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  #1  
Old 04-22-2017, 11:48 PM
Allen Burgess Allen Burgess is online now
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Gadgetmall Coanda OU UFO.

Mounting the "Squirl Cage Fan" flat on the top of the Coanda hull with rotor magnets attached, could blast a swirling vortex of clinging air around the coanda form surface and would create vertical lift. The fan intake would suck air in from the top and assist in helping supply lift.

Building the remainder of Gadetmall's motor and circuit into the body of the Coanda hull would result in a perpetually airbourne drone.

Gadgetmall's motor is discussed in my "BEMF current reversal" thread below:
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File Type: jpg Coanda drone.jpg (45.4 KB, 53 views)
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Old 04-23-2017, 01:05 AM
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Thanks Allen

This is what I was looking for and so maybe I will catch on now.
Keep posting any additional related video's when you have spare
time. No hurry.
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Old 04-23-2017, 01:26 AM
Allen Burgess Allen Burgess is online now
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Coanda lift

@BroMikey,

This one plugs in:

https://www.youtube.com/watch?v=WPUAq3QObp4

Here's one that flys from JLN with a propeller:

https://www.youtube.com/watch?v=sdGVI7kJld0
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Last edited by Allen Burgess; 04-23-2017 at 01:39 AM.
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Old 04-23-2017, 11:26 AM
Allen Burgess Allen Burgess is online now
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Centrifugal fan

Here's a GIF of a "Centrifugal Fan":
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File Type: gif 275px-Centrifugal_fan.gif (162.5 KB, 16 views)
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Old 04-23-2017, 12:52 PM
Allen Burgess Allen Burgess is online now
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Vortx nozzle.

The centrifugal fan delivers a "Flat Blast" of air. Vortxing through a "Vortex Nozzle" adds multiple force to it: An ordinary propeller does this job nicely, but needs very high R.P.M The centrifugal fan has 32 blades, and can deliver a greater volume of air at a much lower R.P.M.
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File Type: png vortex nozzle.png (522.0 KB, 26 views)
File Type: jpg industrial-vortex-nozzle-non-clogging-spiral-nozzles.jpg (56.9 KB, 22 views)
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Old 04-23-2017, 01:10 PM
Allen Burgess Allen Burgess is online now
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Coanda effect

"The Coandă effect is the tendency of a fluid jet to stay attached to a convex surface".

This video shows a non-vortex centrifugal air blast over a "Coanda Hull":

https://www.youtube.com/watch?v=aF92B6Gon3M


Below is a rough sketch of a vortex nozzle for the "Centrifugal Fan":
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File Type: jpg Vtxnz.jpg (27.1 KB, 16 views)
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Old 04-23-2017, 01:34 PM
Allen Burgess Allen Burgess is online now
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Quatro Power Coils.

The centrifugal fan would sit on top of the Coanda Hull with the suction intake facing upward. An axle would couple the magnet rotor to the bottem of the inside fan. We want power not R.P.M. Let's add three more pulse power coils for a total of four. Remember, these power coils with their piggyback output secondarys, generate more power then they consume! Adding three additional coils will help. We don't need to increase the number of capacitors. This unit will generate more power than it uses, but we need power to operate the controls! The centrifugal fan will deliver a larger volume of air over the Coanda Hull than a propeller with sufficient power.

Below is a view of the magnet rotor and 4 "Piggyback" power coils from underneath:
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File Type: jpg Power coils.jpg (35.8 KB, 13 views)
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Old 04-23-2017, 02:37 PM
Allen Burgess Allen Burgess is online now
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Reed Switch.

We can eliminate the trigger coils and run the circuit with a Reed Switch. The Bedini circuit makes no sense because the "Flyback" never leaves the coil windings through the wire anyway. This will reduce the weight considerably. Higher permeability cores will weigh less and allow us to increase the R.P.M. as well.
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Old 04-23-2017, 02:50 PM
Allen Burgess Allen Burgess is online now
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Plastic Centrifugal Fan

This plastic fan, coupled with the other weight reduction measures, cuts the load down significantly:
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Old 04-23-2017, 03:29 PM
Allen Burgess Allen Burgess is online now
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Reverse rotation gear

A "Reverse Rotation Gear" between the magnet rotor and the fan cage would provide rock solid inertial stability and cancel precession out entirely. A major problem with the propeller driven version:


https://www.youtube.com/watch?v=x8dRHC4XlbI
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Old 04-23-2017, 06:42 PM
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Plastic bevel gears

These plastic bevel gears come in a set from "amazon" along with drive shafts. The sets cost $10. The direction changing gear is nearly 100% efficient and very easy to assemble.

