The Moon
|
|
Thread rating:  |
Alan Erskine - 04 Oct 2004 15:37 GMT im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a firefighter in Doveton vic 3788, give me a time and place to meet. I'll even buy you a beer and then we can look for niggers in and burn then like i did with my mom.
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:35 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
Little Lott , Tn Joe - 04 Oct 2004 21:37 GMT > im alanerskine1@yahoo.com.au aka alanerskine1@bigpond.com and im a > firefighter in Doveton vic 3788, give me a time and place to meet. > I'll even buy you a beer and then we can look for niggers in and > burn then like i did with my mom. PLONK
Little Lott , Tn Joe
YEP YEP
WarrenB - 05 Oct 2004 10:04 GMT WHAT IDIOTS SPEND MONEY ON GOING TO THE MOON!.... OH , AMERICANS OF COURSE!
Scott Hedrick - 05 Oct 2004 16:10 GMT > WHAT IDIOTS SPEND MONEY ON GOING TO THE MOON The Japanese and Europeans, of course.
Isn't the European bird about to arrive after taking a *year* to get there?
Sander Vesik - 07 Oct 2004 09:52 GMT In sci.space.policy Scott Hedrick <dinehnm@yahoo.com> wrote:
> > WHAT IDIOTS SPEND MONEY ON GOING TO THE MOON > > The Japanese and Europeans, of course. > > Isn't the European bird about to arrive after taking a *year* to get there? Umm... Why should it have tried to get there faster? SMART-1 is a nice cheap satellite - wheres the glory in mindlessly dumping money on probes that could just as well be done cheaper?
 Signature Sander
+++ Out of cheese error +++
Scott Hedrick - 07 Oct 2004 14:31 GMT > In sci.space.policy Scott Hedrick <dinehnm@yahoo.com> wrote: > > [quoted text clipped - 5 lines] > > Umm... Why should it have tried to get there faster? I don't have any problem with the Europeans taking their time. Someday, they too will be able to get to the Moon in three days, like the US did over 35 years ago.
wally - 07 Oct 2004 09:56 GMT "Alan Erskine" <alanerskine1@yahoo.com.au> wrote in > We can get people to the Moon in five years,
> not the fifteen GWB proposes. > Give NASA a real challenge yeah, stop world poverity, wars///
Alan Erskine - 07 Oct 2004 12:13 GMT > "Alan Erskine" <alanerskine1@yahoo.com.au> wrote in > We can get people to > the Moon in five years, > > not the fifteen GWB proposes. > > Give NASA a real challenge > > yeah, stop world poverity, wars/// That would require politics, not money.
Now, going to the Moon is quite achievable in five years - NASA did in in eight from scratch (roughly) and today we have the basic components needed, but used in different programs.
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
Simon Templar - 07 Oct 2004 13:14 GMT >>"Alan Erskine" <alanerskine1@yahoo.com.au> wrote in > We can get people to >>the Moon in five years, [quoted text clipped - 9 lines] > eight from scratch (roughly) and today we have the basic components needed, > but used in different programs. STOP CROSS POSTING Erskine, we don't want you and the sh.t you drag in here at aus.services.emergency
73 de Simon, VK3XEM.
Scott Hedrick - 07 Oct 2004 14:32 GMT > STOP CROSS POSTING You first.
Scott Hedrick - 07 Oct 2004 14:32 GMT > yeah, stop world poverity, wars/// Let's see your contribution. Perhaps if you spent less time posting you'd have more time to enlist in the military to help stop war.
william mook - 07 Oct 2004 16:32 GMT > "Alan Erskine" <alanerskine1@yahoo.com.au> wrote in > We can get people to > the Moon in five years, > > not the fifteen GWB proposes. > > Give NASA a real challenge > > yeah, stop world poverity, wars/// 1) Limited strategic resources can cause nations to engage in power struggles over those resources which can lead to war.
http://www.ppu.org.uk/war/future_wars.html
2) The way children are raised in the modern world affords them scant respect. This creates a fascination with wealth, power and death and leads to a propensity to support actions that lead to war in a significant minority of adults raised this way. Spending $8 trillion on nuclear warheads for 'security' and next to nothing on peaceful methods of resolving conflict makes sense to a population of adults raised this way. Violent crime is also a byproduct of this process.
http://www.noogenesis.com/malama/abuse/miller.html
3) Voting and markets are incapable of doing what people routinely expect of them. No method of counting can be used to accurately measure the will of a population of individuals. Turning to market forces mediated through open markets or the will of the people through free and fair voting has been shown to be as effective as submitting to the devine rights of kings. In short, ineffective despite common belief that such practices are effective. Succintly, humanity has not yet hit on a way to organize its affairs rationally. Knowledge of this shortcoming has been uniformly ignored or misstated to minimize the result and basically perpetuate the myth that markets and voting work. Meanwhile, special interests poll populations to drive market and voting decisions into the hands of those special interests by controlling the order of decision making.
http://www2.sjsu.edu/faculty/watkins/arrow.htm
SOLUTIONS
Unconstrained by corruption, inefficiencies, environmental effects and supply limits industrial economies can grow at double digit rates. Since population growth grows in the low single digits clearly its feasible for a growing industrial economy unconstrained by limits can provide high living standards world wide. High living standards translates to low levels of conflict and low population growth rates - effectively solving the problem of warfare and poverty - except in cases where poverty is the result of psychological disturbances an inability to cope socially (which is another class of poverty entirely)
The central problem facing human industry at the moment are supply limits.
http://www.wws.princeton.edu/cgi-bin/byteserv.prl/~ota/disk2/1985/8525/852504.PDF
In addition to fuel resources the world's industrial economy relies on a short list of strategic materials that are in short supply. Limited fuel supply when combined with limited strategic materials supply constrain the ultimate growth of our industrial economy leading to pockets of high wealth surrounded by a sea of poverty. As stated at the outset, this is the situation that is most likely to lead to future warfare.
While the supplies of Earth are limited, the supplies available across the solar system are not. The sun provides 171,500 trillion watts of power to Earth. Humanity uses energy at a rate of 5.5 trillion watts - primarily by burning 28 billion barrels of oil each year. Unconstrained by limited oil supplies (there are 900 billion barrels of easily recoverable oil available in the world) this could easily grow to 60 trillion watts of energy usage. To collect this spaceborne power terrestrially requires the construction of 20 trillion watts of collectors growing to 210 trillion watts of collectors. These would cover an area of 20,000 sq miles and grow to 210,000 sq miles. A space based system would be about 1/3 this size since it would be exposed to sunlight nearly continuously. If the cost of the energy storage and processing system for this larger infrastructure is less than the cost of rockets to place the smaller area of collectors into space - and beaming of power could be worked out - we could provide energy from space satellites creating a global powernet akin to today's global internet.
This would be a first step in ending poverty and with it potential for conflict and warfare.
The other strategic materials could be obtained from asteroids. Since the 1950s we have known how to move asteroids through the solar system using atomic explosives.
http://encyclopedia.thefreedictionary.com/asteroid%20deflection
While people have focused primarily on deflecting errant asteroids away from collision with Earth, it is perfectly feasible to bring asteroids into orbit around Earth. So, we can use nuclear pulse rockets to go out and survey the 30,000 asteroids - and pick the richest. We can then bring these asteroids back to Earth orbit. There, we can use sunlight and remotely controlled robots
http://asimo.honda.com/index.asp?bhcp=1
to harvest critical materials in sufficient abundance to provide for all our material needs - even if our population should exceed 10 billion people! Further, we can expand upon this concept to place all major industry in Earth orbit, including farms and forests - to provide all the world's food and fiber while simultaneously letting the world go back to nature. People would then be capable of living at very high standards in a vast global nature preserve - sustained by resources and processes located in Earth orbit.
william mook - 09 Oct 2004 14:31 GMT Didn't address Arrow's Paradox.
