Paper published on producing arbitrarily long nanotubes.

American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Finally, nanotechnology can now fulfill its potential to revolutionize
21st-century technology, from the space elevator, to private, orbital
launchers, to 'flying cars'.
This crowdfunding campaign is to prove it:

Nanotech: from air to space.
https://www.indiegogo.com/projects/n...ce/x/13319568/
----------------------------------------------------------------------------------------------------------------------------------

Dear Robert Clark:

On Saturday, August 20, 2016 at 11:37:08 AM UTC-7, Robert Clark wrote:
....
Next stop: the space elevator.

.... how do you grip them without friction?
.... how do you keep terrorists away from them?

I sure hope you are right, but I don't see how it can be made to work.

Look for undetectable garrottes as the first application.

David A. Smith

In sci.space.policy Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

There was an awful lot of "might" and "may" in that article. Nothing
that suggested anyone has gotten a sufficiently strong construct out
to say a meter or even 10cm.

rick jones
--
firebug n, the idiot who tosses a lit cigarette out his car window
these opinions are mine, all mine; HPE might not want them anyway...
feel free to post, OR email to rick.jones2 in hpe.com but NOT BOTH...

In sci.physics Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

Nope, the next stop would be ANYTHING practical.

Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Finally, nanotechnology can now fulfill its potential to revolutionize
21st-century technology, from the space elevator, to private, orbital
launchers, to 'flying cars'.

The lack of flying cars has never been a materials problem. There have
been lots of flying cars built.


--
Jim Pennino

On 8/20/2016 1:37 PM, Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to
Production of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.


space elevator is a total joke,
electric elevator? how much do the copper cables weigh ?
Gasloine powered? how much gas and O2 weigh ?
How does the astronough at the top, jump off into orbit ?
how do you keep it from falling over ? Skyhook ?
how do you keep it from wind blowing it over ?
How much cement is needed for the base ?
how many miles of guy wires ?

Dear Sergio:

On Monday, August 22, 2016 at 11:38:50 AM UTC-7, Sergio wrote:
....
space elevator is a total joke,

First, imagine you have a bucket, a long rope, and you spin around swinging this bucket out. You are "Earth". The rope is the "tether" (the magic part). The bucket is a suitable rock used to keep the tether tight, and a "reservoir" of angular momentum...

Carbon nanotubes can carry some current. So you might be able to run the elevator like an electric tram.

electric elevator? how much do the copper cables weigh ?

Nano tubes may be electrically conductive. But what keeps you car moving up and down the road? An engine and fuel source. Or batteries. So it could be self-contained.

Gasloine powered? how much gas and O2 weigh ?

Batteries.

How does the astronough at the top, jump off into orbit ?

The "anchor" is placed to that it is just past geosynchronous. So being at the anchor, has you moving just a little bit too fast to be in a circular orbit, so you will be at the closest point of an elliptical orbit.

how do you keep it from falling over ? Skyhook ?

Dropping the tether, and the tether itself is the magic part of this. Once up, it stays up just like your swung bucket stays outwards.

how do you keep it from wind blowing it over ?

No real effect, since it only effects 1 or 2 miles of many thousands of miles of cable. The bigger effect will be "elevators" going up (will drag the tether westwards (slowing the Earth and anchor a bit)), and going down (will drag the tether eastwards (speeding the Earth and anchor a bit).

How much cement is needed for the base ?

Minimal effect, if the system is balanced, since the anchor in space, can support the entire cable and any in-transit elevator cars. But the Earth is NOT a rigid body, so it will have to have some serious shock absorbers.

how many miles of guy wires ?

None. They'd only make more stress on the tether.

David A. Smith

In article ,
says...

In sci.physics Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

Nope, the next stop would be ANYTHING practical.

Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Finally, nanotechnology can now fulfill its potential to revolutionize
21st-century technology, from the space elevator, to private, orbital
launchers, to 'flying cars'.

The lack of flying cars has never been a materials problem. There have
been lots of flying cars built.

For one, they're super expensive. But, ignoring the expense for now...

The huge problem with flying cars in my mind is building one that's
simple for a "driver" to operate. The masses aren't going to all get a
pilot's license. Heck, most people on the road shouldn't even have a
driver's license based on how awful they drive and on how many wrecks
they cause. Imagine them all flying cars right into each other!

