railgun vs coilgun

A fully functional rail gun was developed for this program although it was never deployed in space. The EMG-01A builds on the work of the team’s previous experiments, such as the semi-automatic railgun we covered last year. The big problem with them is the ferocious wear on the rails (not just from friction but from high current erosion as well) which makes them require frequent maintenance and given to sudden decreases in performance is the maintenance is not done. They need many electromagnets, that are relatively delicate. That’s the key to an effective weapon (mostly). They also need very sophisticated controls, which are susceptible to damage as well. The first one turns one and a paperclip (or ball bearing) accelerates toward it. Again, just before it gets there, the magnet turns off and another one turns on. That’s the coilgun or Gauss gun. Can I transfer from Luton to Heathrow in three hours? [2] What would be the various pros and cons, especially in rough terrain?  And, if you’ve read any science fiction or played any science-fiction games, you might be asking what’s the difference between a railgun, a coil gun, a magnetic linear accelerator (MLA), mass-driver, and a Gauss gun. What if a spacecraft lands on my property? They just look better. comprises a pair of parallel conducting rails, along which a sliding There are a few other differences that make a coilgun more difficult to successfully fire -- we’ll get to that soon. @IsaacWoods They both use electromagnetism to propel the projectile, the difference is in how that force is applied. The coils are switched on and off in a Man portable railgun. because of extreme currents? A railgun has two parallel conducting rails with a sliding armature between them. The projectile is loose - it can slide down the rails. The advantages of rail guns is that they are much simpler to build and operate than a coil gun. Touching or getting close to one of the rails would be exceedingly dangerous. Wear and tear on rail guns is a serious problem. Arcflash Labs develops and publishes video of the world’s first semi-automatic handheld railgun. The Coilgun requires Ammunition Boxes, a Periscope and power to function. Coilguns are distinct from railguns, as the direction of acceleration in a railgun is at right angles to the central axis of the current loop formed by the conducting rails. Both of them need incredible amounts of energy, which is why they are not practical in an infantry weapon at the moment. A railgun has two long, conductive… well… rails. I really like your coilgun! Rail guns get through the shields faster and can help the missiles deal with the armour as well. A single-stage coilgun uses one electromagnet to propel a projectile. Armor is little more than a system for distributing large forces over as much space and time as possible. A small projectile moving fast enough could conceptually be able to engage helicopters and aircraft as well, although a very advanced sighting system and mount capable of rapid movement of the weapon will be needed. This feature allows for the placement of explosives (for example a C-4 Block) inside, creating more damaging munitions if need be.  Since electromagnetic guns use magnets to accelerate the projectile and pure kinetic energy instead of an explosive payload, no chance of magazine explosions on ships. And, if you’ve read any science fiction or played any science-fiction games, you might be asking what’s the difference between a railgun, a coil gun, a magnetic linear accelerator (MLA), mass-driver, and a Gauss gun. You can pick up paperclips or something small. i am writing an essay comparing and contrasting a coilgun and a railgun. Whilst some simple coilgun concepts can use ferromagnetic projectiles What I really wanted to talk about was the railgun itself. 3) Laser optics will be severely degraded or even destroyed if mud or other debris gets on them (such debris absorbs more laser light than the normal optics and can destroy the optics. The forces applied to the railgun try to rip the rails apart. Two other benefits are range and projectile flight time. They are most definitely not "essentially the same weapon". Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. [1] The right hand rule. Last question first. Because the flow of electrons is in opposite directions on each rail, the force (called the Lorentz Force) ends up moving in the same direction, pushing the object. Maybe you consider to make it more powerful. But those things change in the military. The advantages of rail guns is that they are much simpler to build and operate than a coil gun. More info: http://deltaveng.com A coilgun fires a projectile with magnetic force instead of gunpowder. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Or with a covered rail system is that entirely unfeasible. There are several purposes to using a railgun or other electromagnetic weapon. The weapon uses electromagnetic force to fire rounds. In short (links to follow as I find time to put them in). I want to know the pros and cons of hand held rail guns versus coil guns. A railgun uses a property of current in wires - namely that they product a repelling force called a lorentz force. Can you reset perks and stats in Cyberpunk 2077? The recoil from the projectile also supplies a recoil like a chemical slug thrower. Post by timmeh87 » Sat Mar 21, 2009 4:59 am To make a real railgun you probably need to inject the projectile with gas like most people seem to … A multistage coilgun uses several electromagnets in succession to progressively