Arrow's paradox stems from the nature of transitivity - as the pointer in the previous post shows. Numbers are transitive. Human values are not. So, when we try to measure human values with numbers - something is lost. Clever people can manipulate which information is lost to determine outcomes against the will of people - even though the people who are deciding against themselves make the decisions.
This is true whether you're voting in an election, or making decisions in the closing room of your local car dealership. The decision making process is organized to give those running the show the benefit of your choices.
People intuitively feel this during elections which is why most refuse to participate.
So, my solution to Arrow's Paradox is straightforward - as are all my solutions. Basically numbers are more complicated than people generally realize. Numbers occur in different varieties. There are scalars - the numbers everyone thinks about when you talk about numbers. There are vectors - these are ordered lists of scalars. These are important in structuring information - and can be used to draw pictures for example since ordered lists of numbers can be represented by a directed line segment. The interesting thing about vectors, is that they are in certain ways non-transitive. You can reduce them to transitive values by doing things to them. Like figuring out their length or their orientation and measuring them. But vectors of themselves are non-transitive too. Then, there are tensors -ordered tables of scalars (or ordered lists of vectors.) Since Arrow's Paradox is generally introduced by examining a table of values - we should keep this idea in mind. Tensors are non-transitive too!
Now, there is a new field of study called emergent systems
http://www.it.swin.edu.au/centres/ciamas/tiki-index.php?page=Introduction
Might is be possible to create an emergent system involving vectors or tensors that allow for rational collective choices to be made?
I think so.
my idea is two-fold;
(1) Create personal electronic wealth symbols that are used to transact business. Individuals create their own money when they buy something and redeem their own money when someone buys something from them. This is the way nations work. Each person's spending and redeeming habits are encoded in a table, very similar to the way a credit report is used today.
(2) The electronic wealth symbols are vectors that encode a wide variety of information useful to the people who use it. Wassily Leontieff created the input-output method of econometric analysis. An economy can be represented by a table of numbers. Each table can be broken down into rows and columns. The columns represent all the needs of each consuming activity in the economy. The rows represent all the benefits of each productive activity in the economy. Individual transactions can be encoded in this way as well. In any event, the wealth symbols each person creates have a certain structure that reflects that person's values and desires.
SYNTHESIS So, the electronic currency is used to transact business and encode in each transaction the reason for the transaction and the value of the transaction to both parties - recording at least as well as a written contract enforced by a court and attorneys.
The value of the currency automatically adjusts as it flows through the electronic exchanges.
The structure each person gives to their currency reflects their personal values. Collectively these structures combine to provide for the emergence of cultural and social features rationally desired by the population.
For example, if someone wanted to support cancer research with each transaction - invoking it like a tax each time their currency was used - this would reduce the value of the currency to others, but cause money to flow to cancer research. If sufficient numbers of people chose to support this activity - large quantities of money would flow. Those qualified to receive it and under what terms, could be encoded in the transaction matrix as well.
So, the issue in this new economy wouldn't be to find someone to work for to get money. People would be able to create money on demand. The issue would be to find something useful to do to allow you to redeem the money you want to spend! This at the outset is pretty damned impressive change of focus.
Basically, nearly all the activities we use voting and money for can be subsumed by this new system with little or no change and would finally provide humanity with a means to make rational collective choice.
Johnboy - 07 Oct 2004 22:14 GMT > We can get people to > the Moon in five years, But why?
dave - 07 Oct 2004 22:29 GMT > > We can get people to > >>the Moon in five years, > > But why? I,m not sure that thats not the saddest thing I have ever heard anyone say.
bob haller - 08 Oct 2004 01:09 GMT >I,m not sure that thats not the saddest thing I have ever heard anyone say. its factual. most folks could care less:( . . End the dangerous wasteful shuttle now before it kills any more astronauts....
william mook - 08 Oct 2004 17:09 GMT > > > We can get people to > [quoted text clipped - 3 lines] > > > I,m not sure that thats not the saddest thing I have ever heard anyone say. I'm sure its the dumbest! Our capacity to operate in space allows us to tap into to extraterrestrial resources. This comes precisely at the time our growing needs are beginning to outstrip terrestrial resources. Clearly delaying or diminishing our capacity in this area will cost future generations dearly. Plainly we should move agressively to develop the skills needed to tap abundand extraterrestrial resources as quickly as possible and bring about those changes that are needed to transform life on Earth to one of plenty for all.
warrenb - 10 Oct 2004 00:54 GMT "oooohh look .... a moon rock, we cant live here, but ooohhh how many $billions did it cost to get me here, who cares, Uncle Sam is happy to pay."
w.nk w.nk
It makes more sense/cheaper to live on the bottom of the ocean, or build a biosphere in the desert
>> > > We can get people to >> [quoted text clipped - 14 lines] > those changes that are needed to transform life on Earth to one of > plenty for all. Alan Erskine - 10 Oct 2004 02:13 GMT > It makes more sense/cheaper to live on the bottom of the ocean, or build a > biosphere in the desert Why does it make more sense? Why is it cheaper?
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
Volker Hetzer - 11 Oct 2004 18:07 GMT > > It makes more sense/cheaper to live on the bottom of the ocean, or build a > > biosphere in the desert > > Why does it make more sense? Because the risks are lower. It's easier to evacuate a station on hteocean floor than the moon. Ditto for the desert station. As for the rewards, where are they?
> Why is it cheaper? Because you don't have to develop much new technology and because it costs less to transport people or materiel there and back.
Greetings! Volker
Scott Hedrick - 10 Oct 2004 04:05 GMT > It makes more sense/cheaper to live on the bottom of the ocean, or build a > biosphere in the desert OK, let's see your numbers. Have you done the math to support this claim, or are you talking out of your Haller?
william mook - 11 Oct 2004 06:58 GMT > > It makes more sense/cheaper to live on the bottom of the ocean, or build a > > biosphere in the desert > > OK, let's see your numbers. Have you done the math to support this claim, or > are you talking out of your Haller? Well, for space travel, what you're paying for is momentum. So we're talking cost of momentum. As the cost of momentum drops we can project more for a given amount of money. This means we can do more for a given amount of money. I propose that space based resources will displace Earth based resources because space based assets will deliver more stuff at lower price than terrestrial competitors.
Here's a typical launcher;
http://www.astronautix.com/lvs/pro8k82k.htm
A reasonably priced rocket these days is the Russian Proton rocket. It costs $50 million and puts up about 19,760 kg into a 186 km orbit. Speed of the payload is about 7.6 km/sec. Momentum then is mass times speed so;
7,600 x 19,760 = 150,176,000 kg m/sec
and the cost is $50 million, so the cost per momentum today for rockets is 3 kg m/sec per dollar. Or $0.33 per kg m/sec.
With this capability we can put up small satellites that can process information and provide a global information network.
http://www.astronautix.com/craft/echo.htm
In the 1950s and 60s the US orbited a pressurized mylar balloon that was 30 m in diameter and massed 66kg. Since mass scales with area of balloons, and the gas mass was not the largest component, we can say that a 19,760 kg balloon would be 519 m in diameter. Built as an inflatable concentrator this system would generate 115 MW of laser or maser energy. At $50 million this is $0.50 per watt. Nearly economic.
