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Model Forum / General / Rockets / January 2005do the regs cover coil guns
Hi Anyone ever try to launch using a magnetic coil gun in place of an engine? The design covers use of a electromagnet, driven by a charged bank of large capictors, charged using batteries. the rocket would be fitted with aluminum rings which are shoved by the magnetic field. http://www.powerlabs.org/coilguns.htm If this could work the recovery deployment could be by way of altimiter. That is if it were heavy or tumble if not. any thought as to the rules that may govern such a model Misha VE9MTB TRA L-1 The projectile would be the problem. The article states that the projectile must be ferromagnetic (iron or alloy construction). There will be some idiot in Washington that would call this a firearm or a destructive device due to the metallic content of the vehicle. Or the fact that the technology can be enhanced to power the vehicle to hypersonic speeds. This project is called a number of things including "Mass Driver, Gauss Rifle, Rail Gun". The magnetic trains in Japan work on a similar principle. They had to limit the train speed to 200 mph, it can go much faster. > Hi > [quoted text clipped - 13 lines] > VE9MTB > TRA L-1 > The projectile would be the problem. The article states that the projectile > must be ferromagnetic (iron or alloy construction). There will be some > idiot in Washington that would call this a firearm or a destructive device > due to the metallic content of the vehicle. I was not aware the FF rules on firearms and destructive devices in the gun control act covered metallic content of rockets. they are a destructive device only if equipped with a warhead thhat I can find in my green book > > The projectile would be the problem. The article states that the > projectile [quoted text clipped - 4 lines] > I was not aware the FF rules on firearms and destructive devices in the gun > control act covered metallic content of rockets. They don't. The only regulatory "intersect" I can think of might involve the applicability of the FAA "model rocket" or "large model rocket" categories, which may among other things (IIRC) call for lightweight nonmetallic construction... but then, it's not clear that the device would constitute a "rocket" in the first place, since it is not propelled by expelling gas produced within it. What _are_ the FAA rules, if any, for unpowered ballistic projectiles? (Do the "pumpkin throwers" apply for waivers or anything?) Legally, an unpowered coilgun-launched dart should be treated comparably! -dave w > What _are_ the FAA rules, if any, for unpowered ballistic > projectiles? (Do the "pumpkin throwers" apply for waivers > or anything?) Legally, an unpowered coilgun-launched dart > should be treated comparably! have you seen anvil launching on Discovery ? no waivers that I am aware of. > > What _are_ the FAA rules, if any, for unpowered ballistic > > projectiles? (Do the "pumpkin throwers" apply for waivers [quoted text clipped - 4 lines] > > no waivers that I am aware of. That's just evil :)  SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 > > have you seen anvil launching on Discovery ? > > > > no waivers that I am aware of. > > That's just evil :) Yep, they use Household Black powder to launch them from a flat surface. As Ellain would say, "Get out of town!" >>>have you seen anvil launching on Discovery ? >>> [quoted text clipped - 5 lines] > > As Ellain would say, "Get out of town!" Actually, they get launched from on top of another anvil. The bp is placed in a "well" machined into the top surface of the bottom anvil. You get extra points if you catch the anvil before it hits the ground. ;) >> > have you seen anvil launching on Discovery ? >> > [quoted text clipped - 5 lines] > >As Ellain would say, "Get out of town!" So kids start out launching tin cans with Black Cat fire crackers, as as they brow older, they move on to anvil launching. What's next? Alan >>>>have you seen anvil launching on Discovery ? >>>> [quoted text clipped - 10 lines] > > Alan In the "old west" it was a common form of celebratory behavior to "launch" anvils, i.e. fourth of july, county fairs, rodeos and so on. So like muzzle loading guns and cannons, it's o.k. Not a lot of fireworks availability back then. If You've never seen it in person, you'd never believe how really, really loud it is! >>>>>have you seen anvil launching on Discovery ? >>>>> [quoted text clipped - 16 lines] > >Not a lot of fireworks availability back