project marauder plasma railgunsproject marauder plasma railguns

Lets say that our coilgun is 99% efficient, and of the 1% of the energy that it wastes, half of it goes into the projectile. There were some errors in the barrel length calculation for the earlier draft of this answer, which have since been corrected. The best answers are voted up and rise to the top, Not the answer you're looking for? How are engines numbered on Starship and Super Heavy? 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. However, in recent years, new research has shown promise in extending the lifespan of these Toroids. When Ruth died in 1973, Louise scattered her ashes on the preserve. The post Marauder was the US militarys first plasma railgun and it might have worked appeared first on We Are The Mighty. Both are from Wikipedia. Why does Acts not mention the deaths of Peter and Paul? Take a left onto South Village Road, which you will follow for 3.7 miles before arriving in the village of Westmoreland. For a better experience, please enable JavaScript in your browser before proceeding. Scientific plasma railguns are typically operated in vacuum and not at air pressure. Fire rate will therefore be limited, and ultimate velocity will also be limited by your ability to a) quench your coils fast enough and b) cool them fast enough afterwards to fire the gun again. These weapons programs even look to be losing steam, especially when compared to the development of hypersonic missile technology. Your question/message has been sent to the race director. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Mostly realistic weapons to assault a planet from orbit. Notice that the barrel length is much shorter than the dreadnaughts of WW1 fame. Learn more about Stack Overflow the company, and our products. Build using online tutorials. What are your thoughts on Project MARAUDER? http://www.navweaps.com/Weapons/WNUS_Rail_Gun.php. Resources for Engineering Students | The relevant principle is: use a plasma to push on your bullet. Scan this QR code to download the app now. The author argues that to realize the hypervelocity potential of plasma armature railguns, restrike must be eliminated. Would this system work better in space? Large boulders litter the forest floor below the rocky ridges creating habitat for snakes, porcupines and bobcats. No hunting on the southern portion of the preserve (Warwick parcel). |. Coaxial accelerators use various techniques to mitigate this instability. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If we magically start it off at 0K, we can see that it can absorb no more than 180kJ. You can now heat it up by more like 3MJ/kg instead of 900kJ/kg. Requesting that Material be Amended or Removed. Kinda important factors You might want to research fusion reactors. Learn more about Stack Overflow the company, and our products. They are of value because they produce muzzle velocities of up to several hundreds of kilometers per second. For a rough idea, you can use Luke Campbell's approximation for coilgun performance, which basically imagines the gun as a tube of energy in the form of the magnetic field, which is swept out by a projectile that turns it into kinetic energy. And everybody likes the alluring neon lights which enliven nights and hide the stars. Which means that I am in the potentially unique situation of being able to tell you that yes, they went out of their way to name it Marauder because it took us far too long to find a word that worked, we spent two hours fiddling with syllables to get stuff that fit (Direct Energy Railgun gives der). Similar principles apply for plasma railguns. Wouldn't this approach only create plasma for a tiny fraction of a second? What're the weight and dimensions of the slug? Otherwise, you will not be able to register for races or use other functionality of the website. [citation needed], High velocity jets of controllable density and temperature allow astrophysical phenomena such as solar wind, galactic jets, solar events and astrophysical plasma to be partially simulated in the laboratory and measured directly, in addition to astronomic and satellite observations. What are the advantages of running a power tool on 240 V vs 120 V? Simply put, its not exactly mobile enough to use in ground combat. A chemical gun benefits from a longer barrel because the expanding gases have longer to do their thing. Can I use my Coinbase address to receive bitcoin? However, it is rumored to be a coil gun, not a rail gun. Ultimately, the limit is going to be keeping the bullet solid as you push on it. 