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That’s about it

This week marks the start of the first sitting in Parliament for the Rudd Government.

Today Prime Minister Rudd gave the apology to the Stolen Generation.

So, that’s about it for this Pharoz blog.

[Can't quite say that it was fun though]

***

I will continue to write posts on the Becrux blog.

Hope to see you there…

Solar Energy Summary

It might be an idea to summarise the *Solar Energy category in Pharoz and put some of these posts into the Becrux (Mimosa) blog with links to the relevant Pharoz posts.The basic categories would be something like:

  1. Energy efficiency at a network level
  2. Storage of electrical energy
  3. Transport of electrical energy
  4. Fixing electrical energy
  5. Transverse horizontal wind turbines
  6. Transition from coal power to renewables (system wide)
  7. Carbon dioxide - Removal, transformation and disposal of CO2
  8. Applying usable kinetic energy to spacecraft through remote lasers

There is a separate post for each of the broad categories above with links to the relevant Pharoz posts. The more readily achievable ideas will be put in the Becrux blog while the more hypothetical will be kept in Pharoz. In the list above the topics in lines 1, 4, 5, 6 and 7 are immediately realistic, while those topics in lines 2, 3 and 8 are more futuristic. The topics in lines 2, 3 and 8 above work with each other as a system - all three would have to be realised to start up large volume space travel. Whether this is achievable now is a mute point. First you have to be able to imagine what you need to do.

And it’s not fantasy like in a book like The Hitch-hiker’s Guide to the Galaxy - these are incremental steps that can be researched to see whether they can be realised with current technology. Even if the answer to these questions may be NO now, it may be YES at a later stage.

And travelling in space is not a utopia. I expect people to organise themselves politically like they do now - with separate public and private realms, the rule of law combined with human rights, transparent and accountable governments, and so on.

Storage of electrical energy

Storage of electrical energy

Becrux:

24/08/2008 Silver lining [Web]

19/05/2008 Short and long term storage [Web]

Some Pharoz posts:

19/05/2007 Dynamic electro-magnetic storage [Web]

12/01/2007 Wave packets [Web]

12/11/2006 Sailing on virtual waves [Web]

11/10/2006 Hot potato, hot potato [Web]

***

Another idea for storing electrical energy. Capacitors can hold small amounts of electrical energy with little loss. When holding higher energies over time capacitors can fail, so the idea is to store high amounts of energy in capacitors for short amounts of time so that the capacitors do not become damaged. Pulses of electrical energy are stored by sending them circling through cycles of capacitors (and solenoids). This would involve large currents so it would have to be at superconducting temperatures. The question is whether you could configure such a complex system to hold large amounts of electrical energy, with a good energy density as compared to conventional fuels and storage methods. You would also have to consider the overheads of controlling such systems and keeping them at superconducting temperatures. I suspect that it may take some time to arrive at the point where such systems are commercially viable, if it were possible. It’s worth considering the idea at least.

Transport of electrical energy

Transport of electrical energy through lasers and satellites.

Some Pharoz posts:

24/10/2006 Solar Farms [Web]

10/04/2006 Analog to digital energy transmission [Web]

***

The basic idea is that the light from a laser made with a gas will be at a frequency such that the light from that laser can be absorbed by that same gas in a special cavity at a distance removed from the laser, and thus cleanly ‘catch’ the energy from the laser so to speak. While the resonant cavity used to generate coherent light in a laser might be small in volume, the volume of the catching cavity of a relay satellite would have to be big enough to ‘hold’ all the energy transmitted at one time. To mix metaphors, such a catching cavity would need to be lined with something that keeps the energy bouncing around inside, as with a thermo flask, and the lense through which the laser light enters the catching cavity would have to have a large shutter like a camera so that it can be open for only a short amount of time.

There would need to be a process within the relay satellite that in effect draws quality energy (preferably not thermal) out of the excited gas being held, and it would be something of a reverse process to that in the laser that pumps energy into the resonant cavity filled with that same kind of gas to start with. That last step of drawing out the energy in such a catching cavity once it has absorbed the energy from a laser would be the most difficult. I think the other steps could be readily achieved. If this last step can be realised efficiently in practice then you could use lasers as a medium for transmitting energy, at least in space. The terminology I am using here is crude but I hope this conveys the basic idea.