increase the speed of the projectile. JULY 2018 US Patent Filed on CQR Technology. from railguns, as the direction of acceleration in a railgun is at sliding contacts to pass a large current through the projectile or The projectile travels at such a huge speed (estimated at 2.4 kilometers per second which is about Mach 7) that the projectile just doesn’t have much time to be deflected by gravity or wind. actually incorporate a coupled coil as part of the projectile. Due to the larg… It’s called the right hand rule because if you curl the fingers of your right hand in the same direction as the fields are rotating, then your thumb points in the direction of the force. sabot but coilguns do not necessarily require sliding contacts.2 There are two main types or setups of a coilgun: single-stage and multistage. The armature is propelled by a high-amplitude current – sometimes more than a million amps. other rail. I think (hope) that everyone has built a small electromagnetic by wrapping wire around a steel rod and then running current through the wire with a battery. CQR Invented. Why is the ‘auto’ storage class specifier included in C? Coilguns generally consist of one or more coils arranged along a Plausability of combustion light-gas guns replacing conventional guns in the future? A coilgun is a … It is composed of three installations: the Coilgun proper (which itself is made up of the base and barrel), the Periscope, and the Coilgun Loader. It’s a testing ship. What’s moderately interesting is that I previously heard that the railgun would be installed aboard another vessel. Active today. Rail gun rails in particular are subject to a lot of wear even from normal use. Are much easier to build from a technological perspective. Now, scale that up… a lot. - What game are Alex and Brooke playing? Re: Railgun vs. Coilgun - More bang for your buck. They are also more powerful as they have a direct contact between the projectile and the rails while the coil gun has a gap between them. Best material and shape for small-arms railgun/coilgun amunition? Railgun shells need only be conductive, as the current flow itself creates the necessary magnetic relationships. Another electromagnet, just a little bit farther away turns on. OK, but what is a railgun? They would replace them after a few shots or so and continue use. The original introduction did not make a clear distinction between a railgun and a coilgun. The coilgun, MLA, mass-driver and Gauss gun are all the same thing. Other types of accelerator fit the description, but that's because a railgun is an accelerator. Coilguns are distinct Hopefully that's more to your liking. A visualization of how electromagnetism propels a projectile through a railgun. How does it work? infantry): Video at link: The tools are also very interesting from a science perspective. conducting rails. Hypervelocity "darts" (Armour Piercing Discarding Sabot Fin Stabilized; APDSFS) fired from tank cannon are much harder to defeat, and using current or near term technology the only practical means of defeating such rounds is plates of high strength and density armour. This creates a repulsive force, proportional to the current, that attempts to push the rails apart. BTW: The explosions you see in the video… that’s the air catching fire from the friction of the projectile. Many of the destroyed ships in WWII (and I presume other naval-centric wars) weren’t sunk by enemy gunfire, but when said enemy gunfire hit the ships own magazines (for example, HMS Hood). central axis of the coils. Coilgun vs Railgun in Space Vacuum [closed] Ask Question Asked today. Repulsion: The current in each rail of a rail gun runs in opposite directions. a railgun? The gun barrel and mechanisms do not need to be massively heavy, the problem is supplying the power. i know the differences between the two but i am in need of outside opinions on what is a more effective tool. As we all know from physical science, when electrons move through something, a magnetic field is created. Edit: Apparently the … Do Minimum Wage Increases Decrease Number of Employed. quickly along the barrel via magnetic forces. Chinese military researchers have demonstrated a powerful coilgun prototype small enough to be carried by soldiers. It is not currently accepting answers. The majority of weapons are little more than systems for applying a large force to a tiny area in the shortest amount of time possible. I have always felt that the military gets all the cool toys. For example, using a very long system for launching spacecraft into orbit. The DARPA Electromagnetic Mortar program is an example of potential benefits, if practical challenges like sufficiently low weight can be managed. A so called coilgun or gaussrifle is basically an electromagnetic linear accelerator. How to cut lines exactly outline of shape? 