A working model of a electromagnetic mass accelerator of high power
V2006, Fri Sept 29 2017, 12:02AMIn the video the operation of the prototype of a electromagnetic mass accelerator (mobile test stand).
Demonstration of a working model of electromagnetic mass accelerator - a mobile test stand (side view).
Re: A working model of a electromagnetic mass accelerator of high power
kerver, Wed Nov 08 2017, 08:04PM
Wauw man.
Pleasu tell us about your working en the electronics setup of your high power super gun?
Thanks you.
With love, from Amsterdam, The Netherlands. Greets to you all...
kerver, Wed Nov 08 2017, 08:04PM
Wauw man.
Pleasu tell us about your working en the electronics setup of your high power super gun?
Thanks you.
With love, from Amsterdam, The Netherlands. Greets to you all...
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Nov 08 2017, 09:26PM
Dear colleagues!
The diameter of the accelerated object is 21-22 mm; weight of the accelerated object from 370 to 480 g; stored energy 10300 J: 5 pcs 450 V x 8200 mkF (EPCOS) + 2 pcs 450 V x 10,000 mkF (HITANO) + 3 pcs 450 V x 1500 mkF + 54 pcs 450 V x 680 mkF + special design
V2006, Wed Nov 08 2017, 09:26PM
Dear colleagues!
The diameter of the accelerated object is 21-22 mm; weight of the accelerated object from 370 to 480 g; stored energy 10300 J: 5 pcs 450 V x 8200 mkF (EPCOS) + 2 pcs 450 V x 10,000 mkF (HITANO) + 3 pcs 450 V x 1500 mkF + 54 pcs 450 V x 680 mkF + special design
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Fri Jun 15 2018, 07:24PM
The effect of an electromagnetic mass accelerator on a complex target
The effect of an electromagnetic mass accelerator on a complex target
- side view
Now also available playlist
V2006, Fri Jun 15 2018, 07:24PM
The effect of an electromagnetic mass accelerator on a complex target
The effect of an electromagnetic mass accelerator on a complex target
- side view
Now also available playlist
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Thu Jul 12 2018, 09:19PM
The current model of heavy-duty electromagnetic mass accelerator (working model of the coilgun) - increase in efficiency:
V2006, Thu Jul 12 2018, 09:19PM
The current model of heavy-duty electromagnetic mass accelerator (working model of the coilgun) - increase in efficiency:
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Thu Nov 01 2018, 09:08PM
New!
V2006, Thu Nov 01 2018, 09:08PM
New!
Re: A working model of a electromagnetic mass accelerator of high power
Zuckerstange47, Sat Nov 03 2018, 12:07AM
Your links don't work, probably because you were in editing-mode when copying the adresses!?
It is hard for me to understand the video, like what components (coil parameters, number of coils, switches, controlling electronics...) did you use in your accelerator? Do you build completely new designs in every experiment, or do you improve it step by step? Have you measured the speed and energy of the projectile?
The result looks very impressive!
Zuckerstange47, Sat Nov 03 2018, 12:07AM
Your links don't work, probably because you were in editing-mode when copying the adresses!?
It is hard for me to understand the video, like what components (coil parameters, number of coils, switches, controlling electronics...) did you use in your accelerator? Do you build completely new designs in every experiment, or do you improve it step by step? Have you measured the speed and energy of the projectile?
The result looks very impressive!
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Nov 06 2018, 10:17AM
Thanks for rating.
The speed is supposedly about 90 meters per second. The kinetic energy exceeds 1600 joules (for a large model, the capacitors are 10,000 joules at 450 volts).
And about 50 meters per second (kinetic energy of more than 600 joules) in a compact model with 100-volt capacitors with a total energy of 2027 joules.
This 450 volt design is 10,000 joules - the coil is improved.
And the design development with a voltage of 100 volts 1727 joules is optimized for the coil, core and 300 joule capacitors.
V2006, Tue Nov 06 2018, 10:17AM
Thanks for rating.
The speed is supposedly about 90 meters per second. The kinetic energy exceeds 1600 joules (for a large model, the capacitors are 10,000 joules at 450 volts).
And about 50 meters per second (kinetic energy of more than 600 joules) in a compact model with 100-volt capacitors with a total energy of 2027 joules.
This 450 volt design is 10,000 joules - the coil is improved.
And the design development with a voltage of 100 volts 1727 joules is optimized for the coil, core and 300 joule capacitors.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 05 2018, 11:50PM
Ok, so i had email contact to V2006 and i think it is time to debunk his build. He is posting his videos in virtually any thread relating to coilguns in order to get recognized.
He does not want to describe his build openly, so i wont do either. I helped him simulate his setup to understand his optimization, so i got the build details (which i wont share without his consent).
A summary of what he claims he has done and is known public:
- he built several coil guns with very high mass and a massive projectile and a massive capacitor bank. The coilguns share parts. Such builds have a huge potential to have an extreme kinetic energy output.
- his projectile is between 380g to 450g (which is open information). He claims very high speeds and very high energy like 50m/s or 90m/s depending on which capacitor bank is used and which projectile is shot. He also claimed 200m/s once.
- He does not say if the design is SCR, resonant or halfbridge. But in an other thread he described is tuning strategy.. via projectile weight, initial position and capacitor bank size and initial voltage If you like to guess which of the 3 topologies is, consider: he uses a light bulb as capacitor charge resistor (seen in videos) - does he have the technology to drive IGBTs? He uses electrolytics (clearly) - can this be a resonant topology (from Yandersen)? Does his tuning strategy sound similar to how you optimize the SCR design? Would the tuning procedure apply to a halfbridge design too? You judge.
- recently he showed a lot of frustration with the world - mainly with anyone who is driving the world forward. This idea comes from a perceived superiority from having built the most powerful coilgun.
- if any of this posts uses offensive formulation: he uses a translator. I dont think the actually can write english. I found it usefull to write my texts in google translator and see if the translator conveys the intended text content.
But has he actually a special gun? No.
- He sent his design to a Israeli university: they simulated his setup and got ~40m/s output from the 10kJ capacitor bank (where he claims 1.6kJ output energy)
- He gave me his design, i simulated and I got 32m/s.
- Those are agreeing results considering me using 480g as projectile weight while Israel could have used 380g. No matter.. the energy transfer is like 235J.
- This is off by a factor of 8 to his claims. TWO independent simulations cant be that agreeing and be wrong at the same time.
Now, first i was challenged by the result and questioned how he measures the projectile velocity. I asked him to shoot at a barrel at exactly 10m distance to analyze the audio track of the video.
He did not do it, but gave me this video instead and claims this is a 10-12m shot.
I analyzed the audio and it takes 313ms between the shot and the impact. I do not believe that it is a 10m shot - i dont think 2 medium cars would fit in this distance. Also, after he goes around his car, i counted like 12 steps in high grass to reach the target. Expecting 60cm per step, this equates to 7.2m distance. (might be less than 60cm but might also be more steps. the camera does not show)
Now at 7.2m, the sound of the impact at 340m/s speed of sound takes 21ms. So i calculate the velocity to be 24.6m/s. [35m/s if its 10m distance; 43m/s if it is 12m distance taking speed of sound into account]. Interestingly the audio analysis does match the simulation result!
Now V2006 in his own way of course, hates math and every engineer and scientist - because they are all wrong and never reach usefull results - i am the best example, agreeing with bad simulation results, even in face of hard evidence.
His experience in shooting guns, crossbows and stuff makes him believe that the observed recoil/kickback must come from an enormous projectile energy which is even more evidenced by the fact that his heavy coilgun jumps a few cm back when it shoots.
V2006 does not understand that kickback is purely dependent on conservation of impulse and not determined by projectile energy:
My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal, while kinetic energy (m/s*v^2) is vastly different.
So because of the experiences recoil/kickback he is convinced that he reaches massive amounts of kinetic energy (like a shotgun) and feels that his coilgun is extremely special. Yet his design is like any other design: 235J out of 10kJ is just 2% efficiency. His lack of recognition to his fake result makes him even more desperate.
The more you know.
DerAlbi, Wed Dec 05 2018, 11:50PM
Ok, so i had email contact to V2006 and i think it is time to debunk his build. He is posting his videos in virtually any thread relating to coilguns in order to get recognized.
He does not want to describe his build openly, so i wont do either. I helped him simulate his setup to understand his optimization, so i got the build details (which i wont share without his consent).
A summary of what he claims he has done and is known public:
- he built several coil guns with very high mass and a massive projectile and a massive capacitor bank. The coilguns share parts. Such builds have a huge potential to have an extreme kinetic energy output.
- his projectile is between 380g to 450g (which is open information). He claims very high speeds and very high energy like 50m/s or 90m/s depending on which capacitor bank is used and which projectile is shot. He also claimed 200m/s once.
