🔫 Coil gun - Bullet Speed - Energy Speed - Calculation
ฝัง
- เผยแพร่เมื่อ 1 มี.ค. 2018
- Hello friends!
In this video I'll show how you can measure the speed and energy of a bullet fired from a coil-gun.
I compiled the coilgun model according to the attached circuit.
The main parts of an electromagnetic gun are a storage capacitor, a coil and a projectile.
When the capacitor is discharged to the coil, a magnetic field arises that accelerates the projectile.
To measure the speed and energy of the bullet, I made several measurements that I entered into the calculator.
That's how I measured the distance from the coil to the target.
The core of the bullet I made of mild steel and attached to it the tip and stabilizer.
I weighed the bullet on the scale.
To measure the flight time of the bullet, I connected two sensors to the Audacity free program.
I put the inductive sensor near to the Gauss Gan coil, and the piezoelectric sensor attached to the target.
As a result, I got the value of the speed and energy of the bullet, as well as the efficiency of the gun.
Download Portable Calculator: oldoctober.com/pics/diy2/coilg...
Calculation of the coilgun parameters
\\Projectile speed (m/s)
L=3
t =0,102
V=L/t ≈ 29,4
\\
\\
\\Kinetic energy of the bullet (J)
m=0,0237
T=m*V^2/2 ≈ 10,3
\\
\\
\\ The energy of the capacitor (J)
C=0,018
U=170
E=C*U^2/2 = 260,100
\\
\\
\\Efficiency (%)
h=T*100/E ≈ 3,9
I wishing you successful projects and creative inspiration!
Русская версия: • Gauss Gun - Скорость п... - แนวปฏิบัติและการใช้ชีวิต
how genious! sensors using mic jack! I love that more than the coilgun.
I was so confused on why I saw audacity open but dang that just blew my mind
I use mic jack and Audacity as osciloscope.
I use this method to determine the distance to the lightning during a thunderstorm.
That has so many uses...
11년전 ㄷㄷ
This is the future! Can you do more on this subject? How's it work? How to build one? Different ideas?
Great job on the coil gun.
When I was in College, there was a someone who made a magnetic gun with 6 coils. As the projectile passed through one coil, a light sensor detected the projectile has left the coil and would energize the next and so on. Serious projectile speed
Excellent video. Very clever audacity trick.
NightHawkInLight dope to see you on small channels like this
NightHawkInLight new channel subscribe place and watching my video
Focak, get real. He's here to get ideas about ripping off someone else's videos. Wait and see. Same video theme on his channel soon.
@ I watched... I waited... he has not made a similar themed video yet. Is it not OK for big TH-camrs to support smaller TH-camrs??
@@callanbrain8579 I called him out on this one, so of course he wont do it now.
luv the cool jazz playing in the background
Sorry for my words. Your project was marvellous. That beep ruined my morning.
Nice project
you are amazing,with electromagnetic magnets, i am sure you left something out for us to figure out on our own good for you man.
GREAT SCOTT !
Maybe a "flux capacitor" would push it through the can.
@@fruitfulman3115 Ha,..Biff would steal the idea, then try to shoot Doc. Brown in the back with it.
I've been nursing an idea to build a rail gun, and a method to measure speed as a side project. Had a similar idea but was thinking to use light instead of sound.
Wow, an unseen design, very beautiful
Absolutely brilliant idea with these sensors!!! Thanks for sharing
Tv dj uv cnm
Very cool. Beautiful jazz to a korny tune, but love it.
Something like a Rail gun - all Dc powered , nice video thanks
Wow
A genius
, I really enjoyed watching this video
Congrats for taking some basic measurements. Most people who build EMGs and the like do not instrument them at all, and thus have no idea how well their project is actually performing.
You could also confirm your velocity measurement by calculation from the difference in height from the gun to where the projectile strikes, knowing how far the gun is from the target. It is the ballistics problem from elementary mechanics (physics.)
I did a variant with a T shirt cannon to find velocity. Air was the propellant, so a small magnet was placed inside the shirt, and 2 coils where placed along the barrel, 1 foot apart and connected in series. This was fed to audacity. The magnet crossing the center of the coils resulted in a pair of S curves. Time from the zero crossings was the travel time between coils. We were running just over 500 FPS.
Pretty cool. It's interesting to note that by conservation of energy the amount of kinetic energy attained by the projectile is slightly less than the kinetic energy of the hammer.
i often do these metric on my fecal matters, size of coil, time until hits the water, the amount of splash it does... very precise shiet
Great video!
great experiment!
He uses sound difference to calculate speed. Thats a pretty accurate and precise method.
