Avali Nexus

Full Version: Avali Nexus Forum Thread: 4 Score and Several Threads Ago...
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
(05-18-2016, 04:50 PM)kawaiiChiimera Wrote: [ -> ]Optimal rate of fire for a three barreled coilminigun?
That's like asking "how fast do cars go"

Show me a design brief complete with specifications of coil size, barrel length, slug size, and materials used.

Any info is better than nothing.
(05-18-2016, 04:50 PM)kawaiiChiimera Wrote: [ -> ]Optimal rate of fire for a three barreled coilminigun?
Variable/electronic control is best almost everything from hip fring to fixed vehicle/tripod, based on the GAU-19 .50 tri-barreled gatling gun it's usually 1000-2000 rounds per minute
(05-18-2016, 04:55 PM)SCN-3_NULL Wrote: [ -> ]
(05-18-2016, 04:50 PM)kawaiiChiimera Wrote: [ -> ]Optimal rate of fire for a three barreled coilminigun?
Variable/electronic control is best almost everything from hip fring to fixed vehicle/tripod, based on the GAU-19 .50 tri-barreled gatling gun it's usually 1000-2000 rounds per minute
Good point.

Still, if you're wanting to fire slugs large enough and hard enough to shred tanks you'll probably have to wear a backpack made of volatile lithium polymer batteries (lots of flat cells, made intentionally squishy since they are much more prone to expansion than lithium ion). Also heat dissipation is an issue in ANY firearm, rotary weapons are also designed to usually shove bullets in the way of the barrels and hope for the best, requiring a coordinated charge and discharge for each shot could get tricky, but not as bad as powder driven.

I'm just rambling now I'll shush.
I think the level of coordination involved in any electromagnetic weapon will dramatically simplify barrel sync.
(05-18-2016, 04:54 PM)Rahizel Wrote: [ -> ]
(05-18-2016, 04:50 PM)kawaiiChiimera Wrote: [ -> ]Optimal rate of fire for a three barreled coilminigun?
That's like asking "how fast do cars go"

Show me a design brief complete with specifications of coil size, barrel length, slug size, and materials used.

Any info is better than nothing.
This is 33rd century tech, so a lot of it is pretty much artistic license. Its more for close range (2m-100m) so accuracy is not much of an issue. The barrels would be made of dense, durable metal (think titanium carbide), about half a meter long, and would probably have four to six EM coils of extremely low resistance on each.
edit:
The projectiles would probably be small, more for puncturing armor than rending flesh (which it'll do anyways), optimized for coilgun use and supersonic velocities.
edit2: Also, we have warm (not hot) superconductors and super capacitors far exceeding the energy density and output of modern explosives.
(05-18-2016, 06:26 PM)kawaiiChiimera Wrote: [ -> ]
(05-18-2016, 04:54 PM)Rahizel Wrote: [ -> ]That's like asking "how fast do cars go"

Show me a design brief complete with specifications of coil size, barrel length, slug size, and materials used.

Any info is better than nothing.
This is 33rd century tech, so a lot of it is pretty much artistic license. Its more for close range (2m-100m) so accuracy is not much of an issue. The barrels would be made of dense, durable metal (think titanium carbide), about half a meter long, and would probably have four to six EM coils of extremely low resistance on each.
edit:
The projectiles would probably be small, more for puncturing armor than rending flesh (which it'll do anyways), optimized for coilgun use and supersonic velocities.
edit2: Also, we have warm (not hot) superconductors and super capacitors far exceeding the energy density and output of modern explosives.
In the 33rd century I'm sure that singularity would be achieved or resources would be much too sparse, and a gauss weapon would be looked af how we look at slingshots today, a toy...

Assuming that the idea of toys even lasts that long.
(05-18-2016, 07:02 PM)Rahizel Wrote: [ -> ]
(05-18-2016, 06:26 PM)kawaiiChiimera Wrote: [ -> ]This is 33rd century tech, so a lot of it is pretty much artistic license. Its more for close range (2m-100m) so accuracy is not much of an issue. The barrels would be made of dense, durable metal (think titanium carbide), about half a meter long, and would probably have four to six EM coils of extremely low resistance on each.
edit:
The projectiles would probably be small, more for puncturing armor than rending flesh (which it'll do anyways), optimized for coilgun use and supersonic velocities.
edit2: Also, we have warm (not hot) superconductors and super capacitors far exceeding the energy density and output of modern explosives.
In the 33rd century I'm sure that singularity would be achieved or resources would be much too sparse, and a gauss weapon would be looked af how we look at slingshots today, a toy...

