The question is:

How could you bring thousand of terawatts power from space to Earth safely?



To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

OK to start this discussion between SB space and science experts
I could say that
it may be completely unnecessary
to produce energy in space
and
brings it back to Earth.We may have abundance of Green Energy and utilizing all tide , wind and solar at deserts we simply don't
need to import anything from space.


Oppps !



theconversation.com/solar-panels-in-sahara-could-boost-renewable-energy-but-damage-the-global-climate-heres-why-153992

oppps !!!! again,

that is good new.
for us Aussie
We are not Sahara and will not endanger anybody

Karman Space towers? Orbital rings? It's a lot of stuff to get up there but rockets are a bit primitive.

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Ian K said..
Karman Space towers? Orbital rings? It's a lot of stuff to get up there but rockets are a bit primitive.

yes, that what I told to the authors one day already,
more like a marvel comix book then proper sci-fi

some knowledge of physics law also may be helpful

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Ian K said..
Karman Space towers? Orbital rings? It's a lot of stuff to get up there but rockets are a bit primitive.

anyway ..
the hot subject of discussion was if you could send gigantic energy safely from orbit back to Earth.
In the form of microwave radiation.
The author claim YES
and I say NO.

I say military everywhere will be happy to get a hand on one of those.
They say, that radiated energy is completely harmless , and safe.
I say NO.


so here is example in scale 1 to billion what is at stake




our military wants for sure one of those for Sydney now...
They may say "SAFE"
I rather say" but COVID is safer.".

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Macroscien said..
The question is:

How could you bring thousand of terawatts power from space to Earth safely?

To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

Just be careful where you are walking.

Select to expand quote

Harrow said..

Macroscien said..
The question is:

How could you bring thousand of terawatts power from space to Earth safely?

To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

Just be careful where you are walking.

Does a tinfoil hat help in this case?

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FormulaNova said..

Harrow said..

Macroscien said..
The question is:

How could you bring thousand of terawatts power from space to Earth safely?

To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

Just be careful where you are walking.

Does a tinfoil hat help in this case?

interestingengineering.com/caltechs-space-based-solar-power-project-could-power-our-planet?fbclid=IwAR3b4isKKNRV_xjUB8DmPbBmfYXEfFOjpKO6G7JWx_KjU-7ppKPnzaXfhVc


That is good question .....
because that is what exactly I suggested.-Governments do with benign power plan sending microwave from orbit.

Will cook enemy opponents , light the bushes and tree of course.
Those educated in physics will tell you to use Faraday cage to protect yourself.

Faraday cage in general protect you from high frequency currents.
But I still have mu doubts ( and some even agree) .
By tuning microwave klystron geometry you may have any wave length / frequency you like.Some will bonce nicely of your metal hat some will load it with electricity and electrocute you in instant you tune the microwave guide channel and you may have stream wide as football yard or focus on one head only


yep. obviously they will tell you NOoooo, nobody will do such thing intentionally.
But could you trust Chinese or Russian hanging such microwave oven above our head in orbit . In vice verse of course.

but why we shouldn't worry too much...
lets have some fun

Select to expand quote

Harrow said..

Macroscien said..
The question is:

How could you bring thousand of terawatts power from space to Earth safely?

To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

Just be careful where you are walking.

Apparently it's all OK. They bring the power down as microwaves at less intensity than sunshine. All spread out so you need more area than ground-based solar panels to pick it up. But it's chicken wire collection so you can farm below it, even peg it out it over the cities you want to power??

The Karman Tower 100km high sounds interesting. The idea being you pump something there and back from ground level to relieve the structural stress on something so high. I don't think they've allowed for the back pressure in pumping something 100km. And how much lift assist do you need tugging at the top? It's a lot of water that has to be pumped and the pipe has to be narrow or the weight of water in 100km of it makes it all self-defeating. Don't think so.

Select to expand quote

Ian K said..

Harrow said..

Macroscien said..
The question is:

How could you bring thousand of terawatts power from space to Earth safely?

To initiate discussion
i could express my own option /expertise
and
then to finish I could say how we do this ( resolved the problem on planet I come from )

Just be careful where you are walking.

Apparently it's all OK. They bring the power down as microwaves at less intensity than sunshine. All spread out so you need more area than ground-based solar panels to pick it up. But it's chicken wire collection so you can farm below it, even out it over the cities you want to power??

The Karman Tower 100km high sounds interesting. The idea being you pump something there and back from ground level to relieve the structural stress on something so high. I don't think they've allowed for the back pressure in pumping something 100km. And how much lift assist do you need tugging at the top? It's a lot of water that has to be pumped and the pipe has to be narrow or the weight of water in 100km of it makes it all self-defeating. Don't think so.

i suggest we could use magnets instead of water.
Magnets fountain to be exact.
If we shoot up magnets in atmosphere less/ airless environment -
then magnets will fall down converting all gravitational energy into kinetic
then using "magnetic trampoline" at bottom we could send those magnets back to exactly the same high.
Bouncing indefinitely without any extra energy needed! by magnetic trampoline I simply understand some magnetic rail / pipe to redirect returing magnets 180 degree.

