"An enduring classic, this book offers a dramatic and prophetic look at the potential consequences of the escalating destruction of Earth. In this nightmare society, air pollution is so bad that gas masks are commonplace. Infant mortality is up, and everyone seems to suffer from some form of ailment. The water is polluted, and only the poor drink from the tap. The government is ineffectual, and corporate interests scramble to make a profit from water purifiers, gas masks, and organic foods."
Dude....I'm just guessing but I'm thinking that you'll be making that work commute in your flying car (by Moller of course) before you'll be walking around with that artificial eye......
It seems that, once again we are unnecessarily endangerig the lives of astronauts for the political expedient of not wanting to abandon what the politicos spent so much money on. Isn't it time to bring these guys back before we have anothe wo entirely unnecessary deaths?
NASA lost it's brains in the 80"s but has it entirely lost it's heart as well?
If you use WHOIS to look up the domain registration for ilovebees.com it has the following information:
Margaret Effendi (ladybee777@hotmail.com) 2370 Market Street #510 San Francisco CA 94114-1575 Phone: (415) 248-2617
I live in San Francisco and used to live at that address. It is the Fox Plaze apartments. a 28 story building" and the 8th floors and below are devoted to commercial offices. The lease rates are quite high and most of the offices are filled by affluent companies. I'm tempted to go over to #510 and see what ofice is there. I'd bet my DVD drive that it's a marketing company {g}
--You can leave as slow as you want and pick up -- the orbital velocity later, or just hover on --your engines and never pick up any speed at --all. Not that you'd want to.
Why not just increase power to the pattern buffers instead? Because that makes as much sense as what you just said.
You CAN'T just "go as slow as you want and then increase speed later". All these things take reaction mass and the AND REACTION MASS MEANS MORE WEIGHT...which means more reaction mass....which puts a VERY definite and basic limit on what you can achieve using a fuel with a given specific impulse in a single stage rocket.
You can NOT just "pour on more speed later" as many of the less informed posters here seem to think (including one self proclaimed "rocket scientist" (g) ). Speed takes fuel and fuel means weight...more speed means more weight which means more fuel which means lower accelerations which mean more fuel...which means more weight........which is why it takes CALCULUS to calculate the equations of such flights and how much fuel it's going to take.
"More power Mr. Scott!" just won't cur it I'm afraid. There are limits as to what a particular design ans a particular FUEL can achieve.
-Let me just give my background for disclosure - -I'm a rocket scientist.
-However, if you provide a continual thrust that - everywhere is greater than the local -acceleration due to Earth's gravity, you will never fall back down. You could achieve this at a -constant velocity of 1m/s if you liked, by -suitable modification of the thrust.
Since you confuse the issue of ACCELLERATION and VELOCITY you most certainly ARE NOT a rocket scientist.
Your "argument" discounts the very basic elements of weight vs.specific impulse. And in order to "never fall back down" you MUST eventually achieve a speed of ~25Kmph or you most certainly WILL fall back down. I know you don;t understand any of this but it's true none the less.
Sorry kid...better luck next time...Mr. "rocket scientist"
--More importantly: The speed it climbs at says --NOTHING about whether or not it would be able to -- handle higher speeds if they were willing and -- ready to take the risk and use the extra fuel -- once they're up there.
Sorry but that's Star Trek science. You can't just carry "more fuel". More fuel is more weight...which means more fuel...which means more weight...which puts a limit on what speed the craft can actually EVER achieve and I suspect that it's current design has it running at it's max theoretical speed.
Also the craft is built out of composit materials...which will melt into a nice blob at speeds not much more then he's flown already.
You can't just "go real high" and then "go faster" - YOU NEED FUEL AND REACTION MASS FOR ALL THOSE THINGS and then you need MORE FUEL to slow back down again....or a REALLY good heat shield.
It's little wonder to me that a generation who grew up on "Bermen and Braga" science on TV doesn't understand the difference between what Rutan has done and what's REALLY NEEDED to actualy build a REAL sub-orbital (let alone orbital) craft. Hell one poster commented here how even the NEWSCASTERS didn't get what's going on.
Sorry but your knowledge of basic high school physics (first semester) is appalling (leads me to believe that you're a little young ).