Changing kinetic energy of spacecraft through lasers

Changing kinetic energy of spacecraft through lasers

Becrux Posts:

17/03/2008 Moon base [Web]

16/02/2008 Sawtooth cross section [Web]

10/02/2008 Momentum or energy [Web]

05/02/2008 Orion shuffle [Web] (with simpler solar sails)

Pharoz Posts:

21/11/2007 Instruction-set surfaces [Web]

20/11/2007 A semblance of gravity [Web]

19/11/2007 Sound laser analogy [Web]

18/11/2007 Transmitting kinetic energy through lasers [Web]

***

Think about it. If a spacecraft were to be powered from remote energy sources what mechanisms would be available to to this? You could carry all the fuel from launch, use gravity near planets, electrical and magnetic fields would be too weak and dispersed and fixed solar panels wouldn’t collect enough energy to significantly propel the craft. Burning fuel to change the centre of mass in space seems sort of inefficient, even if it works. It has a single-cell biomechanical feel to it, like a free floating blob that inches along by periodically puffing up, shifting its weight and then contracting again.

If you could make a surface on a spacecraft that at a molecular level ‘kicks’ in a certain direction when it absorbs a photon of a specific frequency, then you might be able to move that spacecraft remotely through lasers. (I am using the term laser generically, the frequency can be outside the visible spectrum). Even if a small percentage of the incident energy (like 5%) could be used to safely move spacecraft in space that would significantly change the nature of space travel. Even so, at the moment you could call this science fiction.

Entity Relationship Identities

Not as citizens and without appeal to ER and her courts, it’s the E-R identity that counts. There’s an interesting article at Online Opinion about so-called federated identities (Plurality of Identities). It’s interesting to consider the impact of computer technology on the way that people understand each other, at least within some communities, such as the security community. The thing about linking all of our various identities, whether recorded in a database or through comment files, into one federated identity, as it seems to be called, is the fact that each federated identity comes down to a number. A key field in most large databases is preferably a unique sequential number. To combine a large number of identities into one federated identity would mean making that database key number for the individual concerned the one main identifier that links it all together. That number would have precedence over any other kind of identity, even the person’s name. Anyone not familiar with database systems would possibly not understand these points and its significance.

Some of the main issues around such database systems are about who has access, how far the databases go (do they even get to see items scanned at a supermarket and paid for by credit card, the times and places that a car eTag was read, etc), whether the person involved has any say in what is recorded and even systematic fraud. Systematic fraud is the most serious problem because it would most likely be difficult to detect as fraud. With things stored only electronically it would be relatively easy to do Orwellian revisions. Tied to that issue of integrity would be the reputations of many powerful people and protecting reputations through enforcing secrecy of the system. We saw some of this with the Haneef case. It’s about power and exercising that power in order to keep that power. It’s a far cry from “government of the people, by the people, for the people”. Transparency of these systems protects the public, while more security personnel does not necessarily mean more security, it could help small pockets of organised criminals become entrenched within the secret system. But of course, these systems persist as long as they are considered by the public to have integrity or the public no longer has any option but to comply. I wish I didn’t have to make these kinds of comments.

Difficult to explain

Here’s a train of thought that is sort of difficult to express.

The monotheistic religions start with an all powerful God which sort of provides a clean slate for creation, as with in the first chapter of Genesis. This idea of creation out of apparent formlessness has a parallel with some kinds of human action - the claim of terra nullius in colonial times is a strong example, but also for more mundane acts of creativity. It could also allows for free will, but there are many other cultural ways of doing this as well.

Such an absolute claim made by anything or anybody other than God must be followed by a Fall of some kind, a realisation of limits.

But even so, even after the Fall there is still the result of the intended action without consequence. Something is broken and it is difficult to point out what that is. It traditionally goes by the name of original sin and is assumed to be with every person born after the Fall. (These ideas are a discussion using some religious concepts.) But perhaps rather than being based in a flawed humanity, the original sin may be based in an unrealistic concept of God as omnipotent. The Fall transfers the blame away from the concept of a perfect God. And that precious idea, the omnipotent God, remains as it was originally.

There is perhaps a sense that sacrifice is sometimes a consequence of an initial audacious stepping out. The creative act may have been audacious and the person paid for it, but the consequences remain and the assumption of a clean slate within which that initial audacious action may have taken place becomes confirmed in some way. It’s like a disruption to the natural order that becomes solid through irreversible consequence and sacrifice.