Thank you so much this is awesome
While this is neat and fun, remember that your total force is divided by the mass of the projectile squared, and also remember that you should have your field as close to the projectile as possible, so perhaps try a smaller projectile, (BB?) and/or smaller barrel. Aside from this, excellent job.
What is the Capacitance of the capacitor ? Please! I am kind of a noob, is a 22k uF good enough ? Or more..
v=2*L/t - the length of the barrel inside coil , t- time of passing through coil, the second method of of calculation. Presented method is good , the projectile moves in uniform motion after leaving the barrel and the distance from coil is much greater than length of coil . Very good idea with Audacity implementing. In professional solutions capacitor voltage reaches several kV.
Great video! Always wondered how easy it would be to construct one rail gun at home with surplus junk. Real cool!
Regidor Delarosa not a rail gun chief
If you add more coils, it become mor powerful? Or you need more current?
И скок надо подать для того чтоб такой же массы запустить это копье по скоростью 900 м/c ?
Does the coil's magnetism continue to pull on the projectile, even after it starts moving away from the coil, acting like a brake. It seems like one needs a very fast discharge current spike that drops off fast to prevent a long magnetic pulse width.
you can have an infrared sensor to cut off the capacitor emf¿
Breathtakingly smart. This is goning to entirely transform my ideas for algorithmic coil timing optimization.
:)
There is a link for advanced users in the description.
Je l 'avais déjà imaginé 👍
Great work! I used to use Audacity to measure shutter speed of vintage film camera.
I hope that you use a photodiode for this.
Some twisted sabot railing could put a spin on that thing like rifling. Maybe add some stability.
note that turbulence/drag occurs, at the un-contoured step; where the stab begins.
Which is best optional name for coil gun
Inductor gun
Electromagnet gun
It's great how you measured the time with audacity
Question:
How does recoil work on this kind of construction? Would it be backwards & upwards like a handgun? Or would it be across the coils, transversely? Would the resulting recoil (if at all) be lesser than that from handgun ammunition of similar power?
Of course there is a recoil. Therefore, the coil was fixed in a vice. The force of action is equal to the force of reaction.
Cool experiment
How much velocity and energy it provided?
I wonder how much a barrel with some rifling would effect this
how much collusion energy would a bullet wit a strong magnetic pole mounted on the bullet head being shoot in to an opposite equally strong magnetic pole like a piece of equipment mean to use the collusion force of the fast moving bullet against a repelling magnetic pole to make a strong
Amazing video
Good video!
THANK YOU FOR KNOWLEDGE VERY VERY GOOD IDEA
Great video, please keep up the good work.
Excellent !
Awesome Sir.
That’s impressive.
Looks good
would be interesting to see how much kinetic energy was transferred based on different weights of projectile and amount of energy used to push it. or a work up of mass and energy to kinetic energy equation.
ksoltar new channel subscribe place and watching my video
The greater the mass is, the greater will be the kinetic energy, although the speed shall be squared to be able to the outcome of the same effect, the same amount of energy.
So.........if you wrapped a coil around a bicycle pump you could get a pump gun with a barrel on the end of the pump..........the piston would try to go all the way into the pump barrel with just a magnetic pulse and so compress the air as it goes in, no need to stop it at the end......the compressed air would fire the bullet down the barrel on the end.
What happens... It really strange...
It takes at the second time the exact place of the first impacts, three different impacts, exactly the sames only one different on all the canes shoot
Was it because of the capacitor, the torxs, or something like that ?
And did you made solénoïde more longer than larger ?
This could really modify the result for a same longer of cupper
Twenty years ago I did a presentation on how the future of infantry wepons would be very similar to this.
I used a 9v battery a plastic straw, copper wire and insulation tape and a 6" nail
I was at the time laughed at but I took it in good humour.
I still believe that the technology is sound and viable for various applications.
Thanks.
Railgun and other magnetic guns was a future weapons. EMP
Yeah. The nail just got smaller and smaller to the point with modern technology; your just shooting atoms and energy waves at folks. 😂
superb!!!! Thats so Awesome
buenisimo saludos desde venezuela
I tried something like this a long time ago. I used a led and photo diode to trigger the coil. I wanted to make several stages, but got side tracked.
how do you learn about this stuff? I have no idea what any of this is, and i feel if i were to make it, i’d end up getting the wrong component, or applying too much power and the capacitor will end up killing me or something. I really want to build stuff like this but i don’t have any idea on where to start.
Question, why do you need multiple stages in a coilgun for higher velocities? Why can't you simply make a single staged one where the coil is just very long, like a barrel?
Amazing!!!
the next tony stark. very clever and creative
Wow, ultimate ❤️👌🏻❤️
Nice video...The hard part is winding a perfect coil....