#1. YOu are simply incoprrect when you say that you do NOT have to reach 25,000 (or Mach 25 as you out it) to escape Earth's gravity because of the *engines* on a craft sigh). In point of fact you simply DO.
#2. You are incorrect when you say it's "trivially easy" to build up speed outside the atmosphere. Newton's laws still hold whether inside or outside the atmosphere...and you STILL have to carry the reaction mass up there somehow.
The rest of your post is (unfortunately) just a layperson's opinion about physics and I'm sorry but a rather poor opinion at that.
My karma's probably blown now for this post but I have a thing for truth....
>I never thought that my generation (I'm 26) >would see commerical space flight in our life > time
You still haven't I'm afraid. Rutan has built a vehicle that can attain a 60 mile altitude...AND COMES IMMIDIATELY DOWN again.
What's he's done is little different from shooting a man out of a slick looking cannon that can happen to blow him 60 miles high.
To actually ORBIT a craft must reach about 18,000 mph give or take....rutan's craft can only go about 1,500 mph....not even 10% of what's needed to achieve orbit.
And don't forget...to go that fast you need special materials to withstand the heat effects (>1000 degrees F) that occur at such velocities when back in atmosphere.
Rutan's kind of a hero of mine but I am forced to keep things in perspective. He's built a BIG cannon that can launch someone 60 miles high nd come back down again...but he's NO WHERE NEAR achieving a true suborbital flight which needs HORIZONTAL velocities AT LEAST 5 to 10 times what he could possibly hope to achieve now with his current design.
He'll win an X-Prize..but he needs another vehicle design to make a REAL space ship. IMHO there's a BIG hype factor going in here.
Ummmm...you missed the point. What Rutan has built is a vehicle that goes really high for a few minutes BUT isn't ANYWHERE close to achieving an orbital (or even suborbital) capacity.
Once again:To do that you need a HORIZONTAL speed in the range of 10K-15K mph for a subprbital flight and about 18K mph to achieve orbit. The MAX speed of SS1 is a little over 1K MPH.
This is why there's no heat shielding on SS1 and why it can be made of composites. Any composite craft (using current trch) would MELT entering atmosphere at anything NEAR orbital speed.
RUTAN made a great SYMBOLIC effort but there is ZERO chance that his design can achieve orbit. He's built a vehicle that touches space for a few minutes and COMES BACK DOWN. There's simply not much you can do scientific or tourist wise with such a flight path.
Bottom Line: Fun Ride. Not Very Useful. (in my opinion of course)
Don't get me wrong - Rutan's done a wonderful thing but....to reach orbit you have to hit about 18,000 mph (even a true suborbital flight needs about 10,000 mph or so depending on the distance you want to go)....so if we ballpark Mach 1 at 600 just for a rough estimate's sake then you need to go about Mach 25 or so to really reach orbit.
The MAX speed of Spaceship one is Mach 3 so this design has NO potential (as I see it) to EVER make anything near a true suborbital flight of any real distance let alone achieve orbit.
It's a wonderful SYMBOLIC effort and I applaud it but lest anyone feel that trips around the Earth are just around the corner now.... well.....
Sorry to burst anyone's bubble:(
Why Didn't Kylix Sell?
on
Kylix in Limbo
·
· Score: 5, Insightful
Maybe it had something to do with the 1000+ price you had to pay for the full developer version? You think?
Oh yes, Borland has come a long way since Phillipe's idea of a full blown compiler as good (if not better) than anything on the market for 99 bucks. Gone are the days of Turbo Pascal and Turbo C... hello to increasing "Shareholder Value".
And Helloooo to you too linux you cutie...you're looking better by the minute!
I'm personally on favor of gun controls myself but I'M EVEM MORE IN FAVOR of freedom of speech and expression.
Whether you are "pro-gun" or in favor of controls doesn't matter a whit. Hopefully we can ALL agree that, though we may not always agree on each other's ideas, we need to work together to defend our means of expressing them.
I've got to agree, speaking as a (former) computer engineer who happens to be female, the no-mixed gender idea is both antiquated and very subject to eventual abuse if (ha!) the young girl's groups receive less focus.