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. It's a very slow particle beam in practice with ~8 millimeters of range in air if proton and ~10 if alpha particle. This means that railguns have scaling problems you can't shoot them too much before the rails need replacing, and the rail damage goes up with muzzle velocity so you may find a railgun that works just fine at 3km/s (at least for a little while) will be wrecked at 10km/s and explode violently at 30km/s. Come enjoy the rolling countryside 4 mile course, we are now celebrating our 20th annual event! @apaul34208 It depends on how the bullet is constructed and how "super" your supercapacitor is. We'll give your coilgun an efficiency of 99.9%, and half the wastage goes to heating up the projectile again. Renewed interest has arisen in plasma armatures as evidenced by two papers presented at the 2008 EML Symposium. With a 10 meter barrel, we get about 2500 meters per second. Have bigger trouble hitting small target. This creates your localized heat for as long as the arc can be maintained, greatly weakening or destroying the material at the point of impact. That said, this would require a much bigger power source, that would sustain for a longer acceleration. The trails are rugged and moderately steep, ascending from 480 feet of elevation to 900 feet in just the first third of a mile. The Navy spent more than a . Basically, the Marauder was everything an army could possibly hope for in the area of field artillery: an ultra-fast, super-destructive gun whose ammunition was only limited to how much power the army could produce for it. Linear railguns consist of two flat plate electrodes separated by insulating spacers and accelerate sheet armatures. If you believe that any material in VTechWorks should be removed, please see our policy and procedure for Non-superconducting projectiles will be subject to more heating!). It is generally believed that MARAUDER was eventually scrapped. 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. Why don't we use the 7805 for car phone chargers? Like this page and invite your friends on Facebook. Mount Vernon High School (Fortville, Indiana), https://en.wikipedia.org/w/index.php?title=Marauder&oldid=1131569989, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0, "The Marauders", a 1983 song by Tears for Fears, B-side to ", Marauders, synthetic creatures derived from, This page was last edited on 4 January 2023, at 19:22. But the muzzle velocity is sqrt(2 * barrelLength * acceleration). Rare plants found here are the broad beech fern, a beautiful purple and white orchid called the showy orchis, spotted wintergreen, and long-spurred violet. It is worth noting that at that speed the projectile exceeds orbital velocity at Low Earth Orbit. The best answers are voted up and rise to the top, Not the answer you're looking for? BATH, Maine The U.S. Navy has pulled the plug, for now, on a futuristic weapon that fires projectiles at up to seven times the speed of sound using electricity. MARAUDER was a United States Air Force experiment to develop long-range plasma weapons. This answer (given technological development to improve power efficiency) meets all but two of your requirementsbut (potentially) bypasses their necessity. Please complete the following survey to help us better understand your race experience. The Bulldog 4 is an annual fun run that also serves as a fundraiser for the Westmoreland PTA. Enter your email address and we will send you instructions to reset your password if there is an account for that email. Is there such a thing as "right to be heard" by the authorities? 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. How could you make a cat's tail prehensile enough to use weapons? In either design, a plasma armature is formed at the breech. In a plasma railgun, a short pulse of current is passed through a plasma located between two parallel electrodes, or "rails". Description. Plasma railguns are being evaluated as a possible method of implosion linear formation for fusion. What is this brick with a round back and a stud on the side used for? Not to mention the fact that all the precision engineering in a plasma torch would be thrown out the window. The near-term solution is some form of circuit arrangement which eliminates current . In private, the U.S. military might be way ahead of Russia in the area of ultra-fast projectiles, but well never know because most of its early developments have been classified. The plasma is confined between the bullet and the magnetic field pushing on it. Little is known about it after 1993 because it swiftly Classified Status. | Why is it shorter than a normal address? 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]). Basically, it looks like a donut. 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. JavaScript is disabled. Could a mass-proportional physical speed limit on projectiles "nerf" guns but not ruin archery? Which was the first Sci-Fi story to predict obnoxious "robo calls"? Or can it simply generate plasma on discharge? the US Office of Naval Research says. Dr. Coles died in the 1917 flu epidemic. How could dragons effectively use their wings as weapons in ground combat? Plasma requires constant electrical energy input to be maintained, so storing your plasma bullets is the biggest constraint, barring some sort of Infinite Power Supply. ? It's not them. Which was the first Sci-Fi story to predict obnoxious "robo calls"? Although the technology used to develop the Marauder was theoretically laying the groundwork for more advanced energy production, namely some kind of fusion reactor, powering the weapon proved costly. We may have detected a typo. That's a bit better, but remember: this is a maximum, regardless of anything else like barrel length, or field strength, or projectile weight. 