A fully reusable unpiloted vehicle might drop costs another factor of ten, depending on launch rate.
Such a system would deliver solar pumped lasers to orbit at a cost of $0.05 per watt. Definitely economic.
Once we have lasers of sufficient size and at appropriate costs, we can imagine laser sustained detonation rockets with the laser beams powered conventionally which might drop costs a factor of 100. Laser rockets with laser beams powered by sunlight captured on the ground might drop costs a factor of 1,000 - and space based capture of sunlight to power laser beams might drop laser rocket costs by a factor of 10,000. Nuclear pulse rockets have already been shown to be capable of cost reductions by a factor of 10,000 or more from chemical rockets. So;
Expendable Launch Vehicles - $330.00 per kg km/sec Reusable Launch Vehicles - $33.00 per kg km/sec First Generation Laser - $3.30 per kg km/sec Second Generation Laser - $0.33 per kg km/sec Third Generation Laser - $0.03 per kg km/sec Nuclear Pulse Rocket - $0.003 per kg km/sec
As the costs for momentum drop the rockets get bigger and faster and we have the following benefits;
ICBM - End of global warfare - 1950 Satellite - Global Communication - 1960 Power Satellite - Global Energy - 1970*Proposed Asteroid Capture - Global Manufacturing - 1968*Proposed Suborbital ballistic delivery - Low cost orbital travel - Space Homes -
Alan Erskine - 11 Oct 2004 07:41 GMT William, what do aus.services.emergency and aus.bicycle have to do with this? There's already been one dickhe.... idiot whinging on these two groups about cross-posting and I'm the one who cops it.
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
william mook - 11 Oct 2004 14:07 GMT > William, what do aus.services.emergency and aus.bicycle have to do with > this? There's already been one dickhe.... idiot whinging on these two > groups about cross-posting and I'm the one who cops it. Why are you bitching at me? I'm posting within my group. If someone earlier in the thread cross-posted the hell out of it, you should be talking with them. It isn't me!
If no one cross-posted prior to my post - it still isn't me, because I don't pay a bit of attention to where things are cross posting. I would have to look up how to do a cross-post since I've never done it.
So, if no one cross-posted prior to my post - then look in your software, or someone somewhere else who is f**king with me and the system in a vain effort to bring negative attention my way.
Anything I can do to help, you let me know.
But it isn't me doing this cross-posting.
Thanks.
Alan Erskine - 11 Oct 2004 14:18 GMT > > William, what do aus.services.emergency and aus.bicycle have to do with > > this? There's already been one dickhe.... idiot whinging on these two [quoted text clipped - 11 lines] > software, or someone somewhere else who is f**king with me and the > system in a vain effort to bring negative attention my way. I tried to explain it that it was _me_ copping it, but if you want to take it that way, ok by me. Just for the record, I wasn't "bitching" at you; you were posting within _lots_ of groups, including the two I removed. Even google lets you remove groups.
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
william mook - 11 Oct 2004 14:11 GMT > William, what do aus.services.emergency and aus.bicycle have to do with > this? There's already been one dickhe.... idiot whinging on these two > groups about cross-posting and I'm the one who cops it. Alan I can bring this to your attention;
YOU CROSS-POSTED TO THOSE GROUPS YOU'RE COMPLAINING ABOUT - ACCORDING TO THE HISTORY I'M GETTING FROM MY SOFTWARE - DO YOU CONCUR? HERE IS WHAT I GET:
From: Alan Erskine (alanerskine1@bigpond.com) Subject: Re: The Moon View this article only Newsgroups: aus.services.emergency, sci.space.history, sci.space.policy, sci.space.shuttle, aus.bicycle Date: 2004-10-09 18:14:05 PST
> It makes more sense/cheaper to live on the bottom of the ocean, or build a > biosphere in the desert Why does it make more sense? Why is it cheaper?
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
******************************************
Alan Erskine - 11 Oct 2004 14:19 GMT > > William, what do aus.services.emergency and aus.bicycle have to do with > > this? There's already been one dickhe.... idiot whinging on these two [quoted text clipped - 5 lines] > TO THE HISTORY I'M GETTING FROM MY SOFTWARE - DO YOU CONCUR? HERE IS > WHAT I GET: What a dickhead. Bye bye. <plonk>
 Signature Alan Erskine We can get people to the Moon in five years, not the fifteen GWB proposes. Give NASA a real challenge Alanterskine1@bigpond.com
william mook - 11 Oct 2004 22:41 GMT dave <daveidt@jeack.com.au> wrote in message news:<2slq7uF1l7gb4U1@uni-berlin.de>...
> Johnboy wrote: > > > We can get people to [quoted text clipped - 3 lines] > > > I,m not sure that thats not the saddest thing I have ever heard anyone say. I'm sure its the dumbest! Our capacity to operate in space allows us to tap into to extraterrestrial resources. This comes precisely at the time our growing needs are beginning to outstrip terrestrial resources. Clearly delaying or diminishing our capacity in this area will cost future generations dearly. Plainly we should move agressively to develop the skills needed to tap abundand extraterrestrial resources as quickly as possible and bring about those changes that are needed to transform life on Earth to one of plenty for all.
william mook - 11 Oct 2004 22:54 GMT > > "Alan Erskine" <alanerskine1@bigpond.com> wrote in message > news:<pWpad.21811$5O5.13494@news-server.bigpond.net.au>... [quoted text clipped - 10 lines] > > What a dickhead. Bye bye. <plonk> WILL THE REAL ALAN ERSKINE PLEASE STAND UP!
Alan Erskine appears to be the unfortunate target of trolls. Check it out;
alanerskine1@bigpond.com alanerskine@optusnet.com.au alanerskine1@yahoo.com.au
And from someone who claims to be Alan Erskine himself;
Look closer. I post via bigpond (alanerskine1@bigpond.com). I am being trolled and the trolling is being attributed to me. The post you refer to was probably from alanerskine1@yahoo.com.au or alanerskine1@yahoo.co.nz - free accounts.
Interesting.
Porn Shop Stiffy - 11 Oct 2004 23:04 GMT > > > It makes more sense/cheaper to live on the bottom of the ocean, or build a > > > biosphere in the desert [quoted text clipped - 69 lines] > Low cost orbital travel - > Space Homes - william mook - 12 Oct 2004 10:06 GMT Just re-posting and removing unwanted cross-posts to highly active newsgroups who are very effective at complaining to Google! Don't know why this person who is obviously not the person s/he claims to be, reposted to them - except they're trying to make a scene. I'd like to track them down and do something bad to them.
The choice of cross-posted newsgroups is interesting too. Who would have known that aus.emergency.services would get the Google upper management into such a tizzy? Whoever they are, f**k them!
Free and fair and open discussion is a great benefit to society and shouldn't be f**ked with imho.
> > "Scott Hedrick" <dinehnm@yahoo.com> wrote in message > news:<0D1ad.66918$DV3.28036@bignews5.bellsouth.net>... [quoted text clipped - 73 lines] > > Low cost orbital travel - > > Space Homes - dave - 10 Oct 2004 23:24 GMT > "oooohh look .... a moon rock, we cant live here, but ooohhh how many > $billions did it cost to get me here, who cares, Uncle Sam is happy to pay." [quoted text clipped - 22 lines] >>those changes that are needed to transform life on Earth to one of >>plenty for all. Oh its the dumbest allright. That goes without saying. Even were going to the moon pure research.. pure research ALWAYS pays off except to the shortest sighted of beancounters. And as you point out it aint pure research, its practical engineering.