But then in Christianity, what would it mean that God would be sacrificed in the person of Jesus? It is like a more humble concept of God, even while maintaining the original concept of an omnipotent creative God. There is still the possibility for creation and free will in human life but the blame, so to speak, for the Fall may not be all due to original sin in humanity.

And then again, the creative potential is still there and more honest and realistic. You could say that Christianity also tries to redeem God, even if that would not be admitted. It is difficult to express this idea properly. It’s not taking the mickey. The twentieth century ground on after Freddy’s claim that God is dead with the quick-fix failure of an idea to try to substitute Man into the role of omnipotent God. Twentieth century history and postmodernism have thoroughly ridiculed that idea.

So what does the Christian story have to say about the nature of God? The conventional Christian story is that Jesus redeemed humanity through his sacrifice, but could the Christian story also be about redeeming God? Now that would be a strange twist in the story! But ideas take a while to take root, if there is anything to this new perspective.

***

There are obviously different cultural contexts for the phenomena of sacrifice. In the Judeo-Christian religions it has various meanings, possibly related to the way God is understood. I think that in some ways of living, as with Buddhism which does not believe in an omnipotent God, there are different notions such as generosity and meditative practice. It’s a difficult topic to talk about but it is important because a notion of God is still part of our culture. In a way the Christian approach brackets [God] , unless of course they make out that Jesus of Nazareth was something of a triumphant Uebermensch. That would be missing the point in my opinion.

***

3 Jan 08

And creation here is meant as a cultural act by a person. The natural world changes continually with some aspects of things changing while other aspects remaining constant (such as mass/energy, momentum, etc). A creative act by a skillful person can have an effect in the physical world but that is more through something like guiding impersonal physical processes to create some thing or situation that may have been imagined. It would be nearly impossible for any person to construct even a biological cell or a strand of hair from the raw elements, but everything that goes into reproduction, eating and keeping a person healthy is covered through culture and the ways we live. Creative action is not about literally placing every atom in place from moment to moment, which couldn’t be done in any case.

***

4 Jan 08

These are not value judgments or opinions. The posts in this category are about seeing these topics about western religion and modernity in a different way. Whether I like it or not,  or whether you like it or not, is beside the point. What is important is that the ideas have consistency and that the ideas hold together. It is very difficult to explain a different paradigm and it is possibly something that can only be evaluated over a few generations.The point made in this post is that the problem of evil is related to the way that God is understood. The way a culture defines The Good will impact on the way that the culture defines what it sees as being not that Good. With the Judeo-Christian religions God is all good and all powerful so that prevents analysis to an extent. In pre-modern times you could not criticise directly the way that God was conceptualised for fear of excommunication, exclusion or worse. Even so, there also seemed to be something culturally unconscious, a sense of justice or truth maybe, that over time corrected for the nature of the problem.

Translating the Bible into local languages and the printing press had a profound effect on the cultural understanding of God within Europe. The Reformation was also about things such as the relation of the church to the people, the nature of authority, reading the Bible and its stories for oneself, having religious services that people could understand, and so on. The mystery in pre-Reformation religion was not just theological but through ignorance and the power relations of the clergy to the people.

Perhaps our problem today has to do with -  being stuck with the need for an ABSOLUTE Good without really acknowledging it. And being too clever and sophisticated to admit to such a cultural need. Think of nationalism, ideologies and totalitarian states, greed and consumerism, the fuss about perfection in our bodies and looks, fundamentalisms of all shades and colours, the way the public and media places celebrities in the public spotlight and then criticises every single perceived imperfection, as with Diana. God hasn’t died, He’s just gone kitsch. And it’s not a Good look. We still hanker for perfection, or carry on as if we expect it, somewhere; but still rip anything to pieces that we momentarily set our collective hungry gaze upon.

The ambiguity is in the way that God is conceptualised in our culture. The churches don’t really understand what is going on.  They seem to be stuck repeating tired formulas or else tarting up their image of God and church to match the times. It’s difficult to explain…

A Constructionist God

I was just browsing through some wikipedia pages: constructivist epistemology, theodicy, omnipotence and a few others about the history of ideas.

One of the apparent problems with the conventional way that the idea of God is understood has to do with the problem of evil. If God is all powerful and all knowing how could there be evil in the world? Theodicy tries to reconcile the two.