then. Thanks, I was not aware of the history of anvil launching. >If You've never seen it in person, you'd never believe how really, >really loud it is! > Thanks, I was not aware of the history of anvil launching. Hi Alan, Does/did the fact a history was involved make it more approved to you ? I don't say this to disrespect, but if you only respect something because of a history of doing it, then what made it proper back in the day ? something should be just as proper doing it today if it never was done before. >> Thanks, I was not aware of the history of anvil launching. > >Hi Alan, > >Does/did the fact a history was involved make it more approved to you ? Not to me. However, I do appreciate learning new interesting bits of knowledge and history. >I don't say this to disrespect, but if you only respect something because of >a history of doing it, >then what made it proper back in the day ? > >something should be just as proper doing it today if it never was done >before. What makes that historical bit interesting to me is that, it may have some bearing on our legislators. The same legislators that allow us up to 50 lbs or PB for use in antique firearms, etc. may approve of using BP for historical reenactments of anvil launching as well. Alan > What makes that historical bit interesting to me is that, it may have > some bearing on our legislators. The same legislators that allow us > up to 50 lbs or PB for use in antique firearms, etc. may approve of > using BP for historical reenactments of anvil launching as well. Ok, great point. > What makes that historical bit interesting to me is that, it may have > some bearing on our legislators. The same legislators that allow us > up to 50 lbs or PB for use in antique firearms, etc. may approve of > using BP for historical reenactments of anvil launching as well. Perhaps if we only used our "explosive" materials to reenact historical events (such as the Mercury or Apollo launches) they'd leave us all alone? <GRIN> > have you seen anvil launching on Discovery ? Hmmm. I thought Warner Brothers was the only one licensed for that. ; ) Randy >>What _are_ the FAA rules, if any, for unpowered ballistic >>projectiles? (Do the "pumpkin throwers" apply for waivers [quoted text clipped - 4 lines] > > no waivers that I am aware of. I've seen anvil launching, up close and personal. The altitude reached barely exceeds 20 feet. Besides, anvils are not rockets. But they are Ferrous, so I guess you could fire them from a rail gun. > I've seen anvil launching, up close and personal. We believe you. SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 Potato guns, and the like, are already banned in many states. Like shooting fireworks off in your own yard, the police ignore it untill someone complains. >> > The projectile would be the problem. The article states that the >> projectile [quoted text clipped - 25 lines] > > -dave w > Potato guns, and the like, are already banned in many states. Like shooting > fireworks off in your own yard, the police ignore it untill someone > complains. But that is not federal law and that matters. One can always leave a blue state to be free. > >> > The projectile would be the problem. The article states that the > >> projectile [quoted text clipped - 25 lines] > > > > -dave w First, I was speculating on how quickly ATFE would react to such a system being designed and used. Secondly, this would not be a rocket since it is not self powered. Third, at hypersonic speeds any metalic object thick enough to withstand the heat generated at such a speed would pass through most things it would encounter such as an airplane, a house, or somebody. Remember the SR71 Blackbird flies at Mach 3.5(hypersonic). It has no fear of beind shot down by ground fire since it can outrun ALL firearms ammunition and most air to air missiles and most surface to air missiles. Again, you are dealing with what would be called a vehicle or projectile, not a rocket. Also a fully automatic weapon is considered a destructive device, it has no warhead, just fires bullets. So are switchblades and stilettoes for that matter. Both are classified as class 3 destructive devices by ATFE. >> The projectile would be the problem. The article states that the > projectile [quoted text clipped - 9 lines] > they are a destructive device only if equipped with a warhead thhat I can > find in my green book > Also a fully automatic weapon is considered a destructive device, it has no > warhead, just fires bullets. So are switchblades and stilettoes for