Assuming that the idea of toys even lasts that long.
There were multiple periods of time where nearly no worthwhile technological advancements were made. Plus, you didn't even help answer my question. Sad
Also, did I mention this is going on a two metric ton suit of armor? Recoil wont be an issue up to insanely high rates of fire, such as 3000rpm, what with the (relatively) small rounds and very heavy apparatus.
Edit: I did the math and that's enough to make the suit accelerate at about 1-1.5m/s backwards, discounting friction. :O
edit3:
So the joules per bullet is (1/2)mv^2, and the average bullet mass is .02-.04kg, and say its accelerated to 3000m/s. That gives each bullet a kinetic energy of 135000 joules.
The energy is imparted in 1/3000's of a minute, or 1/50'th of a second at 3000RPM. So 135KJ per 1/50th of a second is 6.75MW (joules per second), just for the coilgun firing mechanism, assuming perfect reliability and efficiency.
aww ye math
(man that was a clusterfuck)
edit4:
How much power could a miniature aneutronic fusion reactor output? A MW isn't a small amount of power...
Energy use will decrease exponentially with a smaller rate of fire, too...
Okay. So lets assume only 25% of the energy released on firing actually makes it into the projectile. I'm not sure how efficient gunpowder weapons usually are, but it can't be too high given the physics involved, but I would expect coilguns to be even worse. You're dealing with circumstances where a lot of energy is straight up thrown away to heat in the components, so the efficiency will probably be poor.

Multiply that energy rate at the muzzle by 4. This would give you a ballpark for how much energy must be supplied.  75% of the provided energy is thrown away as heat, while 25% appears as muzzle velocity of the projectile.

Your design must not only provide the entire amount of energy needed, it must safely dissapate the heat produced. There are equations governing heat transfer to air that you can calculate how fast it will cool down easily enough. Better get a spreadsheet started.

As for how much energy a fusion reactor can make? Don't even start on that one. It is impossible to predict the properties of a technology that doesn't exist yet.
Just take that artistic license and assume it is able to do so. 
(05-18-2016, 07:30 PM)kawaiiChiimera Wrote: [ -> ]
(05-18-2016, 07:02 PM)Rahizel Wrote: [ -> ]In the 33rd century I'm sure that singularity would be achieved or resources would be much too sparse, and a gauss weapon would be looked af how we look at slingshots today, a toy...

Assuming that the idea of toys even lasts that long.
There were multiple periods of time where nearly no worthwhile technological advancements were made. Plus, you didn't even help answer my question. Sad
Also, did I mention this is going on a two metric ton suit of armor? Recoil wont be an issue up to insanely high rates of fire, such as 3000rpm, what with the (relatively) small rounds and very heavy apparatus.
Edit: I did the math and that's enough to make the suit accelerate at about 1-1.5m/s backwards, discounting friction. :O
edit3:
So the joules per bullet is (1/2)mv^2, and the average bullet mass is .02-.04kg, and say its accelerated to 3000m/s. That gives each bullet a kinetic energy of 135000 joules.
The energy is imparted in 1/3000's of a minute, or 1/50'th of a second at 3000RPM. So 135KJ per 1/50th of a second is 6.75MW (joules per second), just for the coilgun firing mechanism, assuming perfect reliability and efficiency.
aww ye math
(man that was a clusterfuck)
edit4:
How much power could a miniature aneutronic fusion reactor output? A MW isn't a small amount of power...
Energy use will decrease exponentially with a smaller rate of fire, too...
3000 revolutionspm=/=3000 roundspm
Meanwhile in the Soulstorm campaign, I defeated a main base, mostly by figuring out I could save on battle. Only this time, I killed the Marines, and it didn't crash, although the system map was going funky by that point.
(05-18-2016, 10:26 PM)Rahizel Wrote: [ -> ]
(05-18-2016, 07:30 PM)kawaiiChiimera Wrote: [ -> ]There were multiple periods of time where nearly no worthwhile technological advancements were made. Plus, you didn't even help answer my question. Sad
Also, did I mention this is going on a two metric ton suit of armor? Recoil wont be an issue up to insanely high rates of fire, such as 3000rpm, what with the (relatively) small rounds and very heavy apparatus.
Edit: I did the math and that's enough to make the suit accelerate at about 1-1.5m/s backwards, discounting friction. :O
edit3:
So the joules per bullet is (1/2)mv^2, and the average bullet mass is .02-.04kg, and say its accelerated to 3000m/s. That gives each bullet a kinetic energy of 135000 joules.
The energy is imparted in 1/3000's of a minute, or 1/50'th of a second at 3000RPM. So 135KJ per 1/50th of a second is 6.75MW (joules per second), just for the coilgun firing mechanism, assuming perfect reliability and efficiency.
aww ye math
(man that was a clusterfuck)
edit4:
How much power could a miniature aneutronic fusion reactor output? A MW isn't a small amount of power...
Energy use will decrease exponentially with a smaller rate of fire, too...
3000 revolutionspm=/=3000 roundspm

Yeah.  Depends on how the system works.  Is it firing every next barrel or is it firing every 4th/3rd/5th barrel pass for cooling and effectiveness?  Because these things are pretty important.  The obvious parts you can do in your head.
2 words...