The conventional way that God is conceptualised seems to be in terms of essences. Some questions in the philosophy of religion are about trying to define the nature of God and then to reason about it. Theology takes God as self-evident and goes from there. This is only a mug’s one-line descriptions of large fields of knowledge.

And of course Man was made in the image of God.

These questions are also tied to questions about free will.

I think one of the most important aspects of God has to do with the Creation stories. In the religions with a monotheistic God those creation stories are like an unconscious template for creative human action, at least in our small ways. That creative process is replayed repeatedly and you might even attribute free will to that repetitive creative process.

Religions are socially constructed and to an extent even the concept of God is also socially constructed (although that still means that it is beyond any one person to fathom the full extent of the idea of God over the past, present and future or even in any one moment). You still need a name for something that is unknowable and can not be named (or defined) in the same way that other physical objects, things or events can be named.

The important thing for the creative process is the protection, like a nest for an egg, so that the new creation can be brought into the world. Saying that God has the qualities of omnipotence, omniscience, omnipresence and benevolence provide that nurturing space. It would not provide the authority and confidence for free action without that. Still, therein also lies the problem of evil. There is the Genesis but after that there also needs to be a review. Free will without concern for the consequences is a problem. And then there is always other people and society to consider. Perhaps it is characteristic of the monotheistic religions to have cultures that emphasis bold beginnings but then suffer a Fall of some kind, unless difference and the social are acknowledged.

So there is a socially constructed God construed as being specifically not socially constructed at all but that is instead eternal, all powerful and unchanging - universal. And then there are the actions of the faithful that follow, assumed to be sanctioned by an all powerful, universal God. There is a sense that this on-going creation sometimes tramples and trespasses beyond legitimate boundaries and limits. Social exclusion and power is sometimes used to entrench that exclusive worldview.

But that conventional monotheistic approach sometimes doesn’t look that good in a plural society, and claims of moral authority can sometimes come undone. At least with a Holy Trinity the emphasis could be shifted to one of the other two. Perhaps the Holy Spirit is more suitable for these times. It was also there at the beginning. And mankind still remains to be made in the image of God.

Science and narratives

One of the main differences with this new interpretation is about recognising the context and limits of individualism. It’s difficult to describe succinctly, and this is making a very crude attempt of it too.

In pre-modern times the church and local community did provide a context and limits within which most people lived. I suppose that the Enlightenment ideals grew over a long time out of that solid understanding of society and people’s place in it. Yet the Enlightenment with it’s industrialisation, science, migration from rural communities to large cities, and occasional crises and revolutions also undermined that social context where people can live safely and contentedly.

Pre-modern life was certainly not idyllic. Yet you also find with some of the revolutionary ideologies that they idealise aspects of that pre-modern life. Rousseau could be a source for a quote at this point. You could include some kinds of religious fundamentalism, national socialism and communism as ideologies that tried to turn the clock back or that try to harness modern science within something like a pre-modern social order (that just happened to also be authoritarian). Personally I think the reality of communism had nothing to do with a classless society. The people in the dominant political party of one party states constituted an elite class for those societies. Marx deliberately tried to find a way to reconnect workers in modern societies with the product of their labour as was the case in pre-modern societies, at least in theory. Communism may be a world apart from pre-modern society, but there are some important threads that link the two, so the claim made above is not as far-fetched as it may at first appear.

The Enlightenment did, however, emphasise the Individual; the rational individual. In the popular mind there is still a strongly negative connotation to some of the Enlightenment ideals. I think part of this is because science and industry can appear indifferent to human society and a person’s place in it. It is really tricky to untangle these ideas. Modernity does not in general pay due attention to society and community, and that may be part of the cause for cynicism about science and industry.

All I wanted to say, or am asserting, in this post was that the pre-modern world view is based more around narratives of people and how they live in communities. The fundamentalist religions seem to be harking back to a pre-modern world. Modernity grew out of a pre-modern world, obviously a tautology, but it initially took some things for granted, such as society, in ways that we no longer even consider or may be aware of these days. I am not saying that the social context in those early modern days were all good, or even that good for most people. It would have been a hard life. Perhaps what I am saying is that the problem may not be with modernity and the Enlightenment ideals, but that we have over time lost the social context and that we have to consider that in theory as well.

The left and right political divide has formed in an ambiguous way where the left champion society but with Enlightenment ideals, while the right champion the Individual but more in a pre-modern conservative context. There is a strange twist in the old way of dividing left from right. Both sides of the political divide could claim to represent people in communities, and yet both sides could miss the point.