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. So a 100 meter barrel would have a speed of about 7900 meters per second. In a plasma railgun, a voltage is applied so that current can flow through the flat rail electrodes. A coaxial railgun has one rail as a cylindrical shell encircling the other rail. Agm is extremely professional we needed to expand our property to accommodate an RV and relieve a drainage problem next to our garage! Spreading that same force over a larger distance I do not think adds anything to the equation acceleration wise. Featured photo: Shiva Star at theAir Force Research Laboratoryat Kirtland Air Force Base. Please try enabling cookies. To recreate this in a bullet, you need: The idea here is that the bullet is fired not containing plasma, but everything needed to make plasma. The two requirements being 'shaped into a bullet' and 'survive for 10 seconds.' Skyfi Labs helps students learn practical skills by building real-world projects. Registration ends May 5, 2023 at 9:00pm EDT, https://www.whatismybrowser.com/guides/how-to-enable-cookies/auto. | About Us Some references here about the American navy, but it is so far behind. On impact, the electrode is pushed back into the power supply and the carrier gas is released through the nozzle created on impact. Louise attended college, married and moved away. Especially against space debris. Stay up-to-date and build projects on latest technologies, Blog | A visit to the preserve in late spring or early summer will reveal some of these plants as well as neo-tropical migrant birds, including warbler and thrush species, and scarlet tanagers. Peak line-integrated electron number densities of approximately 8 10. A plasma railgun is a linear accelerator which, like a projectile railgun, uses two long parallel electrodes to accelerate a "sliding short" armature. Other alkaline-loving plants found here include maidenhair spleenwort, spring beauty, and Dutchmans breeches. [1], Magneto-inertial fusion seeks to implode a magnetized D-T fusion target using a spherically symmetric, collapsing, conducting liner. 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). 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. Dr. Coles died in the 1917 flu epidemic. These are laser powered, and the shock waves due to the sudden acceleration heat the pellet substantially before it hits the center. Coilguns don't have wear issues, as the projectile can be levitated in the barrel and be entirely non-contact and no arcing need occur. A tokamak is essentially an infinitely long rail/coil gun that produces a magnetic containment vessel for a super-heated plasma. While most of New Hampshire tends to have acidic soils, the calcium-rich bedrock in Westmoreland has resulted in rich, alkaline soils that provide habitat for a diversity of plant life that is uncommon in the state. Its the same lab used to produce energy enough for the SDI initiative (also known as Star Wars missile defense). 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). He created a simple electric cannon, which caught the attention of the French military who were seeking a weapon that . In this sci-fi world, plasma weapons are somewhat abundant in special forces, as their ammunition can be stored in smaller spaces, and in large quantities, but I ran into a problem regarding confinement: can be created quickly. Session ID: 2023-04-28:2c6aaeebb2aaad3ad105949e Player Element ID: vjs_video_3. A 100m railgun might not, in fact, be 10 times faster than a 10m railgun, if it wanted to stay in one piece after firing. Which ability is most related to insanity: Wisdom, Charisma, Constitution, or Intelligence? You can assume that any figures this gives are over-optimistic, but it isn't a bad upper-bound for coilgun performance. | MARAUDER, a U.S. government nuclear fusion research project Merauder, an American metalcore band Masked Marauder, a fictional Marvel Comics character Merrill's Marauders, United States commando unit in World War II This disambiguation page lists articles associated with the title Marauder. The United States is playing catch up in this area of weapons development at least it is in public. [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. And a plasma bolt with a lifespan of a millisecond, moving at 10,000km/s has a range of 10km. Identify blue/translucent jelly-like animal on beach. In the case of our hypothetical 200T coilgun, that gives us a maximum energy density of 16GJ/m3. Privacy Policy. Is "I didn't think it was serious" usually a good defence against "duty to rescue"? Join 250,000+ students from 36+ countries & develop practical skills by building projects. Some features of this site may not work without it. I don't know enough of the science to say if it is possible that they found some type of breakthrough. Learn More. MARAUDER was a United States Air Force experiment to develop long-range plasma weapons. Glass, perhaps jacketed in something more durable like ceramic, could contain the plasma apparatus. Railgun are less accurate, can fire from a longer range, do less damage against shield, have an average bigger dps. Quality group antiques shop with over 40 dealers conveniently located