Bird tits.

<~>
(05-19-2016, 12:44 AM)Rahizel Wrote: [ -> ]2 words...

Bird tits.

<~>

One name:  It

One Ring:  Increases all stats by +1

One Bullet:  Saved for yourself.

One King: To fall before the people.

One last dance:  Just for you.

One Hurrah:  For the end of all things.

One tear:  For your smallest problems.

^-^
(05-19-2016, 01:11 AM)Lost Rinoah Wrote: [ -> ]
(05-19-2016, 12:44 AM)Rahizel Wrote: [ -> ]2 words...

Bird tits.

<~>

One name:  It

One Ring:  Increases all stats by +1

One Bullet:  Saved for yourself.

One King: To fall before the people.

One last dance:  Just for you.

One Hurrah:  For the end of all things.

One tear:  For your smallest problems.

^-^
Just, it's why I don't like starbound. Bird tits.
Wear a shirt and stop staring then. Duh. :U

"Pull your pants up! I can see your underwear." "Stop staring at my ass."

I am hyper today some reason. And yet I sit and do nothing. Just, laugh to myself about nothing. Nothing at all. It's my favorite word. "Nothing".
(05-18-2016, 10:26 PM)Rahizel Wrote: [ -> ]
(05-18-2016, 07:30 PM)kawaiiChiimera Wrote: [ -> ]snop
3000 revolutionspm=/=3000 roundspm
Yeah yeah I know. At 1000 revs/m with three barrels it can fire at 3000 rounds per minute max.

(05-18-2016, 10:16 PM)OdinYggd Wrote: [ -> ]snop
I don't own excel. ;(
(05-19-2016, 01:12 AM)Rahizel Wrote: [ -> ]Just, it's why I don't like starbound. Bird tits.
FITE ME BISH
[Image: tumblr_mzni067dW41rtcfaqo1_250.png]
motherfuckin bird tits are the shit
Also I was wrong on the "energy use increases exponentially with rate of fire" part. I meant to say velocity.
(05-19-2016, 01:12 AM)Rahizel Wrote: [ -> ]
(05-19-2016, 01:11 AM)Lost Rinoah Wrote: [ -> ]One name:  It

One Ring:  Increases all stats by +1

One Bullet:  Saved for yourself.

One King: To fall before the people.

One last dance:  Just for you.

One Hurrah:  For the end of all things.

One tear:  For your smallest problems.

^-^
Just, it's why I don't like starbound. Bird tits.

There are multiple mods for that.
I reccommend http://community.playstarbound.com/resources/detailed-species.3356/
(05-19-2016, 02:14 AM)Shaadaris Wrote: [ -> ]
(05-19-2016, 01:12 AM)Rahizel Wrote: [ -> ]Just, it's why I don't like starbound. Bird tits.

There are multiple mods for that.
I reccommend http://community.playstarbound.com/resources/detailed-species.3356/
I recommend http://community.playstarbound.com/resources/enhanced-body-shape.774/
(05-19-2016, 01:30 AM)kawaiiChiimera Wrote: [ -> ]
(05-18-2016, 10:26 PM)Rahizel Wrote: [ -> ]3000 revolutionspm=/=3000 roundspm
Yeah yeah I know. At 1000 revs/m with three barrels it can fire at 3000 rounds per minute max.


(05-18-2016, 10:16 PM)OdinYggd Wrote: [ -> ]snop
I don't own excel. ;(


Also I was wrong on the "energy use increases exponentially with rate of fire" part. I meant to say velocity.

There's lots of alternatives to Excel itself. I usually use LibreOffice myself, which is open source software and completely free as such while still being able to do almost everything that Microsoft Office does. As long as you don't want the cloud garbage that they are shipping nowdays.

Energy usage probably would increase with rate of fire, but higher firing rates would actually give a lower velocity. Has to do with the effects of power draw and component heating causing the efficiency of the driver circuitry to decrease. Not only that, but that heating effect has a tendency to run away- the losses will increase faster and faster until a component in the drive melts and releases its magic smoke in the middle of a shootout.

You would achieve peak muzzle velocity firing one shot at a time, and giving the driver circuit sufficient time to recharge itself and cool down in between shots. This would give the greatest efficiency of energy transfer, as well as being the least demanding on the power supply and materials.
(05-19-2016, 03:00 AM)kawaiiChiimera Wrote: [ -> ]
(05-19-2016, 02:14 AM)Shaadaris Wrote: [ -> ]There are multiple mods for that.
I reccommend http://community.playstarbound.com/resources/detailed-species.3356/
I recommend http://community.playstarbound.com/resources/enhanced-body-shape.774/

Ew. No. That looks ridiculous and despite being male makes my back hurt through probably the same weird process that makes me feel embarassed when a character on a tv show is embarassed.