An alternative, as stated many times through this blog, is to recognise the difference between public and private. The public world is about testing knowledge, while the private world is more about affirming others in our immediate circles. You can have both, but there is a structure that separates the two modes. Science as well as narratives. That approach is usually found at the centre of the political spectrum. Does that make sense?

Nothing added, nothing removed

A new interpretation does not change the text that is interpreted. The text is as it is; nothing added, nothing removed. Furthermore, something that we interpret in a certain way today, and our responses to this, may be interpreted in a different way in the future, as in a few hundred years. Basically in theological terms, God’s will is beyond any of us to know.

To put it bluntly,  some people inspired by endtime rhetoric and who are actively seeking to bring that about may be viewed in the future as the very thing they thought they were not, and they may find that they have become the very thing that they thought they were opposing.  You can view the last book as a reductio ad absurdum or you could view it as a prophesy. Either way, if that book inspires some people to act in globally destructive ways it has worked both as a prophesy and a reductio ad absurdum for those approaches that take it as a prophesy. It’s an inescapable double bind.

You have to also think about how these things will be viewed in a few hundred years as well. A new interpretation is not watering down the text, adding to it or removing from it. Who is to say whether that new interpretation is an important aspect of that text? All I have to do is make the case. It may be some time before these questions are settled. Still, this new interpretation does give people a choice. It’s a rational choice. Maybe that is the main point. The main problems we have now are about global warming and meaning in the modern world.

Merry Christmas

Wishing everyone a Merry Christmas.

Lets hope next year will be a good one.

Kind Regards, Robert

Transverse *Horizontal* Wind Turbine

A quick look through the Wikipedia pages for wind turbine designs shows that there is a general difference in design between turbines with a horizontal axis of rotation or those characterised with a vertical axis of rotation. Some of the vertical axis designs consider a changing angle of attack for the airfoils (through a spiraling airfoil) and they vary as to whether the airfoils are primarily used to provide lift as with more conventional airfoils, or drag as with sails. This new design idea blends many of these ideas, but as far as I can tell it is still a new design idea. The new design would be classed with the horizontal axis wind turbines since the axis of rotation around the hub is horizontal but perpendicular to the direction of the wind rather than parallel with the wind as with conventional wind turbines.

This new design idea also depends on a varying angle of attack and has a variable torque over the one cycle as with the vertical wind turbines. It is partly inspired by the biomechanics of fish swimming. The design could perhaps be such that on the up-stoke the airfoil relies on lift while on the down stroke the angle is such that drag is the major force on the airfoil. The design depends on varying the angle of attack of the airfoils within each cycle. That itself would add to the design complexity and wear of parts. The airfoils of such a design may appear like the airfoils of small fixed wing aircraft in shape, rather than like propellers. There are three orthogonal axes of rotation, all with varying pros and cons for use in extracting energy from the wind.

A very basic image with a front view of the design idea is shown below.

Transverse Horizontal Wind Turbine

A side view for this class of wind turbine is below:

Side view of Wind Turbine 2.0

Transverse Wind Turbines

It’s worth exploring these kinds of ideas for transverse wind turbines to see if they might have advantages over conventional wind turbines. This is the time to do this research before massive amounts of money are invested in wind power generation. There may be good opportunities for Australian businesses to start up in this industry. If you could design middle range transverse wind turbines so that they were mechanically robust, cheap and easy to install and maintain, and that could be mass produced you might be able to sell large volumes of these units.

One advantage of these wind turbines might be that they could be installed closer to the ground than the conventional wind turbines and you could install them closer together on stepper hill slopes without them being eye sores, as long as some lark doesn’t paint them to imitate the Red Baron. Windy coastal hills may be perfect for these units. I used to live in the Northern Rivers of NSW in Lismore and Lennox Heads and the coast around that area might have some good sites. The main problem with conventional wind turbines is that they are so tall that they scar the aesthetics of the landscape and they can be noisy.

Research into these transverse wind turbines would take quite some time. Springing the idea now might prove to be very timely and might save substantial costs in the long run. It’s surprising that this approach hasn’t been tried before. By exploring these new ideas and approaches in this solar energy category we might actually be saving ourselves decades of time and a lot of money with regard to changing over our energy systems to cope with global warming. That is because these new ideas help with reconsidering our options and focusing on what approaches might be most effective for reducing our carbon footprint. That’s no small feat, even if it hasn’t been acknowledged. This blog has covered a lot of new ground here but perhaps I was always just in the right place at the right time.