But I was thinking of the lack of vision in this guy. Not going to try and explain poetry or exploration or art or anything to him. The human spirit is a bit out of his reach. Dave
Mike Combs - 11 Oct 2004 19:04 GMT > It makes more sense/cheaper to live on the bottom of the ocean, or build a > biosphere in the desert This proceeds from an incorrect assumption: that the problem is we're getting too crowded and we need to develop another place not currently filled with humans in order to hold the spillover. That's not the reason why we want to develop space. We want to develop space because we want to have a destiny that lies beyond this one tiny little corner of the universe.
 Signature Regards, Mike Combs ---------------------------------------------------------------------- Member of the National Non-sequitur Society. We may not make much sense, but we do like pizza.
william mook - 12 Oct 2004 10:37 GMT > > It makes more sense/cheaper to live on the bottom of the ocean, or build a > > biosphere in the desert > > This proceeds from an incorrect assumption: that the problem is we're > getting too crowded and we need to develop another place not currently > filled with humans in order to hold the spillover. That's not true at all. The practical reason is that we are running short of critical mateirals - as pointed out in the URLs I provided earlier. We don't have enough energy on Earth we don't have enough strategic materials on Earth to meet the needs of an industrial humanity. THe solar system has these in abundance. We can collect solar energy and use it to make synthetic oil or oil replacements if done cheaply enough. We can capture rich asteroids and bring them back to Earth to provide critical raw materials. This is the practical reason to support space travel in the present age.
> That's not the reason > why we want to develop space. We want to develop space because we want to > have a destiny that lies beyond this one tiny little corner of the universe. That's not practical enough. While it is true humanity has always developed its frontiers when the resources of the center have failed - while it is true that Earth is the center and the solar system the frontier in the present age - we still need a practical focus for our activities. And here it is. We obtain solar energy efficiently from the sun while in space. We obtain critical materials from asteroids moved to Earth orbit with space faring technologies like nuclear pulse rockets.
There is also a spiritual dividend to space exploration. Fully 1/3 of all lunar astronauts had a life-changing spiritual experience from their trip. The environmental movement can be shown to be a result of Apollo 8s picture of Earth taken from the moon - floating alone and vulnerable in space, without international borders.
This suggests that for astronauts who travel far from Earth (not the high-altitude flight of the Shuttle or SS1) a significant portion of them will gain deep insights that will illuminate future spiritual and political experience.
This sort of experience and growth is uniformly feard by police states - but this sort of thing is essential to the continued Ascent of Man! (Okay I admit, I've recently watched Jacob Bronowski again on the Science Channel! :) )
Volker Hetzer - 11 Oct 2004 18:11 GMT > > > > We can get people to > > [quoted text clipped - 13 lines] > those changes that are needed to transform life on Earth to one of > plenty for all. This is a troll, right? What extraterrestrial ressources? There's no oil out there, you know? As for solar energy, you don't need to go to the moon for that.
Greetings! Volker
Mike Combs - 11 Oct 2004 19:09 GMT > What extraterrestrial ressources? There's no oil out there, you know? Some of us are proposing that we move beyond oil.
> As for solar energy, you don't need to go to the moon for that. True, but you do need to get outside the shadow of the Earth to harness solar energy 24 hours a day. And if building continuous solar energy collectors beyond the Earth's shadow, the moon might be a more economical source of raw materials than the Earth.
 Signature Regards, Mike Combs ---------------------------------------------------------------------- Member of the National Non-sequitur Society. We may not make much sense, but we do like pizza.
william mook - 12 Oct 2004 10:21 GMT Watch the cross-posts guys - trolls abound everywhere! :)
> > What extraterrestrial ressources? There's no oil out there, you know? > > Some of us are proposing that we move beyond oil. We have a process that makes DC electricity from sunlight at $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way to make hydrogen from water through what we call a wet cell electrolyzer (stainless steel, water and potassium hydroxide) at 50 kWh per kg of hydrogen. That's a 6.25 cents per kg. That's $62.50 per metric ton of hydrogen from 9 metric tons of water. (Water costs $0.30 per metric ton even in water poor regions of the US)
A metric ton of hydrogen can be combined with 5.5 metric tons of CO2 to make 2 metric tons of methane (and 4.5 metric tons of water again)
We're proposing this for the island of Sumatra in Indonesia to convert the tremendous amounts of CO2 to methane essentially tripling the reserves of the Natura fields operated by Esso.
To meet their needs for solar energy to power this process we'll have to install 6,400 sq km of collectors. This will be done on part of the 15,000 sq km of burnt out rainforest left over from the fires in Sumatra of 1997.
And will change the way people think of solar power.
The economics are great. We get paid $2 per metric ton for the CO2 we absorb. We get paid $150 per metric ton of methane we produce. So, we're getting $309 for every metric ton of hydrogen we make for $64. That's a $245 per metric ton profit. A huge ROI.
> > As for solar energy, you don't need to go to the moon for that. By going to the moon we establish the technical means to go anywhere else.
> True, but you do need to get outside the shadow of the Earth to harness > solar energy 24 hours a day. And if building continuous solar energy > collectors beyond the Earth's shadow, the moon might be a more economical > source of raw materials than the Earth. The moon is not rich in the materials that are in short supply on Earth. We need nuclear pulse rockets to capture asteroids that are rich in these materials.
The moon is an important site however. That's because we can use the moon as a nuclear research and production center to produce nuclear impulse units to drive nuclear pulse spacecraft without harming Earth's biosphere - and its an ideal place to put military assets that provide for global security, maintaining peace on Earth in the post-Soviet age.
Jim Davis - 12 Oct 2004 14:07 GMT > We have a process that makes DC electricity from sunlight at > $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way [quoted text clipped - 4 lines] > water. (Water costs $0.30 per metric ton even in water poor > regions of the US) When can we expect to see your smiling face on the cover of Forbes with the caption "Move over Bill Gates - the NEW world's richest man!!"? :-)
Jim Davis
Peter Stickney - 12 Oct 2004 14:28 GMT >> We have a process that makes DC electricity from sunlight at >> $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way [quoted text clipped - 8 lines] > with the caption "Move over Bill Gates - the NEW world's richest > man!!"? :-) When the Laws of Thermodynamics are repealed.
 Signature Pete Stickney A strong conviction that something must be done is the parent of many bad measures. -- Daniel Webster
william mook - 12 Oct 2004 22:52 GMT > >> We have a process that makes DC electricity from sunlight at > >> $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way [quoted text clipped - 8 lines] > > with the caption "Move over Bill Gates - the NEW world's richest > > man!!"? :-) This is my vision! :)
> When the Laws of Thermodynamics are repealed. Nonsense.
First run silicon costs about $0.17 per sq cm. One sun illumination possesses 0.085 watts per sq cm at ground level. Silicon solar cells are no more than 20% efficient. So, each sq cm produces 0.017 watts electrical per square cm. That's $10 per watt.