To make this work, you'd need self-flying cars!

Jeff
--
All opinions posted by me on Usenet News are mine, and mine alone.
These posts do not reflect the opinions of my family, friends,
employer, or any organization that I am a member of.

In sci.physics Jeff Findley wrote:
In article ,
says...

In sci.physics Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

Nope, the next stop would be ANYTHING practical.

Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Finally, nanotechnology can now fulfill its potential to revolutionize
21st-century technology, from the space elevator, to private, orbital
launchers, to 'flying cars'.

The lack of flying cars has never been a materials problem. There have
been lots of flying cars built.

For one, they're super expensive. But, ignoring the expense for now...

The huge problem with flying cars in my mind is building one that's
simple for a "driver" to operate. The masses aren't going to all get a
pilot's license. Heck, most people on the road shouldn't even have a
driver's license based on how awful they drive and on how many wrecks
they cause. Imagine them all flying cars right into each other!

To make this work, you'd need self-flying cars!

Jeff

Neither the FAA nor any other aviation authority on the planet is going
to allow non-pilots into the airspace system.

So there is the first problem, you will HAVE to be a pilot to fly a
flying car.

Fully autonomous aircraft are not going to happen any time soon.

Witness the current hoopla over drones to get a feel for the regulatory
temperment; you now have to register what amounts to model airplanes
with the FAA.

The sole reason that flying cars have never been a commercial success
is economics; you have to be a pilot, which isn't cheap, they cost
a LOT to build and certify to two sets of sometimes conflicting
regulations, and the market for such a thing is tiny.

Materials have never been an issue.


--
Jim Pennino

Dear ji...:

On Tuesday, August 23, 2016 at 9:16:09 AM UTC-7, wrote:
....
Neither the FAA nor any other aviation authority
on the planet is going to allow non-pilots into
the airspace system.

http://www.usua.org/Rules/faa103.htm
.... You can get to space on an elevator with only 5hp, just not 5 gallons of fuel (unless you use matter / antimatter)..

David A. Smith

Thanks for taking the time to read it. Right, these now are just proposals.
All of them though would be easy and low cost to test for nanotechnology
research labs. So considering the the billion dollar benefit in producing
structures a hundred times stronger than steel at 1/5th the weight, the
benefit to risk ratio is huge.
What goes into the risk calculation tough has to be consideration of the
likelihood they would work. For the simply tying the nanotubes proposal, as
I discussed in the article it has already been proven tying them together
can give lighter weight conducting wires than copper wires. And it is known
that tying ropes together can give ropes 80% to 90% the strength of the
component ropes.
For the laser irradiation proposal nanotubes were able to be combined by
illuminating the nanotube ends with a resulting strength close to the 300
Mpa(megapascals) tensile strength of the component nanotubes. It needs to be
tested though using nanotubes of the greatest measured strength at above 100
Gpa(gigapascals).

Bob Clark



----------------------------------------------------------------------------------------------------------------------------------
Finally, nanotechnology can now fulfill its potential to revolutionize
21st-century technology, from the space elevator, to private, orbital
launchers, to 'flying cars'.
This crowdfunding campaign is to prove it:

Nanotech: from air to space.
https://www.indiegogo.com/projects/n...ce/x/13319568/
----------------------------------------------------------------------------------------------------------------------------------
"Rick Jones" wrote in message ...

In sci.space.policy Robert Clark wrote:
American Journal of Nanomaterials
Vol. 4, No. 2, 2016, pp 39-43. doi: 10.12691/ajn-4-2-2 | Research Article
From Nanoscale to Macroscale: Applications of Nanotechnology to Production
of Bulk Ultra-Strong Materials.
Robert Clark
Department of Mathematics, Widener University, Chester, United States
http://pubs.sciepub.com/ajn/4/2/2/index.html

Next stop: the space elevator.

There was an awful lot of "might" and "may" in that article. Nothing
that suggested anyone has gotten a sufficiently strong construct out
to say a meter or even 10cm.

rick jones
--
firebug n, the idiot who tosses a lit cigarette out his car window
these opinions are mine, all mine; HPE might not want them anyway...
feel free to post, OR email to rick.jones2 in hpe.com but NOT BOTH...

---
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