It would help if we all realised that our goals are in the same direction.

And one further point is in order. We have a problem with global warming PRECISELY because our current energy systems are not up to scratch. You NEED to explore alternatives to the current status quo and that means you have to try some approaches that will not work and some that will. It is RESEARCH that sorts these ideas out. You will not be able to  google for new ideas. They aren’t there! Another point about the creative process is that what you have at the end of the process is quite distinct from that act of creation, be that in the arts or sciences. The mess and apparent chaos in an artist’s studio is not what what you see on a gallery wall in a finished artwork. The same goes for the sciences. The written reports may be neat and fully referenced but the work leading up to those reports may take years of work, testing what worked, what didn’t, why it didn’t, whether this tweak will improve precision in a measurement, and so on. This blog is the creative work in progress. It is not the finished product. There is a difference. Blogs make the creative process public, but you don’t judge blogs in the usual way that an academic, say, would judge published articles. This is not pseudoscience just because the research into the ideas has not been done yet. Many of the ideas are solid. The alternatives are considered and some new ideas, while sounding improbable themselves, may lead on to other ideas that are more realistic. That’s how it goes. In business jargon you might call it brainstorming. There is nothing wrong with it. The point is THE WAY OUR ENERGY SYSTEMS ARE CONFIGURED NOW IS DYSFUNCTIONAL. That must obviously be the starting point. I find the attitudes of Australians to these new ideas weird and puerile.

A simpler angle of attack

Another idea is to have the axis of rotation perpendicular to the wind direction rather than in line with the wind as with conventional wind turbines. You could have perhaps around three airfoil blades parallel with the ground arranged symmetrically around a hub as if on something like on the rim of a large wheel, something like a ferris wheel, but from strong supports off the hub so you don’t need the rim to be connected as with a wheel. The direction of rotation would probably be best if it was rising to the front and failing to the back of the wheel, with the front being the direction from where the wind is coming from. When the airfoil is closest to the ground the angle of attack for the airfoil is set to lift upwards and once it is at the top of the cycle the angle of attack could be set so that the wind pushes the airfoil downwards. The airfoil itself might also have to be flexible if you wanted the up-lift and the down-lift to be of similar magnitudes. A more rigid design of airfoil would be okay if you could rely on the up-lift doing most of the work, ie with slightly faster wind speeds.

The airfoils create a torque around the hub. The rotational energy of the airfoils around the hub could be used to drive a generator in a more simple set up that with pistons and hydraulics. The only difference with conventional wind turbines is that the axis of rotation is perpendicular to the direction of the wind. The blades by this design could also have large surface areas and the changes in the angle of attack for the airfoils as they move through the cycle could be quite small. There might also have to be some mechanism to dampen the aerodynamics of the airfoils for strong winds, for example by opening vents along the airfoil, so the lift forces don’t become excessive.

The advantage would be again that the major component of lift for the airfoil would be in the direction of motion for the airfoil. This design has the problem that the supports need to be on either side of the hub and wider apart than the length of the airfoils, and so the direction of the wheel would be fixed or ideally the two supports would join above a single support with a swivel. Something like a tail with a vertical airfoil could be used to keep the contraption square on to the wind. This design also provides some bounds to the size of the wind turbine so perhaps you could place them closer together in the field, by position and at varying heights. Some modeling could be done on the optimal shape for the airfoil blades. I suspect that with this design the best shapes would be more squarish or oblong with a larger surface area (winglike) rather than thin like for the rotational propeller-like airfoils. Stability may be an issue for the design.

It would probably look more compact than the conventional spinning airfoil wind turbines and it would probably be less of a threat to flying parrots. They might be good for slower wind speed situations and more compact in terms of space than conventional wind turbines. It would be hard to work out the pros and cons for this approach without building a well thought through prototype, provided that the design idea isn’t too complicated and clumsy or arguably too inefficient to start with. This design follows on from the one in the previous post by having three or more airfoils instead of the one and by having the pressures from the lift of the airfoils working on the torque around the hub and all in concert. The airfoils themselves in this design also change direction like in a tacking sail boat as with the previous post. This design would be more simpler.

A simple cross section view of this idea for a wind turbine is below.

