How to make a weapon that makes you go 'ooohh'.

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How to make a weapon that makes you go 'ooohh'.

Postby kernelpanic » Sat Dec 18, 2010 2:11 am UTC

Post here instructions on how to make fantastic machinery.
I'll start.

Plasma shotgun
Materials
    Steel tubing, for the body
    5 mm thick lead plate
    Glass vial with two holes for containment of plasma generator
    2 x Titanium dioxide (or other material with a high refractive index) lens, of any reasonable shape and size
    Something to make the lens turn.
    High-power electromagnet (with handheld power supply)
    1.5g of very small diamond crystals
    1.5 g of plutonium (IV) dioxide, powdered
    Super-pressurized, superheated liquid oxygen tank
    Helium tank
    50 g of Iodine-131
Instructions
Diagram:
Spoiler:
plasma.jpg

Inside the glass vial place the powdered diamond and PuO2. Set up the inside of the gun such that the I-131 is blocked by the lead plate, on one end of the pipe. Put the electromagnet on the other side. The glass vial goes in the middle. Now connect the glass vial to the two tanks, and put the lens and its turning system above the lead plate. To fire, first fill the vial with helium. Now inject the superheated oxygen. This should vaporize the diamonds, increasing the density of the plutonium. Turn on the electromagnet, and turn the lens such that the gamma radiation from the iodine is totally internally reflected in the lens and toward the plutonium. The increased radiation and density will cause it to go supercritical, which coupled with the high temperature left over from the diamond will ionize the helium. This plasma will shoot out of the end, being attracted by the electromagnet. At this point the electromagnet's wires will melt, turning it off and allowing the plasma ball to shoot out, obviously.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby davidstarlingm » Sat Dec 18, 2010 5:58 am UTC

Anti-Everything Gravitational Wave Laser

Materials:
  • 200 Large Hadron Colliders
  • 2 square miles of superconducting sheets
Instructions:
Make the superconducting sheets into a large cylinder with a small hole in one end pointing at your target.

Aim all the LHCs into two ports at the base of the cylinder such that their paths intersect at the center of the cylinder.

Pump up two of the LHCs such that they fire micro black holes. Set one to fire just before the other, so the two black holes reach the center of the cylinder just out of phase.

The black holes will immediately form an elliptical binary orbit, releasing gravitational waves as they spiral together and decay with Hawking radiation. The gravitational waves are totally reflected inside the cylinder by the quantum-state superconducting layers.

Tune the LHCs so that the frequency of the gravitational waves produces standing-wave resonance inside the cylinder.

Fire all the LHCs fast enough that the standing waves can no longer hold the gravitational energy and population inversion occurs. The built-up gravitational wave energy will be fired out the front of the cylinder as a single coherent beam of compressed spacetime, ripping apart the fabric of anything it hits.

You may want to consider encasing this weapon in a large spherical spaceship that will be able to generate the power required. The weapon face should point out one side of the spaceship, slightly offset from the equatorial line. Make sure that the exhaust ports of the spaceship are not vulnerable to attack by small fighters.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Mighty Jalapeno » Sat Dec 18, 2010 6:05 am UTC

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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Sun Dec 19, 2010 8:20 am UTC

davidstarlingm wrote:Anti-Everything Gravitational Wave Laser

Power it with a 100 million ton black hole's hawking radiation, while feeding it matter.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Meteorswarm » Tue Dec 21, 2010 12:13 am UTC

nbonaparte wrote:
davidstarlingm wrote:Anti-Everything Gravitational Wave Laser

Power it with a 100 million ton black hole's hawking radiation, while feeding it matter.


Don't black holes convert matter to energy faster when they're small?
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Tue Dec 21, 2010 1:06 am UTC

For a black hole, that is small.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby davidstarlingm » Tue Dec 21, 2010 1:22 am UTC

nbonaparte wrote:For a black hole, that is small.

100 million tons, converted to energy by e=mc2, is 8.2e27 joules. That's quite a bit higher than anything the LHC puts out (by a factor of 10^33). So, in terms of micro-black-holes....
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Tue Dec 21, 2010 1:30 am UTC

I'm talking about a black hole that you could keep around and have stable with a constant flow of matter. It would be made with an immense gamma ray laser array focused at one point.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby RoadieRich » Thu Dec 30, 2010 7:24 pm UTC

I've been thinking about railguns.

What if you had a circular accelerator, with a (extremely carefully designed) "switch" into the barrel? Railguns - as I understand them - are mostly limited by materials, and contact time - it takes huge currents because the projectile is only in contact with the rails for a short time. An accelerator ring would counteract that. The only difficulty would be engineering the "switch", but with a large enough ring, might not be too much of a problem. You could also construct a rapid burst-fire railgun using a similar design - you're not dependent on a sudden discharge of energy - which needs to be recharged - to provide acceleration.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Thu Dec 30, 2010 7:34 pm UTC

magnetic switches like that are use din particle accelerators to go from the loop to the colliding area, but I think the energy required for the magnet for a macro scale projectile would 1. risk breaking stuff in the accelerator, and 2. use similar amounts of energy to a regular railgun.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby RoadieRich » Thu Dec 30, 2010 8:44 pm UTC

nbonaparte wrote:magnetic switches like that are use din particle accelerators to go from the loop to the colliding area, but I think the energy required for the magnet for a macro scale projectile would 1. risk breaking stuff in the accelerator, and 2. use similar amounts of energy to a regular railgun.

