I'm interested to know what is the maximum realistic muzzle velocity of a coilgun with a 100m barrel length. It is worth noting that at that speed the projectile exceeds orbital velocity at Low Earth Orbit. He describes two promising approaches which are based on demonstrated technology. 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. Magneto-inertial fusion seeks to implode a magnetized D-T fusion target using a spherically-symmetric, collapsing, conducting liner. Outside hard vacuum, that 10000 km/s torus is not going anywhere. Would this system work better in space? [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. In December 1998, TNC accepted a donation of 68 acres from Ann Fisher; this addition increased the size of the preserve to 104 acres. | Summer Training Programs "Containment" and "weapon" are typically contradictory. Plasma railguns are being evaluated as a possible method of implosion linear formation for fusion. I'm pretty sure the plasma was preheated and injected into the railgun. And yes, the magnetic properties of metals tend to go to pot once they melt. Spreading that same force over a larger distance I do not think adds anything to the equation acceleration wise. 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). The United States is playing catch up in this area of weapons development at least it is in public. The design of individual gun components is detailed. Other alkaline-loving plants found here include maidenhair spleenwort, spring beauty, and Dutchmans breeches. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Their design for plasma containment is called a Compact Toroid, and their design was similar to an arrangement called a Spheromak. You can start for free today! JavaScript is disabled for your browser. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. How could I contain plasma for use in weapons? your projectile now has a worse length-to-width ratio, which makes it less effective at penetrating the target's defences. Little is known about it after 1993 because it swiftly Classified Status. You may experience issues registering or using other parts of the website. Scan this QR code to download the app now. The Air Force has been at this game for decades, though, and its previous work is more advanced than anything coming out of the Navy Department, Russia, China or even Kim Jong Uns wildest dreams. The USAF has already developed a plasma weapon that meets all but two of your requirements; but, it also bypasses their necessity. 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. 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. MARAUDER: Magnetically Accelerated Ring to Achieve Ultra-High Directed Energy and Radiation, TL: DR, an American project from the 1990's where they build a coaxial plasma railgun, which uses plasma as a KINETIC weapon, accelerating a Torus (a ring) of 0.5-2 milligrams of plasma to relativistic speeds, 1-3% the speed of light, 3000-10,000 km/s. Description Evading railgun fire 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. Its no secret the United States has been working on effective rail gun technology for years. Working backwards, this gives us a maximum kinetic energy of ~35MJ and so a maximum muzzle velocity of 18km/s, regardless of anything else about our gun. (Note that there will be other limits to projectile temperature superconducting projectiles musn't be heated above their critical temperature, for example, and that'll be a lot lower than their melting point: ~300K for a scifi "room temperature" superconductor, for example. 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. Lets imagine your projectile now has a SHC of more like 1kJ/KgK, and a melting point of 3000K. rev2023.5.1.43405. Where does the version of Hamapil that is different from the Gemara come from? That's not bad at all. A round for standard infantry against nano-machined ceramics. Before that could happen, MARAUDER vanished into Classified Status. 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. ? If you still see this message after clicking the link, then your browser settings are likely set to not allow cookies. ;). The plasma is accelerated until it leaves the muzzle of the railgun. Randy Curry and his friends were able to fire a self-contained ring of plasma in open air, that lasted for 10 milliseconds. Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? 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. Developed by Phillips Laboratory. The Navy spent more than a . Plasma is to be found in all gas discharge lamps while in operation; it's not magical, it is an ordinary state of matter. in 2017, but as a possible energy storage mechanism, not much different from a plasma-armature, Real-Life Plasma Rounds With Surprising Penetration in a Pill Sized Package! Railguns are just high velocity rounds so standard plus extra defenses will work. That last issue was the real sticking point. Some handwaving of high-capacity, high-voltage, extremely compact and inexpensive supercapacitors will be needed. Simply put, its not exactly mobile enough to use in ground combat. Get started today! The other example is the MARAUDER (Magnetically Accelerated Ring to Achieve Ultra-high Directed-Energy and Radiation) used the Shiva Star project (a high energy capacitor bank which provided the means to test weapons and other devices requiring brief and extremely large amounts of energy) to accelerate a toroid of plasma at a significant . the #1 use for a weapon like this would most likely be ballistic missile defense, shooting down ICBMs or other strategic weapons. How are engines numbered on Starship and Super Heavy? Linear plasma railguns place extreme demands on their insulators, as they must be an electrically insulating, plasma-facing vacuum component which can withstand both thermal and acoustic shocks. Basically, it looks like a donut. the US Office of Naval Research says. In what environment - vacuum, atmosphere, etc.? View Directions Railguns don't scale very well, due to the problem of the armature plasma cooking the rails. In 1964, the Warwick Preserve was the first New Hampshire property