Wind Turbine 2.0

Fixed airfoil wind power

Going off the previous post, maybe you could build a new class of wind power generators that don’t use spinning airfoils. You could have large solid sail-like airfoils that sway alternatively to the left and right in a breeze. The lift from the airfoils make the airfoil sway from side to side and this could change the pressure of a fluid that is pushed by the swaying airfoil from side to side through a turbine, and thus generating electricity. The angle of the airfoil-sails would be as if tacking in a boat. As the airfoil moves out to one of the edges, either right or left, the direction of the airfoil-sail could change to send it swaying back in the other direction. It would be like it was tracing out a figure eight (or infinity) pattern.

The advantage of this is that the major component of lift from the airfoil can be harnessed for electricity generation. With large sails energy might even be extracted from faint breezes. The design might also be easier with large solid sails off towers swaying like reeds. The design might be more suitable to spinning airfoils in some cases. The resistance of the hydraulic fluid through the turbine would affect the speed on the sail’s motion. Just an idea.

*** 18 Dec 2007

The pressure from the large sail-shaped but solid and rigid airfoil(s) could be used to drive a piston or two with water or some other fluid as the medium. The large water filled shaft(s) with the pistons in them would be connected by pipes with a water turbine somewhere along the line, so as one shaft is emptied through pressure from the airfoil, the other shaft fills. The water turbine would stop, speed up in one direction, spin constantly while the shafts empty and fill respectively, slow down and stop, and then start the process again in the other direction as the airfoil tacks to the other direction. It might be similar to simple harmonic motion, without being as simple as sine waves. The water turbine would need to be connected through gears to a electricity generator so that the generator would spin in the one direction. Perhaps a flywheel could be part of the system to keep the generator going constantly while the water turbine lows down, stops and changes direction.

With ideas like this it is difficult to express the idea by analogy without sometimes sounding a bit silly. Analogies work by highlighting some things and ignoring others. All models in science simplify things, which means they highlight some aspects of the process in question and ignore others. Looking down on such a fixed airfoil wind tower the airfoil would possibly make a motion that could be compared to the tail of a fish in a flowing stream where the fish is stationary with regard to the land. It would move gently from side to side.

Such a airfoil may still create a substantial amount of energy because you could have airfoils with large surface areas, compared to conventional wind turbines. And as stated above, a larger proportion of the lift from the airfoil would be in the direction of motion of the airfoil.

Wind Turbine Tweak

In one of my maths courses at uni I tested an idea in theory that most people would have thought was amusing and from too way out of left field. Energy might be extracted from wind turbine blades spinning at slightly variable speeds from motion of the blades moving alternatively forwards and backwards, rather that all the energy being extracted from the rotation of the blades. With the airfoils of wind turbine blades the largest proportion of the aerodynamic lift is in the direction of the wind (over 80% from memory) and only a small proportion of the lift makes the turbine spin.

If the blades could be made to periodically slow down and speed up slightly, with the energy from the slowing down phase being harnessed then there would be another component of energy that could be derived from wind turbines. That energy from the flapping of the blades is potentially more than the energy derived from the spinning.

Initially you might think about mechanical ways to have flapping blades, but that is unfeasible and silly. The added cost from complexity, maintenance and wear rule that option out.

Another idea would be to do it though a flexible blade (with a moderate weight at the end perhaps) and hydraulics, perhaps. The faster the blade spins the more the blade bends increasing the pressure in fluid on the underside of the blade. It would be similar in concept to how a bimetallic strip bends with a change of temperature. The weight at the end of the blade could be used to temper the bending of the blade as its speed varies regularly. So the blade slows down slightly, the aerodynamic lift on the blade reduces so then the blade straightens out again. The energy could be derived from the changing pressure of the hydraulic fluid. The flapping blades work like a pump in a cycle.

This modification to the design would take some time to work through. As far as I know this approach has not been tried before.

Feminine principle

[Cross posted on Becrux]

Christian theology has the Trinity; God, Jesus Christ and the Holy Spirit.

The Holy Spirit is more hidden from view and more elusive, so writing about it is sort of futile anyway. I would associate the Holy Spirit more with the feminine. A common symbol of the feminine from other cultures is the moon, and how it waxes and wans between the new and full moon in a regular cycle.

In the story of Jesus 2000 years ago he was baptised with a symbol of a dove and he spent forty days in the desert. The symbols of the dove, the forty days in the wilderness and even his tempters in the desert hark back to the story of Noah with similarities to do with the duration of the flood, the crow and the dove.

