atlantic Ocean as a torturous ordeal. Nothing could be further from how I'm viewing each flight. 10+ hours in a spacious, nearly sonic widebody jet with engines wider than the height of my ceilings is a terriblly romantic concept IMHO. I'll be loving every minute of each flight. And don't forget, no matter how disillusioned you may become with the current state of airline travel, there's always all the Tetris you can handle. big_smile

Cindy, have you ever watched any of the show Lost before? A while back I tried watching a little of Desperate Housewives, it didn't take, but there's something about Lost that keeps me coming back. I practically never watch TV anymore, but this is my one main exception. While some or perhaps many of the ideas that the show pushes are highly sketchy, the presentation is absolutely outstanding. I have never seen any television show with such high production quality, and the character portrayal is top-notch. One could go on an on about the flaws in the show, but something about it keeps me hungry for more, you may want to try watching some of it some time.

#41 Re: Not So Free Chat » Rockets:  The Good, The Bad, The Ugly - (To heck with boring utilitarianism!) » 2005-05-13 22:40:05

I agree about the color thing, though.  Right now, NASA will launch any color rocket you want as long as it's bland white.  The only exception is some crusted brown foam on a shuttle external tank - blech!  (It used to be bland white, though, which was actually worse.)  Whatever happened to that slick lunar module shine?  How about one of those cool grey and red Indian jobs instead?

The Deltas do have that wonderful green insulation on them, at least that gives them some personality. It's tough to beat the ice-on-stainless-steel look of the old ballon-tank Atlases, but those days are over for now. I do like the idea of doing an aborigone handprint on the shuttle, I've often thought that it will be a wonderful touch if one of these days someone makes such an imprint on a Moon rock.

#42 Re: Human missions » Post central for information on CEV IV - Before thread #3 melts down » 2005-05-13 19:07:41

Does anyone think any of these designs will do anything other than shuttle people to and from the ISS?

Well, that's the whole point now, isn't it?

#43 Re: Not So Free Chat » Rockets:  The Good, The Bad, The Ugly - (To heck with boring utilitarianism!) » 2005-05-13 18:22:08

The main reason why the shuttle is so bland to look at is because we've seen it over and over and over again for about 30 years now. It's become a symbol of everything space-related as far as the general public is concerned, and so it gets worked into just about everything that wants to look "cool," so to speak. Only among groups of space advocates such as New Mars is the shuttle scorned, as far as I can tell. Everyone else is either ambivalent, violently against, or mildly for space but don't know the difference between an Iridium flare and a barn door and hence view the shuttle as the poster child of NASA's positive accomplishments. Ah, the irony.

Maybe it's just me, but I have no problem with the asthetics of today's rockets. It's what the rocket symbolizes, not its "look," that makes it beautiful. These beasts spend months in construction, testing, and integration at the hands of bunny-suited technicians and then are filled full of volatile cryogenic fuel and launched fast enough to leave the planet. Entirely, forever. Is that wild or what? cool

Whenever I look at an image of a current launch vehicle I always mentally try to break it down and see its inner workings. There is absolutely nothing magical or ethereal about rockets, the whole field has now been reduced to a business that is integral to our daily economy. As far as I'm concerned that adds to the beauty of rocketry because we can fundamentally understand it. Launching rockets is without a doubt the single most impressive technical accomplishment humans have ever achieved so far. It may sound weird, but I always get a little bit of that warm fuzzy feeling inside for the human race every time I'm able to watch a webcast of a sattelite launch. Wait, that probably is just me.

True spacecraft themselves (sattelites, probes, etc) are also beautiful IMHO in their own way. Operating beyond the last vestiges of Earth's atmosphere they are completely unbound by wind resistance, weight, and the like, as anybody can see in their design. Sattelites are fascinating machines, part aircraft, part robot, part spaceship, they have to do many things and look great doing them. Besides, you just can't beat that polished-gold look.

