The ccemg showed a 3 times increase in energy and power density over the range gun system. Oct 21, 2015 we talk to the mystery maker behind the 3d printed railgun gareth branwyn he is the author or editor of over a dozen books on technology, diy, and geek culture. The force on a wire in a uniform magnetic field is f il x b. Railgun construction the railgun site has moved to. Design, fabrication, and testing of an electromagnetic. This project taught me a lot about physics, a little about engineering, and a great deal about modeling and the work and mindset necessary to complete projects of this nature. Download hydrology and floodplain analysis, 5th ed pdf. Physics stack exchange is a question and answer site for active researchers, academics and students of physics. The railgun has been a pet project for the navy for more than a decade since early testing of a prototype for a shipboard. However, in a plasma railgun, the armature and ejected projectile consists of plasma, or hot, ionized, gaslike particles, instead of a solid slug of material. Current flowing through an inductor creates a magnetic field. Explore railgun with free download of seminar report and ppt in pdf and doc format. As mallinckrodt professor of physics and professor of the history of science, gerald.
These results are interesting on their own, but throughout this post i will try to put them in context and show the various aspects of. General info overviewgoals schematics railgun prototype. It is believed that the railgun can reach up to 140 kms. The story of the development of science is told along with the history, philosophy, and literature of the time. The objectives of this project are to continue the enhancements to the combined. The current flowing through the field creates a lorentz force on the inductor tending to push the coil apart. I am on a budget and am wondering what the best materials would be to use while keeping the cost low.
General info overviewgoals schematics railgun prototype rail. I first started by constructing a small railgun as a proofofconcept. Scientific plasma railguns are typically operated in vacuum and not at air pressure. The current distributions on the rails and armature are not only affected by the skin effect, but also influenced by the proximity effect which is rarely mentioned. A one meter electromagnetic railgun was designed and constructed to serve as a test bed for research into alternative armature materials, railarmature plasma effects, and current pulse forming techniques. Compulsator design for electromagnetic railgun system by bryan bennett senior project electrical engineering department cal poly state university, san luis obispo june, 2012. Hypervelocity projectile acceleration with a railgun using a two. I, along with three other people from my class, have all begun the task of building a railgun to enter into a science show for the college.
This article will describe the general construction of the electromagnetic coil gun shown in figure 1. Discuss force, work and energy in a capacitordrive railgun, as illustrated. In order to remain safe for the client and all students involved, the railgun must shoot lightweight projectiles at slow speeds. A railgun is a device, typically designed as a weapon, that uses electromagnetic force to launch. In some hypervelocity research projects, projectiles are pre injected into. It can also be noted that the textbook formula for the high frequency. It can be a solid piece of conductive metal or a conductive sabot a carrier that houses a dart or other projectile. Also explore the seminar topics paper on railgun with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020.
Preface the project physics course is based on the ideas and research of a national curriculum development project that worked in three phases. This is a great project to explore a number of analog electronics. Make toys at home with common household materials, often in only a few minutes, that demonstrate fascinating scientific principles. If one portion of the coil is free to move, this portion will slide away from the power source. Research on proximity effect of electromagnetic railgun. The us navy is working on a few railgun projects that will eventually replace the largest guns on the fleets cruisers and destroyers. Performance of a hydromagnetic plasma gun physics of fluids 3 1960. Additionally, by using purely electromotive force for the acceleration, the need for explosive propellants is eliminated. I built a small railgun for my physics final project in high school based on this design. The rails of electromagnetic railgun can be ablated by the temperature rise due to current concentration.
Experiments to increase the used energy with the pegasus railgun. We put a barrier 24 ft away and it went over it, giving it a min speed of about 70 fts. Force on projectile along rails railgun physics forums. In some hypervelocity research projects, projectiles are preinjected into. December 15, 2011 a simple rail gun was constructed from a pair of aluminum rods and a 0. The underlying physics involved in the railgun are rather simple. Navy released a test fire video tuesday of its new electromagnetic railgun, a weapon military officials have long heralded as the height of. From wikibooks, open books for an open world books and films for good ideas they could use for physics and futures scientific developments, there is a good case for the army searching through computer games for better methods of implementing death, be those methods strategic. Navys highly touted electromagnetic railgun weapon system, which can fire a projectile traveling 4,800 miles an hour at distances of up to 100 miles away, will likely never see combat. The rails are lengths of conductive metal, such as copper. The physics of the railgun this demo is safe for you to try at home if you have an actual magnetic compass.