donated to The Nature Conservancy. Enter your email address and we will send you instructions to reset your password if there is an account for that email. What are the advantages of a coilgun v.s. The railgun has less ammo, but a little higher damage and (correct me if I'm wrong) it's better to shoot out subsystems. There are possibly other things you might be able to do, like packing your projectile in some kind of coolant that is melted and evaporated to cool the projectile as it is accelerated. If you have any questions about this race, click the button below. If it breaks out by accident, even if it destroys everything would you still call it a 'weapon' ? In a plasma railgun, the armature and ejected projectile consist of hot, ionized, gas-like particles heated by a very high temperature. Has the Melford Hall manuscript poem "Whoso terms love a fire" been attributed to any poetDonne, Roe, or other? More or less a tiny flash as the projectile is destroyed? Railguns have long existed as experimental . 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]). I'm asking from a viewpoint using known physics and materials, but pushing those limits to a realistic maximum even if such a design is not yet practical. However, in a plasma railgun, the armature and ejected projectile consists of plasma, or hot, ionised, gas-like particles, instead of a solid slug of material. It's still an accelerating mass @RossPresser in general, because you can no longer rely on its intermolecular bonds to hold it together. for example, scramble or disable a random part of a, The containing should last for 10 secs, max, A small, extremely-highly-compressed canister of carrier gas, A bullet design that becomes a nozzle on impact (hollow-. The system shown on our data is a relatively low velocity device within the building capability of most hobbyists. Youve already signed up with this email address. A plasma-projectile shooting railgun is basically an armature that converts to plasma ('transitioning' armatures are also a thing and have been considered as a bridge between plasma armatures and solid/hybrid armature railguns, in fact) which is what Wikipedia describes (although the velocities are an order of magnitude less than what Shiva That speed makes it about 2,394 m/s. 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. What're the weight and dimensions of the slug? In coaxial plasma railguns, the electrodes are concentric. We don't know if it ever went anywhere. cheaper and more accurate than traditional gunpowder-based methods. Dr. Coles died in the 1917 flu epidemic. The importance of using plasma technology is that they produce muzzle velocities in 100s of km/shaving 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. The power requirement appears to be immense. Which was the first Sci-Fi story to predict obnoxious "robo calls"? Still not quite good enough for the satellite-based weapon that MARAUDER was meant to bebut pretty solid for ground-based combat. I still see them. a railgun? 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. The bolts would also send out heat, potentially superheated metal shards, and an electromagnetic pulse that would scramble unshielded electronics. Privacy Statement To manage or opt-out of receiving cookies, please visit our. Would this be at all practical as a weapon system? The concept of the railgun, a technology that could utilize a large circuit to launch a projectile far further than one launched via the use of a chemical reaction, was developed by Andre Louis Octave Fauchon-Villeplee. Connect and share knowledge within a single location that is structured and easy to search. It seems like a really cool concept. Generating points along line with specifying the origin of point generation in QGIS. It is one of several United States Government efforts to develop plasma-based projectiles. You must log in or register to reply here. However, in recent years, new research has shown promise in extending the lifespan of these Toroids. 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. 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. 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. For more information, please see our Project MARAUDER was a coaxial railgun that shot plasma donuts that exploded (I think) on impact and also caused an emp discharge. The Warwick Preserve was established when TNC received a 36-acre donation from Dr. Ruth Warwick and her daughter Louise Hunninen in 1964. Please enter a valid email address (formatted as name@company.com). Why don't we use the 7805 for car phone chargers? That's a nice round number, and doesn't rule out superconducting projectiles, as it should be below the critical field strength of futuristic high-temperature superconductors (see here for some analysis of YBCO, one of the best practical real-world superconductors). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. How to force Unity Editor/TestRunner to run at full speed when in background? rev2023.5.1.43405. Why is it shorter than a normal address? Global sites represent either regional branches of The Nature Conservancy or local affiliates of The Nature Conservancy that are separate entities. 1,680 were here. That's a bit better, but remember: this is a maximum, regardless of anything else like barrel length, or field strength, or projectile weight. Some references here about the American navy, but it is so far behind. There's no free lunch to be had here! A tokamak is essentially an infinitely long rail/coil gun that produces a magnetic containment vessel for a super-heated plasma. No hunting on the southern portion of the preserve (Warwick parcel). Description. Session ID: 2023-04-28:2c6aaeebb2aaad3ad105949e Player Element ID: vjs_video_3. Thanks for detailed post Connor. Other than that, you're essentially constructing bullet-sized fluorescent tubes with some sort of attached supercapacitor that can provide ionization voltages for ~10s. Rank amateurs. In 1993, the Air Force Research Laboratory finally published an experiment in high-velocity plasma projectile weapons.

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