that > matter. Both are classified as class 3 destructive devices by ATFE. No a full auto weapon is a Class three Weapon, not a class 3 destructive device. I can get a Class three permit for a full auto weapon much easier then it took to obtain the leup, since I don't have to have storage for the Class 3 weapon. The fed requirements are easy if you are clean. Now if you are in a blue state, expect added state & local measures to make it more difficult, if not impossible. But in my state, they are pretty a matter of route to obtain for the true law abiding. > >> The projectile would be the problem. The article states that the > > projectile [quoted text clipped - 9 lines] > > they are a destructive device only if equipped with a warhead thhat I can > > find in my green book Sorry, you are wrong. I am in the firearms business. Class 3 is Class 3. You DO have to have proper Fed approved storage for Class 3 items no matter what they are. You also are subject to inspection and the approval process as are LEUP holders. You storage must be approved by ATFE. I know, I've been there. >> Also a fully automatic weapon is considered a destructive device, it has > no [quoted text clipped - 31 lines] > can >> > find in my green book > Sorry, you are wrong. I am in the firearms business. Class 3 is Class 3. > You DO have to have proper Fed approved storage for Class 3 items no matter > what they are. You also are subject to inspection and the approval process > as are LEUP holders. You storage must be approved by ATFE. I know, I've > been there. No Disrespect Mark. Ok, please describe the required storage for a suppressor for a .22 long handgun ? The storage requirements for Class 3 full auto require you to have a distance requirement ? I don't want a debate, my point is that getting a class 3 is alot easier then a leup in most (39?) states. you can even find an easy work around for the chief authority if running a business. > > Sorry, you are wrong. I am in the firearms business. Class 3 is Class 3. > > You DO have to have proper Fed approved storage for Class 3 items no [quoted text clipped - 19 lines] > you can even find an easy work around for the chief authority if running a > business. So since you are talking guns, (I am not a gun owner), never wanted them. What guns can a minor directly own, or own with adult purchase? Jerry SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 > So since you are talking guns, (I am not a gun owner), never wanted them. > > What guns can a minor directly own, or own with adult purchase? Dad must own the firearm today. back in the old days JR could. JR can use the firearm under Dad's supervision. National Firearms purchase rules, you need a national background check to buy and own them. JR can have a bb gun running around loose in the woods in my state, but not in the state up north from me. But Dad must by the BB gun. (CSPC again here since BB guns are not firearms ?) A minor under the age of 18 cannot legally own a firearm. A minor may possess a firearm in the presence and supervision of an adult who is legally able to own a firearm. Minors over the age of 18 may own(purchase) a long gun(rifle or shotgun). This can vary state by state according to state law. A person must be 21 or older to purchase a handgun. Some states and local municipalities require registration and permits for any firearms. Check with locals for restrictions in your area. >> > Sorry, you are wrong. I am in the firearms business. Class 3 is Class >> > 3. [quoted text clipped - 29 lines] > > Jerry >A minor under the age of 18 cannot legally own a firearm. >A minor may possess a firearm in the presence and supervision of an adult [quoted text clipped - 5 lines] >Some states and local municipalities require registration and permits for >any firearms. Check with locals for restrictions in your area. I remember ninety grade at a small rural high school, in Iowa about 1970. Many of the kids were hunters and shooters. Some hunt before and after school and keep guns, mostly rifles and shotguns, in cars parked in the school parking lot. They would go around school all day openly talking about guns. This school also seemed to have a high rate of bullying and fighting. Yet I can't recall a single incident there involving guns. I'm not saying that it was legal, or even the norm, but it was not a problem. Alan > A minor under the age of 18 cannot legally own a firearm. Yes but what sorts of "guns" may they have? For example: squirt gun. Pellet gun? Jerry SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 >>A minor under the age of 18 cannot legally own a firearm. > [quoted text clipped - 5 lines] > > Jerry This is the second time that you've asked that question. What's your point? First, Federal law does not recognised a bb or pellet gun as a firearm. Local and State laws cover those. Jerry you live in California where nearly anything that shoots is regulated.... better check State laws for what is legal. >> A minor under the age of 18 cannot legally own a firearm. > [quoted text clipped - 5 lines] > > Jerry > First, Federal law does not recognised a bb or pellet gun as a firearm. > Local and State laws cover those. Jerry you live in California where [quoted text clipped - 8 lines] > > > > Pellet gun? I was asking as a means to understand the "basis" ATF uses to declare some firearms as firearms and others as not firearms. Those "guns" seem to not involve fire. Jerry SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 Ok here is where it gets dicey, supressors are an odd animal. First, is the suppressor assembled or in componet pieces? If it is in componet pieces the there is no requirements due to the fact it is not a suppressor until it is assembled. If it is assembled then the same requirements are for full auto weapons and destructive devices. A permanent (a 500# gunsafe quallifies as permanent since it would take heavy equipment to move it)strong box capable of denying anyone access to the device but the one who holds the liscence(locked). This box must be diagramed as to it's location in the structure where it is stored. This diagram must be included with the application and will be inspected before the liscence is issued. The box is subject to approval by ATFE agents. This may be inspected quarterly or yearly at the field office's discretion and capability. There are no distance requirements. Anyway, I agree with you that in some states you have less hoops to jump through to own full auto weapons and various other restricted weapons. LEUP is just another attempt of the Feds to regulate law abiding citizens. Obviously Terroists are not going to get one to store explosives anyway. This only affects those of us who wish to enjoy this hobby. It will have no impact on those with evil intent. Like the People's Republic of New Jersey you need a permit for a paintball gun. Ridiculous. No offense taken. Just wished we were talking about something else. My son is in Iraq right now fighting for these rights we enjoy and now our government is slowly eroding the rights my son is ready to lay down his life to defend.....I'm a little testy. My appologies. >> Sorry, you are wrong. I am in the firearms business. Class 3 is Class 3. >> You DO have to have proper Fed approved storage for Class 3 items no [quoted text clipped - 20 lines] > you can even find an easy work around for the chief authority if running a > business. >No offense taken. Just wished we were talking about something else. >My son is in Iraq right now fighting for these rights we enjoy and now our >government is slowly eroding the rights my son is ready to lay down his >life to defend..... >>I'm a little testy. My appologies. I can understand. I will add him to my prayers for our fighting boys and girls. >> The projectile would be the problem. The article states that the >projectile [quoted text clipped - 4 lines] >I was not aware the FF rules on firearms and destructive devices in the gun >control act covered metallic content of rockets. This thread is useless. However, I will point out that non metallic "rockets" can also be launched using electro-static forces. Alan Think he's just trying to keep a debate going....Wish I never opened my mouth. >>> The projectile would be the problem. The article states that the >>projectile [quoted text clipped - 11 lines] > > Alan > Hi > [quoted text clipped - 13 lines] > VE9MTB > TRA L-1 Hmmm.... there aren't any goveernment regulations that cover such a thing as far as I know... similar things (as far as recovery) have been done with boosted-darts: there was a writeup on ROL that I saw a while back... the unpowered "upper stage" was a PML "Cirrus Dart" with an extra nosecone (modified to engage alignment features on the booster) on the rear; recovery used electric ejection by way of a conventional HPR altimeter. (I forget whether dual deployment was used.) The coilgun idea sounds interesting... acceleration forces might be abit extreme to achieve practical rocket performance, though... -dave w http://babylon5.epguides.info/?ID=948 WMD = not a good idea. > http://babylon5.epguides.info/?ID=948 This is an argument against gravity wells, not mass drivers. Also read the book "The Moon is a Harsh Mistress". They use gravity well weapons there too. "How are we going to fight?" "We're going to throw rocks." "No, seriously." "Yes, seriously." It's on topic too. They launch ore-filled rockets at earth, and purposely lawn dart them from orbit. Terminal velocity impact at that speed resembles a nuke blast, but without the nasty radiation. > Hi > [quoted text clipped - 13 lines] > VE9MTB > TRA L-1 Not NAR Not AMA I guess not NRA It may be an unaffiliated hobby. Hobby electronics/electrics? Jerry SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 > It may be an unaffiliated hobby. > > Hobby electronics/electrics? Hobby electromagnetic ballistics? Does 'rocket' not entail the propulsion device being contained within the vehicle? I can't see having the coil and supply on the rocket being a good idea (too heavy). SignatureNiall Oswald ================================ http://www.bits.bris.ac.uk/niall UKRA 1345 EARS 1151 MARS > > It may be an unaffiliated hobby. > > [quoted text clipped - 5 lines] > vehicle? I can't see having the coil and supply on the rocket being a good > idea (too heavy). It's not a rocket, it's more like a catapult... an electrical one instead of a mechanical one. -dave w > > It may be an unaffiliated hobby. > > [quoted text clipped - 5 lines] > vehicle? I can't see having the coil and supply on the rocket being a good > idea (too heavy). In theory for a "zero stage" which remains 100% on the ground for a targeted 15% of total rocket power. Jerry SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 no the power source, cap bank would have to be on the pad. as for the atf that doesn't apply and the federal govt doesn't appear to cover items that are like coil launchers plus IF I were to build one, I would launch it on a military camp to avoid public interactions and federal transport interactions, or restrictions >> It may be an unaffiliated hobby. >> [quoted text clipped - 5 lines] > vehicle? I can't see having the coil and supply on the rocket being a good > idea (too heavy). Not aluminum rings. Iron or similar alloy. Must be susceptible to magnetic pull/push, which aluminum is not. Heavier metals... ferrous metals, I believe. With current technology, the weight involved and the energy requirements would make it extremely impractical; you'd need an 18 wheeler to haul the launch equipment large enough to launch anything larger than 6 inches tall. The videos on the site show a device that is 4 or more times heavier, but not much more powerful than, a B-B gun. I am sure others have come up with more compact and powerful variations, though, so I would not rule it out in the not-too-distant future. ~ Duane Phillips. > Hi > [quoted text clipped - 13 lines] > VE9MTB > TRA L-1 >Not aluminum rings. Iron or similar alloy. Must be susceptible to magnetic >pull/push, which aluminum is not. Heavier metals... ferrous metals, I >believe. Aluminum rings *will* be repelled by an alternating magnetic field. Lenz's Law states: An induced electromagnetic force generates a current that induces a counter magnetic field that opposes the magnetic field generating the current. So, think of the aluminum ring as a one-turn secondary coil on a transformer. The coil is shorted, so maximum induced current will flow, resulting in maximum magnetic field generated. The induced magnetic field will directly oppose the magnetic field that induced it, and the ring will be repelled. I did a demonstration of this for a science fair project in grade school, and won 1st prize. I used a short piece (1.5" long, .75" diameter) of aluminum pipe, rather than a ring, to allow me to more easily constrain its motion to one axis. It was a loose sliding fit over the plastic tube that covered the square steel core. The electromagnet was hand-wound from several thousand turns of "bell wire" (bare copper with a varnish coating for insulation), and connected to a 110 VAC line cord, with a momentary contact push button. When the button was pushed, it would throw the aluminum tube about 2 feet straight up in the air off of the 4" long plastic-encased steel core sticking out the top of the electromagnet. Bottom line: all that was required was that the "ring" conduct electricity. Copper wire loops taped to cardboard tubes worked just fine, as well, but the aluminum tube made for the best "display". For some reason, I had a knack for winning