When I go to see a movie in the theatre, I pay more for the 'experience' then the actual movie
Would that be the experience of buying 20 cents worth of popcorn for $3.25 or the experience of reliving your old college frat parties as soles of your shoes stick to the floor that hasn't been cleaned since late last week?
Or maybe you mean the thrill of shelling out $8.75 for the latest "blockbuster" sratting Pauley Shore?
According to the actual article (sigh) the trail in question is by no means considered to be a meteor trail but more likely an airplane contrail reflecting the setting sunlight.
Come on SlashDot...let's not turn into the National Enquirer in our search for articles OK?
> I hope he likes pizza. >And porn subscriptions...
Geez...why not send him a couple of hookers and a pack of cigarettes while you're at it? Somehow I don't think guys of his ilk would object to a few pizzas or free pron...........now if you really wanted to piss him off I suppose one could call the local Akron $cientology/Mormon/7th Day Adventists...etc chapters, feign interest and arrange for a nice Sunday morning get together at his house.
Never attribute to conspiracy.....
on
Blaster Writer Caught
·
· Score: 2, Insightful
....what can just as easily be attributed to stupidity.
I guess this puts a finish to the "spammers are releasing viri into the wild" theories??
Well, it would seem to me that the music listeners and the music creators needs to get together using the internet as a transport tool. About the only way to do that is to setup a website and distribution network that allowed the music listeners to interact with and support the artists
I can't help but wonder if a high tech civilization using fission, fusion, antimatter and who knows what.... would generate high levels of nutrino flux and if results from detectors such as these could be used as a device to detect such?
That's because Canada is a civilized country... Out here in the Bush...it's another matter entitely....
Re:dang, I need a jumpstart...
on
42-Volt Autos
·
· Score: 1
I think that all you'd need is a voltage tripler circuit - no biggie. I would envision a hot-jump "port" on such vehicles that would sense if a 12 volt supply was being used and then up up the voltage to the starter (if needed) accordingly. So you would buy a set of jumper cables that would have standard alligator connectors on one end and the "port" connector on the other for 12 -36 volt situations.
Makes sense really...don't see why we don't have such hot jump ports on autos now instead of connecting from battery to battery directly which is more dangerous then people think. I've seen one battery explode already in someone's face once and I'm sure it happenns not infrequently to people each year.
Slashdot Mirror
Seems pretty much like now to me ?? !
Dude....I'm just guessing but I'm thinking that you'll be making that work commute in your flying car (by Moller of course) before you'll be walking around with that artificial eye......
It seems that, once again we are unnecessarily endangerig the lives of astronauts for the political expedient of not wanting to abandon what the politicos spent so much money on. Isn't it time to bring these guys back before we have anothe wo entirely unnecessary deaths?
NASA lost it's brains in the 80"s but has it entirely lost it's heart as well?
If you use WHOIS to look up the domain registration for ilovebees.com it has the following information: Margaret Effendi (ladybee777@hotmail.com) 2370 Market Street #510 San Francisco CA 94114-1575 Phone: (415) 248-2617 I live in San Francisco and used to live at that address. It is the Fox Plaze apartments. a 28 story building" and the 8th floors and below are devoted to commercial offices. The lease rates are quite high and most of the offices are filled by affluent companies. I'm tempted to go over to #510 and see what ofice is there. I'd bet my DVD drive that it's a marketing company {g}
--You can leave as slow as you want and pick up
...which means more weight.... ....which is why it takes CALCULUS to calculate the equations of such flights and how much fuel it's going to take.
-- the orbital velocity later, or just hover on
--your engines and never pick up any speed at
--all. Not that you'd want to.
Why not just increase power to the pattern buffers instead? Because that makes as much sense as what you just said.
You CAN'T just "go as slow as you want and then increase speed later". All these things take reaction mass and the AND REACTION MASS MEANS MORE WEIGHT...which means more reaction mass....which puts a VERY definite and basic limit on what you can achieve using a fuel with a given specific impulse in a single stage rocket.
You can NOT just "pour on more speed later" as many of the less informed posters here seem to think (including one self proclaimed "rocket scientist" (g) ). Speed takes fuel and fuel means weight...more speed means more weight which means more fuel which means lower accelerations which mean more fuel
"More power Mr. Scott!" just won't cur it I'm afraid. There are limits as to what a particular design ans a particular FUEL can achieve.