Now, solar cell manufacturers typically use surplus second run silicon that's much cheaper to acquire - so they can produce a finished solar panel for about half this figure, but are limited by the availability of low-cost silicon. There is a diseconomy of scale. And that's where the solar industry finds itself today.
http://www.jxj.com/magsandj/rew/2002_06/silicon_supply.html
To reduce the cost of silicon to say $0.02 per watt requires concentrating the sun 500x normal solar intensity. This has been achieved by a variety of researchers using multi-junction photocells or low resistance photocells or some combination of both.
http://www.californiasolarcenter.org/solareclips/2003.07/20030708-1.html http://www.cnn.com/2003/TECH/biztech/04/14/better.photovoltaics.ap/
These systems do not violate the laws of physics. 500x solar intensity is 42.5 watts per square cm. Cooling systems are capable of easily sinking 50 to 500 watts per sq cm.
http://www.coolingzone.com/Guest/News/NL_March_2001/Thermacore/Mar_TC_2001.html
So, plainly heating for the right kind of PV in the right environment is not a problem while achieving silicon costs of less than $0.02 per watt!
The rest of the puzzle is achieving very low costs in the concentrating optics, the cooling sytem, installation and maintenance, and the tracking system so that the entire system is $0.04 per peak watt.
We have done this - and this is the basis of our success.
$0.04 per peak watt translates to 3/10th of a cent per year in annual costs - depending on what discount rate and what lifespan you enter for the PV system.
Each peak watt in a place that has say 2,400 hours of sunlight produces 2.4 kWh of energy per year.
So, since there are no fuel costs the cost of this power is 1/8th cent per kWh!
This is far lower than the cost of fuels in most power plants. This means that we can make fuels synthetically at less cost than it takes to extract them from the ground.
As for the size of the market.
Humanity uses 5.5 trillion watts of power in the form of 28 billion barrels of oil per year. To replace this with terrestrial solar power requires the production of 22 trillion watts of solar panels. At 20% efficiency this requires 129,500 sq kilometers of land be paneled. At 4 cents per watt this amounts to an investment of $880 billion. Allowing for double this figure to account for energy transmission, and attached solar powered hardware to produce synthetic liquid and gaseous hydrocarbon fuels from carbon-dioxide extracted from the air, results in $1,760 billion. For this we obtain enough fuel to provide essentially all the hydrocarbon fuels of the world today.
http://www.eia.doe.gov/emeu/aer/pdf/pages/sec11_21.pdf
Petroleum 28 billion barrels @$30/bbl = $840 billion
Which is a 47% rate of return, and easily funded to any level given the the basic process is well proven.
An interesting sidebar is the impact of the cost of oil on demand for oil.
http://www.mb.com.ph/MAIN2004093019533.html
Lower oil prices and increased supplies translate to rapid economic growth in less developed regions. This means huge increases in economic output as well as increases in demand for oil. Particularly as automobile use spreads worldwide.
http://www.eurochinabusiness.com/industial/const.htm
What this means in an environment of unlimited energy availability (the Earth intercepts solar energy at a rate of 171,500 trillion watts!) is very rapid growth to about 11x the present economic output of the world (from $40 trillion to $440 trillion in 36 years assuming 7% real growth) and along with it growth in energy markets from $840 billion to $9,240 billion by 2040.
With 40% margins maintained throughout this period this means a company with $9 trillion today growing to nearly $100 trillion by 2040. This is 10 to 100x larger than the wealth created by Bill Gates' innovations! And given the great impetus these innovations give to the global economy and general raising of the human condition, this money is well earned!
Pete Lynn - 13 Oct 2004 00:03 GMT > >> We have a process that makes DC electricity from sunlight at > >> $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way [quoted text clipped - 10 lines] > > When the Laws of Thermodynamics are repealed. Not surprisingly it is a concentrator approach. My BOTE calculations inferred that his approach was probably good for 1-2 cents per kWhr and probably more. Though beyond this would require more specific analysis on my part.
Even at 1-2 cents per kWhr it is still a winner, though numerous concentrator approaches should potentially be capable of this, his is probably the best of them. Direct hydrogen production via the thermodynamic water splitting Sulphur Iodine process is one of the latest interesting ones.
This is something that I think SPS advocates tend to underestimate. The ongoing advancement and cost reduction of terrestrial renewable energy sources. Traditionally such R&D was driven by the environmentally conscious, it is becoming driven by the economically conscious, expect big advances when this happens. Money is a far more honest and more effective driver of technological development.
Pete.
william mook - 13 Oct 2004 12:38 GMT > > >> We have a process that makes DC electricity from sunlight at > > >> $0.00125 per kWh (1/8th cent per kWh) We have a low-cost way [quoted text clipped - 12 lines] > > Not surprisingly it is a concentrator approach. Yep.
> My BOTE calculations > inferred that his approach was probably good for 1-2 cents per kWhr and > probably more. Could you share your approach? You're starting with junction temperature right?
> Though beyond this would require more specific analysis > on my part. And proprietary information.
> Even at 1-2 cents per kWhr it is still a winner, though numerous > concentrator approaches should potentially be capable of this, his is > probably the best of them. Direct hydrogen production via the > thermodynamic water splitting Sulphur Iodine process is one of the > latest interesting ones. Yep.
> This is something that I think SPS advocates tend to underestimate. The > ongoing advancement and cost reduction of terrestrial renewable energy > sources. Don't underestimate the development of private space programs ability to dramatically lower costs of space access!
In the Cold War the State Department had to worry about the negative impact on missile proliferation a low-cost developer of commercial space travel might have. In the new age of direct US pre-emptive intervention in the affairs of any nation that might threaten US interest, and improved recon abilities due in part to space based systems, this is no longer an issue.
So, Burt Rutan and all after him will build an X15 analogs and better and exceed the performance of those systems for something like 1% of the program cost and 0.1% of the losses in human life!
> Traditionally such R&D was driven by the environmentally > conscious, it is becoming driven by the economically conscious, expect > big advances when this happens. Money is a far more honest and more > effective driver of technological development. Yep. Which is why for-profit operations like Scaled Composites and not cost-plus like all government programs is a great benefit to the space faring community.
The government programs could be a pathfinder for private enterprise, if the government would declassify stuff presently classified and put NASA in the role of supporting private space development, like NACA supported private air travel. Back in the day NACA even evaluated the military potential of aviation advances produced by industry. This could be a role within the Air Force, or even NASA as well in the modern age of commercial space development.
In the end, low-cost solar will not stop when it reaches the price of fossil fuels. Although during the era when fossil fuels are still dominant, costs will hesitate there. This will create a brief period of a decade or less of great profits in low-cost solar. (a period when my patents are in place!)
But, eventually, low-cost solar will create low-cost energy generally. When that happens, we will have a return of the 'too cheap to meter' scenarios of the nuclear industry of the 1950s.
Low cost energy along with an effective international police force (what the US is tending toward, they just haven't figured out how to pay for it) will create a period of dramatic economic growth that could transform the world in a few decades. This isn't just a political rant. The spread of nuclear technology and the outbreak of even limited nuclear conflict is a very very bad thing that will throw any rosy scenario into a cocked hat. So, its in everyone's interest to make sure that doesn't happen. Even if they don't believe it or support it. I think future generations will look on George Bush as we now look on George Washington (I didn't vote for him, so I can say this without bias) and today's war on terror will be viewed by future generations the way Americans view the Whiskey Rebellion.
And it could go faster than even that!
Add in the economic impact of the appearance of real honest-to-god robots in a large variety of roles as computer technology continues to advance, and you have a recipe for economic growth on a scale unprecedented in history! (just as computers eliminate the need for much of middle management and improve the skills of even tiny companies - robots eliminate the need for skilled workers and allow any population anywhere to benefit from the skills and knowledge available anywhere in the human corpus of knowledge - essentially eliminating the need for training altogether, just pay for the robot - banks leverage a portion of the robot's earning potential - and users put it to work - the banks keep everyone honest)
If robots arise over the next five to eight years, we will see general global growth skyrocket from 4% to 7% range to the MID double digit range (30% to 70%) - which will transform the world in less than a decade, and expand PER CAPITA energy use to levels that are unprecedented in history.