science fairs in grade school with projects that threw things in the air, blew up, etc. I wonder if I could get away with any of them in today's litigious "zero tolerance" world.... - Rick "Dust Explosion" Dickinson Signature"Things don't happen just because Prime Ministers are keen on them. Neville Chamberlain was keen on peace." -- Sir Humphrey Appleby > For some reason, I had a knack for winning science fairs in grade > school with projects that threw things in the air, blew up, etc. >I wonder if I could get away with any of them in today's litigious "zero > tolerance" world.... nope, better stick to demonstrations of owl preserves and how they effect homo sapiens male mating habits. > owl preserves Wouldn't that be rather hard to spread on the toast, with all the feathers and everything? -dave w > > owl preserves > > Wouldn't that be rather hard to spread on the > toast, with all the feathers and everything? lol ;-) some of the guys at work have lunch at owl preserves. they get wings and beer. think orange and white >>owl preserves > > Wouldn't that be rather hard to spread on the > toast, with all the feathers and everything? > > -dave w Not if you put the blender on "liquefy". > >>owl preserves > > [quoted text clipped - 4 lines] > > Not if you put the blender on "liquefy". But then it would be "owl jelly", not "owl preserves"... -dave w > For some reason, I had a knack for winning science fairs in grade > school with projects that threw things in the air, blew up, etc. I > wonder if I could get away with any of them in today's litigious "zero > tolerance" world.... Heh, heh. For my 7th grade science project I made a working cutaway model of a gun-type uranium bomb. When the "uranium" slug hit the target, it triggered an AG-1 flashbulb for effect. The nun (catholic school) doing the judging wasn't expecting the special effect, and I do believe she lost bladder control at the flash of white light from the "bomb". I got a "D" and was reprimanded for "innapropriate subject meterial" > > For some reason, I had a knack for winning science fairs in grade > > school with projects that threw things in the air, blew up, etc. I [quoted text clipped - 10 lines] > > I got a "D" and was reprimanded for "innapropriate subject meterial" That just rocks! SignatureJerry Irvine, Box 1242, Claremont, California 91711 USA Opinion, the whole thing. <mail to:01rocket@gte.net> Please bring common sense back to rocketry administration. (too late) Produce then publish. http://www.usrockets.com Ebay auction deals and specials. http://tinyurl.com/6wlp8 >> For some reason, I had a knack for winning science fairs in grade >> school with projects that threw things in the air, blew up, etc. I [quoted text clipped - 10 lines] > >I got a "D" and was reprimanded for "innapropriate subject meterial" You were robbed! You could have tried something like "God creates the universe 15 billion (or so) years ago with the Big Bang." Alan > >I got a "D" and was reprimanded for "innapropriate subject meterial" > > You were robbed! You could have tried something like "God creates the > universe 15 billion (or so) years ago with the Big Bang." He's lucky he did it 15 billion years ago... there would be no way the fire marshal would approve the storage for that much stuff these days! -dave w > You were robbed! You could have tried something like "God creates the > universe 15 billion (or so) years ago with the Big Bang." Not unlike a discussion with my HS religion teacher. He retired from teaching after the semester. Teachers were not happy to have me. A bit later, after seeing my chemistry test papers, my father wound up having a few educational sessions with my pimply-faced, just-out-of-college high school teacher. Dad had a PhD in the subject, and the teacher never dared mark me wrong on something without his approval thereafter. Thanks Rick! Truly enlightening, and I stand corrected. <g> How did you handle a 75" diameter alminum pipe? That had to be some project. ~ Duane Phillips. >>Not aluminum rings. Iron or similar alloy. Must be susceptible to >>magnetic [quoted text clipped - 36 lines] > > - Rick "Dust Explosion" Dickinson Eddie currents will be generated in *any* conductive material in the presence of a changing magnetic field. There are plenty of practical examples of this at science 'museums' such as Questacon here in Canberra, Australia. BTW a rail 'gun' is able to 'fire' a projectile which definitely *would* class it as a firearm in Australia. In the end it is the result that counts, not how you