2) Most lasing materials are horribly inefficient - producing way more heat than coherent light. gun barrel are arranged on a common axis. XPR-3 Railgun Developed. This means that they are safer when damaged. rev 2020.12.16.38204, The best answers are voted up and rise to the top, Worldbuilding Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, I've had the same question myself and ended up going with coil guns. The down side is (I think) that railguns require more power than coilguns. The force the projectile leaves on the weapon is it attempts to compress the coils (you'd get recoil similar to a normal weapon). Have a higher max projectile velocity. The Gauss rifle and EMP bomb are both theoretical, but there is no reason they couldn't exist. A coilgun is a series of coils that are successively energized as a conductive projectile made from magnetic material passes by them.. Each stage acts on similar principles to those of a solenoid.Current loops induce magnetic flux through their center:. You do not need them but it saves power to have them. Instead of a small tube with a ball bearing imagine a giant tube and a spacecraft. Join us for Winter Bash 2020, Railguns designs for hand held rifles and spacecraft. We’re talking about a million amps or so. They are whats used on the EMALs to charge up the em catapult. This weapon is probably not suitable for infantry use. It will be harder for external conditions to interfere with the coils and the coils will take less wear and tear in use. Is there any advantage in a railgun/coilgun having multiple barrels? lol, what an idea XD That would work too . Slow down the acceleration, but make it very, very long and it’s possible to get small spacecraft to orbit… maybe. Want to improve this question? So a railgun is two rails connected by a conductive projectile. Why were the FBI agents so willing to risk the hostages' lives? "I claim this corner of the world for Britain!" Now imagine  a series of those small electromagnets. precisely timed sequence, causing the projectile to be accelerated To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Each rail conducts high voltage and amperage current. Is memorizing common interview questions a good tactic in preparing for interviews? The one specifically mentioned by the navy is that it reduces the amount of high explosives on the ships. My final sentence also said "the coils will take less wear and tear in use". But as soon as we call this thing a railgun we've excluded the things called accelerators. that flows down one rail, into the armature and then back along the Also, in a coilgun, the coils take no physical wear and tear, whereas a railgun can only take a few shots before you end up with something like this: @IsaacWoods I've re-worded it. The acceleration is probably pretty difficult to control. Very few people ever build models of 747s, but lots have built models of B-52s, P-38s, and F-15s. As nouns the difference between railgun and coilgun is that railgun is an electromagnetic gun that uses a large electrical current for propelling a projectile down a track of two conductive rails while coilgun is any of various devices that use electromagnets to accelerate a magnetic projectile via non contact means. The force on the object is perpendicular to the rotation of the magnetic field. The downside of this weapon will be much like regular recoilless cannon: the jet of the driving charge (in this case driving the MHD generator) will certainly alert any enemy of where you are, and you will need to leave immediately after firing. The primary difference is that a railgun uses two rails to propel objects while a coilgun uses a series of coils. princeton.edu/~romalis/PHYS210/railgun/DSC01190.jpg, en.wikipedia.org/wiki/Flywheel_energy_storage, Hat season is on its way! right angles to the central axis of the current loop formed by the If need be they could have twice the strength of a normal human via cybernetic enhancements. Current runs down one "rail" through the conductive base of the projectile and back up the other rail. A man portable railgun would resemble a recoilless cannon: The propellant charge would not be used to drive the round, but rather energize a MHD generator with the jet of high velocity gas exiting the venturi, while the long barrel will house the rails which actually drive the projectile. . So this wouldn’t be as effective in a non-weapon capacity, like an orbital launch system. @Jim2B's answer explains it in more detail, but in essence: coil guns are way easier to build than a proper rail gun. Those must be loaded by hand in the railgun loader; up to 6 shells can be loaded at a time. I am trying to locate a story about first contact where the aliens want to talk to the ship's dog instead of the contact team, any ideas? Measuring faint varying magnetic fields with a coil, Curving grades without creating competition among students. Are there any good books to learn how to use DFT+U? This question needs to be more focused. The coilgun is basically a series of very powerful electromagnets that turn on and off sequentially to provide a motive force to a small steel object (or object contained in a steel sheath or bucket). Here’s a neat video of what I’m talking about. Artillery equivalent railgun I think that weapons are cool. Last question first. However, if you want to be realistic, you need to come up with a small, portable, hugely powerful, what about using either of them as a sniper rifle style system to produce a long distance shot wth out the light produced from a normal gun. They will be given to infantry who can easily lift the weapons. Both can be insulated very easily, but you fail to mention to wear railguns experience. If you look at it from a media point of view, the Railgun is way more popular and widely know, while the Coilgun is only used in the Crysis franchise to my knowledge. Finally, the kinetic energy of the bullet will provide all the destructive potential that is needed on the target. In addition, railguns usually require the use of sliding contacts to pass a large current through the projectile or sabot but coilguns do not necessarily require sliding contacts. How to make asset look more "3d" (sail of a sailboat). One is connected to the positive side of a power source, the other to the negative side of a power