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Crowdfunding campaign announced: Nanotech: from air to space.

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  Crowdfunding campaign announced: Nanotech: from air to space. "Robert Clark" <rgregoryclark@gmSPAMBLOACKail.com> - 2016-02-05 15:55 -0500
    Re: Crowdfunding campaign announced: Nanotech: from air to space. jimp@specsol.spam.sux.com - 2016-02-05 23:57 +0000
      Re: Crowdfunding campaign announced: Nanotech: from air to space. William Mook <mokmedical@gmail.com> - 2016-03-24 21:16 -0700
    Re: Crowdfunding campaign announced: Nanotech: from air to space. "Robert Clark" <rgregoryclark@gmSPAMBLOACKail.com> - 2016-02-18 02:11 -0500
      Re: Crowdfunding campaign announced: Nanotech: from air to space. jimp@specsol.spam.sux.com - 2016-02-18 19:36 +0000
        Re: Crowdfunding campaign announced: Nanotech: from air to space. "Robert Clark" <rgregoryclark@gmSPAMBLOACKail.com> - 2016-02-21 12:32 -0500
          Re: Crowdfunding campaign announced: Nanotech: from air to space. jimp@specsol.spam.sux.com - 2016-02-21 18:20 +0000
            Re: Crowdfunding campaign announced: Nanotech: from air to space. William Mook <mokmedical@gmail.com> - 2016-03-15 19:57 -0700

#55312 — Crowdfunding campaign announced: Nanotech: from air to space.

Nanotech now has the capability to make the space elevator and private 
orbital launchers possible.
It now also makes possible the long desired 'flying cars'.
The purpose of this crowdfunding campaign is to prove it.

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

For technical background see:

From nanoscale to macroscale: applications of nanotechnology to production 
of bulk ultra-strong materials.
http://exoscientist.blogspot.com/2016/02/from-nanoscale-to-macroscale.html

  Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Nanotechnology now can produce the space elevator and private, orbital 
launchers. It now also makes possible the long desired 'flying cars'.
This crowdfunding campaign is to prove it:

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

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#55313

In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> Nanotech now has the capability to make the space elevator and private 
> orbital launchers possible.
> It now also makes possible the long desired 'flying cars'.
> The purpose of this crowdfunding campaign is to prove it.
> 
> Nanotech: from air to space.
> https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568
> 
> For technical background see:
> 
> From nanoscale to macroscale: applications of nanotechnology to production 
> of bulk ultra-strong materials.
> http://exoscientist.blogspot.com/2016/02/from-nanoscale-to-macroscale.html
> 
>  Bob Clark
> 
> ----------------------------------------------------------------------------------------------------------------------------------
> Nanotechnology now can produce the space elevator and private, orbital 
> launchers. It now also makes possible the long desired 'flying cars'.
> This crowdfunding campaign is to prove it:

Flying cars have been around since well before WWII but the lack of
wide spread adoption has nothing to do with materials and everything
to do with economics and regulatory approvals.



-- 
Jim Pennino

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#55631

On Saturday, February 6, 2016 at 1:01:03 PM UTC+13, ji...@specsol.spam.sux.com wrote:
> In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> > Nanotech now has the capability to make the space elevator and private 
> > orbital launchers possible.
> > It now also makes possible the long desired 'flying cars'.
> > The purpose of this crowdfunding campaign is to prove it.
> > 
> > Nanotech: from air to space.
> > https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568
> > 
> > For technical background see:
> > 
> > From nanoscale to macroscale: applications of nanotechnology to production 
> > of bulk ultra-strong materials.
> > http://exoscientist.blogspot.com/2016/02/from-nanoscale-to-macroscale.html
> > 
> >  Bob Clark
> > 
> > ----------------------------------------------------------------------------------------------------------------------------------
> > Nanotechnology now can produce the space elevator and private, orbital 
> > launchers. It now also makes possible the long desired 'flying cars'.
> > This crowdfunding campaign is to prove it:
> 
> Flying cars have been around since well before WWII but the lack of
> wide spread adoption has nothing to do with materials and everything
> to do with economics and regulatory approvals.
> 
> 
> 
> -- 
> Jim Pennino

http://inhabitat.com/mit-developing-ionic-wind-thrusters-as-efficient-alternative-to-jet-engines/
http://web.mit.edu/16.unified/www/SPRING/systems/Lab_Notes/airpower.pdf
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100000021.pdf

This seven year old article details that 110 Newtons of lift is produced per kilowatt of power.  Since 