A good thourough overview of railgun theory and physics. The em15 coil gun is a handheld, battery powered 12 vdc rifle that is capable of launching a. The railgun uses a pair of parallel conductors rails, along which a sliding armature is accelerated by the electromagnetic effects. Hey all, i was wondering if yall would have any resources on building a railgun for a project in physics.
Nuclear instruments and methods in physics research section b. The magrac code was validated through a series of eight railgun tests. Postshot analysis using the armrail armature physics and railgun. Levitating pyrolytic graphite franklins bells rotary high voltage motor curieeffect heat engine diamagneticly stabilized magnetic levitation the gauss rifle a magnetic linear accelerator high voltage motor a railgun in 10 minutes. Rail guns leave gunpowderbased weapons in the dust one can hit a target 250 miles away in six minutes. Hypothetically, you could use that to determine the force of one rail on the other, but that doesnt help. Doityourselfrailgun wikibooks, open books for an open. Supplementary materials make it adaptable to all levels of interest and aptitude. Design, fabrication, and testing of an electromagnetic rail gun for the repeated testing and simulation of orbital debris impacts. Exploring electromagnetic acceleration of rail guns. In order to remain safe for the client and all students involved, the railgun must shoot lightweight projectiles at. For this project, a railgun will be designed and built for low velocities for use in high school classroom demonstrations and physics mechanics based experiments. Download the ebook hydrology and floodplain analysis, 5th ed in pdf or epub format and read it directly on your mobile phone, computer or any device.
Rail gun project presentation electric current gun scribd. An hpv round fired from a railgun leaves the barrel at mach 7. A look into railgun physics and design senior honors thesis scott harmon april 2011 railguns promise to make space travel and weapons systems much more efficient for the future. A conventional cannon has some type of shell in a tube. But avoid asking for help, clarification, or responding to other answers. He is currently a contributor to boing boing, wink books, and wink fun. In this setup a thin metal foil is placed on the back of a non. May 27, 2014 this feature is not available right now. In 1987 a successor was created, project edo1, that used projectile with a mass of 0. The project is based on the use of a 2slgg to inject projectiles at about 7 kms. Thanks for contributing an answer to physics stack exchange. The rail gun was fired from a height of 25 inches with an angle of 110 inch 6 inches so 1 degree. Current research and development physics of rail gun applications of rail gun.
Hypervelocity projectile acceleration with a railgun using a. Im currently working on a project for projectile motion and my teacher wants to see us launch a. Design and construction of a one meter electromagnetic railgun. This paper describes the formulation of the magrac railgun model and compares the predicted current waveforms with those obtained from fullscale experiments. Feb 07, 2009 us laser and rail gun development news. The shell is then launched by the expansion of exploding gun powder. My original design was several capacitors 5100 uf, 400v wired to two, 3 foot metal rails. An exploration of the physics behind rail guns daniel lenord university of alaska fairbanks physics 212 web project, spring 2003. They worked together from 1962 to 1964 with financial support from the carnegie. Hypervelocity projectile acceleration with a railgun using. First, the three authors collaborated to lay out the main goals and topics of a new introductory physics course. In a school science project, the rails might be strips of aluminum foil taped to a.