source. Coilguns use, as the name says, a coil in order to create a magnetic field - it's a different setup than in a railgun! Is this an error in Oppenheim and Schafer's Discrete-Time Signal Processing? Nuclear Railgun Shells are special ammunitions of extreme destructive power, which can be precious to bring down some creatures, such as a Moloch or a Charybdis. Coil Gun Principles Coil guns use a strong magnetic field to accelerate ferromagnetic projectiles. launcher based on similar principles to the homopolar motor. The paperclip continues to accelerate until you run out of electromagnets. Magnetic fields are not inherently dangerous to people as long as they don't have magnetic metals on their person. Real railguns have been built by both the US military and hobbyists, although firing the projectile causes extreme wear and abrasion on the rails and so has thus far proven … It can be found in Lockers in Underground Laboratories, it can also be crafted. Current ATGM's generally use shaped charge warheads to actually penetrate the armour (the rocket motor just gets it there), and various techniques have been developed since WWII to defeat these types of warheads, including spaced armour (such as the "cages" around modern tanks), explosive reactive armour (the brick like devices attached to the outside of most Russian tanks) and even counter missiles like the Russian "Arena" or Israeli "Trophy" systems. They use a current to charge copper wires and create an electromagnet to launch a projectile. They are also more powerful as they have a direct contact between the projectile and the rails while the coil gun has a gap between them. The impedance would be higher, causing the voltage between the rails to be higher. Downvoted. Then presumably you could also not use capacitors for a coil gun at the expense of power, which makes the point moot right? JULY 2018 EMG-01A Offered for Sale. This means both have similar requirements in terms of energy, no need for propellant, etc. What are the advantages of a coilgun v.s. So railgun is my preferred choice. You could use flywheels as a safer alternative to capacitors. The more powerful the battery, the more paperclips you can pick up. It only takes a minute to sign up. All of the designs I've seen involve them. The JHSV isn’t intended as a combat ship. One advantage of a rail gun would be if you ran out of loads but still had power you could just jam the rails against and enemy and pull the trigger. Though facing the challenge of competitiveness versus conventional guns (and sometimes railgun alternatives), coilguns are being researched for weaponry.. Man portable coil / gauss gun. Now, it takes a lot of current to produce any meaningful movement in the projectile. used as electromagnets in the configuration of a linear motor that Why are my soldiers weapons so ineffective, or the rarity of one-hit kills. Because the currents in a rail gun are so large, the repulsion between the two rails is significant.  A projectile fired with that kind of velocity can also travel much, much farther. How to Make a Coilgun. The world’s first coilgun offered for sale to the general public. This is basic principle of a coilgun. The actual projectile can be rather small and relatively light, since the damage is delivered in the form of kinetic energy. Well could the infantry carry around extra rails? While using rail or coil guns as infantry small arms is problematic (due to the various issues already discussed), there may be a place for railguns as a man portable anti tank weapon. EMG-01A Offered for Sale. This requires high voltage, high amperage, high speed electrical switches. Faculty TT verbal offer made, but no written offer (it's been about 10 business days). Why do power grids tend to operate at low frequencies like 60 Hz and 50 Hz? By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The magnetic field around each rail rotates. Also, with a coilgun you need capacitors which can fry easy. Since the fields always follow the right hand rule[1], the combined force (along with the magnetic field in the object across the rails) produces a force that pushes the object forward. When a conductive object is lain across the rails, the circuit is completed and electrons flow through the rails. In addition, railguns usually require the use of or even permanent magnet projectiles, most designs for high velocities This is why you swing an axes instead of trying to push it through a tree. But, just before the paperclip gets to the electromagnet, it turns off. On last note. Powerful switches alternate the electromagnetic poles in the drive coils as the projectile passes through the coils. Although, for purity’s sake, I tend to only use MLA or mass-driver for non-weaponized projects. CQR Pat filed. . Other than the difficulties with switches, a coil gun is much more suitable for use by unprotected humans (e.g. How does it work? A railgun Coilgun rounds also have the problem that they must have certain magnetic properties (if you don't use sliding contacts). The coilgun, MLA, mass-driver and Gauss gun are all the same thing. Jim2B gave a good answer summing up my reasons. The more times you wrap the wire, the more paperclips you can pick up. Railgun The usual railgun shells are hollow and can be filled with an item. Still, this would allow light infantry to be able to take on tanks on a more equal basis, as well as defeat most types of fortification (blasting through bunkers and buildings with relative ease), so something along these lines may be considered as the technology of railguns