The weight of the cage shaped centrifugal fan needs to balance perfectly with the weight of the magnet rotor. This is the major parameter all else needs to be gauged by: Diameter of the Coanda Hull, size of the power coils etc.

The counter rotating fan cage and magnet rotor will give this aircraft tremendous gyroscopic stability along with zero precession. It will sit rock solid in a wind.
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File Type: jpg Plastic bevel gears.jpg (209.1 KB, 9 views)
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Old 04-23-2017, 07:02 PM
Allen Burgess Allen Burgess is online now
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Paper mache Coanda Hull

Here's a quick and dirty way to build a Coanda Hull; Ingredients include "Elmers Glue and Water":

https://www.youtube.com/watch?v=Zbx6tTlb5zg


Pay close attention starting at :50 seconds in the video: The handler tucks the top of the balloon down through the inside and ties it on the other side with a thread. This produces a perfect Coanda form! Naturally, the hardened paper mache needs to be cut across the center to make two halves. Theses can be glued together to double the strength.

The "Vortex Nozzle" for the plastic centrifugal fan can be molded from paper mache as well.
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Old 04-23-2017, 08:08 PM
Allen Burgess Allen Burgess is online now
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Final Design.

A cross brace can be glued in place to hold the base of the rotor axle, and needs a tiny bearing. The four coils can mount under the cross braces. That's it!

The circular floor can be pizza box cardboard to hold the two capacitors, also glued in place.

The circuit includes the 8 single wire coils, 4 power, 4 piggy back. 4 high perm ferrite cores, and two capacitors. The electrical components are: 1 Reed switch, 1 diode and a FWBR.

We can fly this from a kite string at first, see how long it will stay aloft!
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Old 04-23-2017, 10:34 PM
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Hello Allen

I have not had time to complete my study on this subject so let
me ask you which video or PDF shows that this effect can give
me say more lift and an object than input energy.

I think the airforce is using this also but I am looking for a good
set of measurements as proof of the concept. I am sure it is there.

Got to run off to work, BRB

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Old 04-23-2017, 11:08 PM
Allen Burgess Allen Burgess is online now
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Overunity

@BroMikey,

I really have no way to determine how efficient this set up will prove to be. The design eliminates the battery, the heaviest portion of the package. At the very least the "loop Circuit" should prolong run time significantly.

It would help to lay the capacitors on their side, centered one over the other to balance the weight.

I succeeded in flying a Coanda craft with a vortex helmet I fashioned from a PVC end cap. I drilled in from the side, and glued a compressed air nipple in, and forced swirling air over the Coanda hull through a 1/4" space between the lower lip of the helmet and the skin of the hull. The form shot up like a skyrocket. The compressed air runs out fast; Maybe this version will stay aloft longer.
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Old 04-24-2017, 11:06 AM
Allen Burgess Allen Burgess is online now
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Magnet wave.

JLN tests an output coil on a ferrite core, and calibrates the distance in centimeters from the magnet rotor for peak efficiency: Here's a video of his test:

https://www.youtube.com/watch?v=YUoyuiQTrRA

"Normal Lenz effect can be reversed"

At 30 centimeters distance along the ferrite core from the rotor, the output coil seats over the peak of the "Magnet Wave".

This distance in very small increments of centimeters, makes all the difference in the output! Same goes for "Gadgetmalls "Piggyback" output coil.

The GIF on the right shows the flux traveling through the core: At the sweet spot "Lenz drag" turns into "Lenz propulsion"'
Attached Images
File Type: jpg dletbv1b.jpg (79.9 KB, 9 views)
File Type: gif DLETB1anim.gif (1.28 MB, 15 views)
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Old 04-24-2017, 01:12 PM
Allen Burgess Allen Burgess is online now
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Piggyback kickback.