- He does not say if the design is SCR, resonant or halfbridge. But in an other thread he described is tuning strategy.. via projectile weight, initial position and capacitor bank size and initial voltage If you like to guess which of the 3 topologies is, consider: he uses a light bulb as capacitor charge resistor (seen in videos) - does he have the technology to drive IGBTs? He uses electrolytics (clearly) - can this be a resonant topology (from Yandersen)? Does his tuning strategy sound similar to how you optimize the SCR design? Would the tuning procedure apply to a halfbridge design too? You judge.
- recently he showed a lot of frustration with the world - mainly with anyone who is driving the world forward. This idea comes from a perceived superiority from having built the most powerful coilgun.
- if any of this posts uses offensive formulation: he uses a translator. I dont think the actually can write english. I found it usefull to write my texts in google translator and see if the translator conveys the intended text content.
But has he actually a special gun? No.
- He sent his design to a Israeli university: they simulated his setup and got ~40m/s output from the 10kJ capacitor bank (where he claims 1.6kJ output energy)
- He gave me his design, i simulated and I got 32m/s.
- Those are agreeing results considering me using 480g as projectile weight while Israel could have used 380g. No matter.. the energy transfer is like 235J.
- This is off by a factor of 8 to his claims. TWO independent simulations cant be that agreeing and be wrong at the same time.
Now, first i was challenged by the result and questioned how he measures the projectile velocity. I asked him to shoot at a barrel at exactly 10m distance to analyze the audio track of the video.
He did not do it, but gave me this video instead and claims this is a 10-12m shot.
I analyzed the audio and it takes 313ms between the shot and the impact. I do not believe that it is a 10m shot - i dont think 2 medium cars would fit in this distance. Also, after he goes around his car, i counted like 12 steps in high grass to reach the target. Expecting 60cm per step, this equates to 7.2m distance. (might be less than 60cm but might also be more steps. the camera does not show)
Now at 7.2m, the sound of the impact at 340m/s speed of sound takes 21ms. So i calculate the velocity to be 24.6m/s. [35m/s if its 10m distance; 43m/s if it is 12m distance taking speed of sound into account]. Interestingly the audio analysis does match the simulation result!
Now V2006 in his own way of course, hates math and every engineer and scientist - because they are all wrong and never reach usefull results - i am the best example, agreeing with bad simulation results, even in face of hard evidence.
His experience in shooting guns, crossbows and stuff makes him believe that the observed recoil/kickback must come from an enormous projectile energy which is even more evidenced by the fact that his heavy coilgun jumps a few cm back when it shoots.
V2006 does not understand that kickback is purely dependent on conservation of impulse and not determined by projectile energy:
My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal, while kinetic energy (m/s*v^2) is vastly different.
So because of the experiences recoil/kickback he is convinced that he reaches massive amounts of kinetic energy (like a shotgun) and feels that his coilgun is extremely special. Yet his design is like any other design: 235J out of 10kJ is just 2% efficiency. His lack of recognition to his fake result makes him even more desperate.
The more you know.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Thu Dec 06 2018, 07:49AM
I will prepare and publish a refutation in the near future.
V2006, Thu Dec 06 2018, 07:49AM
I will prepare and publish a refutation in the near future.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Thu Dec 06 2018, 08:36AM
It would still be amazing if it worked as promised. I believed the values you claim to be possible.
Make 10m shots. Accurate 10m distance is mandatory.
DerAlbi, Thu Dec 06 2018, 08:36AM
It would still be amazing if it worked as promised. I believed the values you claim to be possible.
Make 10m shots. Accurate 10m distance is mandatory.
Re: A working model of a electromagnetic mass accelerator of high power
Sulaiman, Thu Dec 06 2018, 10:10AM
I have not looked at this particular mass accelerator
but I do remember from small experiments that I did several years ago that
coil-gun efficiency increases with mass.
i.e. coilguns are better suited to artillery than to bullets.
I have a small suburban garden which is my main excuse for not continuing with projectile accelerators,
but if we consider a multi-stage coilgun as a linear motor,
I see no fundamental theoretical reason why good efficiency can not be acheived.
Carrying around enough stored electrical energy for multiple shots will never (with current storage devices) compete with chemical energy of propellants,
so publishing designs for an improved coil-gun only helps the ignorant to hurt themselves or others, with no real gain in knowledge.
But it is fun and a challenge, so go for it if you wish.
Sulaiman, Thu Dec 06 2018, 10:10AM
I have not looked at this particular mass accelerator
but I do remember from small experiments that I did several years ago that
coil-gun efficiency increases with mass.
i.e. coilguns are better suited to artillery than to bullets.
I have a small suburban garden which is my main excuse for not continuing with projectile accelerators,
but if we consider a multi-stage coilgun as a linear motor,
I see no fundamental theoretical reason why good efficiency can not be acheived.
Carrying around enough stored electrical energy for multiple shots will never (with current storage devices) compete with chemical energy of propellants,
so publishing designs for an improved coil-gun only helps the ignorant to hurt themselves or others, with no real gain in knowledge.
But it is fun and a challenge, so go for it if you wish.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Thu Dec 06 2018, 11:36AM
DerAlbi, Thu Dec 06 2018, 11:36AM
so publishing designs for an improved coil-gun only helps the ignorant to hurt themselves or others, with no real gain in knowledge.can you explain that? (i dnot know if i understand it correctly)
But it is fun and a challenge, so go for it if you wish.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Sun Dec 09 2018, 09:56PM
fur DerAlbi:
VID 20181209 020737
Ich bin ein musikant
Ich bin fur das Fatherland
10 Meter
Deutsche Bruder, bitte gib mir Brot
New! Playlistl 10 Meter:
V2006, Sun Dec 09 2018, 09:56PM
fur DerAlbi:
VID 20181209 020737
Ich bin ein musikant
Ich bin fur das Fatherland
10 Meter
Deutsche Bruder, bitte gib mir Brot
New! Playlistl 10 Meter:
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Sun Dec 09 2018, 11:51PM
288ms for 10m. That is 38.6m/s.
With 380g that is 284J .
With 450g that is 336J.
My simulation said the energy transfer would be 235J. Not bad.
Consistent with the other video that i analyzed. It was indeed 10m! Sry for the doubt.
Still.. factor 8 away from the claimed performance.
[Edit: had typo in my calculator; I was 3m/s off because i fucked up the speed of sound)]
DerAlbi, Sun Dec 09 2018, 11:51PM
288ms for 10m. That is 38.6m/s.
With 380g that is 284J .
With 450g that is 336J.
My simulation said the energy transfer would be 235J. Not bad.
Consistent with the other video that i analyzed. It was indeed 10m! Sry for the doubt.
Still.. factor 8 away from the claimed performance.
[Edit: had typo in my calculator; I was 3m/s off because i fucked up the speed of sound)]
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 09:43AM
mv = MV
m = 40 gramm = 4 x 10-2 kg
v = 600 m/s
mv = 24 kg x m/s (Recoil impulse of a powerful hunting shotgun)
M = 385 gramm = 0.385 kg (The mass of the projectile electromagnetic accelerator mass)
V = mv/M = 24/0.385 = 62.33 m/s (The minimum speed of the projectile electromagnetic accelerator mass)
Recoil pulse of an electromagnetic accelerator of mass greater than 24 kg x m/s
Its weight is 49.5 kg. And the momentum of his recoil shifts him from his place by 5 or more centimeters.
Simulations give understated numbers.
Send the device to measure the speed.
V2006, Mon Dec 10 2018, 09:43AM
mv = MV
m = 40 gramm = 4 x 10-2 kg
v = 600 m/s
mv = 24 kg x m/s (Recoil impulse of a powerful hunting shotgun)
M = 385 gramm = 0.385 kg (The mass of the projectile electromagnetic accelerator mass)
V = mv/M = 24/0.385 = 62.33 m/s (The minimum speed of the projectile electromagnetic accelerator mass)
Recoil pulse of an electromagnetic accelerator of mass greater than 24 kg x m/s
Its weight is 49.5 kg. And the momentum of his recoil shifts him from his place by 5 or more centimeters.
Simulations give understated numbers.
Send the device to measure the speed.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 11:07AM
You already have the measurement device: your microphone is a good enough to give an estimate.
Formula is:
v = Distance / ( Time - Distance/340)
How can you argue with impulse? You cant measure impulse by "5cm jump". Bolt it down. Then you have no impulse suddenly. What then?
The only way to argue with impulse is to put the device on frictionless rails. Then you can measure velocity. in m*v, there is no "distance".
DerAlbi, Mon Dec 10 2018, 11:07AM
You already have the measurement device: your microphone is a good enough to give an estimate.