Yes, but it could apply the energy over a longer period - I'm trying to avoid the problem of needing to apply the entire current in the time the projectile is in the barrel, which uses a system which inevitably needs recharging between shots.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby broken_escalator » Thu Dec 30, 2010 8:48 pm UTC

Mighty Jalapeno wrote:Swordchucks

Dammit, I had hoped no one posted those yet!
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Thu Dec 30, 2010 9:05 pm UTC

RoadieRich wrote:
nbonaparte wrote:magnetic switches like that are use din particle accelerators to go from the loop to the colliding area, but I think the energy required for the magnet for a macro scale projectile would 1. risk breaking stuff in the accelerator, and 2. use similar amounts of energy to a regular railgun.

Yes, but it could apply the energy over a longer period - I'm trying to avoid the problem of needing to apply the entire current in the time the projectile is in the barrel, which uses a system which inevitably needs recharging between shots.

the energy to accelerate it can be applied over a longer period. but the switch to bring it from the circular part to the barrel would have to be a very powerful electromagnet for a short time.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Levi » Thu Dec 30, 2010 9:09 pm UTC

Mighty Jalapeno wrote:Chainsawchucks

FTFY
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Re: How to make a weapon that makes you go 'ooohh'.

Postby RoadieRich » Thu Dec 30, 2010 10:10 pm UTC

nbonaparte wrote:
RoadieRich wrote:
nbonaparte wrote:magnetic switches like that are use din particle accelerators to go from the loop to the colliding area, but I think the energy required for the magnet for a macro scale projectile would 1. risk breaking stuff in the accelerator, and 2. use similar amounts of energy to a regular railgun.

Yes, but it could apply the energy over a longer period - I'm trying to avoid the problem of needing to apply the entire current in the time the projectile is in the barrel, which uses a system which inevitably needs recharging between shots.

the energy to accelerate it can be applied over a longer period. but the switch to bring it from the circular part to the barrel would have to be a very powerful electromagnet for a short time.

I'm visualising it as more mechanical than electromagnetic - a similar sort of thing to the switches or points used on railways. The accelerator tracks are split into two halves, and the muzzleward half moves up and down. There's a bridging section moves similarly, lining up with the rearward half of the loopand the barrel. There might be problems with timing - depending on speed and length of the loop, you'd only have fractions of a second to perform the change - and although that's still a sudden energy requirement, the actual requirements for it would be small in comparison to accelerating the projectile. Another way would be to have a retractable (or hinged) guide-rail around the outer edge of the ring, that opens an aperture to the barrel.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Odd_nonposter » Fri Dec 31, 2010 4:24 am UTC

Forgive me if my understanding of high school physics is flawed, or if you've already taken this into consideration, but I might have a solution to your circular railgun problem.

An object moves in a circular path when a centripetal force acts perpendicular to its direction of motion. If this force were to suddenly disappear, then the object would follow a path tangent to the point on the circular orbit at which the force disappeared.

So, if the 'barrel' part of the ring-railgun were to intersect the ring at a point tangent to the ring, then wouldn't 'firing' be as simple as removing the centripetal force on the projectile at that exact point? In this case, that would amount to simply flipping the switch off at the right time.

I can think of a few problems: it would be extremely hard to aim such a setup--you'd have to move the entire assembly to point the barrel in the right direction. Also, timing the release incorrectly would have some destructive consequences on the accelerator ring. As far as I know, solid-state electronics can't handle huge currents, and I'd imagine that a mechanical relay that size would be inconsistent in its delay. Corrective electromagnets and mechanical guides might be in order.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Robert'); DROP TABLE *; » Fri Dec 31, 2010 10:51 am UTC

Odd_nonposter wrote:Also, timing the release incorrectly would have some destructive consequences on the accelerator ring.

Is there something special about engineers and understatements?