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Macroscien said..

i suggest we could use magnets instead of water.
Magnets fountain to be exact.
If we shoot up magnets in atmosphere less/ airless environment -
then magnets will fall down converting all gravitational energy into kinetic
then using "magnetic trampoline" at bottom we could send those magnets back to exactly the same high.
Bouncing indefinitely without any extra energy needed! by magnetic trampoline I simply understand some magnetic rail / pipe to redirect returing magnets 180 degree.

Yes magnets would get away from the watery friction. I'll have to think about it.

I jumped onto his "orbital rings" video. The last in his series of mega space engineering concepts. (Will I get sucked into his earlier ones? ) Seems to make sense? Everyday materials! Not even carbon fibre. A lot of it though!! Can't see the human race lasting long enough to get that together.

Drive your car to the moon, hopping between concentric rings along hollow tethers! Way to go.

Select to expand quote

Ian K said..

Macroscien said..

i suggest we could use magnets instead of water.
Magnets fountain to be exact.
If we shoot up magnets in atmosphere less/ airless environment -
then magnets will fall down converting all gravitational energy into kinetic
then using "magnetic trampoline" at bottom we could send those magnets back to exactly the same high.
Bouncing indefinitely without any extra energy needed! by magnetic trampoline I simply understand some magnetic rail / pipe to redirect returing magnets 180 degree.

Yes magnets would get away from the watery friction. I'll have to think about it.

I jumped onto his "orbital rings" video. The last in his series of mega space engineering concepts. (Will I get sucked into his earlier ones? ) Seems to make sense? Everyday materials! Not even carbon fibre. A lot of it though!! Can't see the human race lasting long enough to get that together.

Drive your car to the moon, hopping between concentric rings along hollow tethers! Way to go.

Before to go into habitable orbital rings
I proposed few experiments that we could do NOW.

Lets sent into our orbital micro gravity : thin but strong line, could be something like spectra.
we make ring small , then bigger and bigger /
We spin it faster and faster - so centrifugal force keep the perfect round shape.

But then unexpected happen.
We will not be able possibly to increase size of this circle indefinitely, and speed even when well below tensile strenght of material.
As some point harmonic frequencies come to play.
The longer the circle then more difficult to control.

Like by analogy problem with controlling our plasma in our toroid fusion vessel,. Suddenly bulbs comes to play and nothins seems to be like we imagined in safe place.
We need to smooth and dislodge first those before we could go even further.

Summarizing. Theoreticaly we could buy at nearest finish shop 40,000km of fishing line, made of spectra,.
load on Falcon 9 and ship into space.
Unroll and make full loop around the Earth.
Don't you think so?
I doubt. Those nasty harmonic frequency will kill our looping device.....Obviously orbital ring will face exactly the same problem by magnified by factor of x

BTW
I did invent orbital ring ( independently) so there is only matter of egg and hen question, who was first, But that doesn't bother me at all .

interestingengineering.com/caltechs-space-based-solar-power-project-could-power-our-planet?fbclid=IwAR3b4isKKNRV_xjUB8DmPbBmfYXEfFOjpKO6G7JWx_KjU-7ppKPnzaXfhVc

I should post this at very top,
sorry
my mistake

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Macroscien said..

I doubt. Those nasty harmonic frequency will kill our looping device.....Obviously orbital ring will face exactly the same problem by magnified by factor of x

BTW
I did invent orbital ring ( independently) so there is only matter of egg and hen question, who was first, But that doesn't bother me at all .

I think if they figured out how to get it up there they could figure out how to dampen out unwanted wobbles. Magnets again. After all, they can spin protons around at light speed in the LHC without them hitting the walls - that can't be easy.

The loads on the stationary sheath of the rings would have to be evenly spread out though. Supporting any significant point load in what is essentially a straight section. How many space elevators do you think they'd hang off it. 10, 100 , a thousand. Even for a 1000 elevators connecting the ring to earth that's 40 km separation between each = a 40km beam!. How much can you load up the middle of a 40km beam?

Look at this,
just a few day ago ( our time ) I said so and here it is
Japanese did microwave weapon fighter !
That was quicker then I did expect.

At least somebody is listening to my ideas and act quickly on them !
One day it could be even electric tractor and excavator !



interestingengineering.com/the-extraordinary-power-of-japans-sixth-gen-f-x-fighter-jet?utm_source=Facebook&utm_medium=Article&utm_campaign=organic&utm_content=Aug19&fbclid=IwAR15fsRAN-s0y9g7m_whnXtmEH0SCuALKs1P8NJcstVQalS0jQgCoDtyoe0