  F = mdot * Ve

and

 W = 1/2 * mdot * Ve^2

then

   2 * P = F * Ve

therefore

   2 * P / F = Ve
  2 * 1000 / 110 = 18.2 m/sec 

A cubic meter of air at sea level masses 1.225 kg.  So, air moving at a speed of 18.2 m/sec represents a mass flow of 22.3 kg/sec/m2 so 405.86 N/m2 of lift may be produced (41.4 kgf/m2) at a specific power of 3,694 Watts/m2.  A 30 kW hydrogen fuel cell, massing 15 kg, powered by 11.9 kg of hydrogen for 15 hours, stored in a tank that masses another 5 kg.  

http://www.hydrogenics.com/hydrogen-products-solutions/fuel-cell-power-systems

The fuel cell energises the rim of a 3.1 meter diameter oblate sphere that's 655 mm thick at its center and is capped by a 1,400 mm diameter transparent hemisphere at its center, produces 311 kgf lift by accelerating air on its upper surface downward.      

Thrust is produced efficiently up to 40 kph, and begins to fall off to zero at 65 kph.  At this speed, exhaust speeds are increased, lowering specific thrust per unit power, but gaining lift from the aerodynamic properties of the disk.  Disc's have a 6:1 lift to drag ratio and so provide efficient transport up to 600 kph using this mode of thrust.  

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#55397

Carbon nanotube based electrohydrodynamic (EHD) propulsion - a route to 
flying cars:

Carbon nanotubes for "ionic wind" craft or "ionocraft".
http://exoscientist.blogspot.com/2016/02/carbon-nanotubes-for-ionic-wind-craft.html

  Bob Clark


----------------------------------------------------------------------------------------------------------------------------------
Nanotechnology now can produce the space elevator and private, orbital 
launchers. It now also makes possible the long desired 'flying cars'.
This crowdfunding campaign is to prove it:

Nanotech: from air to space.
https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568/
----------------------------------------------------------------------------------------------------------------------------------
"Robert Clark"  wrote in message news:n9323i$fi8$2@dont-email.me...

Nanotech now has the capability to make the space elevator and private
orbital launchers possible.
It now also makes possible the long desired 'flying cars'.
The purpose of this crowdfunding campaign is to prove it.

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

For technical background see:

From nanoscale to macroscale: applications of nanotechnology to production
of bulk ultra-strong materials.
http://exoscientist.blogspot.com/2016/02/from-nanoscale-to-macroscale.html

  Bob Clark

----------------------------------------------------------------------------------------------------------------------------------
Nanotechnology now can produce the space elevator and private, orbital
launchers. It now also makes possible the long desired 'flying cars'.
This crowdfunding campaign is to prove it:

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


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus 

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#55406

In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> Carbon nanotube based electrohydrodynamic (EHD) propulsion - a route to 
> flying cars:
> 
> Carbon nanotubes for "ionic wind" craft or "ionocraft".
> http://exoscientist.blogspot.com/2016/02/carbon-nanotubes-for-ionic-wind-craft.html
> 
>  Bob Clark
> 
> 
> ----------------------------------------------------------------------------------------------------------------------------------
> Nanotechnology now can produce the space elevator and private, orbital 
> launchers. It now also makes possible the long desired 'flying cars'.
> This crowdfunding campaign is to prove it:
> 
> Nanotech: from air to space.
> https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568/
> ----------------------------------------------------------------------------------------------------------------------------------
> "Robert Clark"  wrote in message news:n9323i$fi8$2@dont-email.me...
> 
> Nanotech now has the capability to make the space elevator and private
> orbital launchers possible.
> It now also makes possible the long desired 'flying cars'.
> The purpose of this crowdfunding campaign is to prove it.
> 
> Nanotech: from air to space.
> https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568
> 
> For technical background see:
> 
> From nanoscale to macroscale: applications of nanotechnology to production
> of bulk ultra-strong materials.
> http://exoscientist.blogspot.com/2016/02/from-nanoscale-to-macroscale.html
> 
>  Bob Clark
> 
> ----------------------------------------------------------------------------------------------------------------------------------
> Nanotechnology now can produce the space elevator and private, orbital
> launchers. It now also makes possible the long desired 'flying cars'.
> This crowdfunding campaign is to prove it:
> 
> Nanotech: from air to space.
> https://www.indiegogo.com/projects/nanotech-from-air-to-space/x/13319568#/
> ----------------------------------------------------------------------------------------------------------------------------------

Repeating nonsense does not make it true.