#44 Re: Human missions » Post central for information on CEV IV - Before thread #3 melts down » 2005-05-13 17:57:47

The fact that Andrews Space has entered a final CEV proposal along with Northrop Gruman/Boeing and Lockheed Martin is fascinating. T/Space was likely the only alt. space company that ever had much of a chance of making it at least to the flyoff stage of the CEV competition (which apparently will no longer occur if Micheal Griffin has anything to do with it), but Andrews has persevered and come up with an impressive proposal. Their suggestion of using an Atlas core with "Zenit strap-on boosters," while original, has just about zero chance of ever being taken seriously by anyone, and shows that they most likely realize that they cannot win in the face of competition such as Boeing and LockMart.

However, Andrews did recieve a substantial amount of money ($18 million) to demonstrate technologies for a cislunar cargo tug with the smattering of exploration contracts NASA handed out last month. "Demonstrating technologies" could mean anything, and likely won't lead to any flight hardware for some time to come at the very least, but it is an encouraging sign that NASA is reaching beyond its traditional contractor base. XCOR also recieved a contract of their own; these are likely harbingers of the future of NASA's relationship with private companies. It's heartening to see the government, big three aerospace, and alt. spacers working together for a common goal.

I really don't like the idea of sticking the CEV atop a shuttle SRM coupled with some upper stage. Aside from the very real issues of controlling the acceleration and the inherant danger of handling large solid rockets (they tend to blow up at the most inopportune moments), it will be very difficult to make the LV safe enough to use. As long as NASA follows its own guidlines the SRMs have shown themselves to be reasonably safe, but when something goes wrong on a solid rocket there's generally much less warning than one would have working with liquid engines. It would be an abort system nightmare, but perhaps it could be done.

Of the proposals submitted, Boeing by far looks the strongest. I don't see why Lockheed wouldn't have taken the VSE seriously, there are potentially billions of dollars worth of contracts to be had. However, I do agree, it appears as though they just didn't spend as much effort as Boeing did in developing a detailed beyond-LEO arcitecture. Of course, considering Griffin's comments on accelerating the CEV schedule, none of this may matter at all in the long run.

#45 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-05 23:58:21

Plus .. I think you should try and get out more.  big_smile ]

Indeedy. big_smile

Yep yep, believe me, I wish I got out more probably more than anyone else. More than anyone else, I am also aware that this ain't gonna happen. I don't mean to start a debate over who has it harder than everyone else, but it is dastardly hard to keep up with the kind of schedule I have and I simply don't have the time to go out and socialize very much. Moreover, I don't mean to sound like a conceited elitist, but I'm really way ahead of pretty much everyone else my age developmentally speaking. It's fascinating to watch; my peers are just now shedding the final vestiges of their cootie-fearing, childish ways and are starting to learn that members of the opposite gender really are people, too (no really!). Meanwhile, I'm sitting over here checking my watch waiting for opportunity's knock. You can be proactive as you want, but ultimately if the other end isn't ready it's not going to work. The upshot is, I still have my junior and senior years ahead of me to get this social mess sorted out before I'm out and about and on my own at a university. Fun stuff.

As far as intelligence goes, don't worry about me letting that stuff go to my head. I don't like to bring up my age except when I have to contextually or it just makes sense to do so. The wonderful thing about the internet is that you have absolutely no idea what the people you're talking to are like, and as such you have a completely unbiased opinion of them. Hopefully my age doesn't skew how my points are taken, but I can't help but wonder if it occasionally does so. Pretend I'm just another schmo you happen to be chatting with on the vast intellectual ocean of the internet. But I do enjoy being flattered. :;):

I think it's safe to say that we don't have to worry about my becoming a cross-dresser. As far as I can tell I'm the sanest person I know, and I'll do my best to keep it that way. Insanity, cross-dressing... It's just not me.

If nothing else my dream does shatter a few preconcieved notions about REM dynamics (is that even a term? Do I care? Probably not). At one point during our lively little walk I stepped on a thorn, and youch! I was barefoot at the time and, man, it felt exactly like stepping on a sharp object in the real world. So much for that whole dealy about you can't feel pain in a dream. The thing that keeps coming back to me about this dream is how real the feelings were, something that's rare for me. Now, I've never been walking on a chilly, breezy, humid night barefoot in an immaculate white skirt before, but you sure could have fooled me. To preempt your next question, barring any unforseen future events (such as my spontaneously becoming a charming young brunette with sparkly dark brown eyes [which admittedly would be pretty neat]) I will not be testing this in the real world. There are just some things that you can only do in dreams...