Formula is:
v = Distance / ( Time - Distance/340)
How can you argue with impulse? You cant measure impulse by "5cm jump". Bolt it down. Then you have no impulse suddenly. What then?
The only way to argue with impulse is to put the device on frictionless rails. Then you can measure velocity. in m*v, there is no "distance".
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 11:50AM
DerAlbi "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
- Does your shell weigh more than 40 grams?
9mm gun - for example, a bullet weight of 6 grams and a speed of at least 330 meters per second
this is already an impulse of 1.980 kg m / s (mv)
so that you would have the same impulse at 40 meters per second you should have a projectile mass of 49.5 grams
and you wrote about the projectile with a diameter of 8 millimeters long 30 millimeters
Can not be screwed. In the case of fixing deteriorate performance.
The sound is composite. First, the sound of launching the projectile. Then a quiet sound from punching the door. Then a louder sound from punching a steel sheet outside the door. And a very loud sound about falling steel sheet outside the door.
Count this coil:
145 mm length
Outer diameter of 23 millimeters
18 mm inside diameter
Copper rectangular wire of 3 millimeters by 4 millimeters
Electric resistance 0.02 ohm
Projectile diameter 17 millimeters
Projectile length 145 mm
450 volt capacitors 54000 microfarad
What speed will you get?
The rate of acceleration of the projectile such coil was measured by me
by measuring the time between the correct launch of the projectile and the fall of the projectile to the ground
The launch was done upright
The value of speed was in this case 40 meters per second
Impulse returns from my new coils many times more. And their impact on various materials is many times greater.
V2006, Mon Dec 10 2018, 11:50AM
DerAlbi "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
- Does your shell weigh more than 40 grams?
9mm gun - for example, a bullet weight of 6 grams and a speed of at least 330 meters per second
this is already an impulse of 1.980 kg m / s (mv)
so that you would have the same impulse at 40 meters per second you should have a projectile mass of 49.5 grams
and you wrote about the projectile with a diameter of 8 millimeters long 30 millimeters
Can not be screwed. In the case of fixing deteriorate performance.
The sound is composite. First, the sound of launching the projectile. Then a quiet sound from punching the door. Then a louder sound from punching a steel sheet outside the door. And a very loud sound about falling steel sheet outside the door.
Count this coil:
145 mm length
Outer diameter of 23 millimeters
18 mm inside diameter
Copper rectangular wire of 3 millimeters by 4 millimeters
Electric resistance 0.02 ohm
Projectile diameter 17 millimeters
Projectile length 145 mm
450 volt capacitors 54000 microfarad
What speed will you get?
The rate of acceleration of the projectile such coil was measured by me
by measuring the time between the correct launch of the projectile and the fall of the projectile to the ground
The launch was done upright
The value of speed was in this case 40 meters per second
Impulse returns from my new coils many times more. And their impact on various materials is many times greater.
Re: A working model of a electromagnetic mass accelerator of high power
Sulaiman, Mon Dec 10 2018, 01:15PM
With a little ingenuity,
a stick (or some string),
a can of soil (or a lump of clay)
and a ruler
you can make a reasonable estimate of velocity and energy.
The inaccuracy of speed of sound based measurements due to altitude and local climate can be eliminated if you measure the speed of sound also.
Or estimate your local speed of sound based on your altitude and weather.
It is rarely 343 m/s.
(I use 333 m/s because it is close and convenient for mental arithmrtic)
Sulaiman, Mon Dec 10 2018, 01:15PM
With a little ingenuity,
a stick (or some string),
a can of soil (or a lump of clay)
and a ruler
you can make a reasonable estimate of velocity and energy.
The inaccuracy of speed of sound based measurements due to altitude and local climate can be eliminated if you measure the speed of sound also.
Or estimate your local speed of sound based on your altitude and weather.
It is rarely 343 m/s.
(I use 333 m/s because it is close and convenient for mental arithmrtic)
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 01:29PM
Regarding the impulse: you are right, i was calculating with a bigger design (with 100m/s) - since that is where my gun would stop being practical (for potability).
Your gun weighs 50kg. My gun weighs 1.6kg (including battery, capacitor charger and case and a full 6 round magazine). You invest >31x more material, but you only get ~14x more energy out of it.
I am not sure why you keep comparing. Your gun is bigger and therefore stronger - maybe the strongest in the hobbyist space. But i am a factor 2 ahead in material utilization - this is what actually counts. You have no idea how hard it is to improve the technology by a factor of 2. Yet you keep laughing at me how i spent my money. (neglecting my shot frequency, and magazine, and battery management)
Your goal was strength by all means - you succeeded, fine.
I am done working for you; there is no point supporting you further. You do not value math or engineering and call anyone stupid who does not agree with you. You have fundamental flaws in your design and in your approach to engineering, education and society. I cut you some slack due to communication problems.
Now you are lecturing me, how to read audio waveforms while you arent even capable of viewing one. Your shot is very visible in the audio track and you find perfect peaks. I was already measuring in your favor of you. The forum software is broken so i cant show screenshot. Maybe someone else downloads the audio from your video and analyzes it in Audacity and can confirm the 288ms time of flight
DerAlbi, Mon Dec 10 2018, 01:29PM
Regarding the impulse: you are right, i was calculating with a bigger design (with 100m/s) - since that is where my gun would stop being practical (for potability).
Your gun weighs 50kg. My gun weighs 1.6kg (including battery, capacitor charger and case and a full 6 round magazine). You invest >31x more material, but you only get ~14x more energy out of it.
I am not sure why you keep comparing. Your gun is bigger and therefore stronger - maybe the strongest in the hobbyist space. But i am a factor 2 ahead in material utilization - this is what actually counts. You have no idea how hard it is to improve the technology by a factor of 2. Yet you keep laughing at me how i spent my money. (neglecting my shot frequency, and magazine, and battery management)
Your goal was strength by all means - you succeeded, fine.
I am done working for you; there is no point supporting you further. You do not value math or engineering and call anyone stupid who does not agree with you. You have fundamental flaws in your design and in your approach to engineering, education and society. I cut you some slack due to communication problems.
Now you are lecturing me, how to read audio waveforms while you arent even capable of viewing one. Your shot is very visible in the audio track and you find perfect peaks. I was already measuring in your favor of you. The forum software is broken so i cant show screenshot. Maybe someone else downloads the audio from your video and analyzes it in Audacity and can confirm the 288ms time of flight
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 05:03PM
Sulamain: arguing about the speed of sound in this situation is not useful. You can vary the speed of sound no matter what, you can even neglect the term completely or make the speed of sound half as fast... V2006 is claiming 2x velocity and 4x the energy.
Simulation says, that his acceleration takes place in 10 - 12ms. One could subtract this from the audio time measurement and get a better estimate of the muzzle-velocity. Including those 10ms sets the speed to 40ms instead of 38. Nothing changes the fact that is not 50, 60, 70 or 80 and never ever 100m/s or and the claimed 1.6kJ never ever happened and never will happen with this build.
Its all based on the fact that the gun moves 5cm backwards during a shot.
DerAlbi, Mon Dec 10 2018, 05:03PM
Sulamain: arguing about the speed of sound in this situation is not useful. You can vary the speed of sound no matter what, you can even neglect the term completely or make the speed of sound half as fast... V2006 is claiming 2x velocity and 4x the energy.
Simulation says, that his acceleration takes place in 10 - 12ms. One could subtract this from the audio time measurement and get a better estimate of the muzzle-velocity. Including those 10ms sets the speed to 40ms instead of 38. Nothing changes the fact that is not 50, 60, 70 or 80 and never ever 100m/s or and the claimed 1.6kJ never ever happened and never will happen with this build.
Its all based on the fact that the gun moves 5cm backwards during a shot.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 05:14PM
DerAlbi with math you are bad too:
"My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
- at 20 joules of energy and speed of 40 meters per second the recoil impulse of your model is equal to 1 KG x M/S (m = 25 gramm, v = 40 m/s
- 9mm gun when shooting has a recoil impulse of two to three times more than your 25 grams at 40 meters per second (m = 6 - 9 gramm, v = 300 - 420 m/s, mv = 2 - 3 KG x M/S)
What a recoil impulse will be at a speed of 100 m / s you do not know. Because you have no such model.
If you confuse what you want (100 m / s) with what you have (40 m / s, 20 Joules), there is no truth in your calculations.
V2006, Mon Dec 10 2018, 05:14PM
DerAlbi with math you are bad too:
"My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
- at 20 joules of energy and speed of 40 meters per second the recoil impulse of your model is equal to 1 KG x M/S (m = 25 gramm, v = 40 m/s
- 9mm gun when shooting has a recoil impulse of two to three times more than your 25 grams at 40 meters per second (m = 6 - 9 gramm, v = 300 - 420 m/s, mv = 2 - 3 KG x M/S)
What a recoil impulse will be at a speed of 100 m / s you do not know. Because you have no such model.