-Let me just give my background for disclosure -
.
...Mr. "rocket scientist"
-I'm a rocket scientist.
-However, if you provide a continual thrust that
- everywhere is greater than the local
-acceleration due to Earth's gravity, you will never fall back down. You could achieve this at a
-constant velocity of 1m/s if you liked, by
-suitable modification of the thrust.
Since you confuse the issue of ACCELLERATION and VELOCITY you most certainly ARE NOT a rocket scientist
Your "argument" discounts the very basic elements of weight vs.specific impulse. And in order to "never fall back down" you MUST eventually achieve a speed of ~25Kmph or you most certainly WILL fall back down. I know you don;t understand any of this but it's true none the less.
Sorry kid...better luck next time
--More importantly: The speed it climbs at says
--NOTHING about whether or not it would be able to
-- handle higher speeds if they were willing and
-- ready to take the risk and use the extra fuel
-- once they're up there.
Sorry but that's Star Trek science. You can't just carry "more fuel". More fuel is more weight...which means more fuel...which means more weight...which puts a limit on what speed the craft can actually EVER achieve and I suspect that it's current design has it running at it's max theoretical speed.
Also the craft is built out of composit materials...which will melt into a nice blob at speeds not much more then he's flown already.
You can't just "go real high" and then "go faster" - YOU NEED FUEL AND REACTION MASS FOR ALL THOSE THINGS and then you need MORE FUEL to slow back down again....or a REALLY good heat shield.
It's little wonder to me that a generation who grew up on "Bermen and Braga" science on TV doesn't understand the difference between what Rutan has done and what's REALLY NEEDED to actualy build a REAL sub-orbital (let alone orbital) craft. Hell one poster commented here how even the NEWSCASTERS didn't get what's going on.
Sorry but your knowledge of basic high school physics (first semester) is appalling (leads me to believe that you're a little young ).
#1. YOu are simply incoprrect when you say that you do NOT have to reach 25,000 (or Mach 25 as you out it) to escape Earth's gravity because of the *engines* on a craft sigh). In point of fact you simply DO.
#2. You are incorrect when you say it's "trivially easy" to build up speed outside the atmosphere. Newton's laws still hold whether inside or outside the atmosphere...and you STILL have to carry the reaction mass up there somehow.
The rest of your post is (unfortunately) just a layperson's opinion about physics and I'm sorry but a rather poor opinion at that.
My karma's probably blown now for this post but I have a thing for truth....
>I never thought that my generation (I'm 26)
>would see commerical space flight in our life
> time
You still haven't I'm afraid. Rutan has built a vehicle that can attain a 60 mile altitude...AND COMES IMMIDIATELY DOWN again.
What's he's done is little different from shooting a man out of a slick looking cannon that can happen to blow him 60 miles high.
To actually ORBIT a craft must reach about 18,000 mph give or take....rutan's craft can only go about 1,500 mph....not even 10% of what's needed to achieve orbit.
And don't forget...to go that fast you need special materials to withstand the heat effects (>1000 degrees F) that occur at such velocities when back in atmosphere.
Rutan's kind of a hero of mine but I am forced to keep things in perspective. He's built a BIG cannon that can launch someone 60 miles high nd come back down again...but he's NO WHERE NEAR achieving a true suborbital flight which needs HORIZONTAL velocities AT LEAST 5 to 10 times what he could possibly hope to achieve now with his current design.
He'll win an X-Prize..but he needs another vehicle design to make a REAL space ship. IMHO there's a BIG hype factor going in here.
Ummmm...you missed the point. What Rutan has built is a vehicle that goes really high for a few minutes BUT isn't ANYWHERE close to achieving an orbital (or even suborbital) capacity.
Once again:To do that you need a HORIZONTAL speed in the range of 10K-15K mph for a subprbital flight and about 18K mph to achieve orbit. The MAX speed of SS1 is a little over 1K MPH.
This is why there's no heat shielding on SS1 and why it can be made of composites. Any composite craft (using current trch) would MELT entering atmosphere at anything NEAR orbital speed.