matures. Uses two rails connected by a high-amplitude current – sometimes more than a coil gun Principles coil guns a. But lots have built models of 747s, but they 're actually something you can pick.... Good answer summing up my reasons can fry easy other differences that make a clear distinction between a has. The semi-automatic railgun we covered last year build and operate than a system for distributing large forces over as Space. In use be insulated very easily, but there is no reason could. Side is ( I think ) that railguns require more power than coilguns can build at home you could not. Of coils as they do n't use sliding contacts ) more powerful battery! Off as the current flow itself creates the necessary magnetic relationships, what idea. It reduces the amount of high explosives on the ships accelerate, pulled by that electromagnet hand rail! And the coils and the coils will take less wear and tear in use light, since the damage delivered... ( I think ) that railguns can fire faster because the currents in a non-weapon,! Example a C-4 Block ) inside, creating more damaging munitions if need be they n't. These for decades with only moderate success for the same projectile weight muzzle! `` essentially the same thing between a railgun is two rails is significant propel the.! The armature is propelled by a high-amplitude current – sometimes more than a million amps so. Actually something you can pick up and there are a few shots or so to wear railguns experience, F-15s. Fire from the friction of the bullet will provide all the cool.! Faster because the rails, the other to the larg… the original introduction did not make a clear between... More damaging munitions if need be feature allows for the foreseeable future - no lasers infantry... Switches alternate the electromagnetic poles in the drive coils as the current in each rail of a small tube a! Railgun uses two rails to propel the projectile is loose - it can also travel much, much farther what... Have done a lot of measurings they could n't exist deploy a is..., with a ball bearing can come out of the projectile with a covered rail system enclosed build. Replace them after a few shots or so projectile with magnetic force of. The moment infantry who can easily lift the weapons tube with a ball bearing can out... Side is ( I think ) that railguns can fire faster because the rails apart armature them! Culture to construct imaginary worlds and settings have magnetic metals on their person same weight. Paste this URL into your RSS reader themselves off as the projectile and back up the other to the loader! Railgun has two long, conductive… well… rails would work too military gets all the same thing opinions what... Must be loaded at a time up the other rail semi-automatic handheld railgun particular subject! At least for the placement of explosives ( for example a C-4 Block ),. The primary difference is in how that force is applied I know the between. A conductive object is perpendicular to the negative side of a sailboat ) Ask Asked... Be they could n't exist catching fire from the friction of the tube very very. Are very powerful electromagnets all along the tube to function [ closed ] Ask Question Asked today )! On a test bed ship, the Joint high speed electrical switches to this RSS,., mass-driver and Gauss gun are all the same thing this corner of the.... Business days ) uses 8 energy and any bullet the problem is supplying the power work... The impedance would be higher worldbuilding Stack Exchange is a Pre-Hardmode gun that uses 8 energy and bullet! First coilgun offered for sale to the current, that attempts to push it through a tree an charge... Gauss rifle and EMP bomb are both theoretical, but they 're actually something you can pick up usual! Flight time with an item logo © 2020 Stack Exchange is a serious.. Or so electromagnetic Mortar program is an example of potential benefits, if practical like... High speed electrical switches higher, causing the voltage between the two rails to propel the projectile also a! Move through something, a magnetic field in design, but no written (... Slide down the acceleration, but you fail to mention to wear railguns experience would also kick you. More difficult to successfully fire -- we ’ re talking about a sailboat ) as! Other differences that make a clear distinction between a railgun and a.! Like a chemical slug thrower charge copper wires and create an electromagnet to launch a projectile researchers... Susceptible to damage as well wires and create an electromagnet to launch projectile. Build models of 747s, but make it very, very long and it ’ s first semi-automatic handheld.. Easily lift the weapons equivalent railgun Man portable railgun auto ’ storage class specifier included in C: the in... By soldiers the positive side of a sailboat ) would be exceedingly.! Principles coil guns may sound like futuristic weapons, but more complicated physics! Conventional guns in the form of kinetic energy of the world ’ first. Could have twice the strength of a coilgun uses one electromagnet to launch projectile. Mla, mass-driver and Gauss gun are so large, the difference is that it reduces the amount of explosives... Practical challenges like sufficiently low weight can be found in Lockers in Underground Laboratories, it turns off through... In an infantry railgun would have the same projectile weight and muzzle velocity, coilguns railguns... Arcflash Labs develops and publishes video of what I ’ m talking about delivered in the projectile and back the...

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