-- 
Jim Pennino

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#55448

As a physics guy, you might like this. Sharp points are known to more easily 
create corona discharge and also more intense ones:

Corona discharge.
[Quote]
When the potential gradient (electric field) is large enough at a point in 
the fluid, the fluid at that point ionizes and it becomes conductive. If a 
charged object has a sharp point, the electric field strength around that 
point will be much higher than elsewhere. Air near the electrode can become 
ionized (partially conductive), while regions more distant do not. When the 
air near the point becomes conductive, it has the effect of increasing the 
apparent size of the conductor. Since the new conductive region is less 
sharp, the ionization may not extend past this local region. Outside this 
region of ionization and conductivity, the charged particles slowly find 
their way to an oppositely charged object.
https://en.wikipedia.org/wiki/Corona_discharge

The same is also true for very thin wires, a fact well-known to electrical 
engineers by Peek's Law, https://en.wikipedia.org/wiki/Peek%27s_law . So for 
ultra thin wires such as nanotubes would the same thing be true? A key fact 
is it has already been confirmed for nanotubes in regards to sharp points:

Why are carbon nanotubes such excellent field emitters?
by Jean-Marc Bonard, Jean-Paul Salvetat, Thomas Stöckli, László Forró, André 
Châtelain
http://www.foresight.org/Conference/MNT6/Papers/Chatelain/

This *strongly* implies this will also be true in regards to ultra thin 
wires such as the nanotubes. But that's it, that's the game changer. Once 
you have that, you get the conclusion the force produced using nanowires, 
i.e., wires at the nanoscale, would be enough to lift the raise the lifters 
and their power supplies. For the equation showing the thrust for the 
lifters is simply:

F = i*d/k,

i the current, d the distance between the emitter and collector, and k a 
constant for air known as ion mobility, k=2*10^-4 m^2/(volt*sec) at STP, 
with all variables in MKS units.

Therefore the thrust to electrical power ratio is F/P = F/(i*V) = d/(k*V). 
See for example this published paper:

On the performance of electrohydrodynamic propulsion.
Kento Masuyama, Steven R. H. Barrett
Proceedings of the Royal Society A
Mathematical, Physical, and Engineering Sciences
Published 3 April 2013.DOI: 10.1098/rspa.2012.0623
http://rspa.royalsocietypublishing.org/content/469/2154/20120623 [full text]

So you see if you can get V small, you can get high thrust to power ratio. 
But you can't just arbitrarily set V small. V has to be of a size to 
initiate corona discharge, i.e., ionization, around the wire. Then that's 
the key point: with wires at the nanoscale Peek's law suggests, and 
experiments with nanotube sharp point emitters implies, that you can get 
ionization at just a few hundred volts, a hundred times smaller than with 
the voltages used now, which thus would correspond to thrust/power ratio's a 
hundred times higher than those attained now.

Note also you don't need nanotubes to confirm this. It can be confirmed by 
using any nanowires, such as used in microelectronics for example.

  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/nanotech-from-air-to-space/x/13319568/
----------------------------------------------------------------------------------------------------------------------------------
wrote in message news:b2jhpc-hpq.ln1@mail.specsol.com...

In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> Carbon nanotube based electrohydrodynamic (EHD) propulsion - a route to
> flying cars:
>
> Carbon nanotubes for "ionic wind" craft or "ionocraft".
> http://exoscientist.blogspot.com/2016/02/carbon-nanotubes-for-ionic-wind-craft.html
>
>  Bob Clark
>


Repeating nonsense does not make it true.

-- 
Jim Pennino
---

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#55449

In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> As a physics guy, you might like this. Sharp points are known to more easily 
> create corona discharge and also more intense ones:

<snip>

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

A 75 kW aircraft engine is a tiny engine.

The power has to come from somewhere.


-- 
Jim Pennino

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#55596

On Monday, February 22, 2016 at 7:31:05 AM UTC+13, ji...@specsol.spam.sux.com wrote:
> In sci.physics Robert Clark <rgregoryclark@gmspambloackail.com> wrote:
> > As a physics guy, you might like this. Sharp points are known to more easily 
> > create corona discharge and also more intense ones:
> 
> <snip>
> 
> > Finally, nanotechnology can now fulfill its potential to revolutionize 
> > 21st-century technology, from the space elevator, to private, orbital 
> > launchers, to 'flying cars'.
> 
> A 75 kW aircraft engine is a tiny engine.
> 
> The power has to come from somewhere.
> 
> 
> -- 
> Jim Pennino

The EHANG-184 requires 106 kW and carries enough batteries for 23 minutes of flight.

http://www.gizmag.com/ehang-184-aav-passenger-drone/41213/

Its got a 14.4-kWh battery pack takes four hours in trickle mode or two hours in fast-charge

The whole thing weighs 440 lb (200 kg), can carry up to 264 lb (120 kg), has a maximum speed of 62 mph (100 km/h) and can reach a maximum altitude of 11,480 ft (3,499 m).