RUTAN made a great SYMBOLIC effort but there is ZERO chance that his design can achieve orbit. He's built a vehicle that touches space for a few minutes and COMES BACK DOWN. There's simply not much you can do scientific or tourist wise with such a flight path.
Bottom Line: Fun Ride. Not Very Useful. (in my opinion of course)
Don't get me wrong - Rutan's done a wonderful thing but....to reach orbit you have to hit about 18,000 mph (even a true suborbital flight needs about 10,000 mph or so depending on the distance you want to go) ....so if we ballpark Mach 1 at 600 just for a rough estimate's sake then you need to go about Mach 25 or so to really reach orbit.
:(
The MAX speed of Spaceship one is Mach 3 so this design has NO potential (as I see it) to EVER make anything near a true suborbital flight of any real distance let alone achieve orbit.
It's a wonderful SYMBOLIC effort and I applaud it but lest anyone feel that trips around the Earth are just around the corner now.... well.....
Sorry to burst anyone's bubble
Maybe it had something to do with the 1000+ price you had to pay for the full developer version? You think?
... hello to increasing "Shareholder Value".
Oh yes, Borland has come a long way since Phillipe's idea of a full blown compiler as good (if not better) than anything on the market for 99 bucks. Gone are the days of Turbo Pascal and Turbo C
And Helloooo to you too linux you cutie...you're looking better by the minute!
I'm personally on favor of gun controls myself but I'M EVEM MORE IN FAVOR of freedom of speech and expression.
Whether you are "pro-gun" or in favor of controls doesn't matter a whit. Hopefully we can ALL agree that, though we may not always agree on each other's ideas, we need to work together to defend our means of expressing them.
I've got to agree, speaking as a (former) computer engineer who happens to be female, the no-mixed gender idea is both antiquated and very subject to eventual abuse if (ha!) the young girl's groups receive less focus.
Come on guys...welcome to the 21st century!
Would that be the experience of buying 20 cents worth of popcorn for $3.25 or the experience of reliving your old college frat parties as soles of your shoes stick to the floor that hasn't been cleaned since late last week?
Or maybe you mean the thrill of shelling out $8.75 for the latest "blockbuster" sratting Pauley Shore?
According to the actual article (sigh) the trail in question is by no means considered to be a meteor trail but more likely an airplane contrail reflecting the setting sunlight.
Come on SlashDot...let's not turn into the National Enquirer in our search for articles OK?
Anyone care for a Reactionless Thruster ?
....destroy all the copies of his very first novel? Is anyone else as curious about this statement as I?
Hopefully Heinlein's heirs aren't going to pull a "Hubbard" on us where dozens of novels never previously published are released posthoumosly.
I can't help but wonder if this couldn't be a glorious fraud by someone trying to live out "The Man Who Sold The Moon". Hmmmmmmmmm.....
> I hope he likes pizza.
.....now if you really wanted to piss him off I suppose one could call the local Akron $cientology/Mormon/7th Day Adventists...etc chapters, feign interest and arrange for a nice Sunday morning get together at his house.
>And porn subscriptions...
Geez...why not send him a couple of hookers and a pack of cigarettes while you're at it? Somehow I don't think guys of his ilk would object to a few pizzas or free pron......
....what can just as easily be attributed to stupidity.
I guess this puts a finish to the "spammers are releasing viri into the wild" theories??
OK so I guess I'm safe with my William Shatner Sings The Blues collection, right?
Already been done and doing VERY well... www.CDBABY.com
I can't help but wonder if a high tech civilization using fission, fusion, antimatter and who knows what.... would generate high levels of nutrino flux and if results from detectors such as these could be used as a device to detect such?
That's because Canada is a civilized country ... Out here in the Bush...it's another matter entitely....
I think that all you'd need is a voltage tripler circuit - no biggie. I would envision a hot-jump "port" on such vehicles that would sense if a 12 volt supply was being used and then up up the voltage to the starter (if needed) accordingly. So you would buy a set of jumper cables that would have standard alligator connectors on one end and the "port" connector on the other for 12 -36 volt situations.
Makes sense really...don't see why we don't have such hot jump ports on autos now instead of connecting from battery to battery directly which is more dangerous then people think. I've seen one battery explode already in someone's face once and I'm sure it happenns not infrequently to people each year.