This is the real rosy scenario. Every scenario that doesn't postulate strong economic growth is a recipe for the eventual abandonment of industry by humanity.
Why will per capita energy uses be so high? Well, they grow rapidly as a population begins to change the way they travel. From walking and biking to autos for example. They grow rapidly again as personal jets or their modern analogs become generally available. I flew with a millionaire a few days ago from NYC. His fuel bill for that one trip was something like $20,000. Future personal jet users might not be so wasteful (I was thinking of personal trains that personal trains used by the wealthy of the 19th century were very similar to this jet interior - but today's autos are smaller and more efficient though achieving the same ends as the personal train)
Again when personal spacecraft become generally available energy use rises. Then, continuously as speeds increase toward light speed.
But, lets keep it in the 21st century shall we?
We'll see everyone get autos, and before that's completed, everyone will get VTOL flyers. Bad news for the road builders. Good news for the environment.
Automated piloting will mean that these flyers will come in all sizes, down to package carriers. People in the future will think no more of putting an object in a package sized automated ballistic transport and tossing it out the window with an absolute certainty that it will arrive reliably to where its going in minutes - just as we think nothing of dialing a few digits and reaching anyone anywhere by telephone in the world.
What this means is that energy use could be not only 10x today's use in 30 years- which means everyone lives at US levels or better. But that energy use could be 100x to 300x today's use in less than 20 years.
In this high growth scenario (mook's rosy scenario) everyone lives far far better than even millionaires do today and the wealthy live even better still - and they all will regard our present age as we might regard the one room school houses and buckboards of the 19th century.
In this high-growth scenario space travel costs have dropped dramatically, and energy needs have risen dramatically.
The point of all this goes back to what you're saying. This fundamental shift in energy use drives collectors off-world in search of higher efficiencies and lower costs.
Our models indicate that there is one invariant and that is, when you install about 500,000 sq km of solar collectors on Earth, there are very powerful reasons to begin installing far larger areas in space and beam energy to where its needed.
But we're setting the stage today. With lower cost technology brought about by private investment, a commitment to peace and liberty throughout the world to insure peace in the nuclear age, and the ability of people to work hard to improve themselves and the prospects of their children by innovating new ways of doing things.
Bill
> Pete. Pete Lynn - 14 Oct 2004 00:39 GMT > > Not surprisingly it is a concentrator approach. > [quoted text clipped - 5 lines] > Could you share your approach? You're starting with junction > temperature right? Not exactly, my background is more in heat engines, so I sort of took a thermodynamic approach. From this perspective the crux of the problem is the heat source or concentrator, if you can make this for less than the cost of fossil fuels then you know the economics can be made to add up, (pretty much). They added up. From there I sort of looked at a cost comparison between a heat engine plus generator system, (as per a thermal power station), and the concentrated water cooled solar cell approach, the latter looked much cheaper.
On a side note another prospect I have been playing with of late is basically the idea of a trench a few meters across covered with a transparent reinforced plastic sheet. Conceivably this could be made for a few dollars per square meter. Originally I was thinking about this as a low cost closed cycle greenhouse which requires negligible irrigation water, ideal for desserts, perhaps also with elevated CO2 levels. This would be a useful commercial precursor to farming in space. Anyway, it could also serve as a protective cover for solar power collectors, protecting them from wind, rain, dust, etc., enabling a far lighter and cheaper design. I doubt it would add up, but it is just a thought.
I agree with most of the rest of what you said. I see a high rate of continued economic growth, lead by technological development, as fairly essential for the well being of all. Though I do not expect people to educate or work themselves any less. Economic growth will make space much easier.
An interesting prospect with the tethered wing thing is to attach it to a hybrid vehicle. This basically turns it into an electric and relatively quiet VTOL aircraft, at little extra cost, (though it would be nice to soup it up a bit). Fuel consumption would be little different, perhaps even less. As you can imagine this might have quite significant economic and social benefits. You could probably commute five times as far for the same cost and time, disseminating cities. It could also generate tens of kilowatts of power as a wind generator when not otherwise in use.
Pete.
william mook - 14 Oct 2004 15:43 GMT > > > Not surprisingly it is a concentrator approach. > > [quoted text clipped - 8 lines] > Not exactly, my background is more in heat engines, so I sort of took a > thermodynamic approach. That's a good place to start.
> From this perspective the crux of the problem > is the heat source or concentrator, if you can make this for less than > the cost of fossil fuels then you know the economics can be made to add > up, (pretty much). They added up. Yes. The cost of optics is crucial.
> From there I sort of looked at a > cost comparison between a heat engine plus generator system, (as per a > thermal power station), and the concentrated water cooled solar cell > approach, the latter looked much cheaper. Water cooled heat exchanger system (we used a transmission radiator available from an auto supply store for our first one - 12VDC operation!) is much cheaper than a heat engine/generator. Quite right.
> On a side note another prospect I have been playing with of late is > basically the idea of a trench a few meters across covered with a > transparent reinforced plastic sheet. Some folks are working on something like this;
http://www.geocities.com/ralfsun/ http://www.mdatechnology.net/techsearch.asp?articleid=226
The killer here is maintaining accurate fresnel fabrication and low cost framing installation and so forth.
> Conceivably this could be made > for a few dollars per square meter. Depends on how you maintain accuracy of the fresnel cross-section. But, I agree with the right kind of innovation and effort - and sufficiently large production volumes, material costs would dominate and the lenses could be made for a few dollars a square meter.
> Originally I was thinking about > this as a low cost closed cycle greenhouse which requires negligible > irrigation water, ideal for desserts, perhaps also with elevated CO2 > levels. This would be a useful commercial precursor to farming in > space. Israel has experimented with closed systems (not as closed as you are proposing) for years and gotten astounding increases in output as have others.
http://www.attra.org/attra-pub/gh-herbhold.html http://www.citrusandvegetable.com/home/2003_AprilGreenhouse_Peppers1.html http://www.israel-embassy.org.uk/web/pages/copegrow.htm Anyway, it could also serve as a protective cover for solar
A solar powered water cycling system combined with a vapor tight greenhouse - built at sufficient low cost, can dramatically increase output while decreasing the cost of each unit of output. This has huge implications for world hunger - essentially providing a means to eliminate it.
The techniques can serve as a model for close ecologies for space stations. Absolutely. Also, once humanity begins capturing asteroids to feed space industry in Earth orbit, we can build farm and forestry satellites in space and provide unlimited amounts of food and fiber anywhere in minutes from space delivered directly to consumers like JDAMs.
This will eliminate entirely agriculture and forestry on Earth (along with industry) and allow a very high living standard to be maintained while Earth's ecology returns as much as possible to its native state.
> power collectors, protecting them from wind, rain, dust, etc., enabling > a far lighter and cheaper design. I doubt it would add up, but it is > just a thought. Trench collectors feeding lines of PV arrays that are convectively cooled are a very cheap way to go. One of the problems with a linear concentrator though is that you're limited to about 208x solar intensity. So, your PV costs are automatically more than doubled. And, the current designs of the optics are rather higher priced to install and maintain. That's because at the hairy limit of concentration the system becomes very sensitive to minor perturbations - dropping a factor of 2 with a breeze. So, practical systems are usually 70x with reasonably priced frames, footers, and so forth.