Well, I have an AP European History Test to prepare for. Wish me luck.

#46 Re: Not So Free Chat » Fate and happiness » 2005-05-05 21:35:42

Well, this is a fascinating topic, isn't it.  smile

The fact of the matter is that the Universe is really big. Super big- you just really won't believe how big it truly is. As a result, each individual can only affect a miniscule fraction of the Universe, and the rest just goes about its business as usual. As a result there are of course unforseen forces that affect all of us, which I suppose could be interpreted as fate, but just as strongly we all have a sphere of influence that can directly affect our futures much more than the hand of lady luck can.

One of my favorite examples of this dichotomy is the fortunate/unfortunate result of United flight 232. On the way from Los Angeles to Chicago a component in the fan disk of the plane's number 2 engine (it was a DC-10, so this is mounted in the tail) gave up the ghost and the turbine promptly disassembled itself in a fraction of a second. Ordinarily this is rather pedestrian as far as in-flight emergencies go, a simple matter of shutting down the engine and landing at the nearest availible runway. Unfotunately for these guys, though, the debris from the engine just happened to shred through all three of the redundant hydraulic systems in the airplane. Within 14 seconds the crew had absolutely zero control over the airplane, the most disastrous worst-case scinerio of which anyone could conceive. That's one huge piece of rotten luck, to say the least.

However, this is where things get really interesting. The flight crew did get a good smack across the face by the hand of fate, but they dealt with it beautifully. By throttling the two remaining engines they were able to regain some control, enough to put the plane on the runway, at least. Unfortunately there were many onboard who didn't survive the ensuing splat (the video of the "cartwheeling" DC-10 on fire is now infamous), but two-thirds of the passengers walked away practically uninjured. We are not mere slaves to fate, there is always an opportunity to get out of any tight spot if we are quick enough to see it.

As for happiness, it seems to me that many people have an ingrained reflex against it for some odd reason. Among my co-workers (or classmates, whichever term you prefer) there is a never-ending deluge of complaints about every possible subject under the Sun. If you try to cheer them up they either start lamenting about how rude you are or inquire as to if you have recently consumed any illegal drugs. Lousy bunch of weirdos... roll

For some reason, fate and sadness are two elements that seem intrinsic to human nature. It's as though people don't want to accept responsibility for their lives and can't find anything to give them pleasure during their few short years in this world. Maybe they just don't know themselves well enough to find what makes them happy. Perhaps pessimism is a quality they've picked up from their peers. Whatever the reason, I'm very thankful that I don't have either of these personality traits. We all have the power to intimately affect our futures and find happiness. Or to squander these precious potential gifts. Whichever you do is your decision.

C'mon, live a little. cool

#47 Re: Not So Free Chat » Apropos of Nothing *4* » 2005-05-05 21:11:28

Very, very few people have a real understanding of how the Universe works. Okay, nobody even comes close to fully understanding every intricacy and nuance of its history from big bang to today, but there's a select especially curious group that at least understands the basics in Universe 101. Maybe one in ten thousand people worldwide at most have a working knowledge of the sequence Big Bang- Atoms- Giant Gas Clouds- Big Stars- Bigger Atoms- Big Black Holes (lots of big stuff)- Heavy Metal- Galaxies- Sun- Planets- Oceans- Bacteria- Fish- Us. If you can truly imagine what the Universe is like I don't think it is possible to have a profoundly negative outlook on it, or to not help but marvel at its raw intrinsic beauty. Well, that's just me anyway. Thomas Hardy didn't understand the universe, and he was an overbearing pessimist.