The connection I’d make is between the crow and the new moon, and between the dove and the full moon. Then there is also the idea of pregnancy in these stories, but not in a crude way please.

It’s not that you could say the feminine is good like a dove or bad at times, it is more that the feminine is indifferent at times to people’s hopes and fears. Birth and death happen. Cycles begin and end in a way that could be characterised as the moon cycles from maiden to mother to crone (and then back to the maiden). [Does that match the pattern of a 3 act play?].

Masculinity wants certainty. The moon cycle is a certainty, but not the maiden to mother parts of it alone. The problem that the story of Lilith highlights is that an attempt to keep only what is perceived as good in the feminine and banish what is perceived as bad can not work. It ends up sending the genuine feminine into hiding, and turns it into a false facade of motherhood goodness behind a seething, negative and vicious unconscious.

Most cultures have stories that help people understand and deal with the process of grief. Even the story of Jesus’ death and his resurrection follows this pattern. But the feminine principle is still shunned in our culture, even as Sophia calls out from the rooftops. While the feminine remains artificially polarised in the Judeo-Christian cultures the problem will persist and, in Christian terms, the Holy Spirit can only remain in the shadows. It’s funny to see some of the fundamentalists who might contest such a proposition. Archetypes are tricky things to work with, they end up toying with you in ways you might not expect. A society and culture needs to find ways to deal with them in a healthy way.

Beta Crucis - Becrux - Mimosa

Beta Crucis, Becrux and Mimosa; those are the names for a prominent star in the constellation of the Southern Cross, Crux. Becrux is apparently the 20th brightest star from earth [List_of_stars_in_Crux]. The five brightest stars of the Southern Cross feature on the Australian flag. Becrux is the leftmost star of the Southern Cross as it is on the Australian flag. The five brightest stars in the constellation can be named clockwise starting from Alpha Crucis or Acrux as the base of the Southern Cross.

Becrux is also the name for a new blog that I will be keeping.
The new blog is at the address http://www.7gs.com/becrux
It can also be reached through a redirection shortcut at becrux.net

Becrux Logo

The tone of this Pharoz blog was critical of the Howard Government and now with a change of Government that tone no longer seems appropriate. I was not only critical of the Howard Government but I also regularly offered creative and positive alternatives. I was very surprised that these dissenting ideas were misunderstood as they obviously have been. I am still very surprised…

With the Pharoz blog I regularly thought that I didn’t have anything else to write about, but something usually turned up post by post. There wasn’t any plan to it.

So I don’t know how the Becrux blog will turn out over time.

Rule of law

Now this is an aside about a topic in this blog category that may need to be expressed explicitly. It is a comment on ideas within some of the Western religions. If the idea of the second coming of Jesus could be about a reinterpretation rather than a kind of literal reincarnation, then wouldn’t the idea of the rule of Jesus after such a second coming or reinterpretation also be more abstract rather than a literal kingdom? There are variations but some of the Western religions make out their Messiah to be something of a ruthless political ruler, one of the images has him running around with a figurative iron bar popping any cracked clay pots that happen to stand in his way. You’d have to wonder about any Western politician that may have those kinds of delusions. Perhaps they’d be in two minds when walking along the corridors of power, taking a bob each way with a swagger and a lumber.

Anyway, an ideal such as the rule of law combined with human rights is something that can not be corrupted, it will not age and can be long lasting, and such an ideal is something that can be universally argued for apart from any particular religion or culture. It won’t be limited by quirks of personality. I think it is fair to say that most people would want to live in a functioning liberal democracy under the rule of law and with human rights. The story of Jesus’ arrest, sentencing even while being innocent and then execution two thousand years ago is a lesson about the value of having a separation between church and state, and the consequences of a failure of the rule of law with human rights, among other things.

So the idea is quite simply that a literal interpretation of messianic prophesies may not be realistic or achievable, they may be inherently controversial, and if people act to try to fulfil those prophesies this can be very destructive. If instead these things are reinterpreted in a more abstract way then, paradoxically, you might find that that reinterpretation might actually achieve what was desired. That reinterpretation may be the key. A proposed rule of iron can instead become a rule of law with human rights. And it wouldn’t matter that many people are not part a particular religion since they would have all the same rights and responsibilities as everyone else. At least you’d be able to argue a case for the rule of law with human rights within modern states.