Controlled jets from plasma rail guns can have peak densities in the 1013 to 1016 particles/m3 range, and velocities from 5 to 200 km/s, depending on device design configuration and operating parameters, and the upper limits may be higher. There is, however, no theoretical limit to barrel length or muzzle velocity, so if you want >10km/s you almost certainly want a coilgun. Some features of this site may not work without it. Efficiency will drop, parasitic heat ratio will rise, and it will, @RossPresser focused engine plume will do thst without coilgun magic, enginr or alike fusion reactor. Why did US v. Assange skip the court of appeal? To get the 1.2GJ we want for our 100km/s super-coilgun, we'd need the projectile to sweep out ~0.074m3, which for a 20mm projectile works out as a barrel that's 236m long. They are found as both ground emplacements and vehicle armaments. Finally, you should see that I've been looking at coilguns, not railguns here. your projectile now has a worse length-to-width ratio, which makes it less effective at penetrating the target's defences. Weighted sum of two random variables ranked by first order stochastic dominance. cheaper and more accurate than traditional gunpowder-based methods. This is actually a design for a true plasma weapon that fires a bolt of magnetically contained plasma. | Final Year Projects for Engineering Students "Using a massive electrical pulse rather than a chemical propellant, Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? But whether you store plasma inside a bullet or create it from parts of the bullet, you're not going to induce plasma for very long with a projectile. The experiment published in 1993 required the use of Kirtland Air Force Bases Shiva Star capacitor bank. Both are from Wikipedia. A chemical gun benefits from a longer barrel because the expanding gases have longer to do their thing. While currently, there are bans on orbital anti-ICBM weaponry, a MARAUDER-armed satellite could probably be an extremely effective Anti-ICBM weapon. | Contact Us, Copyright 2015-2018 Skyfi Education Labs Pvt. You'd have to get it to impact and either lightly penetrate or adhere to the surface to sustain the arc for any appreciable length of time, yes. This thesis discusses the design and characterization of a small coaxial plasma railgun intended to accelerate argon-helium plasma jets. An asynchronous coilgun relies on the projectile having a certain bunch of properties (you need to induce a current in it, to provide a magnet field for the main gun coils to push against), and a coilgun with superconducting projectiles needs the projectiles to remain superconducting, and so they have to stay below their critical temperature, etc. I WANT PLASMA WEAPONS!!!!! | Page 2 | SpaceBattles Picture of a historical neon discharge tube by Pslawinski. MARAUDER was a United States Air Force experiment to develop long-range plasma weapons. http://www.navweaps.com/Weapons/WNUS_Rail_Gun.php. A bigger projectile won't help you; you need one with a higher melting point, a larger heat capacity, and a more efficient coilgun to get the speeds you want. Learn more about Stack Overflow the company, and our products. Railgun has a charge time, but the projectile is very fast, so it's good for sniping. A round for standard infantry against nano-machined ceramics. How to make a plasma rail gun project - Skyfi Labs This page is not available in other languages. If it breaks out by accident, even if it destroys everything would you still call it a 'weapon' ? It's still an accelerating mass @RossPresser in general, because you can no longer rely on its intermolecular bonds to hold it together. Electrokinetic, Coil, Rail and Plasma Guns - amazing1.com But the OP specifically asked for "plasma contained in bullets". Learn more about Stack Overflow the company, and our products. If you continue to use this site, you consent to use all cookies. A 30mm projectile would let you fit your 100km/s gun into the original 100m length limit, but: You could use a fat, low-density sabot which drives a thin dense projectile, but the sabot represents parasitic weight that eats into the kinetic-energy budget of the narrow penetrator. The Navy even developed the ability to fire multiple-shot salvos but neither service has effectively fielded a weapon. Where the electromagnetic railgun fires a projectile at supersonic speeds of up to Mach 6, the Marauder would fire its one-meter diameter plasma rounds at 10,000 kilometers per second, or 3% of the speed of light. It seems like a really cool concept. Lets imagine your projectile now has a SHC of more like 1kJ/KgK, and a melting point of 3000K. This current generates a magnetic field which propels the plasma forward. Your message was posted to Facebook. Did you mean to type By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. Thank you! Peak line-integrated electron number densities of approximately 8 10. Because of this, these devices have applications in magnetic confinement fusion (MCF), magneto-inertial fusion (MIF), high energy density physics research (HEDP), laboratory astrophysics, and as a plasma propulsion engine for spacecraft. Existing ground-based inertial confinement fusion pellets implode at ~300km/s, and are accelerated over a distance of a few mm (and this is far from the lab speed record). What does 'They're at four. Please enable JavaScript if possible. Marauder, marauders, The Marauder, or The Marauders may refer to: Language links are at the top of the page across from the title. It is worth noting that at that speed the projectile exceeds orbital velocity at Low Earth Orbit. Would My Planets Blue Sun Kill Earth-Life? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Additionally, a complex triple joint seal may exist at the breech of the bore, which can often pose an extreme engineering challenge. As plasma railguns are an open area of research, the method of armature formation varies. @StarfishPrime obviously 100m barrel does not give 10 times faster than 10m barrel. Could a mass-proportional physical speed limit on projectiles "nerf" guns but not ruin archery? The official Subreddit for the Isaac Arthur YouTube channel. Plasma is not necessarily hard to confine; for example, those of us who are old enough or who have an interest in the history of computing remember the beautiful Nixie tubes which were used for the displays of computers and calculators made until the 1980s or so; Nixie tubes can be ruggedized, and some have flown in space aboard Soviet (and maybe also American) spacecraft. How many gs could a coilgun or railgun shell withstand? Say, if the primary problem of MARAUDER is that a plasma Torus will quickly become ineffective in the atmosphere, wouldn't that make a perfect weapon to put on a Satellite? Which was the first Sci-Fi story to predict obnoxious "robo calls"? How could dragons effectively use their wings as weapons in ground combat? Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Skyfi Labs helps students learn practical skills by building real-world projects. Your browser has JavaScript disabled. Basically, it looks like a donut. You might be able to hold it magnetically in the gun, but the instant it leaves the barrel you've now got rapidly cooling nothing. Plasmas are used in many everyday objects such as fluorescent lights, but some of the physics of plasmas are still not entirely understood. From Route 9 take Route 12 north for 6.4 miles, bringing you to east Westmoreland. That last issue was the real sticking point. Plasma just doesn't last very long outside of carefully controlled scenarios. The glowing light is emitted by plasma.). Accelerator electrode geometry and materials are also open areas of research. (10^10 gs, 1 s, etc). eject plasma at extremely high speeds (some plasma railguns are designed to fire projectiles, but testing has shown that solid armatures are more effective due to lower electrical resistances found in metals [4]). You are using an out of date browser. 24 Apr 2013 | Posted by Member 30298028. Dr. Coles died in the 1917 flu epidemic. The plasma railgun is a linear accelerator and plasma energy weapon which like a projectile railgun uses two long parallel electrodes to accelerate a sliding short armature. [duplicate], fire a self-contained ring of plasma in open air, Picture of a historical neon discharge tube, Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Railguns, sometimes called mass drivers, are kinetic energy weapons used extensively in the After Calamity Era. Naturally, in science fiction it would be very easy to explain that scientists discovered a more stable Toroidial configuration that lastswellhowever long you need it to last for the sake of the story. Terms of Use Spreading that same force over a larger distance I do not think adds anything to the equation acceleration wise. The intended use of this weapon is to have at least enough power to, The power requirement appears to be immense. In 1993, the Air Force Research Laboratory finally published an experiment in high-velocity plasma projectile weapons. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This was the project's biggest issue. Charitable Solicitation Disclosures Other than that, you're essentially constructing bullet-sized fluorescent tubes with some sort of attached supercapacitor that can provide ionization voltages for ~10s. It only takes a minute to sign up. What is a realistic maximum velocity of a coilgun round from a 100 m or 8,654 km/hr. To review your email preferences, please visit nature.org/emailpreferences. The Railgun - SP's Naval Forces Plasma railguns are categorized in two principle topologies, linear and coaxial where linear railguns consist of two flat plate electrodes separated by insulating spacers and accelerate sheet armatures and coaxial railguns accelerate toroidal plasma armatures using a hollow outer conductor and a central, concentric, inner conductor. Privacy Policy. Similar principles apply for plasma railguns. Railguns, Coilguns, Helical Railguns, and Helical Coil - Reddit You should add citations for some of the claims being made. The PPRO1 Plasma Thermal Gun utilizes the electrothermal energy obtained from vaporizing a metallic material, creating a pressure wave of sufficient magnitude to cause a projectile to accelerate to ballistic velocities. You can learn from experts, build working projects, showcase skills to the world and grab the best jobs. projectiles up to 125 miles at 7.5 times the speed of sound, is Quality group antiques shop with over 40 dealers conveniently located between Keene, NH and. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Generating points along line with specifying the origin of point generation in QGIS. Since the driver current through the armature is also moving through and normal to a self-generated magnetic field, the armature particles experience a Lorentz force, accelerating them down the length of the gun. What are the advantages of a coilgun v.s. The maximum force you can exert is the yield strength, which might be 1GPa; with this pressure over 100m, you get 100GJ/m^2 of energy transfer, and with a low-areal-density 1kg/m^2 bullet, about 400km/s. The Nature Conservancy is a nonprofit, tax-exempt charitable organization (tax identification number 53-0242652) under Section 501(c)(3) of the U.S. Internal Revenue Code. It is one of several United States Government efforts to develop plasma-based projectiles. Heat the projectile enough, and you have a diffuse and ever-expanding cloud of metal vapor, which is much less useful as an offensive weapon. How could I contain plasma for use in weapons? Obviously, your story, your hands to wave, but this stuff is important to remember if you want a hard-ish scifi setting. The railgun will be used for the study of plasma shocks in jet collisions. | Improving the copy in the close modal and post notices - 2023 edition, New blog post from our CEO Prashanth: Community is the future of AI. Your question/message has been sent to the race director. Little is known about it after 1993 because it swiftly Classified Status. Please complete the following survey to help us better understand your race experience. Flying Pig Antiques | Westmoreland NH - Facebook This is an instability in which the magnetic pressure front can out-run or "blow-by" the plasma armature due to the radial dependence of acceleration current density, drastically reducing device efficiency. You cannot get anything better unless you use magical materials, or magical ultra-efficient coilguns (and this example is already quite magical). Currently, only the 36-acre Warwick parcel is accessible which offers 1.5 miles of trails for enjoying the wildflowers and birds. Plasma railguns are electromagnetic accelerators used to produce controlled high velocity plasma jets. [citation needed]. Ruth, George, and Louise enjoyed hiking around their Butterfield Hill property. The plasma railgun is a linear accelerator and plasma energy weapon which like a projectile railgun uses two long parallel electrodes to accelerate a sliding short armature. To produce plasma-cutter-like effects on armored vehicles, which I assume is the goal, is slightly different, as the plasma in the above bullet won't last very long after the bullet impacts and the power source is (presumably) destroyed. | The United States is playing catch up in this area of weapons development at least it is in public. Yet in a constant high acceleration starship setting.. plasma railguns are best used for defense, since a swarm of high thrust constant acceleration missiles could in theory overwhelm it's firing solution. is capable of surviving speeds and acceleration up to 2 km/s. Scientific plasma railguns are typically operated in vacuum and not at air pressure. After armature formation, the plasmoid is then accelerated down the length of the railgun by a current pulse driven through one electrode, through the armature, and out the other electrode, creating a large magnetic field behind the armature. I'm not sure if this would be able to disable a tank with a single shot, but it is scalable assuming you have this kind of super-capacitive tech. On impact, the electrode is pushed back into the power supply and the carrier gas is released through the nozzle created on impact. You may experience issues registering or using other parts of the website. In 1964, the Warwick Preserve was the first New Hampshire property donated to The Nature Conservancy. Railgun, plasma, beam, what's their difference? Browse other questions tagged, 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. This may help a bit, but does impose some parasitic mass that will limit the muzzle velocity of the projectile (and makes calculation of the final velocity into some kind of horrid differential equation which I won't be solving for you). The problem is that everything is classified so we have no way to know if it is to hide a viable weapon or to keep the enemy guessing and thus spending money to find a way to counter it or create their own. a railgun? Which reverse polarity protection is better and why? Identify blue/translucent jelly-like animal on beach. It was named "MARAUDER" - or "magnetically accelerated ring to achieve ultrahigh directed energy and radiation.". A sabot round arrangement (or just crushing the plate into a pellet) will allow you to concentrate much of this energy in a penetrator. I'm interested to know what is the maximum realistic muzzle velocity of a coilgun with a 100m barrel length.
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