Hawke university of california, lawrence liuermore national laboratory, livermore, california 94550, usa unique potential applications of. Below is a schematic view of the rail gun from the top. Find out how rail guns can be used and learn about the limitations of this technology. Navy released a test fire video tuesday of its new electromagnetic railgun, a weapon military officials have long heralded as the height of star wars. The materials in the collection were created at harvard university under the leadership of rutherford, gerald holton, and fletcher w. Feb 15, 2014 the railgun has a much larger possible power than a powder gun. The projectile normally does not contain explosives, instead relying on the projectiles high speed and kinetic energy to inflict damage. A railgun is a device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. You need to determine the force from the rails onto the projectile, not the force of the rails on themselves. From its conception, the original powerlabs linear magnetic accelerator rail gun, or railgun was conceived for the primary goal of simply proving that it could be done. He is the author or editor of over a dozen books on technology, diy, and geek culture.
For the love of physics walter lewin may 16, 2011 duration. Plasma railguns are used in physics research and they have been explored as. My research into the railgun also led me to the development of several highenergy related weapons, including the portable emp electromagnetic pulse device, which somewhat resembles the railgun, although it doesnt fire a. Feb 12, 2012 how do people get 100 amps through the conductors. Jeff maniglia, jordan smiroldo, alex westfall, and guy zohar 1 california polytechnic state university, san luis obispo, ca 93401 an electromagnetic railgun emrg was designed, built, and tested, capable of firing a. Pdf experiments to increase the used energy with the.
I conducted a project to skim the surface of railgun physics and design. However, we think it hit the wall at a height of 15 inches, giving it a speed of 140 fts. The superpowerful magnets in our catalog work great, and were the ones used in this project. James rutherford is curator of the project physics collection. Hawke university of california, lawrence liuermore national laboratory, livermore, california 94550, usa unique potential applications of electromagnetic railguns r.
Currently, we have been able to reach velocities around 9 kms with the railgun. Navys highly touted electromagnetic railgun weapon system, which can fire a projectile traveling 4,800 miles an hour at distances of up to. Design, fabrication, and testing of an electromagnetic rail. The project physics course is comprehensive,flawless,and challenging. We talk to the mystery maker behind the 3d printed railgun. Compulsator design for electromagnetic railgun system by bryan bennett senior project electrical engineering department cal poly state university. The physical railgun was used to determine the parameters or dials that exist for tweaking a railgun s performance. Related introductory physics homework help news on. You need to be talking of values on the order of 106 amps for a really effective rail gun which means that this is not suitable for your class room project. Exploring electromagnetic acceleration of rail guns tyler rhoades physics department, the college of wooster dated. Us laser and rail gun development news page 26 china. For a school project, i am designing and engineering a functional rail gun. There are a couple of simplifications, omissions, and errors but allinall it is a good reference.
That equation is for calculating the force between two parallel wires. The railgun has been a pet project for the navy for more than a decade since early testing of a prototype for a shipboard system began in 2006. Magnetic rail gun science project ii how to build it. Apr 05, 2012 force on projectile along rails railgun thread.
The yugoslavian military technology institute developed, within a project named edo0, a railgun with 7 kj kinetic energy, in 1985. Rail gun project presentation free download as powerpoint presentation. This project seeks to demonstrate an elecrtomagnetic gun system designed from a systemmission prospective. Final thoughts having completed this project i have several thoughts about what i did, what i couldve done, and what i want to do in the future. From the rail currents, the projectile acceleration, velocity, and position are found. The navys futuristic electromagnetic railgun is set to take a major developmental step forward this summer as developers work to increase the number of shots it can fire per minute and the power behind the system. Ultimately, the current delivered to the motor is just enough to balance the force of friction. Jon kitzmiller, an expert in electromechanical systems at the university of texas, who worked on an earlier railgun project, says that the navy team is. A plasma railgun is a linear accelerator which, like a projectile railgun, uses two long parallel electrodes to accelerate a sliding short armature. The railgun has a much larger possible power than a powder gun.
This video gives more info on the dimensions, materials, and construction method shown in the original magnetic rail gun video. The us onr railgun project demonstrates that the military application of such high. A dangerously powerful circuit as my part of the project, i have successfully modeled how a railgun acts as a circuit. For this project, a railgun will be designed and built for low velocities for use in high school classroom demonstrations and physicsmechanics based experiments.