The "Piggyback Output Coil" generates a current from the magnetic core; Consequently, this new current in the output coil generates it's own magnetic field. This field travels back into the ferrite core. Properly positioned on the ferrite core, the "Piggyback Output Coil" sends a magnet wave back through the core which couples simultaneously with the power coil pulse, accelerating the magnet rotor and reducing input.

The correctly positioned "Piigyback Output Coil" not only collects and redirects the power pulse "Flyback" toward return to source; It sends a reflected magnet wave back through the ferrite core that helps power the rotor and reduce input. So there's a "Twofold" advantage.


JLN demonstrates "Lenz Reversal" with his output coil separated from his power coil. JLN's separated coils do nothing to conserve and loop the power coil BEMF, as "Gadgetmall's coupled coils do.
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  #18  
Old 04-27-2017, 12:50 PM
Allen Burgess Allen Burgess is online now
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"Lenz Reversal"

Quote from JLN's video posted above:

"Here an interesting experiment about the Delayed Lenz Effect which shows that the normal Lenz effect can be reversed"

JLN starts off with his stator coil 1 mm from the magnet rotor. He shorts the coil and the rotor slows down and the input rises. (Normal Lenz Drag effect)

JLN then moves the stator coil back on the core to a distance of 30 mm from the magnet rotor and shorts the coil a second time. The rotor speeds up and the input drops. (Lenz reversal effect)

Fusionchip's "Piggyback stator Coil" is free to move along his ferrite core just like JLN's. The position of Fusionchip's piggyback coil can generate "Lenz Reversal" just like JLN's output coil at the "Wave Reflection Distance"!

The major difference between these two setups is that Fusionchip's power coil shares the ferrite core with the power coil and is not separated from it like JLN's. This gives Fusionchip's "Piggyback Output" coil the additional advantage of generating power from "Flyback" pulse recovery. This twofold advantage apparently resulted in a demonstrated overunity loop. This "Lenz Reversal" effect was poorly understood at the time of Fusionchip's video.
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Old 04-29-2017, 01:26 PM
Allen Burgess Allen Burgess is online now
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Wave reflection zone.

The distance between the piggyback coil and the beginning of the ferrite core needs to be exactly on the magnet wave peak to achieve "Lenz Reversal" along with BEMF recovery. The "Piggyback Output Coil" generates A.C. current and needs a full wave bridge rectifier to loop to the D.C. source. This combination of "Lenz Reversal" and and "Flyback Recovery" add up to Overunity. A simple Reed switch would run this hybrid ferrite core coil combination just fine. The rotor magnet polarity needs to be N S in order for this effect to work.
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File Type: jpg Wave reflection (2).jpg (42.0 KB, 9 views)
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Old 04-29-2017, 06:01 PM
Allen Burgess Allen Burgess is online now
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Barkhausen effect

The magnet wave in the soft iron core is compared to a sloshing tank of water by JLN on the left; On the right is a graph showing the wave peak in conjunction with rotor magnet TDC for "Lenz Reversal":
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File Type: jpg dlebarkwaves.jpg (177.2 KB, 8 views)
File Type: jpg seccoil30mm.jpg (106.4 KB, 9 views)
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Old 04-29-2017, 09:51 PM
Allen Burgess Allen Burgess is online now
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"N-S Brushless Motor Circuit".

Gadgetmall's running a monopole Bedini SSG with all magnets pointing North out. JLN's tests are with a dipole or N-S magnet rotor. Let's take a look at this 4 coil brushless N-S magnet motor circuit with one Hall effect sensor and two NPN transistors:

John Bedini designed this kind of circuit with Cole, but it has his "Flyback Catcher" circuitry and the additional battery. We don't need a special flyback recovery circuit because the "Piggyback Coil and Ferrite Corel" does that for free through induction. This brushless motor circuit is very simple by comparison:

1 diode, 2 pairs of matching resistors a matching pair of NPN transistors, 1 Hall effect sensor and 1 tiny capacitor!
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File Type: jpg Imhoptep Bedini.jpg (85.1 KB, 9 views)
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Old 04-29-2017, 10:17 PM
Allen Burgess Allen Burgess is online now
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"Bedini's Sequential Circuit".