And you're right, in that a ring-railgun would fire in a straight line if you took away the centripetal force. However, I have no idea what you'd use to generate that centripetal force in the first place. A physical rail would work without much bother, but it's not easy to get rid of when you want to fire. A magnet is easier to get rid of, but very inefficient at actually generating the inward force.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Josephine » Fri Dec 31, 2010 2:53 pm UTC

Well, curved rails would put it on a circular trajectory, but you couldn't turn it off. Perhaps a magnet in the center... no. It looks like the switch would have to be mechanical, thus running into the same problems.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Antimony-120 » Wed Jan 05, 2011 2:12 am UTC

Levi wrote:
Mighty Jalapeno wrote:Chainsawchucks

FTFY


Oh. How stupid of me. That was the sound of chainsaw nunchucks.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Sockmonkey » Tue Jan 11, 2011 7:54 pm UTC

Regular railgun. Conductive lubricant on the rails. Next.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Bhelliom » Tue Jan 11, 2011 9:05 pm UTC

Just build yourself a late model Bolo

Spoiler:
Bolo offensive systems

From the Mark III onwards, the standard Bolo design was intended to provide a consolidated set of capabilities intended to address virtually any combat situation, from operating underwater to engaging enemy units in land, sea, air and even space - the Mark XV/R was able to engage starships in low to medium orbit. Depending on the era and enemy capabilities, a single Bolo was often considered the equivalent of a manned armoured assault brigade or even a full army corps. While each Mark generally opted for a "balanced" approach to offensive and defensive capabilities, there were often specialised variations on the base model, such as heavy siege units, scout units and ECM platforms.

Prior to the Mark XIV, early Bolo Marks utilised projectile weapons for their main battery: a tank gun firing discarding sabot fin-stabilized long rod penetrator shells or a railgun. As the energy-storage capabilities of successive Bolo designs grew, these projectile weapons were replaced, initially by laser cannons, though these were quickly succeeded by the Hellbore: a plasma cannon derived from a battlecruiser's main battery.

Hellbore ammunition consists of slivers of highly-pressurized frozen deuterium which, when fired, are ignited (by a laser) in a fusion reaction. The resulting bolt is contained and directed using strong magnetic fields in the breech and barrel. The resulting plasma travels at a considerable fraction of light speed and is not affected by planetary gravity. However, since the Hellbore was designed as naval armament for Concordiat warships, modifications had to be made to avoid losing a significant portion of the shot's energy to atmospheric attenuation. To this end, a fraction of a second prior to deuterium detonation, a laser is fired along the path of the bolt to create a momentary vacuum. Later Bolo marks are capable of internally manufacturing Hellbore rounds, using water as a raw material, whereby the deuterium isotope of hydrogen is separated and cooled cryogenically into splinters of frozen hydrogen.

The Hellbore first saw service with the Mark XIV and is generally mounted on a turret to provide maximum targeting capabilities. Some Marks experimented with the use of two lighter Hellbores in place of a single, larger cannon; later, heavier Marks generally mount several smaller "support" Hellbores in addition to the main battery. Hellbore power output is measured in megatons per second; the diameter of the tube is a more common quantifying measure. The Mark XIV mounted a single 25 cm Hellbore; the Mark XXXIII featured three 200 cm and sixteen 30 cm Hellbores. The Mark XXXIV carries a variant of the Hellbore known as the Hellrail, an anti-starship railgun weapon, possessing an output of 90 megatons per shot. Hellrails are designed for planetary defense and cannot normally be depressed to strike ground targets.

All Marks of Bolos are equipped with a set of secondary batteries, generally known as infinite repeaters. Depending on the era and Mark, this term covers the use of Gatling guns, anti-personnel flechette launchers, small-bore railguns, energy weapons and even small-caliber Hellbores. Other secondary armaments include indirect weaponry such as rapid-fire mortars, heavy howitzers, and surface-to-surface/surface-to-air missiles. Bolos can be equipped with thermonuclear weaponry, though the use of these on inhabited planets is generally restricted.

Mark XXXIIIs are known to carry Dragon hover-tanks and Wyvern flyers in combat to provide additional offensive and scouting capabilities. Many Marks also carry maintenance drones which can be deployed externally if required.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Shivahn » Tue Jan 11, 2011 9:58 pm UTC

Bhelliom wrote:Just build yourself a late model Bolo


At first I thought you were talking about a bola.

I was wondering what a late model bola looked like.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby racoonjwoolsey » Thu Jan 13, 2011 6:46 am UTC

nbonaparte wrote:I'm talking about a black hole that you could keep around and have stable with a constant flow of matter. It would be made with an immense gamma ray laser array focused at one point.



Well, theres your 'ooohh' weapon right there, black hole gun...
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Re: How to make a weapon that makes you go 'ooohh'.

Postby MHD » Thu Sep 22, 2011 8:06 am UTC

EvanED wrote:be aware that when most people say "regular expression" they really mean "something that is almost, but not quite, entirely unlike a regular expression"
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Tomlidich » Thu Sep 22, 2011 5:59 pm UTC

spud gun rechambered to fire golf balls.
fully automatically.

yes, i know im easily impressed.

i havn't quite worked out all the design parameters, but should have a working prototype soon.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby idobox » Fri Sep 23, 2011 10:34 am UTC

Much easier plasma gun:
Take a badass railgun, charge capacitors until breakdown voltage of air is reached. You will have arc (made of plasma) propelled by the strong magnetic field.

Orbital laser, or its more likely variation, ground based laser and mirror in orbit.
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Re: How to make a weapon that makes you go 'ooohh'.

Postby Tomlidich » Fri Sep 23, 2011 6:03 pm UTC

nerf minigun. always wanted to build one.
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