If you confuse what you want (100 m / s) with what you have (40 m / s, 20 Joules), there is no truth in your calculations.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 05:50PM
Sulaiman Ballistic pendulum with such energy it is dangerous to try
V2006, Mon Dec 10 2018, 05:50PM
Sulaiman Ballistic pendulum with such energy it is dangerous to try
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 07:34PM
fur DerAlbi:
The conclusion about speed and energy is based on the breakthrough of the door and the steel sheet with a thickness of 2 millimeters behind the door
accelerator weight is almost equal to human weight
When launching a projectile, the accelerator rolls back.
It is as if a person was thrown back by the recoil of a gun.
I still agree that the velocity of the projectile from 63 m / s to 80 m / s
It fits the pulse of recoil of a powerful hunting shotgun:
mv = MV
m = 40 gram
v = 500-600 m/s
M = 385 gram
V = 63 -80 m/s
According to my initial calculations, the speed was 60-65 m / s.
What corresponds to the recoil momentum of a powerful shotgun:
P = MV
P = 60 M/S x 0.385 KG = 23.1 KG x M/S
*My accelerator layout can be significantly improved in the same dimensions.
There is still room for two - three capacitors 10 000 microfarads, 450 volts.
V2006, Mon Dec 10 2018, 07:34PM
fur DerAlbi:
The conclusion about speed and energy is based on the breakthrough of the door and the steel sheet with a thickness of 2 millimeters behind the door
accelerator weight is almost equal to human weight
When launching a projectile, the accelerator rolls back.
It is as if a person was thrown back by the recoil of a gun.
I still agree that the velocity of the projectile from 63 m / s to 80 m / s
It fits the pulse of recoil of a powerful hunting shotgun:
mv = MV
m = 40 gram
v = 500-600 m/s
M = 385 gram
V = 63 -80 m/s
According to my initial calculations, the speed was 60-65 m / s.
What corresponds to the recoil momentum of a powerful shotgun:
P = MV
P = 60 M/S x 0.385 KG = 23.1 KG x M/S
*My accelerator layout can be significantly improved in the same dimensions.
There is still room for two - three capacitors 10 000 microfarads, 450 volts.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 07:35PM
Oh come on -.- This is pure trolling.
See, i know. Without a model. And heey, its actually exactly
Troll. You shouldnt be here.
DerAlbi, Mon Dec 10 2018, 07:35PM
Oh come on -.- This is pure trolling.
What a recoil impulse will be at a speed of 100 m / s you do not know. Because you have no such model.25g * 100m/s = 2.5 kg * m/s.
See, i know. Without a model. And heey, its actually exactly
2 - 3 KG x M/S
Troll. You shouldnt be here.
Re: A working model of a electromagnetic mass accelerator of high power
klugesmith, Mon Dec 10 2018, 07:37PM
Sounds like there's disagreement about actual projectile velocity.
I would not depend on any results from simulations and/or from coil timing.
Ballistic pendulum seems like a good way to get accurate answers without measuring small time intervals or quantifying damage to targets. Maybe organized coilgunners could adopt a common design.
It works for a wide range of projectile sizes and speeds. Today's Wikipedia article says "Robins experimented with musket balls of around one ounce in mass (30 g), while other contemporaries used his methods with cannon shot of one to three pounds (0.5 to 1.4 kg)."
Nearest experience for me was 25 years ago, measuring the energy of "dry ice bombs" (plastic soda bottles pressurized until they burst).
Following the classic "cylinder and piston" model for thermodynamic work, I launched solid concrete pistons almost vertically from a 6-inch-diameter cold gas mortar. A representative outcome was measured flying time of 4.1 seconds for a 10 kg projectile. That works out to maximum height 20 meters, velocity 20 m/s, momentum 200 kg * m/s, energy 2000 joules. Measured with mechanical stopwatch (no electronics).
klugesmith, Mon Dec 10 2018, 07:37PM
Sounds like there's disagreement about actual projectile velocity.
I would not depend on any results from simulations and/or from coil timing.
Ballistic pendulum seems like a good way to get accurate answers without measuring small time intervals or quantifying damage to targets. Maybe organized coilgunners could adopt a common design.
It works for a wide range of projectile sizes and speeds. Today's Wikipedia article says "Robins experimented with musket balls of around one ounce in mass (30 g), while other contemporaries used his methods with cannon shot of one to three pounds (0.5 to 1.4 kg)."
Nearest experience for me was 25 years ago, measuring the energy of "dry ice bombs" (plastic soda bottles pressurized until they burst).
Following the classic "cylinder and piston" model for thermodynamic work, I launched solid concrete pistons almost vertically from a 6-inch-diameter cold gas mortar. A representative outcome was measured flying time of 4.1 seconds for a 10 kg projectile. That works out to maximum height 20 meters, velocity 20 m/s, momentum 200 kg * m/s, energy 2000 joules. Measured with mechanical stopwatch (no electronics).
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 07:39PM
DerAlbi it was literally written by you "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
V2006, Mon Dec 10 2018, 07:39PM
DerAlbi it was literally written by you "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal"
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 07:44PM
klugesmith good idea. But I have no money for such experiences right now.
V2006, Mon Dec 10 2018, 07:44PM
klugesmith good idea. But I have no money for such experiences right now.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 07:48PM
And you wrote literally 1.6kJ. At least my claim can be corrected and has valid origins. And it was made in a private conversation via email in an effort to explain to you that impulse and energy is something different. You observed high impulse, thought it was high energy. Now you publishing parts of private conversation with the only (correctable) mistake i made.
What for?
Cover up your 1.6kJ bull shit? I was wrong, so its ok that you are wrong?
DerAlbi, Mon Dec 10 2018, 07:48PM
And you wrote literally 1.6kJ. At least my claim can be corrected and has valid origins. And it was made in a private conversation via email in an effort to explain to you that impulse and energy is something different. You observed high impulse, thought it was high energy. Now you publishing parts of private conversation with the only (correctable) mistake i made.
What for?
Cover up your 1.6kJ bull shit? I was wrong, so its ok that you are wrong?
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 10 2018, 08:24PM
DerAlbi This is not a personal conversation - you wrote it here:
DerAlbi
Wed Dec 05 2018, 11:50PM
"My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal, while kinetic energy (m/s*v^2) is vastly different."
I can be a little mistaken - you did not send the device for measuring speed
V2006, Mon Dec 10 2018, 08:24PM
DerAlbi This is not a personal conversation - you wrote it here:
DerAlbi
Wed Dec 05 2018, 11:50PM
"My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal, while kinetic energy (m/s*v^2) is vastly different."
I can be a little mistaken - you did not send the device for measuring speed
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Mon Dec 10 2018, 08:30PM
Holy shit
sorry I really thought this was from our emails. I am so messed up.
I was angry because you wasted my time without having done accurate measurements before opening your mouth everywhere.
I formulated this part in an email, but decided to make it a part of the debunking for all to see because you were rude to Zuckerstange.
Your last email made it clear that you judge projectile energy based on impulse.
DerAlbi, Mon Dec 10 2018, 08:30PM
Holy shit
sorry I really thought this was from our emails. I am so messed up.I was angry because you wasted my time without having done accurate measurements before opening your mouth everywhere.
I formulated this part in an email, but decided to make it a part of the debunking for all to see because you were rude to Zuckerstange.
Your last email made it clear that you judge projectile energy based on impulse.
Re: A working model of a electromagnetic mass accelerator of high power
_Eugen_, Mon Dec 10 2018, 09:10PM
Funny "sratch".
To V2006:
Actually there is no need in any device at all to distinguish such a difference in velocity.
You should only fire vertically and measure a time t when a projectile fall down.
Initial velocity will be simply g*t/2 (where g = 9,8).
Hope you would not claim old man Newton to be wrong :)
etc
Your cannon is rather powerful and contains as many caps as ten of smaller coilguns of other gaussbuilders, so you could use it as source of materials you need so much. But what are you plannning to improve? More condensed energy will turn your 50kg device to wall-breaking cannon moved by wheels and four horses.
_Eugen_, Mon Dec 10 2018, 09:10PM
Funny "sratch".
To V2006:
Sulaiman Ballistic pendulum with such energy it is dangerous to try
klugesmith good idea. But I have no money for such experiences right now.
I can be a little mistaken - you did not send the device for measuring speed
Actually there is no need in any device at all to distinguish such a difference in velocity.
You should only fire vertically and measure a time t when a projectile fall down.
Initial velocity will be simply g*t/2 (where g = 9,8).
Hope you would not claim old man Newton to be wrong :)
My accelerator layout can be significantly improved in the same dimensions.