> I agree with most of the rest of what you said. I see a high rate of > continued economic growth, lead by technological development, as fairly > essential for the well being of all. Though I do not expect people to > educate or work themselves any less. Without robots but with low-cost energy we can expect 4% to 7% economic growth rates - because the training and skills of worker are the limiting factor, and its hard to move beyond this level.
With robots and low-cost energy we might expect growth rates 8 to 10 x this rate! Why? Because we will easily incorporate any portion of the human corpus of knowledge into any robot electronically. Thus, skills play a far lesser role.
Heck, just having a reliable humaniform tele-robotic system
http://telerobot.mech.uwa.edu.au/ http://www.creare.com/telerobo.html http://world.honda.com/ASIMO/
will increase the efficiency of knowledge anywhere!
The distinction here can be made clear with a simple illustration.
(1) Human - a doctor must be present to deliver involved medical care. (2) Telerobot - a doctor must drive a medical telerobot to deliver involved medical care. (3) Robotic - a doctor must instruct a controlling program for a robot so that the robot may deliver involved medical care.
If we are constrained to humans, the ability to provide medical care to the global population must await the training and testing of human doctors. The vast amount of these doctors are trained to deliver medical care humanity already uses - very little brain power is used to expand treatments.
If we are constrained to telerobots, the ability to provide medical care is multiplied. A human doctor can be summoned anywhere in the world thus improving the efficiency of medical care delivery worldwide.
If we have robots that can deliver medical care as safely and reliably as the best human doctors, then all we must do is copy a software program from some master instruction tape and send robots hither and yon to await the delivery of medical care. Logistics are reduced to a simple problem of medical consumables supply.
Clearly the best we can do in any year is maybe add 7% to the pool of qualified doctors in the first scenario. In the second we may be able to raise that to 15% to 20% increase in medical care delivered per year. In the third case we may be able to raise that to 40% to 70%.
In cases where saturation of care has taken place (imagine a medical suite in every home, office and factory, along with air mobile medical suites at the ready throughout the world) - then the vast majority of people in medicine will begin to think about improving the nature and quality of medical care. That is, far more research will get done and the best human brains will radically improve the quality of medical care beyond even the best that we see today. And this will continue to improve yeilding ultimately indefinite life spans.
> Economic growth will make space > much easier. Absolutely! Focusing on reducing core costs will also make it easier. These two trends taken together will make spacetravel something very different than what we've become used to during the Cold War. The dreams and visions of the pioneers of the 1930s will largely have been fulfilled and surpassed.
> An interesting prospect with the tethered wing thing is to attach it to > a hybrid vehicle. This basically turns it into an electric and [quoted text clipped - 7 lines] > > Pete. Interesting idea. I'm having a little trouble envisioning this wing you speak of. But the idea of using a sort of windmill as a flight vehicle is novel! If I'm reading it right.
Pete Lynn - 16 Oct 2004 00:50 GMT > Interesting idea. I'm having a little trouble envisioning this wing > you speak of. But the idea of using a sort of windmill as a flight > vehicle is novel! If I'm reading it right. Not really, it is more a big winged UAV with a load carrying tether such that it is flying at full forward speed, (in a very tight circle), when lifting payloads vertically off the ground. Structurally it is far more efficient, and hence lighter and lower cost.
One possible application that might interest you is as the basis of a very direct and fast hydrogen distribution system. In a VTOL fashion transporting LH2 direct from production plant to end user at high subsonic velocities powered by the LH2 boil off. Vehicles anywhere up to a 1000 ton might be used though around 10 ton vehicles might serve smaller users better and be safer. If memory serves the hydrogen costs were only something like two percent per 1000 km.
I was originally thinking about this as a power transmission system for very off shore wind power, though it might work in the general sense. While piping of GH2 is probably cheaper long term, as a LH2 distribution system it is probably better as tank and insulation cost are greatly reduced. It is far more flexible, direct and requires a far lower initial infrastructural cost, it should be economically practical. It is a mass producible system.
Pete.
Pat Flannery - 16 Oct 2004 13:24 GMT >Not really, it is more a big winged UAV with a load carrying tether such >that it is flying at full forward speed, (in a very tight circle), when >lifting payloads vertically off the ground. Structurally it is far more >efficient, and hence lighter and lower cost. Oh....Dear....God! Mook has undergone binary fission, and now there are _TWO_ of them! This has to be the dire effect of electromagnetic fields from those damn EERs that everyone told us were the wave of the future- but which have only led to thousands of incinerated Electro-Flivver drivers and countless unwholesome mutations....remember: Birds Fly....Men Drink; Mook Thinks....and Turds Fly! Stop the insanity! Stop the insanity NOW!
>One possible application that might interest you is as the basis of a >very direct and fast hydrogen distribution system. In a VTOL fashion [quoted text clipped - 12 lines] >is a mass producible system. > You might want to consider some things here: 1.) What exactly is the tether made out of? Let me guess....Fullerine, right? 2.) What exactly is the tether hooked to at the base end? There's going to be a tad of a pull on it as the aircraft accelerates, isn't there? Let me guess, there are going to be two aircraft on it; one per side to balance the forces, right? 3.) I assume that the aircraft detaches from the tether once it's airborne (I sure hope so, or you've come up with an idea that makes Mook's laser-driven flying cars look safe- at least all they do is fry birds and decapitate buildings as the beams whizz and fizz on their way to the cars; this thing could mow down whole forests like a giant Weed-Eater); so, think about this a second- when the plane detaches itself, which way is it going to travel? It's going to come off the wire at around a 45 degree angle to it's normal direction of flight, and this isn't going to help its controllability any as it leaves. I once saw an idea like this on the cover of a 1930's Science Wonder Widgets magazine; in that case it was a airliner taking off the back of a locomotive running on a circular track... I notice this never caught on. ;-)
Pat
Pete Lynn - 17 Oct 2004 01:52 GMT > Oh....Dear....God! Mook has undergone binary fission, and now > there are_TWO_ of them! This has to be the dire effect of [quoted text clipped - 3 lines] > mutations....remember: Birds Fly....Men Drink; Mook Thinks....and > Turds Fly! Stop the insanity! Stop the insanity NOW!
:-)
> You might want to consider some things here: > 1.) What exactly is the tether made out of? Let me guess....Fullerine, > right? S-Glass, though spectra, kevlar, carbon fiber, piano wire, etc., would all work, they are just unnecessarily expensive. The atmosphere is not really thick enough to justify Fullerine. :-)
> 2.) What exactly is the tether hooked to at the base end? There's > going to be a tad of a pull on it as the aircraft accelerates, isn't there?
The same thing a wind turbine is attached to, though without the healing moment, the loads otherwise being proportionally about the same. The anchor has to offset the lift force of the wing. Even at twice the size of a 747, with similar power levels, that is still probably less than a 1000 ton.
> Let me guess, there are going to be two aircraft on it; one per side to > balance the forces, right? That is one of many options.
> 3.) I assume that the aircraft detaches from the tether once it's > airborne (I sure hope so, or you've come up with an idea that makes [quoted text clipped - 3 lines] > Weed-Eater); so, think about this a second- when the plane > detaches itself, which way is it going to travel? It remains attached to the tether, obviously there are numerous safety possibilities, apt analogy. :-)
> It's going to come off the wire at around a 45 degree angle to it's > normal direction of flight, and this isn't going to help its controllability
> any as it leaves. Could be worse, could be a space elevator. :-) Seriously though, I would suggest far off shore for big ones.