Just for quick contrast we can see how complex John's "Sequential bipolar switch-commutator" circuit is with 7 transistors, PNP and NPN for only 1 coil:
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File Type: jpg full%20Cole%20schem.jpg (30.8 KB, 5 views)
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Old 04-29-2017, 10:45 PM
Allen Burgess Allen Burgess is online now
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Ferrite Core

JLN speaks of his ferrite core:

"I have used a soft iron core (120 mm length, 8 mm diameter)".

That's 4 3/4" long! We will probably need at least 7" in length to accommodate the power coil, and still have the additional core length to get the proper wave reflection distance.

The 14 inches and a 6" rotor would give the Coanda Craft just under a 2 foot diameter at the base. Very nice size. We can place the 4 coils on the floor along with the rotor and simply extend the length of the drive shaft up to the fan cage overhead.

Hooking these kinds of coils and brushless fan circuit up to an alternator would allow you to run your house for free also.
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Old 04-30-2017, 09:49 AM
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Hall effect sensor.

Here is a definition of the sensor operation:

"The Hall effect provides information regarding the type of magnetic pole and magnitude of the magnetic field. For example, a south pole would cause the device to produce a voltage output while a north pole would have no effect. Generally, Hall Effect sensors and switches are designed to be in the “OFF”, (open circuit condition) when there is no magnetic field present. They only turn “ON”, (closed circuit condition) when subjected to a magnetic field of sufficient strength and polarity".


Below are a schematic of JLN's circuit and his Hall Effect Sensor:

This "Hall Effect Sensor" triggers on the south pole while the north pole has no effect! It appears that JLN's power pulse is hitting the North pole of the magnet , and that the "Reflected Magnet Wave" is hitting the South pole.
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Old 04-30-2017, 10:25 AM
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Brushless Hall Effect Sensor.

It appears that the brushless Hall effect Sensor triggers on one pole of the magnet just like JLN's, but it's "Latching" so it stays on until it's turned off by the opposite pole.

Here's a good video demonstrating the difference between a "Hall Effect Switch" and a "Hall Effect Latch" and the third type:

https://www.youtube.com/watch?v=9BFdGtvo9JE


JLN is using a "Linear Differential" Hall effect sensor, the third type in the video, which is very sensitive.
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Old 04-30-2017, 01:15 PM
Allen Burgess Allen Burgess is online now
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Hall Effect Sensors.

I think it may help to replace the "6851 Hall Effect Sensor" used in the brushless motor circuit, with the " UGN 350 3U Linear Differential" type JLN used for his tests. This would mean we would have to switch the two transistors from NPN to PNP types.
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Old 04-30-2017, 11:13 PM
Allen Burgess Allen Burgess is online now
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JLN's circuit

The soundest approach to test this Overunity power recovery coil, is to simply use JLN's basic circuit to start. The four components are listed in the schematic:
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Old 05-01-2017, 06:19 AM
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Can I just jump in to the middle of this because I'm reading your posts and it isn't clear to me that what you're proposing is aerodynamically sound. I realize you may already be aware of these things. The Coanda Effect is simply the nature of air or a fluid to follow a curved surface. It doesn't mean it will follow it around a bowl in a spiral curve. If the fan only blows on one portion of the saucer it will only follow that one area down and off the saucer generating a force in that direction.

The Coanada Saucer is an idea which is typically less efficient than a pure ducted fan, an certainly less efficient than a helicopter. However, it has qualities which neither of the other two do and which make it attractive. The attraction to the Coanda Saucer is primarily safety combined with vertical capability. Hopefully this all makes a little sense. Not sure, but hope it does. Now this doesn't mean a Coanda cannot be an efficient lifting machine, it's just that as of recent it has never been developed sufficiently to make one that is. Far be it from me to disuade you from what you're doing and I just want to make sure you understand what is going on aerodynamically.

A well designed ducted fan features a lip along the leading edge, and which is an airfoil, and which wraps around the upper edge of the duct. Thus the air moving through the duct is moving air over an airfoil, and which is itself like the leading edge of wing bent in to a circle. The air is then moving over a leading edge of circular wing as it enters the duct, and which produces a lift whose vector force is upwards.

An example of a well designed ducted fan is the Hiller Flying Platform. This machine happens to also be the most stable flying machine every invented. In fact it's so stable that it is hard to make fly in a straight line because it keeps trying to right itself.