Great for moving around a big city quickly!  

Beaming power to the EHANG-184 gives it further range.

http://lasermotive.com/markets/uav-power-links/

http://lasermotive.com/2012/07/11/successful-48-hour-laser-powered-uas-demonstration/

Lasermotive already is marketing a laser power link for drones that is capable of supporting multiple drones simultaneously.  The laser can also be modulated to send and receive information from the drone.

This could easily be adapted to the EHANG 184 airframe - tied to its base, with no increase in weight - by reducing battery weight to compensate - to about 18 minutes from 23 minutes.

Now, while the drone powered by Lasermotive is only 0.96 kW, LaWs, a laser weapons system developed by DEWO projects 100 kW accurately to the horizon and can track subsonic targets efficiently to that distance;

http://breakingdefense.com/2014/05/laser-weapons-lower-expectations-higher-threats/

This uses off-the-shelf available technology.   

A single laser power system sitting atop the Grace Buiding in mid-town Manhattan, could power a EHANG-184s flying above Manhattan, recharging them in flight as neeed while powering them.  A laser beam could cover all of Manhattan up to Yonkers, out to East Orange, Cranford, Staten Island, JFK,  Brooklyn, Queens, College Point, Bronx, Yonkers, Paramus, Clifton...  When out of sight of the laser, each flyer switches seamlessly to internal power, which is handy when landing anywhere.  I then picks up power again when above the buildings.

This could serve over 26 million people.  With 40 flight systems and 40 lasers painting the skies, from high atop the Gracie Building, at point to point at 62 mph - you can move 400 people per hour anywhere in this region.   To go from Midtown to Yonkers, or JFK, costs $60 to $90 and it takes one hour or more depending on traffic.  The EHANG-184 takes less than 3 minutes, and could charge as much as $180 to $270 depending on time of day.   You'd use the UBER system, with a minimum $180 charge, and the bidding software would bid it up.  Traders on Wall Street would be given an option to prepurchase slots which they would have 10 minutes to trade - so there could be a very active options market - which would reduce costs for lucky users.

Bottom line, in NYC, at 400 flights per hour and $250 per flight, this is $100,000 per hour.  $876,600,000 per year.  A revenue stream worth $8 billion at reasonable discount rates and maintenance levels.  A value of $200 million per EHANG-184 & Laser in this environment.  Putting $1 million into each drone, $10 per watt for the high efficiency solid state laser, which is another $1 million leaves $198 million for optics and other hardware, and profit.  A $5 million investment per vehicle would likely produce $50 million return in less than 18 months, with another $45 million on the table, split between vendors and investors to motivate efficient operation.  

There are 51,398 people licensed to drive medallion taxicabs in NYC.  13,605 taxicab medallion licenses are in existence.    368 of them were auctioned in 2013 according to most recent records.  There are 40,000 other for hire vehicles in NYC.  Taxies drive 180 miles per shift, and serve 241 million passengers per year.  Dividing 13,605 vehicles into 241 million and by the number of days in a year, each vehicle carries 48 passengers in a 24 hour period.   Each EHANG will likely carry 240 passengers in a 24 hour period.  

40 EHANG licensed as modified Medallion vehicles represent 10% of the medallions on-offer.  Each is overseen, by a driver via direct microwave/laser connection for a four hour period.  They require special training and testing.  They are paid for 6 hours and there is also a split in the revenue.  Each EHANG has 8 drivers assigned, providing 24 hour coverage 7 days a week, and emergency back up.   They are not in the vehicle, but there via virtual real time link.  Despite higher compensation, the automated nature of the flight system provides 10 passegers per hour relative to 2 passengers per hour typical, lowering costs despite higher manpower for vehicle.  So, 320 drivers are employed for the 40 vehicles.   This should satisfy unions.  This will take up 1.45% of the taxi traffic in NYC.

Buying up 40% of the available Medallions per year, employs  1280 drivers per year and takes 5.8% of the market per year.   In ten years 58% of the present NYC traffic will be by air, and involve only 800 vehicles.

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