Hardy, of course, is the author of the Victorian masterpieceTess of the d'Urbervilles, which I have recently completed reading for IB English 3-4. The book is absolutely stunning from a literary standpoint, the writing is delightful to read and the characters are compellingly life-like, but comes up far short as far as philosophy goes. Hardy goes to great lengths to produce wonderful loveable but flawed characters and a gripping story, and then makes every attempt to trash it by assaulting the reader with the message that life is worthless/meaningless, you'd be better off if you'd never been born, etc. It's still a great read, but the guy has been bugging the heck out of me for the last month. Writing a 35 page journal devoted to analyzing Hardy, his philosophy, and his writing style also helped to bug me during April. But whatev.

While we're talking about Tess and soap-opera worthy plots, there's another event I'll mention. During the first phase of Tess (out of seven) I was having a little bit of trouble nailing down the title character's look exactly, so I tried out a mental exercise to do so. Before I picked up the book I would imagine her actually in the room, run a few test lines (invariably something like "I don't care if 'tis dozens of miles to Trantridge!"- don't ask, you'd kinda have to read the book to get it), get the physics worked out (which usually consisted of some walking, twirling, and hair rearranging), and dive right in. As a result, I inadvertently created a Tess Durbeyfield who is exceedingly lifelike, perhaps a little too much so.

This actually does lead somewhere. Anyways, the other night I had the oddest dream. I won't give away any spoilers, but suffice it to say that there's a pivotal scene in the book where, after making a confession on a previously romantic evening by a roaring fire, Tess distresses her companion and he walks out. She later on follows him, and they share a discussion about something intimately related to plot spoilers. I know this because: (A) I read the book, and (B) I have vicariously lived through this scene in the aforementioned dream.

Usually my dreams have some strange quality to them that one can't quite pin down in the dream, but obviously nails it as a dream once I wake up. This dream had none of that. Every single thing about it, the look, the sounds, the feel of it was hauntingly real. Now here's the really interesting part, during the dream I was Tess Durbyfield. This is a little bit interesting considering that we share very little in common with each other physically and she just so happens to be the opposite gender that I am. Kind of freaky when you think about it.

You would think that commanding such a wildly different body for the dream time would be a disorienting experience, but it wasn't in any way at all for me. It was as though for those few glorious hours (dream time, it was probably a few minutes real-world time) I had absolutely no memory of being a lanky 16-year-old male from Phoenix and had rather held possession of this strikingly beautiful brunette from lower Wessex all of my life instead. Evidence of a past life? That would be fun to believe, but unlikely. The bottom line is that (1) I had a really cool dream a few nights ago and (D) I need to make shorter posts.

One memorable quote:
"Angel, snap out of it. I'm talking real world here, not some fantasy dream world. It's your choice whether you leave or not, and you're setting us both up for really bad stuff if you do. It could happen."
-Me (not Thomas Hardy)

That quote is kinda ironic considering that it actually was said in a fantasy dream world. But perhaps still pertainant to this world. I'm personally quite fond of this world and wouldn't trade it for all the tea in China. Dreams are fun but ultimately a distraction from the sheer outright wonder of the real Universe. So... am I officially crazy yet?

You just can't make this stuff up. big_smile

#48 Re: Human missions » Post central for information on CEV III - Continued from previous » 2005-05-03 18:13:50

Obviously, Lockheed Martin is looking at the long-term picture and trying to come up with a CEV concept that will be suitable all the way to manned Mars missions. Or at the very least, this is the image they are attempting to project. I'm not really sure why you'd need six solar pannels, a big radiator, and that extra cylindrical hab module for simple quickie trips to the ISS or the Moon; hopefully these are elements that would be absent in such a CEV. Remove the extra solar pannels from the lifting-body portion and the hab module and that would be perfectly fine for missions through spiral 2 of CEV development, and them in and the LockMart concept could potentially be used for more complex missions.

I really don't see how you could use anything remotely resembling an Earth-Moon spacecraft for a Mars mission. The two are such completely different ball games I can't even begin to imagine all of the components that would need to be changed out or upgraded for use beyond the Moon. You might as well just start with a clen-sheet design. In light of this, the entire CEV spiral development program seems fundamentally flawed. It will be such a massive jump from "extended lunar stay" missions to manned Mars exploration, we might as well not even bring Mars into the equation while we're still talking about the Moon. That said, I'm stumped as to why LockMart has created such a convoluted CEV concept, beyond the fact that it will make them look like the forward-thinking company of the bunch.