So a well designed Coanda Saucer is itself a wing which has a mechanically driven air stream blown over it. It doesn't circulate around it. The air moves across and down with the curvature of the saucer, and that curve represents a cross section of an airfoil.

Thus the speed of the airstream which follows the shape of the saucer is important in determining factors in the saucers hull shape.

In a way a Coanda Saucer is the reverse of a helicopter rotor. A helicopter rotor is a big slow rotating wing, and again it's driven forward by a mechanical motor. The wing moves in to the relative wind by force of mechanical transmission. Whereas, in the case of the Coanda, there is a small propeller instead of a big rotating wing, and to replace that big relatively slow but dangerous rotating wing most Coanada Saucers have used a ducted fan to blow air down and over the saucer shape which is then a wing which doesn't move at all. This is much safer than any helicopter whose main rotorblades are typically countered with an anti-torque high speed tail rotor that is legendary for beheading people. So a Coanada Saucer is vastly safer in tight places and where there may be people or other creatures that may wander into the blades. Whereas, the Coanda uses a ducted fan propeller safely tucked way overhead, and which forces a mechanically driven stream of air across a wing which doesn't move at all.




See this material.

http://www.coanda.co.uk/Assets/Coand...for%20UAVs.pdf

Coanda disk aircraft research site.


Now see this material because maybe...maybe...it is possible to make a Coanda Saucer which uses the system you're working on because a glow discharge plasma control system does invite the idea of guiding the airstream precisely where and how you want it to go. This one atmosphere system isn't very complex either.

One Atmosphere Glow Discharge Plasma Control Surfaces
Towards the UAV N-XX, an EHD Coanda flying saucer by Jean-Louis Naudin

Jean-Louis Naudin is probably the first person to make an actual Coanda Saucer in probably the last 40 years. For that he deserves a great deal of credit for the interest it generated, but what he wants and what we all want is more than this ducted fan machine has delivered so far. It's a good machine which can be improved on.

The coanda saucer here built by Jean-Louis Naudin. Dr Stephen Prior at Middlesex University independently tested these and found that there is no additional lift which resulted from the shape of the body. In fact the lift provided by the propeller alone was greater without the body.
https://www.cfd-online.com/Forums/ma...duce-lift.html



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Old 05-01-2017, 07:16 AM
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Quote:
Originally Posted by Allen Burgess View Post
"The Coandă effect is the tendency of a fluid jet to stay attached to a convex surface".

This video shows a non-vortex centrifugal air blast over a "Coanda Hull":

https://www.youtube.com/watch?v=aF92B6Gon3M

:


This explanation in this Youtube video is not accurate at all. Not even remotely close. This isn't why air flows down over the bowl. Neither is the Coanda Effect a phenomena as some like to say officially, mainly on google searches, though once upon a time it was considered a phenomena.

Today we know that a boundry layer of particles adhears a jet of air to a convex surface and which is defined as a the Coanda Effect when that flow of air follows the curvature of a surface away from the direction of the originating airflow. This is to say then that a jet of air will follow a convex surface.
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Old 05-01-2017, 01:28 PM
Allen Burgess Allen Burgess is online now
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Ducted Fan

@Gambeir,


Firstly, I want to thank you for all the updated links. I wasn't aware of JLN's Plasma control advance.

I'm trying to design a toy from the dollar store, based on a paper mache hull formed over a blow up balloon.

The ducted fan looks great compared to the centrifugal fan. I wonder how come no one's ever actually built one?

This ducted fan looks great, but all we need are two thousand Japanese engineers, not a ten dollar swap off ebay!

The outer Hull of my "Coanda Craft" has to be free to spin. I discovered this effect while experimenting with a compressed air vortex helmut made from a PVC end cap. You pointed out that the funneled vortex from the centrifugal fan would not spiral down around the Hull. You're correct. I didn't go into this effect tat any great length, but I can assure you that it worked fantastic.

This is an entirely new undemonstrated effect that I stumbled upon accidently through bench test experimentation. The "Spinning Hull" itself acts as a giant propeller. Only the skin needs to spin! This is why the "Spin Hull Coanda Craft" needs an internal counter rotating mass.
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