between Keene, NH and. It revolved around firing electromagnetically contained plasma out of a railgun encased in a toroidal (donut shaped) container. What does 'They're at four. Existing knowledge of coaxial railgun plasma instabilities and material interactions at vacuum and plasma interfaces are applied to the design. rev2023.5.1.43405. Allow that bolt of plasma to break out, and you have a really potent weapon. We're still messing with the specifics of the donut (how tall is it, how wide is it, how big is the hole, how much plasma do we shove in, how hot should the plasma be, etc), but the basic consensus is that Toroids are the ideal shape for a self-sustaining plasma bolt. Magneto-inertial fusion seeks to implode a magnetized D-T fusion target using a spherically-symmetric, collapsing, conducting liner. How to force Unity Editor/TestRunner to run at full speed when in background? Because even with those insane speeds, their 'Plasma Bolt' didn't live long enough to achieve a useful range ($3,000 km/s \times 1 \mu s = 3m$). As plasma railguns are an open area of research, the method of armature formation varies. That last issue was the real sticking point. Plasma railguns appear in two principal topologies, linear and coaxial. Specific elements of the design are examined and the inherent physical and material difficulties of a coaxial design are explored. What were the most popular text editors for MS-DOS in the 1980s? Connect and share knowledge within a single location that is structured and easy to search. Sogive us a quarter of your tail then? However, in a plasma railgun, the armature and ejected projectile consists of plasma, or hot, ionized, gas-like particles, instead of a solid slug of material. A plasma railgun is a linear accelerator uses two long parallel electrodes to accelerate a "sliding short" armature. Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. or 8,654 km/hr. one report published just over a decade after, Marauder was the US militarys first plasma railgun and it might have worked. Title VI Notice of Nondiscrimination All proceeds help support the Westmoreland PTA and their great programming for the students and teachers of Westmoreland! 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. The Warwick Preserve was established when TNC received a 36-acre donation from Dr. Ruth Warwick and her daughter Louise Hunninen in 1964. Read how we use cookies and how you can control them by visiting our Privacy Policy. Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. Plasma railguns are capable of producing controlled jets of given densities and velocities ranging from at least peak densities 1e13 to 1e16 particles/m^3 with velocities from 5 to 200 km/s dependent on device design configuration and operating parameters. 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. Other than that, you're essentially constructing bullet-sized fluorescent tubes with some sort of attached supercapacitor that can provide ionization voltages for ~10s. As plasma railguns are an open area of research, the method of armature formation varies. Where does the version of Hamapil that is different from the Gemara come from? 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. One way to do this would be by using superconducting coils and heat them to drop the superconductivity (sometimes known as a quench gun) but that'll turn the field energy into heat, and lots of it. After graduating from Boston University in 1904, Dr. Warwick and her first husband, Dr. Coles, operated a TB sanitarium in West Keene. This is obviously bad for your hopes and dreams. 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. 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. Reportedly, Ruth asked a local handyman to clear out a spring on the side of Butterfield Hill to provide water for the animals in the woods this is still visible at the end of the first steep section of the preserves hiking trail. It is noted that conventional plasma armature railguns are limited to velocities of 6-8 km/s by arc restrike. 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. Check your spam folder if you do not receive it. After observing an extensive clear-cutting operation on Butterfield Hill near their home, Ruth urged George to acquire the 36-acre parcel to preserve the beautifully wooded section of the hill. a railgun? MARAUDER took these Compact Toroids and fired them from a railgun. Coaxial railguns accelerate toroidal plasma armatures using a hollow outer conductor and a central, concentric, inner conductor. Coaxial accelerators require insulators only at the breech, but the plasma armature in that case is subject to the "blow-by" instability. 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. The preserve is located on Butterfield Hill in a quiet part of southwestern New Hampshire, not far from the Connecticut River. It was named MARAUDER or magnetically accelerated ring to achieve ultrahigh directed energy and radiation.. If your projectile is 20mm across and your barrel is 100m long, the amount of energy is the swept volume will be a reasonable 0.5GJ, for a muzzle velocity of 70km/s. We are talking about quite ridiculous energy levels here after all. It only takes a minute to sign up. 