There is still room for two - three capacitors 10 000 microfarads, 450 volts.
for the money that you spend, I would do even better(from neighbouring thread)
etc
Your cannon is rather powerful and contains as many caps as ten of smaller coilguns of other gaussbuilders, so you could use it as source of materials you need so much. But what are you plannning to improve? More condensed energy will turn your 50kg device to wall-breaking cannon moved by wheels and four horses.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 08:05AM
_Eugen_: This is a good and objective way.
Launching shells vertically up I measured the speed of less powerful coils.
Launch a projectile vertically up from this powerful coil is not yet possible.
I could also launch a shell at a 45 degree angle to the horizon. And measure the distance of his flight. But nowhere to do it.
I have no money for refueling cars for long journeys.
If this model of accelerator will be supplemented by three or four capacitors, its weight will not change.
It also has a second coil. This second coil is not needed at all. A second coil was installed to compare characteristics. The weight of the second coil with fasteners is 5 - 6 kg, 5-6 kilogram is the weight of several capacitors 10,000 microfarads 450 Volts.
There will be only a destroyer of walls. In the same dimensions. Without wheels and four horses.
*In this, running vertically up complicates the situation. For example, it was noted that with a fixed accelerator, its performance is reduced to 10% of kinetic energy (depending on the degree of fixation). Surprisingly, the projectile energy is much higher if the accelerator has the ability to roll back!
V2006, Tue Dec 11 2018, 08:05AM
_Eugen_: This is a good and objective way.
Launching shells vertically up I measured the speed of less powerful coils.
Launch a projectile vertically up from this powerful coil is not yet possible.
I could also launch a shell at a 45 degree angle to the horizon. And measure the distance of his flight. But nowhere to do it.
I have no money for refueling cars for long journeys.
If this model of accelerator will be supplemented by three or four capacitors, its weight will not change.
It also has a second coil. This second coil is not needed at all. A second coil was installed to compare characteristics. The weight of the second coil with fasteners is 5 - 6 kg, 5-6 kilogram is the weight of several capacitors 10,000 microfarads 450 Volts.
There will be only a destroyer of walls. In the same dimensions. Without wheels and four horses.
*In this, running vertically up complicates the situation. For example, it was noted that with a fixed accelerator, its performance is reduced to 10% of kinetic energy (depending on the degree of fixation). Surprisingly, the projectile energy is much higher if the accelerator has the ability to roll back!
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 11:42AM
Where do you come up with those bullshit numbers like "10%" if you cant measure correctly neither horizontal nor vertical??
Your acceleration is between 530G (for 380g) or 450G (for 450g). So shooting vertical instead of horizontal is a difference around 0.2%.
Have you thought of the fact that changing your measurement method changes the measured value more than the real value changes?
Use your microphone. It is precise enough and consistent. You can use it anywhere with no problem.
If anything, fixing the accelerator should increase performance. The energy spent to push the device backwards becomes smaller the less movement is done.
At this point i simply guess, that without the accelerators movement, the shot just felt less loud, so it must be less projectile energy.. right?
DerAlbi, Tue Dec 11 2018, 11:42AM
Where do you come up with those bullshit numbers like "10%" if you cant measure correctly neither horizontal nor vertical??
Your acceleration is between 530G (for 380g) or 450G (for 450g). So shooting vertical instead of horizontal is a difference around 0.2%.
Have you thought of the fact that changing your measurement method changes the measured value more than the real value changes?
Use your microphone. It is precise enough and consistent. You can use it anywhere with no problem.
If anything, fixing the accelerator should increase performance. The energy spent to push the device backwards becomes smaller the less movement is done.
At this point i simply guess, that without the accelerators movement, the shot just felt less loud, so it must be less projectile energy.. right?
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 01:20PM
DerAlbi: Nein.
10% of the energy is perfectly visible in the depth of penetration of the projectile into the ballistic clay.
For me, it was also surprising to see it (the fact that the rollback improves the performance of the electromagnetic mass accelerator)
V2006, Tue Dec 11 2018, 01:20PM
DerAlbi: Nein.
10% of the energy is perfectly visible in the depth of penetration of the projectile into the ballistic clay.
For me, it was also surprising to see it (the fact that the rollback improves the performance of the electromagnetic mass accelerator)
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 01:46PM
The acceleration takes place in 10ms.
If your gun weighs 50kg, and the projectile 380g, then with 40ms exit velocity, a frictionless floating coilgun would move backward with a velocity of 0.34m/s (impulse conservation). During the relevant 10ms this is only a 3mm shift. In reality this is even less, because this assumes constant velocity and no acceleration (and as said, neglecting friction).
It is very likely that the gun-movement during the relevant acceleration time is less than 1mm. Basically less than the precision you can find the initial position.
Impact depth is not a relieable measurement and ideally only represents the densitiy differences between projectile and target.
Try to translate:
Fluctuation in penetration come from various factors. Where you hit the target for example - The gun changes recoil, so it is impossible to hit the same place on target.
DerAlbi, Tue Dec 11 2018, 01:46PM
The acceleration takes place in 10ms.
If your gun weighs 50kg, and the projectile 380g, then with 40ms exit velocity, a frictionless floating coilgun would move backward with a velocity of 0.34m/s (impulse conservation). During the relevant 10ms this is only a 3mm shift. In reality this is even less, because this assumes constant velocity and no acceleration (and as said, neglecting friction).
It is very likely that the gun-movement during the relevant acceleration time is less than 1mm. Basically less than the precision you can find the initial position.
Impact depth is not a relieable measurement and ideally only represents the densitiy differences between projectile and target.
Try to translate:
Fluctuation in penetration come from various factors. Where you hit the target for example - The gun changes recoil, so it is impossible to hit the same place on target.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 02:09PM
This is another confirmation that your calculations are not true.
Projectile speed in the range from 62 to 90 meters per second.
I myself could not believe my eyes when I saw that the fastening of the accelerator impairs its operation.
Before launching the projectile at the door, I conducted 20 experiments with ballistic clay. With shells of various weights - from 380 grams to 550 grams.
I even made a special emphasis for braking the accelerator against the wall.
And I was surprised to see that the rollback is very necessary.
This effect is discovered thanks to you. I wanted to make the most effective launch.
I already have some explanation for this effect.
Perhaps not the best. But there is. Rollback accelerator improves its performance! Incredible.
V2006, Tue Dec 11 2018, 02:09PM
This is another confirmation that your calculations are not true.
Projectile speed in the range from 62 to 90 meters per second.
I myself could not believe my eyes when I saw that the fastening of the accelerator impairs its operation.
Before launching the projectile at the door, I conducted 20 experiments with ballistic clay. With shells of various weights - from 380 grams to 550 grams.
I even made a special emphasis for braking the accelerator against the wall.
And I was surprised to see that the rollback is very necessary.
This effect is discovered thanks to you. I wanted to make the most effective launch.
I already have some explanation for this effect.
Perhaps not the best. But there is. Rollback accelerator improves its performance! Incredible.
Re: A working model of a electromagnetic mass accelerator of high power
TechNerd, Tue Dec 11 2018, 02:34PM
I should have made a bucket of popcorn...!
TechNerd, Tue Dec 11 2018, 02:34PM
I should have made a bucket of popcorn...!
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 03:23PM
So... you are recognizing a difference of +10% energy (=110%).
Energy = m/2 * v^2.
This means you observe a velocity (and impulse-) increase of 4.8%.
4.8% of your 62 - 90m/s is 2.88 - 4.32m/s.
So you are recognizing a change of around 3m/s with absolute confidence while you are actually unsure if it is 60m/s or 90m/s while it is actually just 40m/s?
Did i summarize correctly?
Must be my math, that is again flawed.
DerAlbi, Tue Dec 11 2018, 03:23PM
So... you are recognizing a difference of +10% energy (=110%).
Energy = m/2 * v^2.
This means you observe a velocity (and impulse-) increase of 4.8%.
4.8% of your 62 - 90m/s is 2.88 - 4.32m/s.
So you are recognizing a change of around 3m/s with absolute confidence while you are actually unsure if it is 60m/s or 90m/s while it is actually just 40m/s?
Did i summarize correctly?
Must be my math, that is again flawed.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 03:41PM
fur DrAlbi: Nein.
I do not speak now about the speed range.
I am now talking about the fact that the possibility of a rollback increases the performance of an electromagnetic accelerator by 10%.
This is clearly seen from the depth of penetration of projectiles into ballistic clay — in the course of a great many experiments.
Video while I can not provide.
V2006, Tue Dec 11 2018, 03:41PM
fur DrAlbi: Nein.
I do not speak now about the speed range.
I am now talking about the fact that the possibility of a rollback increases the performance of an electromagnetic accelerator by 10%.