Damn that's really good grouping you at the same hole three different times are three different holes
Nice one
It is desirable to lower the weight of the bullet (aperture in bullet) to 8-10 grams in order to increase speed . Increasing the voltage has significant influence on energy in bullet according to formula: Energy= U*U*C/2
No.....the energy is contained in the mass of the bullet.....the heavier the bullet and the faster it goes the more hitting force it exerts on the target and the longer distance it travels.........if it was made out of paper or aluminium it wouldn't go vey far.
dont forget efficency home made coils make around 5% of it...
Robot voice and Christmas music in the background... Also you used a tape measure to measure the distance to the target... I saw you... You can't fool me
What?
hmm
i saw too,lol
Awesome
The music of La Capital, its amazing
Great video. Is the scematic you used still available? I'm trying to make a coilgun myself.
Sorry, I didn't understand the question?
Smecher frate :)))))))
Brilliant
Beeindruckend!
تحتاج لمحطة طاقة نووية تجرها معاك لكي تستطيع ان تضرب اوتوماتيك و كم جندي معاك فكم من طاقه تحتاج لتزود جيش كامل ؟
So good project maan
Colpo pulito,silenziato, il colpo con inquina, semplice ma letale. Ideale per la caccia
nice
Very cool but you really didn't need all those caps in parallel did you, the amperage is limited by only 170V on a relatively high resistance coil.
Many thanks for your fast reply Iuri, last question, whats the diameter of the copper wire that you use to make the coil? and C1 = 18000μF, but what voltage rating? I'm gonna try and make this myself..
As far as I can remember, the wire diameter is 1mm. The capacitor capacity is designed for a 110 Volt power supply. For a voltage of 220 Volts, the diagram is here: th-cam.com/video/rJfk6FLiUVo/w-d-xo.html
The ultimate stress can be calculated using the formula:
_Umax=U*1.05*2^0.5=110*1.05*2^0.5 = 163(V)_
The closest rating will probably be 200V.
Wow, you’re on our side ... right? 👍
Do you have the rule of how to build a coil? Like which is more efficient if i use thick wire or thin wire and the effect of the layers
Thanks in advance
Usually they use the FEMM program and scripts for it.
Google it: *femm script gauss gun*
And look for a description in your language.
this dude be a real life mumbo jumbo
Very very nice
If nothing else, this video taught me how to measure speed in a new and very interesting way!
Really clever you show a lot of ability. In real life these will be designed not for shooting at tins, but at tin cans; the old slang for destroyers (warships)
Отличный. Канал. Было очень интересно смотреть ! Лайк и подписка!
"Зеленые оливки, начиненные перцем"? Вот это поворот!
А программка для расчетов - российская! ) - Калькулятор - блокнот - NumLock Calculator
dwg.ru/dnl/14071
Sangat cepat tembakan panah tersebut,bagai mana jika jarak tembakan diperpanjang dengan menggunakan coil gun energy speed
Why the efficiency is so low? Is that because of the short life of the capacitors? Or is it because its so long that when the projectile passes the coil, the magnectic field pushes it back? What we could do to improve it? (sorry for bad english)
You cannot get high efficiency with a single coil. You need to use 8-10 coils, which will turn on in turn.
Seems like it would be a lot easier just to use a ballistic chronograph to get the projectile velocity, then calculate the kinetic energy based on the projectile's weight. Of course, given the very low velocity of your coilgun, you could probably get by with using an airsoft chrono rather than one intended for use with actual firearms, as the low velocity of your gun probably wouldn't register on one meant for real guns.
But of course, this way does seem more interesting, and it definitely allows you to learn more about physics than taking a shortcut witha chrono.
most completed video i ever seen!! amazing dude.. and nice intro, witch program are you used?
very clever. good way to make measurements and calculate. good ideas. inductive sensor to measure the start time and then especially how to measure the time of impact with the microphone. What language is that? do you use 120VAC in your country? I thought all of Europe is 230VAC. thanks for sharing.
In this circuit, a voltage of 220 Volts: th-cam.com/video/rJfk6FLiUVo/w-d-xo.html
language is Russian BTW... )))
John Conrad new channel subscribe place and watching my video
Well. Speed reacrion. 👍😎👏 🙀 privet brothers.
How far can it shoot?
I,m feeling a door bell prank is comming up!
i have a question
how do you controlled the bullet direction ?
or how did you ensure that the bullet will run in the right direction not in the opposite direction ?
The direction of flight of the bullet depends on the initial position of the bullet relative to the coil.
He is a real engineer
Muito bom o peojeto
electromagnetic with good work
nice info
Could you send me the plans or croquis with data. Pls?