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. "Using a massive electrical pulse rather than a chemical propellant, ETDs: Virginia Tech Electronic Theses and Dissertations, Requesting that Material be Amended or Removed. Get started today! Essentially its a still classified US military project aiming to develop a railgun capable of firing 0.5-2.0 mg toroids of plasma at up to 3% light speed. and from everything I've dug up there's alot of conflicting data about it (some say. Plasma railguns are capable of producing controlled jets of given densities and velocities ranging from at least peak densities 1e13 to 1e16 particles/m^3 with velocities from 5 to 200 km/s dependent on device design configuration and operating parameters. A plasma railgun is a linear accelerator which, like a projectile railgun, uses two long parallel electrodes to accelerate a "sliding short" armature.However, in a plasma railgun, the armature and ejected projectile consists of plasma, or hot, ionized, gas-like particles, instead of a solid slug of material.Scientific plasma railguns are typically operated in vacuum and not at air pressure. I still see them. Can you still use Commanders Strike if the only attack available to forego is an attack against an ally? Round is a solid KE penetrator. Little is known about it after 1993 because it swiftly Classified Status. The limit is 'cee' . Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. @PcMan right, silly mistake. (10^10 gs, 1 s, etc). What's the intended of use of the few milligrams of plasma confined within the bullet? Cookie Notice Re-arranging F=ma, you get a=F/m, no mention of distance. 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. We use cookies to offer you a better browsing experience. Her three grandchildren continue to visit the preserve. This set up is not feasible with current technology, as most railgun power sources can only operate barely long enough to fire the projectile. A round for standard infantry against nano-machined ceramics. A sabot round arrangement (or just crushing the plate into a pellet) will allow you to concentrate much of this energy in a penetrator. | Verify Certificate It's travelling at 1-3 percent the speed of light. The U.S. Navy and Air Force have both developed railgun prototypes. It seems like a really cool concept. Ruth married George Warwick in 1923 and they moved to Westmoreland. | Mini Projects for Engineering Students Would My Planets Blue Sun Kill Earth-Life? If we have a 200g projectile with the specific heat capacity of steel (500J/KgK) and the melting point of steel (say, 1800K) we can see that the projectile's temperature will raise by 1K for every 100J of wasted energy. Connect and share knowledge within a single location that is structured and easy to search. While the preserve is worth visiting throughout the year, there are icy conditions on the steeper sections of the trail during the winter so make sure to bring appropriate gear or wait for the warmer seasons to enjoy the trails. Their design for plasma containment is called a Compact Toroid, and their design was similar to an arrangement called a Spheromak. Reddit and its partners use cookies and similar technologies to provide you with a better experience. This website uses cookies to enhance your experience and analyze performance and traffic on our website. Mr. Parsons was a perfectionist in his plans he and his crew have done our lawn maintenance for the past 3 years and it looks awesome. To manage or opt-out of receiving cookies, please visit our. The experiment which was performed to confirm the properties of the plasma jets produced by the coaxial plasma railgun is explained. 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. TIL Project MARAUDER, a coaxial plasma railgun powered by the SHIVA STAR capacitor bank, was designed by the USAF and capable of " [producing] doughnut shaped rings of plasma and balls of lightning that exploded with devastating effects when hitting its target." It was classified in 1993. en.wikipedia.org 540 30 comments Add a Comment Because the projectile was light-weight and magnetically strong, the prototype was able to accelerate a Compact Toroid of plasma at $10^{10}g$ (or about $98,100,000,000 m/s^2$). Mobile Terms & Conditions Z-pinches also magnetically accelerate plasma up to similar velocities. 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. 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. Also what kind of distance would these toroids be stable over? This is actually a design for a true plasma weapon that fires a bolt of magnetically contained plasma. | Plasma railguns are electromagnetic accelerators used to produce controlled high velocity plasma jets. @KareemElashmawy The vast bulk of what I said can be found in the wiki article I linked at the very start of the post. Could a subterranean river or aquifer generate enough continuous momentum to power a waterwheel for the purpose of producing electricity? Read how we use cookies and how you can control them by visiting our Privacy Policy. The rest can be found here: @JDugosz Thanks for calling that outthat was edited in by someone else, I fixed it.