This is clearly seen from the depth of penetration of projectiles into ballistic clay — in the course of a great many experiments.
Video while I can not provide.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 04:18PM
Well, trusting you is no easy thing.
Clay viscosity changes with temperature, did you do your test under the same conditions?
I mean the clay might be very fluid at 90°C while at 62°C you have a different penetration behavior. It is really supposed to be used at 40°C. Of course a 1600kg ball of such clay behaves different than a 280kg ball.. maybe you lost 10% during the 20 experiments
Wait.. what..
DerAlbi, Tue Dec 11 2018, 04:18PM
Well, trusting you is no easy thing.
Clay viscosity changes with temperature, did you do your test under the same conditions?
I mean the clay might be very fluid at 90°C while at 62°C you have a different penetration behavior. It is really supposed to be used at 40°C. Of course a 1600kg ball of such clay behaves different than a 280kg ball.. maybe you lost 10% during the 20 experiments
Wait.. what..
Re: A working model of a electromagnetic mass accelerator of high power
_Eugen_, Tue Dec 11 2018, 05:00PM
Well, the thread becomes really amusing (V2006, thank you very much).
Shot at 45 degrees will give a range of v*v/2g = 125 meters at 50 m/s initial velocity - not a long journey for any car..
May be you mean that you are restricted to indoor experiments only? Then you could go to the nearest park or wasteland. Oh I forgot you cannon is 50 kg weight. So you need a little cart or trolley to deliver you device to the place of action.. Another thing you should use must be a strong helmet - one from knight armour would work best. It will protect your head from unintended crushing by 370...480 g shell if you try to shot upwards as I recommended you previously.
And one thing else is mandatory - a jacket (yellow one would be the best). It is necessary because if someone see you in a park with an incredible machine in trolley and helmet - you can always say that you are something like gardener and ask not to distract you from your work.
An interesting effect. I really suppose you could win Nobel prize if you discover this mystery. I'm not sure about how much it is now, but you definitely will be able to buy a lot of fuel for your car.
_Eugen_, Tue Dec 11 2018, 05:00PM
Well, the thread becomes really amusing (V2006, thank you very much).
Launch a projectile vertically up from this powerful coil is not yet possible.Mmmmm.. why?
I could also launch a shell at a 45 degree angle to the horizon. And measure the distance of his flight. But nowhere to do it.
I have no money for refueling cars for long journeys.
Shot at 45 degrees will give a range of v*v/2g = 125 meters at 50 m/s initial velocity - not a long journey for any car..
May be you mean that you are restricted to indoor experiments only? Then you could go to the nearest park or wasteland. Oh I forgot you cannon is 50 kg weight. So you need a little cart or trolley to deliver you device to the place of action.. Another thing you should use must be a strong helmet - one from knight armour would work best. It will protect your head from unintended crushing by 370...480 g shell if you try to shot upwards as I recommended you previously.
And one thing else is mandatory - a jacket (yellow one would be the best). It is necessary because if someone see you in a park with an incredible machine in trolley and helmet - you can always say that you are something like gardener and ask not to distract you from your work.
In this, running vertically up complicates the situation. For example, it was noted that with a fixed accelerator, its performance is reduced to 10% of kinetic energy (depending on the degree of fixation). Surprisingly, the projectile energy is much higher if the accelerator has the ability to roll back!
An interesting effect. I really suppose you could win Nobel prize if you discover this mystery. I'm not sure about how much it is now, but you definitely will be able to buy a lot of fuel for your car.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 05:57PM
Eugen, This is another confirmation that your calculations are not true. You cant do it.
1.6kJ flies for many hundred meters.You can see it from the depth of penetration. The whole car jumps 5cm back at launch. Suspension allows for more efficient launch.
20 Experiments can move the car, even when tank empty.
DerAlbi, Tue Dec 11 2018, 05:57PM
Eugen, This is another confirmation that your calculations are not true. You cant do it.
1.6kJ flies for many hundred meters.You can see it from the depth of penetration. The whole car jumps 5cm back at launch. Suspension allows for more efficient launch.
20 Experiments can move the car, even when tank empty.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 07:51PM
DerAlbi: The conditions are completely identical.
The temperature is the same.
A series of shots without stop (with rollback).
And a series of shots with emphasis.
It was also hard for me to understand. But I already understood what was the matter.
V2006, Tue Dec 11 2018, 07:51PM
DerAlbi: The conditions are completely identical.
The temperature is the same.
A series of shots without stop (with rollback).
And a series of shots with emphasis.
It was also hard for me to understand. But I already understood what was the matter.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 07:52PM
_Eugen_ :
You are the same Mathematician as DrAlbi (DerAlbi "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal").
S = V2 x SIN 2а/g
You halve the distance a body flies at an angle to the horizon.
Unless of course we live with you in the same reality and the same universe.
A body thrown at an angle to the horizon with an initial speed of 50 meters per second will fly on this miserable planet about 250 meters (Shot at 45 degrees). And not 125 meters as you wrote.
In the denominator of your formula, the excess number 2
S = V x V / g ! (Shot at 45 degrees).
V2006, Tue Dec 11 2018, 07:52PM
_Eugen_ :
You are the same Mathematician as DrAlbi (DerAlbi "My gun at 40m/s and 20J has the same kickback as a 9mm gun when shooting because Impulse = ProjMass*Velocity is nearly equal").
S = V2 x SIN 2а/g
You halve the distance a body flies at an angle to the horizon.
Unless of course we live with you in the same reality and the same universe.
A body thrown at an angle to the horizon with an initial speed of 50 meters per second will fly on this miserable planet about 250 meters (Shot at 45 degrees). And not 125 meters as you wrote.
In the denominator of your formula, the excess number 2
S = V x V / g ! (Shot at 45 degrees).
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 08:43PM
I laughed so hard, i was in tears Basically Eugen compensated already for your overestimation.
V2006, make videos of 10m shots with a fixed gun and with a movable gun. I can analyze the audio. It is the most reliable measurement we have on this miserable planet.
DerAlbi, Tue Dec 11 2018, 08:43PM
I laughed so hard, i was in tears
Basically Eugen compensated already for your overestimation. V2006, make videos of 10m shots with a fixed gun and with a movable gun. I can analyze the audio. It is the most reliable measurement we have on this miserable planet.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Dec 11 2018, 08:49PM
DerAlbi : To return to the experiments I need at least 100 Euro. A better 200
V2006, Tue Dec 11 2018, 08:49PM
DerAlbi : To return to the experiments I need at least 100 Euro. A better 200
Re: A working model of a electromagnetic mass accelerator of high power
_Eugen_, Tue Dec 11 2018, 09:19PM
To DerAlbi:
To V2006:
But from another point of view I understand now why you chose such a big gun to develop: more size - more investment and donations, isn't it?
_Eugen_, Tue Dec 11 2018, 09:19PM
To DerAlbi:
Basically Eugen compensated already for your overestimation.Damn it... I tried to outwit V2006, but you revealed my tricky plan....I'm completely defeated and don't know what to do:-(( . Now, he will really conquer the world I think.
To V2006:
To return to the experiments I need at least 100 Euro. A better 200Oh you are too modest. Why only 200?
But from another point of view I understand now why you chose such a big gun to develop: more size - more investment and donations, isn't it?
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Tue Dec 11 2018, 11:01PM
Dear V2006, i only earn 1600€.. i could give you maybe between 62€ and 90€, but that would be 10% of my income. Money just leaves my pockets with 40m/s. Sometimes, when i see my money stacks shrinking, it kicks be back about 5cm because it hurts so much.
In other months, I try throwing money in the direction of Russia at 45°, but my penetration is not deep enough, a factor of 2 too short in fact. Green rain on this miserable planet. Belarus, mainly.
DerAlbi, Tue Dec 11 2018, 11:01PM
Dear V2006, i only earn 1600€.. i could give you maybe between 62€ and 90€, but that would be 10% of my income. Money just leaves my pockets with 40m/s. Sometimes, when i see my money stacks shrinking, it kicks be back about 5cm because it hurts so much.
In other months, I try throwing money in the direction of Russia at 45°, but my penetration is not deep enough, a factor of 2 too short in fact. Green rain on this miserable planet. Belarus, mainly.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 07:27AM
_Eugen_ :
In your world, reality, universe (where “a shot at 45 degrees will give the range v * v / 2g = 125 meters with an initial speed of 50 m / sâ€) you do not understand our problems
There are fewer
Gauss pistol of the greatest force VID 20181031 201942
High power coil gun gunVID 20181031 213635
High power coil gun gunVID 20181031 224651
If you have more than 200 - send. There is no help from Germany - a natural outcome of the consequences of defeats in two world wars.
The poor Germans. I am very sorry for them. If I had known how difficult it was for them there, I would have sent my prison rations of bread (evening).