achieve it. Cheers Bob Stephenson bstephenatnetspeeddotcomdotau > Not aluminum rings. Iron or similar alloy. Must be susceptible to magnetic > pull/push, which aluminum is not. Heavier metals... ferrous metals, I [quoted text clipped - 28 lines] > > VE9MTB > > TRA L-1 I believe I stand corrected about the aluminum. I learn something new everyday. Read Rick's post to mine... Anyway, the rest is still rather unweildy at this point. I have yet to see someone with something very portable that would acheive a worthy altitude. ~ Duane Phillips. > Not aluminum rings. Iron or similar alloy. Must be susceptible to > magnetic pull/push, which aluminum is not. Heavier metals... ferrous [quoted text clipped - 29 lines] >> VE9MTB >> TRA L-1 > Anyone ever try to launch using a magnetic coil gun in place of an engine? > The design covers use of a electromagnet, driven by a charged bank of large > capictors, charged using batteries. the rocket would be fitted with aluminum > rings which are shoved by the magnetic field. ROTFLMAO! Back to the coloring book for you! Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD! <<< Kaplow Klips & Baffle: http://nira-rocketry.org/LeadingEdge/Phantom4000.pdf www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org "Congress shall make no law respecting an establishment of religion, except to encourage attendance in Christian churches; or prohibiting the free exercise thereof, except to require prayer in schools; or abridging the freedom of speech, except for those questioning the Bush administration; or of the press, except that not owned by Rupert Murdoch; or the right of the people peaceably to assemble, except those protesting pre-emptive wars; and to petition the government for a redress of grievance, except those we don't like." -former U.S. Sen. Gary Hart > Anyone ever try to launch using a magnetic coil gun in place of an engine? > The design covers use of a electromagnet, driven by a charged bank of large > capictors, charged using batteries. the rocket would be fitted with aluminum > rings which are shoved by the magnetic field. Forget it. If you scale it up enough to be useful, someone will decide it's dangerous or could be used as a weapon. (Weapon: something that if pressed against someone's face and activated, might cause them to be hurt). Then they'll re-interpret an existing category to cover it ("Uh, it shoots something, so it must be a gun." or "Uh, you could put a needle on the end and inject someone with AIDS with that, so it must be a hypodermic!") Either way, you won't be allowed to have it, no legislation required. > Then they'll re-interpret an existing category to cover it ("Uh, it > shoots something, so it must be a gun." GREAT , we can have those. thank the lord and the second amendment. so if it's a gun, bring em on ! >or "Uh, you could put a needle > on the end and inject someone with AIDS with that, so it must be a > hypodermic!") those are handed out free on many streets by good will groups to prevent the spread of aids of all things. > Either way, you won't be allowed to have it, no legislation required. I now really confused. > those are handed out free on many streets by good will groups to prevent the > spread of aids of all things. Around here, at least, you can't walk into a drug store and buy a hypodermic - it's a prescription item. DESPITE the fact that they're given out free by government or government approved programs. Private groups can't hand them out; only the government is exempt from it's own laws. > Around here, at least, you can't walk into a drug store and buy a > hypodermic - it's a prescription item. DESPITE the fact that they're > given out free by government or government approved programs. Around here you CAN buy the baby hypodermics for dispensing small doses of medicine to infants. And at Farm & Fleet, I can by all the syringes and NEEDLES I want. The only question they ever asked me is if I was using them on farm livestock; If I were, I wouldn't have to pay sales tax! Bob Kaplow NAR # 18L TRA # "Impeach the TRA BoD" >>> To reply, remove the TRABoD! <<< Kaplow Klips & Baffle: http://nira-rocketry.org/LeadingEdge/Phantom4000.pdf www.encompasserve.org/~kaplow_r/ www.nira-rocketry.org www.nar.org You need only reflect that one of the best ways to get yourself a reputation as a dangerous citizen these days is to go about repeating the very phrases which our founding fathers used in the struggle for independence. -- Charles A. Beard |
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