During WWII the Germans experimented with large Cody trains many kilometers high flown on piano wire. They had a few interesting experiences. I remember something about one instance where they lost the train and retrieved the piano wire by just winching it in across the country side, gaining all sorts of things in the process, like a sheep in less than perfect condition.
> I once saw an idea like this on the cover of a 1930's Science > Wonder Widgets magazine; in that case it was a airliner taking off the > back of a locomotive running on a circular track... I notice this never
> caught on. ;-) That is not the worst of them.
Pete.
william mook - 17 Oct 2004 12:12 GMT I'm still not getting it. Do you have a pointer to a picture or white paper?
Pete Lynn - 17 Oct 2004 21:40 GMT > I'm still not getting it. Do you have a pointer to a picture or white > paper? Beyond the primitive website no. I am still working on the control system of the prototype, so no working pictures yet.
http://www.inet.net.nz/~cbrent/pete/
Another analogy, a tail sitter fixed wing aircraft circling very tightly in fixed wing mode, with a payload, fuel, cockpit, etc., suspended beneath on a long rope at the centre of the flight circle.
Pete.
william mook - 18 Oct 2004 05:46 GMT > > I'm still not getting it. Do you have a pointer to a picture or white > > paper? [quoted text clipped - 9 lines] > > Pete. The rope would have to pull a lever or something right? The lever turns and generates power.
Pat Flannery - 18 Oct 2004 06:06 GMT >The rope would have to pull a lever or something right? The lever >turns and generates power. I still want to see somebody make this thing work: http://home.att.net/~dannysoar2/Whirlygig.htm http://modelbox.free.fr/photoscopes/Papin_Phot/index.html
Pat
Pete Lynn - 18 Oct 2004 08:16 GMT > I still want to see somebody make this thing work: > http://home.att.net/~dannysoar2/Whirlygig.htm > http://modelbox.free.fr/photoscopes/Papin_Phot/index.html > > Pat This is way cool, those were indeed the golden years of aircraft development.
(From 1914. A single very large blade helicopter powered by a gas jet through to the tip. The whole thing spins with the pilot sitting in the middle.)
I do not immediately see any reason why it could not be made to work - not that I am volunteering. :-)
Here is a modern UAV under development, (called the whirl), it has four blades instead of one with propellers at the tips instead of an air jet. Fundamentally it seems pretty similar.
http://www.newscientist.com/news/news.jsp?id=ns99996380
UAV's seem to be the driver of out there aircraft innovation at the moment, (SS1 excepted).
Pete.
Pat Flannery - 18 Oct 2004 18:31 GMT >This is way cool, those were indeed the golden years of aircraft >development. [quoted text clipped - 5 lines] >I do not immediately see any reason why it could not be made to work - >not that I am volunteering. :-) Imagine what happens if the bearings on the de-spun pilot's cockpit freeze up- he would get pretty dizzy pretty fast. :-D
>Here is a modern UAV under development, (called the whirl), it has four >blades instead of one with propellers at the tips instead of an air jet. >Fundamentally it seems pretty similar. The Germans had a plan for a a one-man helicopter "flying belts" during W.W.II, one of which appears to have had two counter-rotating rotors; each with one blade, and a drive motor counterbalancing it on the other side of the mounting shaft: http://www.germanvtol.com/baumgartl/baungertl.html Baumgartl looks like a worthy opponent for The Rocketeer in the top photo... but he needs a catchy name...let's see...The Rocketeer Vs. HelioHun ... yeah, that's the ticket! :-)
Pat
Mary Shafer - 19 Oct 2004 18:42 GMT > (From 1914. A single very large blade helicopter powered by a gas jet > through to the tip. The whole thing spins with the pilot sitting in the > middle.) You've got it exactly right. The helicopter spins. That is to say, with only one rotor the question quickly becomes whether the rotor or the fuselage will do the spinning.
The attempts to keep the fuselage from spinning include second big rotors, counter-rotating rotors, vertical tail rotors (very common), and no tail rotor (NOTAR). This last may have a fenestron rotor or vent engine exhaust or work aerodynamically.
> I do not immediately see any reason why it could not be made to work - > not that I am volunteering. :-) Draw the force and moment diagrams. The sums of each must equal zero, meaning every drawing has to have pairs of opposing arrows. Lift has to equal weight, thrust has to equal drag, moments have to balance.
> UAV's seem to be the driver of out there aircraft innovation at the > moment, (SS1 excepted). Actually, they have been the drivers for bleeding edge technology forever, give or take the autonomy. The Wright Brothers followed the lead of other experimenters in flying kites in the century before last. Dryden was spinning the SRV in the early '70s. HiMAT was less than ten years later. The RAE did some very clever control systems work at Larkhill, Woomera, and EDW in the '80s.
Mary
 Signature Mary Shafer Retired aerospace research engineer miliff@qnet.com
Pete Lynn - 19 Oct 2004 23:57 GMT > > UAV's seem to be the driver of out there aircraft innovation at > > the moment, (SS1 excepted). [quoted text clipped - 5 lines] > less than ten years later. The RAE did some very clever control > systems work at Larkhill, Woomera, and EDW in the '80s. And Langley with his free flying model aircraft. I had not considered that the UAV verse pilot argument is not a recent thing. UAV's have always been a crucial part of aircraft development, even in the early days.
To UAV, or not to UAV, that is the question. Whether it is more cost effective to suffer possible vehicle loss or use pilots to help overcome initial bugs, and thereby fix them? Or die.
If hardware is cheaper than pilots, then I expect you would normally chose the former. Hence low cost development should tend to favour the UAV, rocket vehicles are usually not cheap, biasing towards pilots. And so the tethered wing aircraft thing that I am attempting to develop should probably be developed via UAV. Thank you for the clarity.
Pete.
william mook - 18 Oct 2004 12:12 GMT > >The rope would have to pull a lever or something right? The lever > >turns and generates power. [quoted text clipped - 5 lines] > > Pat This is definitely weird. This is what I thought he was describing or something like it. Its just too weird to credit. I guess if maple seeds didn't exist no one would come up with a craft like this.
http://homepage2.nifty.com/chigyoraku/seed-Eur.html
Okay, I can imagine perhaps that a rotorary flying wing might be possible. But, other than the maple seed, why wouldn't we build it so there were one wing on each side of the center?
I'm thinking a powered maple seed could be built with micromotors.
http://www.me.berkeley.edu/mrcl/pictures/rockexp.gif
It might be a great way to disperse large numbers of small things across a large area. Drop a bazillion of the maple seeds out of an airplane and they spread out and blanket the sky above a target area.
What would they carry?
Hmm... surveillance equipment tied together with WiFi and equipped with GPS. That'd be way cool. You could survail an entire city very quickly. Scientific monitoring. You could listen for voices the same way. So, if you had the voice print of Osama Bin laden frex.
Any other ideas?
Pete Lynn - 18 Oct 2004 07:37 GMT > The rope would have to pull a lever or something right? The lever > turns and generates power. That is woefully awkward. Motor generators on the wing, with power transmission up and down the tether.
Pete.
william mook - 18 Oct 2004 12:00 GMT > > The rope would have to pull a lever or something right? The lever > > turns and generates power. [quoted text clipped - 3 lines] > > Pete. Hmm... I'd like to see a side by side comparison to prove that statement. You're going around in circles anyway right?
Oh, wait a minute. You're saying you're tethering it like a kite? So, its not going around in circles. Why di
|
|