V2006, Wed Dec 12 2018, 07:27AM
_Eugen_ :
In your world, reality, universe (where “a shot at 45 degrees will give the range v * v / 2g = 125 meters with an initial speed of 50 m / sâ€) you do not understand our problems
There are fewer
Gauss pistol of the greatest force VID 20181031 201942
High power coil gun gunVID 20181031 213635
High power coil gun gunVID 20181031 224651
If you have more than 200 - send. There is no help from Germany - a natural outcome of the consequences of defeats in two world wars.
The poor Germans. I am very sorry for them. If I had known how difficult it was for them there, I would have sent my prison rations of bread (evening).
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 07:28AM
DerAlbi:
Germany has not recovered after defeat in two world wars. The poor Germans. They suffer so much. I am so sorry.
V2006, Wed Dec 12 2018, 07:28AM
DerAlbi:
Germany has not recovered after defeat in two world wars. The poor Germans. They suffer so much. I am so sorry.
Re: A working model of a electromagnetic mass accelerator of high power
TechNerd, Wed Dec 12 2018, 08:30AM
V2006 where are you actually from? I'm guessing some eastern European country?
TechNerd, Wed Dec 12 2018, 08:30AM
V2006 where are you actually from? I'm guessing some eastern European country?
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 08:37AM
TechNerd
I can not give this answer here. Write to e-mail: **link**
V2006, Wed Dec 12 2018, 08:37AM
TechNerd
I can not give this answer here. Write to e-mail: **link**
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 12 2018, 08:45AM
Seen, there is actually help from Germany. Some of your Youtube-Links are working for others. You sometimes post links to your youtube studio which does not work without your login data on this miserable world.
A video link must look like "youtue.com / watch?v= blablabla"
The first video is:
DerAlbi, Wed Dec 12 2018, 08:45AM
Seen, there is actually help from Germany. Some of your Youtube-Links are working for others. You sometimes post links to your youtube studio which does not work without your login data on this miserable world.
A video link must look like "youtue.com / watch?v= blablabla"
The first video is:
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 09:06AM
DerAlbi: Danke shon parteigenosse
Ich bin fur das Faterland
V2006, Wed Dec 12 2018, 09:06AM
DerAlbi: Danke shon parteigenosse
Ich bin fur das Faterland
Re: A working model of a electromagnetic mass accelerator of high power
Zuckerstange47, Wed Dec 12 2018, 02:49PM
We Germons do not have a strong connection towards the world wars, because many of us and our ancestors were not germon in that time. So that cannot be a relevant argument. Many of us are african-germon, arabian-germon and so on...
I feel sorry that money is such a big problem for you, and I also would be interested in which region (roughly) you are located. Why do you want that to be secret?
In Germoney everyone gets >400 € each month for free (+housing and some other benefits), maybe it could be interesting for you, too? It is really not as difficult here, as you think
@DerAlbi: I did not feel offended by any post I read from V2006, but maybe I did not understand everything correctly.
Zuckerstange47, Wed Dec 12 2018, 02:49PM
We Germons do not have a strong connection towards the world wars, because many of us and our ancestors were not germon in that time. So that cannot be a relevant argument. Many of us are african-germon, arabian-germon and so on...
I feel sorry that money is such a big problem for you, and I also would be interested in which region (roughly) you are located. Why do you want that to be secret?
In Germoney everyone gets >400 € each month for free (+housing and some other benefits), maybe it could be interesting for you, too? It is really not as difficult here, as you think
@DerAlbi: I did not feel offended by any post I read from V2006, but maybe I did not understand everything correctly.
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 12 2018, 03:17PM
Naaah.. stop inviting people to our oh so social dreamland. I dont feel like you pay many taxes right now nor do you understand where they vanish in our bureaucracy-overkill. The 400€ are certainly not free for those who work. Thinking only about the beneficiary is sooo sweet.. until reality hits you. Pay his flat, give him the 400€ yourself. Report back for how long think this was a good idea and for how long you think this is sustainable. Dont think because the cost is shared among all, that this thought-experiment is not representative. If you continue inviting, and you reach the point where your have 1:1 working:not-working ratio, that is exactly what you get. Such a system breaks with every additional parasite, and long before the 1:1 ratio! (Parasite: I dont mean this term offensive, it is just the perfect description: an organism that lives on another organisms expense)
And no, V2006 is not offensive, quite amusing actually. Watching him come up with ridicules numbers from ridicules observations and understanding the ridicules connection between them is fun. But he does not value education nor engineering.. which makes any argument for the truth invalid - which leads to even more fun. But in its roots, it is sad.
DerAlbi, Wed Dec 12 2018, 03:17PM
Naaah.. stop inviting people to our oh so social dreamland. I dont feel like you pay many taxes right now nor do you understand where they vanish in our bureaucracy-overkill. The 400€ are certainly not free for those who work. Thinking only about the beneficiary is sooo sweet.. until reality hits you. Pay his flat, give him the 400€ yourself. Report back for how long think this was a good idea and for how long you think this is sustainable. Dont think because the cost is shared among all, that this thought-experiment is not representative. If you continue inviting, and you reach the point where your have 1:1 working:not-working ratio, that is exactly what you get. Such a system breaks with every additional parasite, and long before the 1:1 ratio! (Parasite: I dont mean this term offensive, it is just the perfect description: an organism that lives on another organisms expense)
And no, V2006 is not offensive, quite amusing actually. Watching him come up with ridicules numbers from ridicules observations and understanding the ridicules connection between them is fun. But he does not value education nor engineering.. which makes any argument for the truth invalid - which leads to even more fun. But in its roots, it is sad.
Re: A working model of a electromagnetic mass accelerator of high power
_Eugen_, Wed Dec 12 2018, 04:08PM
To V2006:
And are you sure that you do understand your problems properly?
Ok, let's speak seriously.
In fact, there is only one annoying thing.
You are posting multiple videos with your untidy device and state that you invented something new and are able to improve it to outstanding parameters - OK, that's your right, although my (and not only my) opinion is that is not so for many reasons. My IMHO is that you are discrediting a beautiful idea of coilgun more that you are advancing it.
You littered nearly all forums (including foreign ones) with what you assume to be your advertising messages and don't want to hear anyone who gives you advice about how to make the parameters of your creation (not only technical) more attractive, and you reject any scientific approach at all - that's all right, forums are made for discussing different opinions and suggestions, why not.
But it is unacceptable to use other participants' threads for it.
JUST DO IT IN YOUR THREAD - and that will be OK.
So the attitude to you is only a feedback from your one to other's efforts to help you.
I really wish you good luck in your creative work (no kidding here) and more sense of humor :)
_Eugen_, Wed Dec 12 2018, 04:08PM
To V2006:
you do not understand our problems
And are you sure that you do understand your problems properly?
Ok, let's speak seriously.
In fact, there is only one annoying thing.
You are posting multiple videos with your untidy device and state that you invented something new and are able to improve it to outstanding parameters - OK, that's your right, although my (and not only my) opinion is that is not so for many reasons. My IMHO is that you are discrediting a beautiful idea of coilgun more that you are advancing it.
You littered nearly all forums (including foreign ones) with what you assume to be your advertising messages and don't want to hear anyone who gives you advice about how to make the parameters of your creation (not only technical) more attractive, and you reject any scientific approach at all - that's all right, forums are made for discussing different opinions and suggestions, why not.
But it is unacceptable to use other participants' threads for it.
JUST DO IT IN YOUR THREAD - and that will be OK.
So the attitude to you is only a feedback from your one to other's efforts to help you.
I really wish you good luck in your creative work (no kidding here) and more sense of humor :)
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 12 2018, 04:17PM
Beautiful said. Hope its machine translatable without loosing its sense.
DerAlbi, Wed Dec 12 2018, 04:17PM
Beautiful said. Hope its machine translatable without loosing its sense.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 06:13PM
Zuckerstange47: After prison, I'm doing badly.
It is quite possible that interesting.
Write on the mail - I will tell who I am and where.
*DrAlbi just does not understand the jokes.
V2006, Wed Dec 12 2018, 06:13PM
Zuckerstange47: After prison, I'm doing badly.
It is quite possible that interesting.
Write on the mail - I will tell who I am and where.
*DrAlbi just does not understand the jokes.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 06:14PM
_Eugen_ Ok. Throw a couple of hundred euros - we divide the world equally. Which hemisphere will you choose - north or south?
Or from the Big Dipper to the Andromeda nebula?
If you are certainly interested in such trifles. You are from the reality where Shot at 45 degrees will give a range of v*v/2g = 125 meters at 50 m/s initial velocity.
V2006, Wed Dec 12 2018, 06:14PM
_Eugen_ Ok. Throw a couple of hundred euros - we divide the world equally. Which hemisphere will you choose - north or south?