If all else fails, we still have Northrop Grumman to count on to come up with a decent CEV. Whichever company formulates a better concept ought to win out through natural selection in the end, so I'm not too worried about the CEV's development proceeding rahter smoothly. As long as Bush is in office we can rest assured that the funds, at least at previously advertised levels, should be there, so I'm not fretting as much as I did in the past about the CEV going the way of the X-31/3/4/7 and the like. Something is going to be created that will not be the Space Shuttle, at least we can be certain of that.

#49 Re: Human missions » Finally, a sensible solution to the Hubble debate - ... that we can all agree on...maybe. » 2005-05-02 23:10:05

By the way, what happened to all the other? We two seem to be hogging all the space. I know and like you, after all this time, especially because we seem to compliment one another (patting my own back) so what the hell gives?

Who me? Well, last week... never mind, if I tell y'all why I haven't even logged on the internet over the course of the last seven days, it'll just incite one of those weird "my work's harder than yours!" debates. Apples to oranges stuff, really. Moving on.

I'm a card-carrying member of the Hubble hugger club, but I have to say that GCN does seem to have the upper hand here. I couldn't care less about the Hubble space telescope itself; what I do care about is access to those elucidating, insightful, and downright gorgeous visible/UV spectrum photos. It's delightfully good science, fun, and some philosophy all rolled into one. Science of course is the operative component of the equation here. No matter how you look at it, Hubble is nearing the end of its useful life, and the scientific community stands to gain much more from a brand-new telescope with its whole life ahead of it than an old one that will inevitablly break down no matter how many times it's serviced.

Unfortunately, it seems to be an either/or scinerio. Either Hubble is serviced, and five or so years of vis/UV space observations are gleaned, or a replacement can be launched with ten or more years of observation time ahead of it, with a gap of a few years in capabilities between Hubble and the replacement. Given the choice, putting those observations on hold for a few years sounds like the better option considering that a telescope such as HOP will allow astronomers a fresh start with plenty of years of good scope time ahead of them. That can't be said for Hubble. Overall, replacing rather than servicing Hubble appears to be a far better option.

#50 Re: Human missions » ISS Woes & To-Mars » 2005-05-02 22:54:31

One would think that after three decades worth of experience each with space stations from Salyut to Skylab to Mir that building and operating an outpost like the ISS would be old hat for either NASA or the Russian space agency alone, let alone with a multinational partnership to help out. Apparently not. The ISS is an object lesson in how really hard it is to do anything in space, and the headaches that bringing in too many heads on one project can cause. But no matter, JAXA, the ESA, and congress will not allow NASA at this point to cut its losses and pull out of the construction process, so we might as well make the most of it.

There has to be something of useful scientific value that the ISS can do besides subjecting astronauts to zero-gravity high-radiation conditions and seeing what happens. Prior to begining construction I remember NASA droning on and on about all of the wonderful things the ISS would do as a laboratory once finished, and later on that it could actually do all of these things provided an occupancy of at least five or six astronauts. I'm not an expert in zero-g product research but it seems to me that we've barely scratched the surface of all the wondrous discoveries that might be made in this unique (at least for now on the ISS) environment. Now, I'm not saying that it will help us on the road to colonizing the solar system, but there's still plenty of good work that could potentially be done on the ISS. Maybe in its origins it was just a justification for the shuttle, but hopefully we can turn it into something useful now that it's there.

I don't deny that the International Space Station, once completed, will contribute to Mars colonization about as much as NASA's aeronautics research, that is, pretty much nil. However, NASA is a big organization with many obligations to fullfill, space exploration and utilization is just one of them. Hopefully we can finish the ISS and pipe its budget into manned exploration as soon as possible, but until then there must be a better solution than merely sitting around deriding the station. NASA employs some of the best engineers and scientists in the world, they must be creative enough to think of something to do with a massive $100 billion orbital outpost. It sure seems like a heck of a waste of that money to just sit around wishing we'd never built the thing.

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