Or from the Big Dipper to the Andromeda nebula?
If you are certainly interested in such trifles. You are from the reality where Shot at 45 degrees will give a range of v*v/2g = 125 meters at 50 m/s initial velocity.
Re: A working model of a electromagnetic mass accelerator of high power
Zuckerstange47, Wed Dec 12 2018, 07:18PM
I understand you perfectly, my post was not meant seriously. You are right, I do not pay much taxes, but I do not get benefits, either. I think the social system will fail inevitable and I do not have any interest in keeping it alive longer than needed - the earlier the collapse, the higher the chance of recovery.
@V2600: I did not understand your last post, even after reading what _Eugen_ wrote before. What does dividing the world have to do with it? Maybe something was lost in translation (I am using translation software, too).
I will respect your need for keeping your privacy.
Zuckerstange47, Wed Dec 12 2018, 07:18PM
DerAlbi wrote ...
Naaah.. stop inviting people to our oh so social dreamland.
Naaah.. stop inviting people to our oh so social dreamland.
I understand you perfectly, my post was not meant seriously. You are right, I do not pay much taxes, but I do not get benefits, either. I think the social system will fail inevitable and I do not have any interest in keeping it alive longer than needed - the earlier the collapse, the higher the chance of recovery.
@V2600: I did not understand your last post, even after reading what _Eugen_ wrote before. What does dividing the world have to do with it? Maybe something was lost in translation (I am using translation software, too).
I will respect your need for keeping your privacy.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 07:27PM
This is a joke. Evgen wrote that I would succeed in capturing the world)):
Eugen_ Tue Dec 11 2018, 09:19PM
"Damn it... I tried to outwit V2006, but you revealed my tricky plan....I'm completely defeated and don't know what to do:-(( . Now, he will really conquer the world I think."
V2006, Wed Dec 12 2018, 07:27PM
This is a joke. Evgen wrote that I would succeed in capturing the world)):
Eugen_ Tue Dec 11 2018, 09:19PM
"Damn it... I tried to outwit V2006, but you revealed my tricky plan....I'm completely defeated and don't know what to do:-(( . Now, he will really conquer the world I think."
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 12 2018, 09:17PM
What do you went to prison for ? Did you do 45° shots ?
DerAlbi, Wed Dec 12 2018, 09:17PM
What do you went to prison for ? Did you do 45° shots ?
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed Dec 12 2018, 09:28PM
I was slandered. If interested - I will write an email
V2006, Wed Dec 12 2018, 09:28PM
I was slandered. If interested - I will write an email
Re: A working model of a electromagnetic mass accelerator of high power
DerAlbi, Wed Dec 12 2018, 09:32PM
And i thought you violated the rules of physics.
But if true, that sucks.
DerAlbi, Wed Dec 12 2018, 09:32PM
And i thought you violated the rules of physics.
But if true, that sucks.
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Mon Dec 31 2018, 07:25PM
If someone does something - maybe someone needs it:
Coilgun vs TV TomTechTod
Coilgun vs door
High Power Full Gauss Gun VID 20181215 151535
V2006, Mon Dec 31 2018, 07:25PM
If someone does something - maybe someone needs it:
Coilgun vs TV TomTechTod
Coilgun vs door
High Power Full Gauss Gun VID 20181215 151535
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Sat May 04 2019, 04:46PM
Increase in caliber to 25 millimeters:
(playlists - 25 millimeters vs 22 millimeters)
V2006, Sat May 04 2019, 04:46PM
Increase in caliber to 25 millimeters:
(playlists - 25 millimeters vs 22 millimeters)
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Wed May 15 2019, 12:57PM
SUPER POWERFULL COILGUN Ultra Mega Destroyer
Caliber 22 millimeter strikes back
What is better caliber 22 millimeters or caliber 25 millimeters?
Testing continues - place your bets!
V2006, Wed May 15 2019, 12:57PM
SUPER POWERFULL COILGUN Ultra Mega Destroyer
Caliber 22 millimeter strikes back
What is better caliber 22 millimeters or caliber 25 millimeters?
Testing continues - place your bets!
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue May 28 2019, 08:30AM
Test caliber 25 millimeters
Ultra Powerfull COILGUN
(Scheme in the attached files)
V2006, Tue May 28 2019, 08:30AM
Test caliber 25 millimeters
Ultra Powerfull COILGUN
(Scheme in the attached files)
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Jun 28 2022, 10:28AM
New!
Apocalypse Coilgun, Fallout Coilgun - (COIL 2.5MM DIAMETER WIRE + 2x2.5 mm)
CAPACITORS 350 Volt, 34000 mkF (~ 2000 J)
BATTERIES 18650 + INVERTER 12/220 VOLTS
In the 21st century, if you dig in a landfill, you will find parts for assembling coil guns faster than parts for a crossbow or bow))
Look here:
Coilgun - it's weapon apocalypse?
V2006, Tue Jun 28 2022, 10:28AM
New!
Apocalypse Coilgun, Fallout Coilgun - (COIL 2.5MM DIAMETER WIRE + 2x2.5 mm)
CAPACITORS 350 Volt, 34000 mkF (~ 2000 J)
BATTERIES 18650 + INVERTER 12/220 VOLTS
In the 21st century, if you dig in a landfill, you will find parts for assembling coil guns faster than parts for a crossbow or bow))
Look here:
Coilgun - it's weapon apocalypse?
Re: A working model of a electromagnetic mass accelerator of high power
klugesmith, Fri Jul 01 2022, 05:07PM
Fancy looking gun you got there. :)
klugesmith, Fri Jul 01 2022, 05:07PM
Fancy looking gun you got there. :)
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Tue Jul 05 2022, 08:58AM
Of course. Apocalypse in the yard :))
V2006, Tue Jul 05 2022, 08:58AM
klugesmith wrote ...
Fancy looking gun you got there. :)
Fancy looking gun you got there. :)
Of course. Apocalypse in the yard :))
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Fri Mar 17 2023, 12:11PM
Hi evreone.
At present, the efficiency of acceleration of metal projectiles by a magnetic field is inferior to the efficiency of acceleration of metal projectiles due to the expansion of powder gases. And, it is possible that due to the imperfection of the technologies for manufacturing electricity storage devices, this situation will continue for a long time.
But! The above is true (primarily) for the acceleration of small-caliber projectiles (bullets used in individual small arms).
And to implement the acceleration of more massive projectiles (for example, shells of grenade launchers and rocket-propelled grenade launchers), a magnetic field can already be used with great efficiency today.
!The evolution of the bazooka in the third millennium
SILENT BAZOOKA (COILGUN - BAZOOKA).
Capacitor energy 2000 J, voltage 100 Volts.
In this experiment, instead of a cumulative or fragmentation grenade, a 0.87 inch (22 millimeters) steel scrap weighing 1.32 pounds (0.6 kilograms) was used as a projectile accelerated by a magnetic field.
*there are no factors unmasking the position of the shooter
V2006, Fri Mar 17 2023, 12:11PM
Hi evreone.
At present, the efficiency of acceleration of metal projectiles by a magnetic field is inferior to the efficiency of acceleration of metal projectiles due to the expansion of powder gases. And, it is possible that due to the imperfection of the technologies for manufacturing electricity storage devices, this situation will continue for a long time.
But! The above is true (primarily) for the acceleration of small-caliber projectiles (bullets used in individual small arms).
And to implement the acceleration of more massive projectiles (for example, shells of grenade launchers and rocket-propelled grenade launchers), a magnetic field can already be used with great efficiency today.
!The evolution of the bazooka in the third millennium
SILENT BAZOOKA (COILGUN - BAZOOKA).
Capacitor energy 2000 J, voltage 100 Volts.
In this experiment, instead of a cumulative or fragmentation grenade, a 0.87 inch (22 millimeters) steel scrap weighing 1.32 pounds (0.6 kilograms) was used as a projectile accelerated by a magnetic field.
*there are no factors unmasking the position of the shooter
Re: A working model of a electromagnetic mass accelerator of high power
V2006, Sun Aug 27 2023, 07:44AM
Hi everyone.
Breaking news! Coilgun of the future - artillery
Or is the artillery of the future a coilgun?
See also:
Ultra Home made Coilgun (caliber one inch, projectile weight two pounds)
Super Power full Coilgun (caliber 0.87 inch, projectile weight 1.32 pounds)
V2006, Sun Aug 27 2023, 07:44AM
Hi everyone.
Breaking news! Coilgun of the future - artillery
Or is the artillery of the future a coilgun?
See also:
Ultra Home made Coilgun (caliber one inch, projectile weight two pounds)
Super Power full Coilgun (caliber 0.87 inch, projectile weight 1.32 pounds)
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